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Conducting polypyrrole and polypyrrole/manganese dioxide composites prepared with a solid sacrificial oxidant of pyrrole

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    SYSNO ASEP0542357
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleConducting polypyrrole and polypyrrole/manganese dioxide composites prepared with a solid sacrificial oxidant of pyrrole
    Author(s) Sapurina, I. (CZ)
    Bubulinca, C. (CZ)
    Trchová, M. (CZ)
    Prokeš, J. (CZ)
    Stejskal, Jaroslav (UMCH-V) RID, ORCID, SAI
    Article number116807
    Source TitleSynthetic Metals. - : ELSEVIER SCIENCE SA - ISSN 0379-6779
    Roč. 278, August (2021)
    Number of pages7 s.
    Languageeng - English
    CountryCH - Switzerland
    Keywordsconducting polymer ; polypyrrole ; manganese dioxide
    Subject RIVCD - Macromolecular Chemistry
    OECD categoryPolymer science
    R&D ProjectsGA19-04859S GA ČR - Czech Science Foundation (CSF)
    Method of publishingLimited access
    Institutional supportUMCH-V - RVO:61389013
    UT WOS000680021100005
    EID SCOPUS85105714751
    DOI10.1016/j.synthmet.2021.116807
    AnnotationPolypyrrole was prepared by the oxidation of pyrrole with solid manganese dioxide. The present study concerns the chemistry of this process rather than materials properties of the products. The oxidant alone is insoluble in aqueous medium but the reductive dissolution takes place in the presence of pyrrole. Polypyrrole is the exclusive product below the stoichiometric mole ratio [MnO2]/[pyrrole] = 1.25, and polypyrrole/manganese dioxide composites result at higher ratios. Unlike with iron(III) chloride where protons are generated during the oxidation of pyrrole, with manganese dioxide they are consumed and water is a by-product. The sufficient acidity of the reaction medium is thus needed in order to obtain conducting materials. The presence of organic dyes in the preparation of polypyrrole improved the conductivity. One-dimensional morphology of polypyrrole was observed when methyl orange was introduced to the reaction mixture.
    WorkplaceInstitute of Macromolecular Chemistry
    ContactEva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358
    Year of Publishing2022
    Electronic addresshttps://www.sciencedirect.com/science/article/pii/S0379677921001120?via%3Dihub
Number of the records: 1