Diverse composites of metal-complexes and PEDOT facilitated by metal-free vapour phase polymerization

Shravan S. Acharya, Christopher D. Easton, Thomas M. McCoy, Leone Spiccia, C. André Ohlin, Bjorn Winther Jensen

    Research output: Contribution to journalArticle

    2 Citations (Scopus)

    Abstract

    Oxidative polymerization for the manufacture of conducting polymers such as poly(3,4-ethylenedioxy-thiophene) has traditionally employed iron(III) salts. Demonstrated in this study is vapour phase polymerization of 3,4-ethylenedio- xythiophene using a metal-free oxidant, ammonium persulfate, leading to films with an estimated conductivity of 75. S/cm. Additionally, a route for embedding active transition metal complexes into these poly(3,4-ethylenedioxythiophene)/-poly(styrene-4-sulfonate) (PEDOT/PSS) films via vapour assisted complexation is outlined. Here, the vapour pressure of solid ligands around their melting temperatures was exploited to ensure complexation to metal ions added into the oxidant mixture prior to polymerization of PEDOT. Four composite systems are discussed, viz. PEDOT/PSS embedded with tris(8-hydroxyquinolinato)cobalt(III), tris(2,2-bipyridine)cobalt(II), tris(1,10- phenanthroline)cobalt(II) and tris(8-hyd-roxyquinolinato)aluminium(III). Using these composites, electrochemical reduction of nitrite to ammonia with a faradaic efficiency of 61% was reported.

    Original languageEnglish
    JournalReactive and Functional Polymers
    DOIs
    Publication statusAccepted/In press - 2017 Jan 6

    Fingerprint

    Coordination Complexes
    Metal complexes
    Cobalt
    polymerization
    cobalt
    Polymerization
    Styrene
    Metals
    Vapors
    sulfonate
    Complexation
    Oxidants
    complexation
    oxidant
    metal
    Composite materials
    Vapor Pressure
    Ammonium persulfate
    Thiophenes
    Conducting polymers

    Keywords

    • Ammonia
    • Conducting polymers
    • Nitrite
    • Reduction
    • Vapour pressure

    ASJC Scopus subject areas

    • Chemistry(all)
    • Environmental Chemistry
    • Biochemistry
    • Chemical Engineering(all)
    • Polymers and Plastics
    • Materials Chemistry

    Cite this

    Diverse composites of metal-complexes and PEDOT facilitated by metal-free vapour phase polymerization. / Acharya, Shravan S.; Easton, Christopher D.; McCoy, Thomas M.; Spiccia, Leone; Ohlin, C. André; Winther Jensen, Bjorn.

    In: Reactive and Functional Polymers, 06.01.2017.

    Research output: Contribution to journalArticle

    Acharya, Shravan S. ; Easton, Christopher D. ; McCoy, Thomas M. ; Spiccia, Leone ; Ohlin, C. André ; Winther Jensen, Bjorn. / Diverse composites of metal-complexes and PEDOT facilitated by metal-free vapour phase polymerization. In: Reactive and Functional Polymers. 2017.
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