Synthesis, polymerization and characterization of substituted dithieno[3,4-b:3′,4′-d]thiophenes
作者:Seiji Inaoka、David M. Collard
DOI:10.1039/a900075e
日期:——
Chemical or electrochemical oxidation of substituted dithieno[3,4-b:3â²,4â²-d]thiophenes provides polymers with defined regiochemical structures. These materials have lower bandgaps (0.7-0.9 eV) than the unsubstituted fused heteroarene. Potential cycling of the 1,3-dimethyl substituted polymer film shows repetitive p- and n-dopability. The chemically-prepared dioctyl analog is soluble in common solvents such as chloroform, dichloromethane and THF. However, overoxidation of the polymers at an electrode surface presents a limitation to the polymerization of substituted analogs of the parent fused heteroarene.
取代的二噻吩[3,4-b:3'、4'-d]噻吩的化学或电化学氧化可获得具有明确定构化学结构的聚合物。这些材料的带隙(0.7-0.9 eV)低于未取代的融合杂环芳烃。1,3-二甲基取代聚合物薄膜的潜在循环显示出重复的p-和n掺杂能力。化学合成的二辛基类似物可溶于氯仿、二氯甲烷和四氢呋喃等常见溶剂。然而,聚合物在电极表面的过氧化反应限制了母体融合杂环芳烃取代类似物的聚合。