FFH scientific research papers database

Database search:

1567 entries « ‹ 1 of 79 › »

Radoičić, M.; Ćirić-Marjanović, G.; Miličević, D.; Suljovrujić, E.; Milošević, M.; Jakovljević, J. Kuljanin; Šaponjić, Z.

Fine-tuning of conductive and dielectric properties of polypyrrole/TiO2 nanocomposite-coated polyamide fabric Journal Article

In: Composite Interfaces, 28 (8), pp. 795-808, 2021.

Abstract | Links | BibTeX

@article{Radoičić2021795,

title = {Fine-tuning of conductive and dielectric properties of polypyrrole/TiO2 nanocomposite-coated polyamide fabric},

author = {M. Radoičić and G. Ćirić-Marjanović and D. Miličević and E. Suljovrujić and M. Milošević and J. Kuljanin Jakovljević and Z. Šaponjić},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85089447238&doi=10.1080%2f09276440.2020.1805219&partnerID=40&md5=a1076e4c6b30b3e10c0db0837b8ec69a},

doi = {10.1080/09276440.2020.1805219},

year  = {2021},

date = {2021-01-01},

journal = {Composite Interfaces},

volume = {28},

number = {8},

pages = {795-808},

abstract = {Structural, conductive and dielectric properties of hybrid Polypyrrole (PPy)-TiO2 nanocomposite-coated polyamide fabric (PA-PPy/TiO2) synthesized by in-situ oxidative polymerization of pyrrole on the surface of polyamide in the presence of colloidal TiO2 NPs (d ~ 4.5 nm) have been studied. Raman spectra confirmed salt form of PPy in both neat PPy and PPy/TiO2-coated PA fabric and indicated its complete coverage. SEM/EDX analysis confirmed presence of TiO2 NPs and changes in granular structure of PPy deposited on the surface of PA fiber depending on the amount of TiO2 NPs. The PA-PPy/TiO2 nanocomposite sample with lowest content of TiO2 NPs (6.79 At.% Ti) showed highest conductivity (~10−6 S/cm) and dissipation factor (tan δ) in the entire frequency range. The lowest amount of TiO2 NPs in the PA-PPy/TiO2 nanocomposite induced two to four orders of magnitude higher tan δ value, compared to neat PPy covered PA fabric, depending on the frequency range. Frequency dependence of real (ϵ′) and imaginary part (ϵ″) of the complex permittivity for neat PA and PPy/TiO2-coated PA fabrics follow the trend of changes in dissipation factor for the same TiO2 NPs concentrations. The presence of TiO2 NPs could be exploited for tuning the conductive and dielectric properties of a conductive layer. © 2020 Informa UK Limited, trading as Taylor & Francis Group.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

Mojović, Z.; Petrović, S.; Mojović, M.; Pavlović, S.; Rožić, L.

Ruthenium containing perovskites as electrode materials for 4-nitrophenol detection Journal Article

In: Journal of Physics and Chemistry of Solids, 148 , 2021.

Abstract | Links | BibTeX

Grippo, V.; Mojovic, M.; Pavicevic, A.; Kabelac, M.; Hubatka, F.; Turanek, J.; Zatloukalova, M.; Freeman, B. A.; Vacek, J.

Electrophilic characteristics and aqueous behavior of fatty acid nitroalkenes Journal Article

In: Redox Biology, 38 , 2021.

Abstract | Links | BibTeX

@article{Grippo2021,

title = {Electrophilic characteristics and aqueous behavior of fatty acid nitroalkenes},

author = {V. Grippo and M. Mojovic and A. Pavicevic and M. Kabelac and F. Hubatka and J. Turanek and M. Zatloukalova and B. A. Freeman and J. Vacek},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85096158093&doi=10.1016%2fj.redox.2020.101756&partnerID=40&md5=2da8f31c4fb805691910ec16078ae42b},

doi = {10.1016/j.redox.2020.101756},

year  = {2021},

date = {2021-01-01},

journal = {Redox Biology},

volume = {38},

abstract = {Fatty acid nitroalkenes (NO2-FA) are endogenously-generated products of the reaction of metabolic and inflammatory-derived nitrogen dioxide (.NO2) with unsaturated fatty acids. These species mediate signaling actions and induce adaptive responses in preclinical models of inflammatory and metabolic diseases. The nitroalkene substituent possesses an electrophilic nature, resulting in rapid and reversible reactions with biological nucleophiles such as cysteine, thus supporting post-translational modifications (PTM) of proteins having susceptible nucleophilic centers. These reactions contribute to enzyme regulation, modulation of inflammation and cell proliferation and the regulation of gene expression responses. Herein, focus is placed on the reduction-oxidation (redox) characteristics and stability of specific NO2-FA regioisomers having biological and clinical relevance; nitro-oleic acid (NO2-OA), bis-allylic nitro-linoleic acid (NO2-LA) and the conjugated diene-containing nitro-conjugated linoleic acid (NO2-cLA). Cyclic and alternating-current voltammetry and chronopotentiometry were used to the study of reduction potentials of these NO2-FA. R–NO2 reduction was observed around −0.8 V (vs. Ag/AgCl/3 M KCl) and is related to relative NO2-FA electrophilicity. This reduction process could be utilized for the evaluation of NO2-FA stability in aqueous milieu, shown herein to be pH dependent. In addition, electron paramagnetic resonance (EPR) spectroscopy was used to define the stability of the nitroalkene moiety under aqueous conditions, specifically under conditions where nitric oxide (.NO) release could be detected. The experimental data were supported by density functional theory calculations using 6–311++G (d,p) basis set and B3LYP functional. Based on experimental and computational approaches, the relative electrophilicities of these NO2-FA are NO2-cLA >> NO2-LA > NO2-OA. Micellarization and vesiculation largely define these biophysical characteristics in aqueous, nucleophile-free conditions. At concentrations below the critical micellar concentration (CMC), monomeric NO2-FA predominate, while at greater concentrations a micellar phase consisting of self-assembled lipid structures predominates. The CMC, determined by dynamic light scattering in 0.1 M phosphate buffer (pH 7.4) at 25 °C, was 6.9 (NO2-LA) 10.6 (NO2-OA) and 42.3 μM (NO2-cLA), respectively. In aggregate, this study provides new insight into the biophysical properties of NO2-FA that are important for better understanding the cell signaling and pharmacological potential of this class of mediators. © 2020 The Authors},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

Fatty acid nitroalkenes (NO2-FA) are endogenously-generated products of the reaction of metabolic and inflammatory-derived nitrogen dioxide (.NO2) with unsaturated fatty acids. These species mediate signaling actions and induce adaptive responses in preclinical models of inflammatory and metabolic diseases. The nitroalkene substituent possesses an electrophilic nature, resulting in rapid and reversible reactions with biological nucleophiles such as cysteine, thus supporting post-translational modifications (PTM) of proteins having susceptible nucleophilic centers. These reactions contribute to enzyme regulation, modulation of inflammation and cell proliferation and the regulation of gene expression responses. Herein, focus is placed on the reduction-oxidation (redox) characteristics and stability of specific NO2-FA regioisomers having biological and clinical relevance; nitro-oleic acid (NO2-OA), bis-allylic nitro-linoleic acid (NO2-LA) and the conjugated diene-containing nitro-conjugated linoleic acid (NO2-cLA). Cyclic and alternating-current voltammetry and chronopotentiometry were used to the study of reduction potentials of these NO2-FA. R–NO2 reduction was observed around −0.8 V (vs. Ag/AgCl/3 M KCl) and is related to relative NO2-FA electrophilicity. This reduction process could be utilized for the evaluation of NO2-FA stability in aqueous milieu, shown herein to be pH dependent. In addition, electron paramagnetic resonance (EPR) spectroscopy was used to define the stability of the nitroalkene moiety under aqueous conditions, specifically under conditions where nitric oxide (.NO) release could be detected. The experimental data were supported by density functional theory calculations using 6–311++G (d,p) basis set and B3LYP functional. Based on experimental and computational approaches, the relative electrophilicities of these NO2-FA are NO2-cLA >> NO2-LA > NO2-OA. Micellarization and vesiculation largely define these biophysical characteristics in aqueous, nucleophile-free conditions. At concentrations below the critical micellar concentration (CMC), monomeric NO2-FA predominate, while at greater concentrations a micellar phase consisting of self-assembled lipid structures predominates. The CMC, determined by dynamic light scattering in 0.1 M phosphate buffer (pH 7.4) at 25 °C, was 6.9 (NO2-LA) 10.6 (NO2-OA) and 42.3 μM (NO2-cLA), respectively. In aggregate, this study provides new insight into the biophysical properties of NO2-FA that are important for better understanding the cell signaling and pharmacological potential of this class of mediators. © 2020 The Authors

Vasić, M. M.; Žák, T.; Pizúrová, N.; Simatović, I. S.; Minić, D. M.

Influence of Thermal Treatment on Microstructure and Corrosion Behavior of Amorphous Fe40Ni40B12Si8 Alloy Journal Article

In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 52 (1), pp. 34-45, 2021.

Abstract | Links | BibTeX

Koturevic, B.; Adnadjevic, B.; Jovanovic, J.

Comparative kinetic analysis of total hypericin extraction from Hypericum perforatum flowers carried out under simultaneous external physical field and cooling reaction system operational conditions Journal Article

In: Chemical Engineering Research and Design, 165 , pp. 106-117, 2021.

Abstract | Links | BibTeX

@article{Koturevic2021106,

title = {Comparative kinetic analysis of total hypericin extraction from Hypericum perforatum flowers carried out under simultaneous external physical field and cooling reaction system operational conditions},

author = {B. Koturevic and B. Adnadjevic and J. Jovanovic},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85096237598&doi=10.1016%2fj.cherd.2020.10.025&partnerID=40&md5=99bf6c9ac46ab6c808c1dbbf2edc8b06},

doi = {10.1016/j.cherd.2020.10.025},

year  = {2021},

date = {2021-01-01},

journal = {Chemical Engineering Research and Design},

volume = {165},

pages = {106-117},

abstract = {The comparative kinetic analysis of total hypericin (TH) extraction from the pre-extracted flowers of Hypericum perforatum carried out under simultaneous external physical field and cooling reaction system operational conditions (SEPFC) was performed. The kinetics curves of TH extraction in SEPFC were measured in the temperature range from T = 298 to 328 K. It was proved that presence of ultrasonic and microwave field cause increasing of the extraction rate compared to conventional isothermal extraction. The possibility of describing the kinetics of TH extraction in SEPFC with empirical (Elovich's model) and physically-based (film-theory model) were explored. The kinetic complexity of the process was examined with the differential isoconversional method. By applying the model-fitting method the proper kinetic model of TH extraction in SEPFC was found: [1 − (1 − α)(1/3)]2 = kM · t. The values of the extraction rate constant (kM), activation energy (Ea) and pre-exponential factor (ln A) of TH extraction were calculated. The effect of ultrasonic and microwave field on (a) kM; (b) Ea and (c) ln A of TH extraction was determined. The model mechanism of activation of hypericin molecule for extraction in SEPFC conditions was proposed. The values of wave number of resonant vibrations, vibration quantum number and anharmonicity parameter for the TH extraction are obtained. © 2020 Institution of Chemical Engineers},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

Milikić, J.; Balčiūnaitė, A.; Sukackienė, Z.; Mladenović, D.; Santos, D. M. F.; Tamašauskaitė-Tamašiūnaitė, L.; Šljukić, B.

Bimetallic co-based (Com Journal Article

In: Materials, 14 (1), pp. 1-15, 2021.

Abstract | Links | BibTeX

Ignjatović, S.; Blawert, C.; Serdechnova, M.; Karpushenkov, S.; Damjanović, M.; Karlova, P.; Dovzhenko, G.; Wieland, D. C. F.; Zeller-Plumhoff, B.; Starykevich, M.; Stojanović, S.; Damjanović-Vasilić, L.; Zheludkevich, M. L.

The Influence of In Situ Anatase Particle Addition on the Formation and Properties of Multifunctional Plasma Electrolytic Oxidation Coatings on AA2024 Aluminum Alloy Journal Article

In: Advanced Engineering Materials, 2021.

Abstract | Links | BibTeX

@article{Ignjatović2021b,

title = {The Influence of In Situ Anatase Particle Addition on the Formation and Properties of Multifunctional Plasma Electrolytic Oxidation Coatings on AA2024 Aluminum Alloy},

author = {S. Ignjatović and C. Blawert and M. Serdechnova and S. Karpushenkov and M. Damjanović and P. Karlova and G. Dovzhenko and D. C. F. Wieland and B. Zeller-Plumhoff and M. Starykevich and S. Stojanović and L. Damjanović-Vasilić and M. L. Zheludkevich},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85103078141&doi=10.1002%2fadem.202001527&partnerID=40&md5=f0908c6cbfc49b742c83fddd4d92daa5},

doi = {10.1002/adem.202001527},

year  = {2021},

date = {2021-01-01},

journal = {Advanced Engineering Materials},

abstract = {Plasma electrolytic oxidation (PEO) with in situ anatase particle addition is applied to functionalize the surface of AA2024 alloy. A base potassium titanium oxide oxalate dihydrate aqueous electrolyte is used with up to 30 g L−1 anatase particle addition. The coatings’ morphology and phase composition as a function of the anatase concentration in the electrolyte are characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and glow discharge optical emission spectroscopy (GDOES). Photocatalytic activity, stability in chloride solution, and tribological properties are also determined. The main coating forming phases are anatase and rutile on top of a mixed interface region consisting of TiAl2O5 as reaction product between the TiO2 and an Al2O3 barrier layer on top of the Al substrate. The mixed layer is extending with increasing amount of particles added, due to intensified discharges. In addition, anatase-to-rutile phase ratio increases due to the additional anatase particles in the electrolyte. Thus, the photocatalytic activity is improving with the particle addition. The coatings’ mechanical resistance is dropping first before increasing again with more particles added. Chemical and restored mechanical stability seems to be related to the extended mixed interface formation, which strengthens the bond to the substrate when more particles are added. © 2021 The Authors. Advanced Engineering Materials published by Wiley-VCH GmbH},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

Vasić, M. M.; Žák, T.; Minić, D. M.

Kinetics and influence of thermally induced crystallization of Fe,Ni-containing phases on thermomagnetic properties of Fe40Ni40B12Si8 amorphous alloy Journal Article

In: Journal of Thermal Analysis and Calorimetry, 2021.

Abstract | Links | BibTeX

Avdović, E. H.; Petrović, I. P.; Stevanović, M. J.; Saso, L.; Marković, J. M. Dimitrić; Filipović, N. D.; Živić, M. Ž.; Antić, T. N. Cvetić; Žižić, M. V.; Todorović, N. V.; Vukić, M.; Trifunović, S. R.; Marković, Z. S.

Synthesis and Biological Screening of New 4-Hydroxycoumarin Derivatives and Their Palladium(II) Complexes Journal Article

In: Oxidative Medicine and Cellular Longevity, 2021 , 2021.

Abstract | Links | BibTeX

@article{Avdović2021b,

title = {Synthesis and Biological Screening of New 4-Hydroxycoumarin Derivatives and Their Palladium(II) Complexes},

author = {E. H. Avdović and I. P. Petrović and M. J. Stevanović and L. Saso and J. M. Dimitrić Marković and N. D. Filipović and M. Ž. Živić and T. N. Cvetić Antić and M. V. Žižić and N. V. Todorović and M. Vukić and S. R. Trifunović and Z. S. Marković},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85105724813&doi=10.1155%2f2021%2f8849568&partnerID=40&md5=bf51ad49bd1a47ace950ddaa53b83d9b},

doi = {10.1155/2021/8849568},

year  = {2021},

date = {2021-01-01},

journal = {Oxidative Medicine and Cellular Longevity},

volume = {2021},

abstract = {Two newly synthesized 4-hydroxycoumarin bidentate ligands (L1 and L2) and their palladium(II) complexes (C1 and C2) were screened for their biological activities, in vitro and in vivo. Structures of new compounds were established based on elemental analysis, 1H NMR, 13C NMR, and IR spectroscopic techniques. The obtained compounds were tested for their antioxidative and cytotoxic activities and results pointed to selective antiradical activity of palladium(II) complexes towards •OH and -•OOH radicals and anti-ABTS (2,2′-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) cation radical) activity comparable to that of ascorbate. Results indicated the effect of C1 and C2 on the enzymatic activity of the antioxidative defense system. In vitro cytotoxicity assay performed on different carcinoma cell lines (HCT166, A375, and MIA PaCa-2), and one healthy fibroblast cell line (MRC-5) showed a cytotoxic effect of both C1 and C2, expressed as a decrease in carcinoma cells' viability, mostly by induction of apoptosis. In vivo toxicity tests performed on zebrafish embryos indicated different effects of C1 and C2, ranging from adverse developmental effect to no toxicity, depending on tested concentration. According to docking studies, both complexes (C1 and C2) showed better inhibitory activity in comparison to other palladium(II) complexes. © 2021 Edina H. Avdović et al.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

10.

Anićijević, V. J.; Lazarević-Pašti, T. D.; Vasić, V. M.; Anićijević, D. D. Vasić

An insight into the efficient dimethoate adsorption on graphene-based materials—a combined experimental and dft study Journal Article

In: Applied Sciences (Switzerland), 11 (9), 2021.

Abstract | Links | BibTeX

@article{Anićijević2021,

title = {An insight into the efficient dimethoate adsorption on graphene-based materials—a combined experimental and dft study},

author = {V. J. Anićijević and T. D. Lazarević-Pašti and V. M. Vasić and D. D. Vasić Anićijević},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85105738526&doi=10.3390%2fapp11094014&partnerID=40&md5=154c216a07b40f0ea2e10c97747cd81b},

doi = {10.3390/app11094014},

year  = {2021},

date = {2021-01-01},

journal = {Applied Sciences (Switzerland)},

volume = {11},

number = {9},

abstract = {(1) Background: The development of highly efficient methods for removing hazardous substances from the environment attracts increasing attention. Understanding the basic principles of the removal processes using graphene materials is equally essential to confirm their application efficiency and safety. (2) Methods: In this contribution, adsorption of pesticide dimethoate (DMT) on graphene-based materials has been investigated on the molecular level. (3) Results: The experimental results’ analysis revealed a cooperative binding mechanism of the DMT on the adsorption sites of investigated materials—graphene oxide (GO) and industrial graphene (IG). The adsorption data were analyzed using various adsorption isotherms to determine the thermodynamics of the adsorption process. The experimental results were correlated with Density Functional Theory (DFT) calculations of DMT adsorption on the model surfaces that appropriately describe the graphene materials’ reactive features. (4) Conclusions: Considering experimental results, calculated adsorption energies, optimized adsorption geometries, and electronic structure, it was proposed that the dispersive interactions determine the adsorption properties of DMT on plain graphene sites (physisorption). Additionally, it was shown that the existence of vacancy-type defect sites on the surfaces could induce strong and dissociative adsorption (chemisorption) of DMT. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

11.

Milanovic, Ž. B.; Markovic, Z. S.; Dimic, D. S.; Klisuric, O. R.; Radojevic, I. D.; Šeklic, D. S.; Živanovic, M. N.; Markovic, J. D.; Radulovic, M.; Avdovic, E. H.

Synthesis, structural characterization, biological activity and molecular docking study of 4,7-dihydroxycoumarinmodified by aminophenol derivatives Journal Article

In: Comptes Rendus Chimie, 24 (2), pp. 215-232, 2021.

Abstract | Links | BibTeX

12.

Ajdarić, J.; Ibrić, S.; Pavlović, A.; Ignjatović, L.; Ivković, B.

Prediction of drug stability using deep learning approach: Case study of esomeprazole 40 mg freeze-dried powder for solution Journal Article

In: Pharmaceutics, 13 (6), 2021.

Abstract | Links | BibTeX

@article{Ajdarić2021,

title = {Prediction of drug stability using deep learning approach: Case study of esomeprazole 40 mg freeze-dried powder for solution},

author = {J. Ajdarić and S. Ibrić and A. Pavlović and L. Ignjatović and B. Ivković},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85107948276&doi=10.3390%2fpharmaceutics13060829&partnerID=40&md5=73b24b30b5c3e93fb0082a0dea2965b0},

doi = {10.3390/pharmaceutics13060829},

year  = {2021},

date = {2021-01-01},

journal = {Pharmaceutics},

volume = {13},

number = {6},

abstract = {A critical step in the production of Esomeprazole powder for solution is a period between the filling process and lyophilization, where all vials, partially closed, are completely exposed to environmental influences. Excessive instability reflects in pH value variations caused by oxygen’s impact. In order to provide pH control, which consequently affects drug stability, Esomeprazole batches, produced in the same way, were kept in partially closed vials for 3 h at temperatures of 20◦C and −30◦C, after which they were lyophilized and stored for long-term stability for 36 months. The aim of the presented study was to apply a deep-learning algorithm for the prediction of the Esomeprazole stability profile and to determine the pH limit for the reconstituted solution of the final freeze-dried product that would assure a quality product profile over a storage period of 36 months. Multilayer perceptron (MLP) as a deep learning tool, with four layers, was used. The pH value of Esomeprazole solution and time of storage (months) were inputs for the network, while Esomeprazole assay and four main impurities were outputs of the network. In order to keep all related substances and Esomeprazole assay in accordance with specifications for the whole shelf life, the pH value for the reconstituted finish product should be set in the range of 10.4–10.6. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

13.

Maksimović, J. Dragišić; Mojović, M.; Vučinić, Ž.; Maksimović, V.

Spatial distribution of apoplastic antioxidative constituents in maize root Journal Article

In: Physiologia Plantarum, 2021.

Abstract | Links | BibTeX

@article{DragišićMaksimović2021,

title = {Spatial distribution of apoplastic antioxidative constituents in maize root},

author = {J. Dragišić Maksimović and M. Mojović and Ž. Vučinić and V. Maksimović},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85108365280&doi=10.1111%2fppl.13476&partnerID=40&md5=25d74508b1a75aa19bf65104d3635b34},

doi = {10.1111/ppl.13476},

year  = {2021},

date = {2021-01-01},

journal = {Physiologia Plantarum},

abstract = {Apoplastic antioxidative constituents (enzymes, primary and secondary metabolites, ROS) from different root zones of hydroponically grown maize (Zea mays L.) were investigated using a noninvasive isolation procedure: filter strip method. Filter strips were placed at specific positions on the root surface: apical zone (tip) and basal zone (base) to absorb apoplastic fluid. Three major classes of low-weight metabolites (organic acids, sugars, and phenolics) have been identified by HPLC-ECD. The longitudinal distribution of sugars and organic acids had the same pattern: higher concentration in the tip than the base, while it was vice versa for phenolics. The specific activities of guaiacol peroxidase, superoxide dismutase, and ascorbate peroxidase were higher in the apoplastic fluid from the root base than the tip, and their different isoforms were separated by isoelectric focusing. Electron paramagnetic resonance (EPR) spectroscopy coupled with the spin-trapping method using DEPMPO showed a persistent generation of hydroxyl radical in the root tip. In vivo EPR imaging of the whole maize root with membrane-permeable and impermeable aminoxyl spin-probes, enabling real-time detection of ROS formation within and outside the membranes, demonstrated ROS accumulation on the root surface, while endodermis and central cylinder were ROS free. For the first time in plant research, 2D EPR images enabled the direct demonstration of site-specific free radical production along the root. Highly sensitive analytical techniques combined with the filter strips, as a non-invasive tool, have increased our knowledge of metabolic processes occurring in the apoplast and their spatial–temporal changes in small regions of the intact root tissue. © 2021 Scandinavian Plant Physiology Society},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

14.

Maksimović, T. V.; Maksimović, J. P.; Tančić, P. I.; Potkonjak, N. I.; Nedić, Z. P.; Joksović, L. G.; Pagnacco, M. C.

A possible connection between phosphate tungsten bronzes properties and briggs-rauscher oscillatory reaction response Journal Article

In: Science of Sintering, 53 (2), pp. 223-235, 2021.

Abstract | Links | BibTeX

15.

Kočović, D. M.; Bajuk-Bogdanović, D.; Maslovarić, I.; Nedeljković, B. B.; Andjus, P. R.; Daković, M.

Raman spectral analysis of the brainstem and responses of neuroglia and cytokines in whole-body gamma-irradiated rats after administration of aminothiol-based radioprotector GL2011 Journal Article

In: Archives of Biological Sciences, 73 (2), pp. 161-173, 2021.

Abstract | Links | BibTeX

@article{Kočović2021161,

title = {Raman spectral analysis of the brainstem and responses of neuroglia and cytokines in whole-body gamma-irradiated rats after administration of aminothiol-based radioprotector GL2011},

author = {D. M. Kočović and D. Bajuk-Bogdanović and I. Maslovarić and B. B. Nedeljković and P. R. Andjus and M. Daković},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85111378234&doi=10.2298%2fABS210129011K&partnerID=40&md5=0e53dd640a818d5c60dd457ad180de2e},

doi = {10.2298/ABS210129011K},

year  = {2021},

date = {2021-01-01},

journal = {Archives of Biological Sciences},

volume = {73},

number = {2},

pages = {161-173},

abstract = {The search for an effective and non-toxic radioprotector is ongoing. We tested a novel, natural aminothiol-based radioprotector, GL2011, that was applied 30 min, 3 h or 6 h after the exposure of male albino Wistar rats to a 6.7 Gy mild dose of gamma radiation. The molecular signatures of radioprotection were investigated with Raman microspectroscopy of brainstem tissue samples. Morphological changes and activation of astrocytes and microglia were assessed by immunohistochemistry. Global markers of neuroinflammation were followed by ELISA to monitor blood plasma levels of proinflammatory (IL-6 and TNF-α) and anti-inflammatory (IL-10) cytokines. A thirty-day follow-up determined survival of unprotected animals 37.5%. A survival increase was observed after radioprotection (75%, irrespective of the time of application). Raman spectra revealed a slightly deleterious effect of radiation on nucleic acids in surviving animals that was mitigated with the radioprotector, as GL2011 preserved the morphology of both astrocytes and microglia, with reduced microglial infiltration. Cytokine assessment revealed an immunomodulatory effect of the novel radioprotector. The overall results point out the positive effects of a single dose of GL2011 applied at different times. The molecular and cellular changes in the brainstem indicate that the radioprotector applied after radiation conferred better protection, which underlines its translation to cure radiation accidents. © 2021. by the Serbian Biological Society.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

16.

Marinković, F.; Popović, D.; Jovanović, J.; Stanković, B.; Jevtić, S.; Adnadjević, B.

Thermal and dielectric properties of low-density polyethylene/NaA zeolite composites Journal Article

In: Polymer International, 2021.

Abstract | Links | BibTeX

@article{Marinković2021,

title = {Thermal and dielectric properties of low-density polyethylene/NaA zeolite composites},

author = {F. Marinković and D. Popović and J. Jovanović and B. Stanković and S. Jevtić and B. Adnadjević},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85113336189&doi=10.1002%2fpi.6284&partnerID=40&md5=11070ba90d1109d605bef108f81757c6},

doi = {10.1002/pi.6284},

year  = {2021},

date = {2021-01-01},

journal = {Polymer International},

abstract = {The effect of the weight fraction of NaA zeolite on thermal properties (specific heat capacity, thermal diffusivity, thermal conductivity) and dielectric properties (electrical conductivity, real and imaginary electric permittivity) of composites based on low-density polyethylene (LDPE) and NaA zeolite is examined. Composite samples containing from 5 to 30 wt% zeolite are prepared using the compression molding technique. The degree of dispersion and the weight fraction of filler in the LDPE/NaA zeolite composites are determined using X-ray diffraction. A linear decrease in the values of the specific heat capacity with an increase in the weight fraction of zeolite is observed using differential scanning calorimetry. The laser flash method is used to determine the thermal diffusivity of the composites. An increase in effective thermal diffusivity and abrupt increase in the range from 15 to 20 wt% of zeolite are established. It is demonstrated that effective thermal conductivity increases with an increase in the weight fraction of zeolite, and an abrupt increase in the range from 15 to 20 wt% is observed. Dielectric spectroscopy measurements are performed to determine the real and imaginary parts of permittivity. An increase of real and imaginary parts of permittivity of LDPE/NaA zeolite composites, with increasing weight fraction of zeolite, is established. Two relaxation peaks of the imaginary parts of permittivity of LDPE/NaA zeolite composites are detected. An increase of electrical conductivity with increasing weight fraction of zeolite and abrupt increase in the range 15 to 20 wt% are noticed. © 2021 Society of Industrial Chemistry. © 2021 Society of Industrial Chemistry.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

17.

Baljozović, M.; Liu, X.; Popova, O.; Girovsky, J.; Nowakowski, J.; Rossmann, H.; Nijs, T.; Moradi, M.; Mousavi, F.; Plumb, N. C.; Radović, M.; Ballav, N.; Dreiser, J.; Decurtins, S.; Pašti, I. A.; Skorodumova, N. V.; Liu, S. -X.; Jung, T. A.

Self-assembly and magnetic order of bi-molecular 2d spin lattices of m(Ii,iii) phthalocyanines on au(111) Journal Article

In: Magnetochemistry, 7 (8), 2021.

Abstract | Links | BibTeX

18.

Stanojević, A.; Milovanović, B.; Stanković, I.; Etinski, M.; Petković, M.

The significance of the metal cation in guanine-quartet - metalloporphyrin complexes Journal Article

In: Physical chemistry chemical physics : PCCP, 23 (1), pp. 574-584, 2021.

Abstract | Links | BibTeX

@article{Stanojević2021574,

title = {The significance of the metal cation in guanine-quartet - metalloporphyrin complexes},

author = {A. Stanojević and B. Milovanović and I. Stanković and M. Etinski and M. Petković},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85100125831&doi=10.1039%2fd0cp05798c&partnerID=40&md5=9d19d2256b272939139972d64f571154},

doi = {10.1039/d0cp05798c},

year  = {2021},

date = {2021-01-01},

journal = {Physical chemistry chemical physics : PCCP},

volume = {23},

number = {1},

pages = {574-584},

abstract = {The planarity and the appropriate size of the porphyrin ring make porphyrin derivatives ideal ligands for stacking to guanine quartets and they could thus be used as anti-cancer drugs. In this contribution we analyzed complexes of a guanine quartet with a porphyrin molecule, magnesium porphyrin and calcium porphyrin. As magnesium and calcium ions are located in the center and above the porphyrin ring, respectively, the two metalloporphyrins are expected to have different impacts on the target. The optimized structures of the three systems revealed geometrical changes in the guanine quartet upon complexation: while stacking of porphyrin and magnesium porphyrin does not induce significant changes, calcium porphyrin considerably distorts the quartet's structure, which has significant implications for the binding properties among guanine molecules. Ab initio molecular dynamics simulations revealed that the systems perform small fluctuations around the equilibrium structures. The largest atom displacements are performed by the calcium ion. The interacting quantum atoms methodology enabled analysis of the binding properties in the studied complexes. Interestingly, although the proximity of the calcium ion is responsible for the quartet's pronounced deformation and weakening of guanine-guanine binding, it also enables stronger binding of the metal ion to the quartet, resulting in a more stable complex. These results imply that metalloporphyrin-like ligands with out-of-plane central ions might represent promising drug candidates in anti-tumor treatment.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

19.

Milanović, Z. B.; Antonijević, M. R.; Amić, A. D.; Avdović, E. H.; Dimić, D. S.; Milenković, D. A.; Marković, Z. S.

Inhibitory activity of quercetin, its metabolite, and standard antiviral drugs towards enzymes essential for SARS-CoV-2: The role of acid-base equilibria Journal Article

In: RSC Advances, 11 (5), pp. 2838-2847, 2021.

Abstract | Links | BibTeX

@article{Milanović20212838,

title = {Inhibitory activity of quercetin, its metabolite, and standard antiviral drugs towards enzymes essential for SARS-CoV-2: The role of acid-base equilibria},

author = {Z. B. Milanović and M. R. Antonijević and A. D. Amić and E. H. Avdović and D. S. Dimić and D. A. Milenković and Z. S. Marković},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85099764622&doi=10.1039%2fd0ra09632f&partnerID=40&md5=c1b14a91e316378739c79c92c5955d75},

doi = {10.1039/d0ra09632f},

year  = {2021},

date = {2021-01-01},

journal = {RSC Advances},

volume = {11},

number = {5},

pages = {2838-2847},

abstract = {The recently declared global pandemic of a new human coronavirus called SARS-CoV-2, which causes respiratory tract disease COVID-19, has reached worldwide resonance and global efforts are being made to look for possible cures. Sophisticated molecular docking software, as well as available protein sequence and structure information, offer the ability to test the inhibition of two important targets of SARS-CoV-2, furin (FUR) enzyme, and spike glycoprotein, or spike protein (SP), that are key to host cell adhesion and hijacking. The potential inhibitory effect and mechanism of action of acid-base forms of different antiviral drugs, dominant at physiological pH, chloroquine (CQ), hydroxychloroquine (HCQ), and cinanserin (CIN), which have been shown to be effective in the treatment of SARS-CoV-2 virus, is reported with the special emphasis on their relative abundances. On the other hand, the potential inhibitory effect of the dominant acid-base forms of quercetin (Q) and its oxidative metabolite 2-(3,4-dihydroxybenzoyl)-2,4,6-trihydroxy-3(2H) benzofuranone (BZF), which are constituents of traditional food products believed to exhibit antiviral effects, was also examined. The undertaken study includes the determination of the major energy contributions to the binding energy as well as in-depth analysis of amino acid residues at the active pocket and possible interactions. The approach that we propose here may be an additional strategy for combating the deadly virus by preventing the first step of the virus replication cycle. Preliminary research has shown that the investigated compounds exert an inhibitory effect against the SARS-CoV-2 furin enzyme and spiked glycoprotein through different acid-base forms. These investigations may be helpful in creating potential therapeutic agents in the fight against the SARS-CoV-2 virus. On the other hand, the results we predicted in this computational study may be the basis for new experimental in vitro and in vivo studies. This journal is © 2021 The Royal Society of Chemistry.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

The recently declared global pandemic of a new human coronavirus called SARS-CoV-2, which causes respiratory tract disease COVID-19, has reached worldwide resonance and global efforts are being made to look for possible cures. Sophisticated molecular docking software, as well as available protein sequence and structure information, offer the ability to test the inhibition of two important targets of SARS-CoV-2, furin (FUR) enzyme, and spike glycoprotein, or spike protein (SP), that are key to host cell adhesion and hijacking. The potential inhibitory effect and mechanism of action of acid-base forms of different antiviral drugs, dominant at physiological pH, chloroquine (CQ), hydroxychloroquine (HCQ), and cinanserin (CIN), which have been shown to be effective in the treatment of SARS-CoV-2 virus, is reported with the special emphasis on their relative abundances. On the other hand, the potential inhibitory effect of the dominant acid-base forms of quercetin (Q) and its oxidative metabolite 2-(3,4-dihydroxybenzoyl)-2,4,6-trihydroxy-3(2H) benzofuranone (BZF), which are constituents of traditional food products believed to exhibit antiviral effects, was also examined. The undertaken study includes the determination of the major energy contributions to the binding energy as well as in-depth analysis of amino acid residues at the active pocket and possible interactions. The approach that we propose here may be an additional strategy for combating the deadly virus by preventing the first step of the virus replication cycle. Preliminary research has shown that the investigated compounds exert an inhibitory effect against the SARS-CoV-2 furin enzyme and spiked glycoprotein through different acid-base forms. These investigations may be helpful in creating potential therapeutic agents in the fight against the SARS-CoV-2 virus. On the other hand, the results we predicted in this computational study may be the basis for new experimental in vitro and in vivo studies. This journal is © 2021 The Royal Society of Chemistry.

20.

Vujković, M. J.; Etinski, M.; Vasić, B.; Kuzmanović, B.; Bajuk-Bogdanović, D.; Dominko, R.; Mentus, S.

Polyaniline as a charge storage material in an aqueous aluminum-based electrolyte: Can aluminum ions play the role of protons? Journal Article

In: Journal of Power Sources, 482 , 2021.

Abstract | Links | BibTeX

@article{Vujković2021,

title = {Polyaniline as a charge storage material in an aqueous aluminum-based electrolyte: Can aluminum ions play the role of protons?},

author = {M. J. Vujković and M. Etinski and B. Vasić and B. Kuzmanović and D. Bajuk-Bogdanović and R. Dominko and S. Mentus},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85091222062&doi=10.1016%2fj.jpowsour.2020.228937&partnerID=40&md5=bc783e11f3a2b9badbdef14b7eadac0f},

doi = {10.1016/j.jpowsour.2020.228937},

year  = {2021},

date = {2021-01-01},

journal = {Journal of Power Sources},

volume = {482},

abstract = {The high redox activity of polyaniline emeraldine salt (PANI-ES) was revealed in the aqueous solution of Al-salt, which makes this polymer attractive as an electrode material for aqueous aluminum electrochemical storage devices. Its redox behavior in Al(NO3)3, Al(NO3)3+HCl, AlCl3 and HCl was investigated by Cyclic Voltammetry and Chronopotentiometry. While the proton exchange determines PANI's redox behavior in strong acidic solutions, anion doping/dedoping is a more dominant process in less acidic Al-salt solutions. The formation/dissolution of solid-state nitrate complexes is proposed to happen during PANI's redox switching in Al(NO3)3, which causes disappearance and reappearance of grain boundaries, as revealed by AFM. Combined experimental and DFT approaches identify Al-salt as a secondary dopant of protonated PANI-ES (by Lewis acid-base complexation), which causes polaron→bipolaron conversion. The change in the redox mechanism of PANI-ES, caused by the substitution of HCl with Al(NO3)3, did not attenuate its charge storage ability. Moreover, PANI-ES delivers a higher capacitance in Al(NO3)3, amounting to 269 F g−1 at 10 A g−1. Furthermore, the use of Al(NO3)3 results in attenuated electrochemical PANI overoxidation, when compared to HCl, thus providing better capacitance retention upon potentiodynamic cycling. The results open novel perspective of using PANI-based materials for more suitable energy storage devices. © 2020 Elsevier B.V.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

1567 entries « ‹ 1 of 79 › »

2021

Radoičić, M.; Ćirić-Marjanović, G.; Miličević, D.; Suljovrujić, E.; Milošević, M.; Jakovljević, J. Kuljanin; Šaponjić, Z.

Fine-tuning of conductive and dielectric properties of polypyrrole/TiO2 nanocomposite-coated polyamide fabric Journal Article

In: Composite Interfaces, 28 (8), pp. 795-808, 2021.

Abstract | Links | BibTeX

@article{Radoičić2021795,

title = {Fine-tuning of conductive and dielectric properties of polypyrrole/TiO2 nanocomposite-coated polyamide fabric},

author = {M. Radoičić and G. Ćirić-Marjanović and D. Miličević and E. Suljovrujić and M. Milošević and J. Kuljanin Jakovljević and Z. Šaponjić},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85089447238&doi=10.1080%2f09276440.2020.1805219&partnerID=40&md5=a1076e4c6b30b3e10c0db0837b8ec69a},

doi = {10.1080/09276440.2020.1805219},

year  = {2021},

date = {2021-01-01},

journal = {Composite Interfaces},

volume = {28},

number = {8},

pages = {795-808},

abstract = {Structural, conductive and dielectric properties of hybrid Polypyrrole (PPy)-TiO2 nanocomposite-coated polyamide fabric (PA-PPy/TiO2) synthesized by in-situ oxidative polymerization of pyrrole on the surface of polyamide in the presence of colloidal TiO2 NPs (d ~ 4.5 nm) have been studied. Raman spectra confirmed salt form of PPy in both neat PPy and PPy/TiO2-coated PA fabric and indicated its complete coverage. SEM/EDX analysis confirmed presence of TiO2 NPs and changes in granular structure of PPy deposited on the surface of PA fiber depending on the amount of TiO2 NPs. The PA-PPy/TiO2 nanocomposite sample with lowest content of TiO2 NPs (6.79 At.% Ti) showed highest conductivity (~10−6 S/cm) and dissipation factor (tan δ) in the entire frequency range. The lowest amount of TiO2 NPs in the PA-PPy/TiO2 nanocomposite induced two to four orders of magnitude higher tan δ value, compared to neat PPy covered PA fabric, depending on the frequency range. Frequency dependence of real (ϵ′) and imaginary part (ϵ″) of the complex permittivity for neat PA and PPy/TiO2-coated PA fabrics follow the trend of changes in dissipation factor for the same TiO2 NPs concentrations. The presence of TiO2 NPs could be exploited for tuning the conductive and dielectric properties of a conductive layer. © 2020 Informa UK Limited, trading as Taylor & Francis Group.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

Mojović, Z.; Petrović, S.; Mojović, M.; Pavlović, S.; Rožić, L.

Ruthenium containing perovskites as electrode materials for 4-nitrophenol detection Journal Article

In: Journal of Physics and Chemistry of Solids, 148 , 2021.

Abstract | Links | BibTeX

Grippo, V.; Mojovic, M.; Pavicevic, A.; Kabelac, M.; Hubatka, F.; Turanek, J.; Zatloukalova, M.; Freeman, B. A.; Vacek, J.

Electrophilic characteristics and aqueous behavior of fatty acid nitroalkenes Journal Article

In: Redox Biology, 38 , 2021.

Abstract | Links | BibTeX

@article{Grippo2021,

title = {Electrophilic characteristics and aqueous behavior of fatty acid nitroalkenes},

author = {V. Grippo and M. Mojovic and A. Pavicevic and M. Kabelac and F. Hubatka and J. Turanek and M. Zatloukalova and B. A. Freeman and J. Vacek},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85096158093&doi=10.1016%2fj.redox.2020.101756&partnerID=40&md5=2da8f31c4fb805691910ec16078ae42b},

doi = {10.1016/j.redox.2020.101756},

year  = {2021},

date = {2021-01-01},

journal = {Redox Biology},

volume = {38},

abstract = {Fatty acid nitroalkenes (NO2-FA) are endogenously-generated products of the reaction of metabolic and inflammatory-derived nitrogen dioxide (.NO2) with unsaturated fatty acids. These species mediate signaling actions and induce adaptive responses in preclinical models of inflammatory and metabolic diseases. The nitroalkene substituent possesses an electrophilic nature, resulting in rapid and reversible reactions with biological nucleophiles such as cysteine, thus supporting post-translational modifications (PTM) of proteins having susceptible nucleophilic centers. These reactions contribute to enzyme regulation, modulation of inflammation and cell proliferation and the regulation of gene expression responses. Herein, focus is placed on the reduction-oxidation (redox) characteristics and stability of specific NO2-FA regioisomers having biological and clinical relevance; nitro-oleic acid (NO2-OA), bis-allylic nitro-linoleic acid (NO2-LA) and the conjugated diene-containing nitro-conjugated linoleic acid (NO2-cLA). Cyclic and alternating-current voltammetry and chronopotentiometry were used to the study of reduction potentials of these NO2-FA. R–NO2 reduction was observed around −0.8 V (vs. Ag/AgCl/3 M KCl) and is related to relative NO2-FA electrophilicity. This reduction process could be utilized for the evaluation of NO2-FA stability in aqueous milieu, shown herein to be pH dependent. In addition, electron paramagnetic resonance (EPR) spectroscopy was used to define the stability of the nitroalkene moiety under aqueous conditions, specifically under conditions where nitric oxide (.NO) release could be detected. The experimental data were supported by density functional theory calculations using 6–311++G (d,p) basis set and B3LYP functional. Based on experimental and computational approaches, the relative electrophilicities of these NO2-FA are NO2-cLA >> NO2-LA > NO2-OA. Micellarization and vesiculation largely define these biophysical characteristics in aqueous, nucleophile-free conditions. At concentrations below the critical micellar concentration (CMC), monomeric NO2-FA predominate, while at greater concentrations a micellar phase consisting of self-assembled lipid structures predominates. The CMC, determined by dynamic light scattering in 0.1 M phosphate buffer (pH 7.4) at 25 °C, was 6.9 (NO2-LA) 10.6 (NO2-OA) and 42.3 μM (NO2-cLA), respectively. In aggregate, this study provides new insight into the biophysical properties of NO2-FA that are important for better understanding the cell signaling and pharmacological potential of this class of mediators. © 2020 The Authors},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

Vasić, M. M.; Žák, T.; Pizúrová, N.; Simatović, I. S.; Minić, D. M.

Influence of Thermal Treatment on Microstructure and Corrosion Behavior of Amorphous Fe40Ni40B12Si8 Alloy Journal Article

In: Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 52 (1), pp. 34-45, 2021.

Abstract | Links | BibTeX

Koturevic, B.; Adnadjevic, B.; Jovanovic, J.

In: Chemical Engineering Research and Design, 165 , pp. 106-117, 2021.

Abstract | Links | BibTeX

@article{Koturevic2021106,

title = {Comparative kinetic analysis of total hypericin extraction from Hypericum perforatum flowers carried out under simultaneous external physical field and cooling reaction system operational conditions},

author = {B. Koturevic and B. Adnadjevic and J. Jovanovic},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85096237598&doi=10.1016%2fj.cherd.2020.10.025&partnerID=40&md5=99bf6c9ac46ab6c808c1dbbf2edc8b06},

doi = {10.1016/j.cherd.2020.10.025},

year  = {2021},

date = {2021-01-01},

journal = {Chemical Engineering Research and Design},

volume = {165},

pages = {106-117},

abstract = {The comparative kinetic analysis of total hypericin (TH) extraction from the pre-extracted flowers of Hypericum perforatum carried out under simultaneous external physical field and cooling reaction system operational conditions (SEPFC) was performed. The kinetics curves of TH extraction in SEPFC were measured in the temperature range from T = 298 to 328 K. It was proved that presence of ultrasonic and microwave field cause increasing of the extraction rate compared to conventional isothermal extraction. The possibility of describing the kinetics of TH extraction in SEPFC with empirical (Elovich's model) and physically-based (film-theory model) were explored. The kinetic complexity of the process was examined with the differential isoconversional method. By applying the model-fitting method the proper kinetic model of TH extraction in SEPFC was found: [1 − (1 − α)(1/3)]2 = kM · t. The values of the extraction rate constant (kM), activation energy (Ea) and pre-exponential factor (ln A) of TH extraction were calculated. The effect of ultrasonic and microwave field on (a) kM; (b) Ea and (c) ln A of TH extraction was determined. The model mechanism of activation of hypericin molecule for extraction in SEPFC conditions was proposed. The values of wave number of resonant vibrations, vibration quantum number and anharmonicity parameter for the TH extraction are obtained. © 2020 Institution of Chemical Engineers},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

Milikić, J.; Balčiūnaitė, A.; Sukackienė, Z.; Mladenović, D.; Santos, D. M. F.; Tamašauskaitė-Tamašiūnaitė, L.; Šljukić, B.

Bimetallic co-based (Com Journal Article

In: Materials, 14 (1), pp. 1-15, 2021.

Abstract | Links | BibTeX

The Influence of In Situ Anatase Particle Addition on the Formation and Properties of Multifunctional Plasma Electrolytic Oxidation Coatings on AA2024 Aluminum Alloy Journal Article

In: Advanced Engineering Materials, 2021.

Abstract | Links | BibTeX

@article{Ignjatović2021b,

title = {The Influence of In Situ Anatase Particle Addition on the Formation and Properties of Multifunctional Plasma Electrolytic Oxidation Coatings on AA2024 Aluminum Alloy},

author = {S. Ignjatović and C. Blawert and M. Serdechnova and S. Karpushenkov and M. Damjanović and P. Karlova and G. Dovzhenko and D. C. F. Wieland and B. Zeller-Plumhoff and M. Starykevich and S. Stojanović and L. Damjanović-Vasilić and M. L. Zheludkevich},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85103078141&doi=10.1002%2fadem.202001527&partnerID=40&md5=f0908c6cbfc49b742c83fddd4d92daa5},

doi = {10.1002/adem.202001527},

year  = {2021},

date = {2021-01-01},

journal = {Advanced Engineering Materials},

abstract = {Plasma electrolytic oxidation (PEO) with in situ anatase particle addition is applied to functionalize the surface of AA2024 alloy. A base potassium titanium oxide oxalate dihydrate aqueous electrolyte is used with up to 30 g L−1 anatase particle addition. The coatings’ morphology and phase composition as a function of the anatase concentration in the electrolyte are characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and glow discharge optical emission spectroscopy (GDOES). Photocatalytic activity, stability in chloride solution, and tribological properties are also determined. The main coating forming phases are anatase and rutile on top of a mixed interface region consisting of TiAl2O5 as reaction product between the TiO2 and an Al2O3 barrier layer on top of the Al substrate. The mixed layer is extending with increasing amount of particles added, due to intensified discharges. In addition, anatase-to-rutile phase ratio increases due to the additional anatase particles in the electrolyte. Thus, the photocatalytic activity is improving with the particle addition. The coatings’ mechanical resistance is dropping first before increasing again with more particles added. Chemical and restored mechanical stability seems to be related to the extended mixed interface formation, which strengthens the bond to the substrate when more particles are added. © 2021 The Authors. Advanced Engineering Materials published by Wiley-VCH GmbH},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

Vasić, M. M.; Žák, T.; Minić, D. M.

Kinetics and influence of thermally induced crystallization of Fe,Ni-containing phases on thermomagnetic properties of Fe40Ni40B12Si8 amorphous alloy Journal Article

In: Journal of Thermal Analysis and Calorimetry, 2021.

Abstract | Links | BibTeX

Synthesis and Biological Screening of New 4-Hydroxycoumarin Derivatives and Their Palladium(II) Complexes Journal Article

In: Oxidative Medicine and Cellular Longevity, 2021 , 2021.

Abstract | Links | BibTeX

@article{Avdović2021b,

title = {Synthesis and Biological Screening of New 4-Hydroxycoumarin Derivatives and Their Palladium(II) Complexes},

author = {E. H. Avdović and I. P. Petrović and M. J. Stevanović and L. Saso and J. M. Dimitrić Marković and N. D. Filipović and M. Ž. Živić and T. N. Cvetić Antić and M. V. Žižić and N. V. Todorović and M. Vukić and S. R. Trifunović and Z. S. Marković},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85105724813&doi=10.1155%2f2021%2f8849568&partnerID=40&md5=bf51ad49bd1a47ace950ddaa53b83d9b},

doi = {10.1155/2021/8849568},

year  = {2021},

date = {2021-01-01},

journal = {Oxidative Medicine and Cellular Longevity},

volume = {2021},

abstract = {Two newly synthesized 4-hydroxycoumarin bidentate ligands (L1 and L2) and their palladium(II) complexes (C1 and C2) were screened for their biological activities, in vitro and in vivo. Structures of new compounds were established based on elemental analysis, 1H NMR, 13C NMR, and IR spectroscopic techniques. The obtained compounds were tested for their antioxidative and cytotoxic activities and results pointed to selective antiradical activity of palladium(II) complexes towards •OH and -•OOH radicals and anti-ABTS (2,2′-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) cation radical) activity comparable to that of ascorbate. Results indicated the effect of C1 and C2 on the enzymatic activity of the antioxidative defense system. In vitro cytotoxicity assay performed on different carcinoma cell lines (HCT166, A375, and MIA PaCa-2), and one healthy fibroblast cell line (MRC-5) showed a cytotoxic effect of both C1 and C2, expressed as a decrease in carcinoma cells' viability, mostly by induction of apoptosis. In vivo toxicity tests performed on zebrafish embryos indicated different effects of C1 and C2, ranging from adverse developmental effect to no toxicity, depending on tested concentration. According to docking studies, both complexes (C1 and C2) showed better inhibitory activity in comparison to other palladium(II) complexes. © 2021 Edina H. Avdović et al.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

Anićijević, V. J.; Lazarević-Pašti, T. D.; Vasić, V. M.; Anićijević, D. D. Vasić

An insight into the efficient dimethoate adsorption on graphene-based materials—a combined experimental and dft study Journal Article

In: Applied Sciences (Switzerland), 11 (9), 2021.

Abstract | Links | BibTeX

@article{Anićijević2021,

title = {An insight into the efficient dimethoate adsorption on graphene-based materials—a combined experimental and dft study},

author = {V. J. Anićijević and T. D. Lazarević-Pašti and V. M. Vasić and D. D. Vasić Anićijević},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85105738526&doi=10.3390%2fapp11094014&partnerID=40&md5=154c216a07b40f0ea2e10c97747cd81b},

doi = {10.3390/app11094014},

year  = {2021},

date = {2021-01-01},

journal = {Applied Sciences (Switzerland)},

volume = {11},

number = {9},

abstract = {(1) Background: The development of highly efficient methods for removing hazardous substances from the environment attracts increasing attention. Understanding the basic principles of the removal processes using graphene materials is equally essential to confirm their application efficiency and safety. (2) Methods: In this contribution, adsorption of pesticide dimethoate (DMT) on graphene-based materials has been investigated on the molecular level. (3) Results: The experimental results’ analysis revealed a cooperative binding mechanism of the DMT on the adsorption sites of investigated materials—graphene oxide (GO) and industrial graphene (IG). The adsorption data were analyzed using various adsorption isotherms to determine the thermodynamics of the adsorption process. The experimental results were correlated with Density Functional Theory (DFT) calculations of DMT adsorption on the model surfaces that appropriately describe the graphene materials’ reactive features. (4) Conclusions: Considering experimental results, calculated adsorption energies, optimized adsorption geometries, and electronic structure, it was proposed that the dispersive interactions determine the adsorption properties of DMT on plain graphene sites (physisorption). Additionally, it was shown that the existence of vacancy-type defect sites on the surfaces could induce strong and dissociative adsorption (chemisorption) of DMT. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

Milanovic, Ž. B.; Markovic, Z. S.; Dimic, D. S.; Klisuric, O. R.; Radojevic, I. D.; Šeklic, D. S.; Živanovic, M. N.; Markovic, J. D.; Radulovic, M.; Avdovic, E. H.

Synthesis, structural characterization, biological activity and molecular docking study of 4,7-dihydroxycoumarinmodified by aminophenol derivatives Journal Article

In: Comptes Rendus Chimie, 24 (2), pp. 215-232, 2021.

Abstract | Links | BibTeX

Ajdarić, J.; Ibrić, S.; Pavlović, A.; Ignjatović, L.; Ivković, B.

Prediction of drug stability using deep learning approach: Case study of esomeprazole 40 mg freeze-dried powder for solution Journal Article

In: Pharmaceutics, 13 (6), 2021.

Abstract | Links | BibTeX

@article{Ajdarić2021,

title = {Prediction of drug stability using deep learning approach: Case study of esomeprazole 40 mg freeze-dried powder for solution},

author = {J. Ajdarić and S. Ibrić and A. Pavlović and L. Ignjatović and B. Ivković},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85107948276&doi=10.3390%2fpharmaceutics13060829&partnerID=40&md5=73b24b30b5c3e93fb0082a0dea2965b0},

doi = {10.3390/pharmaceutics13060829},

year  = {2021},

date = {2021-01-01},

journal = {Pharmaceutics},

volume = {13},

number = {6},

abstract = {A critical step in the production of Esomeprazole powder for solution is a period between the filling process and lyophilization, where all vials, partially closed, are completely exposed to environmental influences. Excessive instability reflects in pH value variations caused by oxygen’s impact. In order to provide pH control, which consequently affects drug stability, Esomeprazole batches, produced in the same way, were kept in partially closed vials for 3 h at temperatures of 20◦C and −30◦C, after which they were lyophilized and stored for long-term stability for 36 months. The aim of the presented study was to apply a deep-learning algorithm for the prediction of the Esomeprazole stability profile and to determine the pH limit for the reconstituted solution of the final freeze-dried product that would assure a quality product profile over a storage period of 36 months. Multilayer perceptron (MLP) as a deep learning tool, with four layers, was used. The pH value of Esomeprazole solution and time of storage (months) were inputs for the network, while Esomeprazole assay and four main impurities were outputs of the network. In order to keep all related substances and Esomeprazole assay in accordance with specifications for the whole shelf life, the pH value for the reconstituted finish product should be set in the range of 10.4–10.6. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

Maksimović, J. Dragišić; Mojović, M.; Vučinić, Ž.; Maksimović, V.

Spatial distribution of apoplastic antioxidative constituents in maize root Journal Article

In: Physiologia Plantarum, 2021.

Abstract | Links | BibTeX

@article{DragišićMaksimović2021,

title = {Spatial distribution of apoplastic antioxidative constituents in maize root},

author = {J. Dragišić Maksimović and M. Mojović and Ž. Vučinić and V. Maksimović},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85108365280&doi=10.1111%2fppl.13476&partnerID=40&md5=25d74508b1a75aa19bf65104d3635b34},

doi = {10.1111/ppl.13476},

year  = {2021},

date = {2021-01-01},

journal = {Physiologia Plantarum},

abstract = {Apoplastic antioxidative constituents (enzymes, primary and secondary metabolites, ROS) from different root zones of hydroponically grown maize (Zea mays L.) were investigated using a noninvasive isolation procedure: filter strip method. Filter strips were placed at specific positions on the root surface: apical zone (tip) and basal zone (base) to absorb apoplastic fluid. Three major classes of low-weight metabolites (organic acids, sugars, and phenolics) have been identified by HPLC-ECD. The longitudinal distribution of sugars and organic acids had the same pattern: higher concentration in the tip than the base, while it was vice versa for phenolics. The specific activities of guaiacol peroxidase, superoxide dismutase, and ascorbate peroxidase were higher in the apoplastic fluid from the root base than the tip, and their different isoforms were separated by isoelectric focusing. Electron paramagnetic resonance (EPR) spectroscopy coupled with the spin-trapping method using DEPMPO showed a persistent generation of hydroxyl radical in the root tip. In vivo EPR imaging of the whole maize root with membrane-permeable and impermeable aminoxyl spin-probes, enabling real-time detection of ROS formation within and outside the membranes, demonstrated ROS accumulation on the root surface, while endodermis and central cylinder were ROS free. For the first time in plant research, 2D EPR images enabled the direct demonstration of site-specific free radical production along the root. Highly sensitive analytical techniques combined with the filter strips, as a non-invasive tool, have increased our knowledge of metabolic processes occurring in the apoplast and their spatial–temporal changes in small regions of the intact root tissue. © 2021 Scandinavian Plant Physiology Society},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

Maksimović, T. V.; Maksimović, J. P.; Tančić, P. I.; Potkonjak, N. I.; Nedić, Z. P.; Joksović, L. G.; Pagnacco, M. C.

A possible connection between phosphate tungsten bronzes properties and briggs-rauscher oscillatory reaction response Journal Article

In: Science of Sintering, 53 (2), pp. 223-235, 2021.

Abstract | Links | BibTeX

Kočović, D. M.; Bajuk-Bogdanović, D.; Maslovarić, I.; Nedeljković, B. B.; Andjus, P. R.; Daković, M.

Raman spectral analysis of the brainstem and responses of neuroglia and cytokines in whole-body gamma-irradiated rats after administration of aminothiol-based radioprotector GL2011 Journal Article

In: Archives of Biological Sciences, 73 (2), pp. 161-173, 2021.

Abstract | Links | BibTeX

@article{Kočović2021161,

title = {Raman spectral analysis of the brainstem and responses of neuroglia and cytokines in whole-body gamma-irradiated rats after administration of aminothiol-based radioprotector GL2011},

author = {D. M. Kočović and D. Bajuk-Bogdanović and I. Maslovarić and B. B. Nedeljković and P. R. Andjus and M. Daković},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85111378234&doi=10.2298%2fABS210129011K&partnerID=40&md5=0e53dd640a818d5c60dd457ad180de2e},

doi = {10.2298/ABS210129011K},

year  = {2021},

date = {2021-01-01},

journal = {Archives of Biological Sciences},

volume = {73},

number = {2},

pages = {161-173},

abstract = {The search for an effective and non-toxic radioprotector is ongoing. We tested a novel, natural aminothiol-based radioprotector, GL2011, that was applied 30 min, 3 h or 6 h after the exposure of male albino Wistar rats to a 6.7 Gy mild dose of gamma radiation. The molecular signatures of radioprotection were investigated with Raman microspectroscopy of brainstem tissue samples. Morphological changes and activation of astrocytes and microglia were assessed by immunohistochemistry. Global markers of neuroinflammation were followed by ELISA to monitor blood plasma levels of proinflammatory (IL-6 and TNF-α) and anti-inflammatory (IL-10) cytokines. A thirty-day follow-up determined survival of unprotected animals 37.5%. A survival increase was observed after radioprotection (75%, irrespective of the time of application). Raman spectra revealed a slightly deleterious effect of radiation on nucleic acids in surviving animals that was mitigated with the radioprotector, as GL2011 preserved the morphology of both astrocytes and microglia, with reduced microglial infiltration. Cytokine assessment revealed an immunomodulatory effect of the novel radioprotector. The overall results point out the positive effects of a single dose of GL2011 applied at different times. The molecular and cellular changes in the brainstem indicate that the radioprotector applied after radiation conferred better protection, which underlines its translation to cure radiation accidents. © 2021. by the Serbian Biological Society.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

Marinković, F.; Popović, D.; Jovanović, J.; Stanković, B.; Jevtić, S.; Adnadjević, B.

Thermal and dielectric properties of low-density polyethylene/NaA zeolite composites Journal Article

In: Polymer International, 2021.

Abstract | Links | BibTeX

@article{Marinković2021,

title = {Thermal and dielectric properties of low-density polyethylene/NaA zeolite composites},

author = {F. Marinković and D. Popović and J. Jovanović and B. Stanković and S. Jevtić and B. Adnadjević},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85113336189&doi=10.1002%2fpi.6284&partnerID=40&md5=11070ba90d1109d605bef108f81757c6},

doi = {10.1002/pi.6284},

year  = {2021},

date = {2021-01-01},

journal = {Polymer International},

abstract = {The effect of the weight fraction of NaA zeolite on thermal properties (specific heat capacity, thermal diffusivity, thermal conductivity) and dielectric properties (electrical conductivity, real and imaginary electric permittivity) of composites based on low-density polyethylene (LDPE) and NaA zeolite is examined. Composite samples containing from 5 to 30 wt% zeolite are prepared using the compression molding technique. The degree of dispersion and the weight fraction of filler in the LDPE/NaA zeolite composites are determined using X-ray diffraction. A linear decrease in the values of the specific heat capacity with an increase in the weight fraction of zeolite is observed using differential scanning calorimetry. The laser flash method is used to determine the thermal diffusivity of the composites. An increase in effective thermal diffusivity and abrupt increase in the range from 15 to 20 wt% of zeolite are established. It is demonstrated that effective thermal conductivity increases with an increase in the weight fraction of zeolite, and an abrupt increase in the range from 15 to 20 wt% is observed. Dielectric spectroscopy measurements are performed to determine the real and imaginary parts of permittivity. An increase of real and imaginary parts of permittivity of LDPE/NaA zeolite composites, with increasing weight fraction of zeolite, is established. Two relaxation peaks of the imaginary parts of permittivity of LDPE/NaA zeolite composites are detected. An increase of electrical conductivity with increasing weight fraction of zeolite and abrupt increase in the range 15 to 20 wt% are noticed. © 2021 Society of Industrial Chemistry. © 2021 Society of Industrial Chemistry.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

Self-assembly and magnetic order of bi-molecular 2d spin lattices of m(Ii,iii) phthalocyanines on au(111) Journal Article

In: Magnetochemistry, 7 (8), 2021.

Abstract | Links | BibTeX

Stanojević, A.; Milovanović, B.; Stanković, I.; Etinski, M.; Petković, M.

The significance of the metal cation in guanine-quartet - metalloporphyrin complexes Journal Article

In: Physical chemistry chemical physics : PCCP, 23 (1), pp. 574-584, 2021.

Abstract | Links | BibTeX

@article{Stanojević2021574,

title = {The significance of the metal cation in guanine-quartet - metalloporphyrin complexes},

author = {A. Stanojević and B. Milovanović and I. Stanković and M. Etinski and M. Petković},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85100125831&doi=10.1039%2fd0cp05798c&partnerID=40&md5=9d19d2256b272939139972d64f571154},

doi = {10.1039/d0cp05798c},

year  = {2021},

date = {2021-01-01},

journal = {Physical chemistry chemical physics : PCCP},

volume = {23},

number = {1},

pages = {574-584},

abstract = {The planarity and the appropriate size of the porphyrin ring make porphyrin derivatives ideal ligands for stacking to guanine quartets and they could thus be used as anti-cancer drugs. In this contribution we analyzed complexes of a guanine quartet with a porphyrin molecule, magnesium porphyrin and calcium porphyrin. As magnesium and calcium ions are located in the center and above the porphyrin ring, respectively, the two metalloporphyrins are expected to have different impacts on the target. The optimized structures of the three systems revealed geometrical changes in the guanine quartet upon complexation: while stacking of porphyrin and magnesium porphyrin does not induce significant changes, calcium porphyrin considerably distorts the quartet's structure, which has significant implications for the binding properties among guanine molecules. Ab initio molecular dynamics simulations revealed that the systems perform small fluctuations around the equilibrium structures. The largest atom displacements are performed by the calcium ion. The interacting quantum atoms methodology enabled analysis of the binding properties in the studied complexes. Interestingly, although the proximity of the calcium ion is responsible for the quartet's pronounced deformation and weakening of guanine-guanine binding, it also enables stronger binding of the metal ion to the quartet, resulting in a more stable complex. These results imply that metalloporphyrin-like ligands with out-of-plane central ions might represent promising drug candidates in anti-tumor treatment.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

Milanović, Z. B.; Antonijević, M. R.; Amić, A. D.; Avdović, E. H.; Dimić, D. S.; Milenković, D. A.; Marković, Z. S.

Inhibitory activity of quercetin, its metabolite, and standard antiviral drugs towards enzymes essential for SARS-CoV-2: The role of acid-base equilibria Journal Article

In: RSC Advances, 11 (5), pp. 2838-2847, 2021.

Abstract | Links | BibTeX

@article{Milanović20212838,

title = {Inhibitory activity of quercetin, its metabolite, and standard antiviral drugs towards enzymes essential for SARS-CoV-2: The role of acid-base equilibria},

author = {Z. B. Milanović and M. R. Antonijević and A. D. Amić and E. H. Avdović and D. S. Dimić and D. A. Milenković and Z. S. Marković},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85099764622&doi=10.1039%2fd0ra09632f&partnerID=40&md5=c1b14a91e316378739c79c92c5955d75},

doi = {10.1039/d0ra09632f},

year  = {2021},

date = {2021-01-01},

journal = {RSC Advances},

volume = {11},

number = {5},

pages = {2838-2847},

abstract = {The recently declared global pandemic of a new human coronavirus called SARS-CoV-2, which causes respiratory tract disease COVID-19, has reached worldwide resonance and global efforts are being made to look for possible cures. Sophisticated molecular docking software, as well as available protein sequence and structure information, offer the ability to test the inhibition of two important targets of SARS-CoV-2, furin (FUR) enzyme, and spike glycoprotein, or spike protein (SP), that are key to host cell adhesion and hijacking. The potential inhibitory effect and mechanism of action of acid-base forms of different antiviral drugs, dominant at physiological pH, chloroquine (CQ), hydroxychloroquine (HCQ), and cinanserin (CIN), which have been shown to be effective in the treatment of SARS-CoV-2 virus, is reported with the special emphasis on their relative abundances. On the other hand, the potential inhibitory effect of the dominant acid-base forms of quercetin (Q) and its oxidative metabolite 2-(3,4-dihydroxybenzoyl)-2,4,6-trihydroxy-3(2H) benzofuranone (BZF), which are constituents of traditional food products believed to exhibit antiviral effects, was also examined. The undertaken study includes the determination of the major energy contributions to the binding energy as well as in-depth analysis of amino acid residues at the active pocket and possible interactions. The approach that we propose here may be an additional strategy for combating the deadly virus by preventing the first step of the virus replication cycle. Preliminary research has shown that the investigated compounds exert an inhibitory effect against the SARS-CoV-2 furin enzyme and spiked glycoprotein through different acid-base forms. These investigations may be helpful in creating potential therapeutic agents in the fight against the SARS-CoV-2 virus. On the other hand, the results we predicted in this computational study may be the basis for new experimental in vitro and in vivo studies. This journal is © 2021 The Royal Society of Chemistry.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

Vujković, M. J.; Etinski, M.; Vasić, B.; Kuzmanović, B.; Bajuk-Bogdanović, D.; Dominko, R.; Mentus, S.

Polyaniline as a charge storage material in an aqueous aluminum-based electrolyte: Can aluminum ions play the role of protons? Journal Article

In: Journal of Power Sources, 482 , 2021.

Abstract | Links | BibTeX

@article{Vujković2021,

title = {Polyaniline as a charge storage material in an aqueous aluminum-based electrolyte: Can aluminum ions play the role of protons?},

author = {M. J. Vujković and M. Etinski and B. Vasić and B. Kuzmanović and D. Bajuk-Bogdanović and R. Dominko and S. Mentus},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85091222062&doi=10.1016%2fj.jpowsour.2020.228937&partnerID=40&md5=bc783e11f3a2b9badbdef14b7eadac0f},

doi = {10.1016/j.jpowsour.2020.228937},

year  = {2021},

date = {2021-01-01},

journal = {Journal of Power Sources},

volume = {482},

abstract = {The high redox activity of polyaniline emeraldine salt (PANI-ES) was revealed in the aqueous solution of Al-salt, which makes this polymer attractive as an electrode material for aqueous aluminum electrochemical storage devices. Its redox behavior in Al(NO3)3, Al(NO3)3+HCl, AlCl3 and HCl was investigated by Cyclic Voltammetry and Chronopotentiometry. While the proton exchange determines PANI's redox behavior in strong acidic solutions, anion doping/dedoping is a more dominant process in less acidic Al-salt solutions. The formation/dissolution of solid-state nitrate complexes is proposed to happen during PANI's redox switching in Al(NO3)3, which causes disappearance and reappearance of grain boundaries, as revealed by AFM. Combined experimental and DFT approaches identify Al-salt as a secondary dopant of protonated PANI-ES (by Lewis acid-base complexation), which causes polaron→bipolaron conversion. The change in the redox mechanism of PANI-ES, caused by the substitution of HCl with Al(NO3)3, did not attenuate its charge storage ability. Moreover, PANI-ES delivers a higher capacitance in Al(NO3)3, amounting to 269 F g−1 at 10 A g−1. Furthermore, the use of Al(NO3)3 results in attenuated electrochemical PANI overoxidation, when compared to HCl, thus providing better capacitance retention upon potentiodynamic cycling. The results open novel perspective of using PANI-based materials for more suitable energy storage devices. © 2020 Elsevier B.V.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

1567 entries « ‹ 1 of 79 › »