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Conductivity and morphology of polyaniline and polypyrrole prepared in the presence of organic dyes
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SYSNO ASEP 0523878 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Conductivity and morphology of polyaniline and polypyrrole prepared in the presence of organic dyes Author(s) Stejskal, Jaroslav (UMCH-V) RID, ORCID, SAI
Prokeš, J. (CZ)Article number 116373 Source Title Synthetic Metals. - : Elsevier - ISSN 0379-6779
Roč. 264, June (2020), s. 1-10Number of pages 10 s. Language eng - English Country CH - Switzerland Keywords conducting polymers ; polyaniline ; polypyrrole Subject RIV CD - Macromolecular Chemistry OECD category Polymer science R&D Projects GA19-04859S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support UMCH-V - RVO:61389013 UT WOS 000531075700012 EID SCOPUS 85083399072 DOI 10.1016/j.synthmet.2020.116373 Annotation Polyaniline was prepared by the oxidation of aniline hydrochloride or aniline with ammonium peroxydisulfate in the presence of 37 anionic or cationic organic dyes. Similar preparation of polypyrrole used iron(III) chloride as an oxidant. The goal of the study is to evaluate the effect of dyes on the conductivity of both polymers and their morphology at nanoscale. The preparation of polyaniline using aniline hydrochloride as a monomer was unaffected by the dyes presence, its conductivity was of the order of units S cm−1 and morphology was globular. The similar oxidation of aniline has led to the products with reduced conductivity and unresolved morphology. On the other hand, the presence of dyes had significant impact on the conductivity of polypyrrole, and all tested dyes improved the conductivity, for example methyl red from 1 S cm−1 to 42 S cm−1. Most of the samples were globular, but several dyes, such as Acid Blue 25, acriflavine, methyl orange, methylene blue, neutral red, phenosafranin or safranin stimulated the growth of one-dimensional morphologies, polypyrrole nanofibers or nanotubes. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2021 Electronic address https://www.sciencedirect.com/science/article/pii/S0379677920301430?via%3Dihub
Number of the records: 1