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    题名: Facile Syntheses of Dioxythiophene-Based Conjugated Polymers by Direct C−H Arylation
    作者: Zhao, Haichao;Liu, Ching-Yuan;Luo, Shyh-Chyang;Zhu, Bo;Wang, Tsai-Hui;Hsu, Hsiu-Fu;Yu,Hsiao-hua
    贡献者: 淡江大學化學學系
    日期: 2012-09
    上传时间: 2013-01-16 15:28:49 (UTC+8)
    出版者: Washington DC: American Chemical Society
    摘要: 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.
    關聯: Macromolecules 45(19), pp.7783–7790
    DOI: 10.1021/ma300719n
    显示于类别:[化學學系暨研究所] 期刊論文


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