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 (M n = 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.
原文 | ???core.languages.en_GB??? |
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頁(從 - 到) | 7783-7790 |
頁數 | 8 |
期刊 | Macromolecules |
卷 | 45 |
發行號 | 19 |
DOIs | |
出版狀態 | 已出版 - 9 10月 2012 |