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Prakash Sista, Michael C. Biewer and Mihaela C. Stefan Benzo[1,2-b:4,5-b′]dithiophene Building Block for the Synthesis of Semiconducting Polymers Macromolecular Rapid Communications 33

Article first published online: 7 DEC 2011 | DOI: 10.1002/marc.201100671

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The synthesis of fused-ring benzo[1,2- b:4,5-b′]dithiophene (BDT) small molecules and semiconducting polymers is described. The BDT building block allows the incorporation of substituents on the central benzene core while maintaining planarity of the two thiophene units. Various donor–acceptor polymers containing benzodithiophene showed good performance in organic solar cells.

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