Abstract
Abstract C–H direct arylation reactions of thieno[3,2-b]thiophenes (TT) with dibromo-substituted aromatic compounds afforded five different kinds of TT-based conjugated polymers, including donor–acceptor and dye-containing polymers. Although various thiophene-based polymers have been synthesized previously via polycondensation using direct arylation reactions, our research demonstrates the first direct arylation polycondensation procedure using a TT monomer. The physical properties of the obtained polymers were evaluated by using UV–vis absorption spectroscopy and cyclic voltammetry. The dye-containing polymer showed photovoltaic responses in a bulk heterojunction solar cells with a fullerene derivative.
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