Počet záznamů: 1

Polyaniline nanostructures and the role of aniline oligomers in their formation

  1. 1.
    0349446 - UMCH-V 2011 RIV NL eng J - Článek v odborném periodiku
    Stejskal, Jaroslav - Sapurina, I. - Trchová, Miroslava
    Polyaniline nanostructures and the role of aniline oligomers in their formation.
    Progress in Polymer Science. Roč. 35, č. 12 (2010), s. 1420-1481 ISSN 0079-6700
    Grant CEP: GA MŠk ME 847; GA AV ČR IAA400500905; GA AV ČR IAA100500902; GA ČR GA203/08/0686; GA ČR GA202/09/1626
    Výzkumný záměr: CEZ:AV0Z40500505
    Klíčová slova: conducting polymer * nanofibers * nanotubes
    Kód oboru RIV: CD - Makromolekulární chemie
    Impakt faktor: 22.870, rok: 2010

    Polyaniline (PANI) is prepared by the oxidation of aniline. Depending on the acidity conditions during the chemical oxidation, different types of products can be identified. The aniline dimers, semidines, are the first oxidation products. In the next step, aniline trimers containing a phenazine moiety, the nucleates, are produced. At moderate acidity, pH> 3.5, the reaction pathway further leads to higher brown non-conducting aniline oligomers. Alternatively, when the acidity is sufficiently high, pH< 2.5, the nucleates convert to initiation centers that start the subsequent propagation of PANI chains. The formation of various polyaniline morphologies, viz. nanotubes, nanofibers, thin films, and colloidal particles, is reviewed and related to chemistry of aniline oxidation.
    Trvalý link: http://hdl.handle.net/11104/0006096