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Non-conducting polyaniline nanofibrils and their physico-chemical behavior
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SYSNO ASEP 0525023 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Non-conducting polyaniline nanofibrils and their physico-chemical behavior Author(s) Kohut, Olena (FZU-D)
Dragounová, Kateřina (FZU-D) ORCID
Ukraintsev, Egor (FZU-D) RID, ORCID
Szabó, Ondrej (FZU-D) ORCID, RID
Kromka, Alexander (FZU-D) RID, ORCID, SAI
Tomšík, Elena (UMCH-V) RID, ORCIDNumber of authors 6 Article number 108955 Source Title Vacuum. - : Elsevier - ISSN 0042-207X
Roč. 171, Jan (2020), s. 1-5Number of pages 5 s. Language eng - English Country GB - United Kingdom Keywords polyaniline ; Raman spectroscopy ; photoluminescence Subject RIV CG - Electrochemistry OECD category Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis) Subject RIV - cooperation Institute of Macromolecular Chemistry - Macromolecular Chemistry R&D Projects EF16_019/0000760 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GA17-19968S GA ČR - Czech Science Foundation (CSF) GA17-05095S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support FZU-D - RVO:68378271 ; UMCH-V - RVO:61389013 UT WOS 000502894000004 EID SCOPUS 85074235436 DOI 10.1016/j.vacuum.2019.108955 Annotation The work presented here aimed to synthesize the non-conducting form of PANI nanofibrils and to study their properties, which are determined by their chemical structure and morphology. Non-conducting PANI nanofibrils were synthesized by an alkali-based treatment process. Raman measurements revealed that synthesized PANI nanofibrils consist mainly of benzenoid units with a small number of quinoid units. Calculations based on Raman spectra show that ratio of benzenoid to quinoid units is 3:1. This ratio is 3 times higher than the characteristic/typical value for synthesized non-conducting PANI, as reported in the literature. Moreover, the photoluminescence of these non-conducting PANI nanofibrils (measured with excitation of 442 nm) possesses two maxima, with wavelengths of 550 nm and 1110 nm. These wavelengths correspond to photon energies of 2.25 eV and 1.12 eV, which resemble very long Stokes shifts of 108 nm and 658 nm, respectively. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2021 Electronic address https://doi.org/10.1016/j.vacuum.2019.108955
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