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    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/80008

    Title: Facile Syntheses of Dioxythiophene-Based Conjugated Polymers by Direct C−H Arylation
    Authors: Zhao, Haichao;Liu, Ching-Yuan;Luo, Shyh-Chyang;Zhu, Bo;Wang, Tsai-Hui;Hsu, Hsiu-Fu;Yu,Hsiao-hua
    Contributors: 淡江大學化學學系
    Date: 2012-09
    Issue Date: 2013-01-16 15:28:49 (UTC+8)
    Publisher: Washington DC: American Chemical Society
    Abstract: Various substituted dioxythiophenes bearing 3,4-propylenedioxythiophenes (ProDOT) and 3,4-ethylenedioxythiophene (EDOT) moieties successfully undergo Pd-catalyzed direct C–H arylation to yield π-conjugated polymers. The effects of palladium catalysts, phosphine ligands or additives, and functional groups on this facile polycondensation approach are investigated. Polymers from alkoxy-substituted ProDOT are synthesized with reasonable molecular weight (Mn = 6100–9600) and low PDI (1.3–1.9). Four substituted EDOT with alkoxy or protected functional groups also undergo direct C–H arylation polycondensation to yield corresponding polymers. The obtained polydioxythiophenes exhibit UV–vis absorptions ranging from 480 to 590 nm, and these conjugated polymers are electroactive and reversibly switched between the oxidized and neutral states upon applying potentials.
    Relation: Macromolecules 45(19), pp.7783–7790
    DOI: 10.1021/ma300719n
    Appears in Collections:[Graduate Institute & Department of Chemistry] Journal Article

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