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Two series of new polymers with medium and wide bandgaps to match fullerene (PC71BM) and fullerene‐free 3,9‐bis(2‐methylene‐(3‐(1,1‐dicyanomethylene)‐indanone))‐5,5,11,11‐tetrakis(4‐hexylphenyl)‐dithieno[2,3‐d:2′,3′‐d′]‐s‐indaceno[1,2‐b:5,6‐b′]dithiophene (ITIC) acceptors are designed and synthesized, respectively. For constructing the key donor building blocks, the effective symmetry‐breaking strategy...
Two 1D–2D asymmetric benzodithiophenes (BDTs) as donor building blocks are designed and synthesized, combining the advantages of both 1D and 2D symmetric BDTs. The photovoltaic properties of the asymmetric BDT‐based polymers are improved greatly in comparison with corresponding symmetric BDT‐based polymers. This work provides a new approach to design prospective organic optoelectronic materials employing...
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