Journal
MACROMOLECULAR RAPID COMMUNICATIONS
Volume 34, Issue 6, Pages 522-527Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.201200737
Keywords
direct (hetero)arylation; Pd-catalysis; polycondensation; dithienyldiketopyrrolopyrrole (DTDPP)-based polymers; low bandgap
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Funding
- National High Technology Research and Development Program of China (863 Program) [2013AA031901]
- National NSF of China [21025205, 21272160, 20901052, 21021001]
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A concise, highly efficient palladium-catalyzed direct CH (hetero)arylation is developed to modularly assemble a diketopyrrolopyrrole (DTDPP)-based polymer library to screen low-bandgap and near-infrared (NIR) absorbing materials. The DTDPP-based copolymers P1 and P2 with an alternating donoracceptordonoracceptor (DADA) sequence and the homopolymer P9 exhibit planarity and excellent -conjugation, which lead to low bandgaps (down to 1.22 eV) as well as strong and broad NIR absorption bands (up to 1000 nm).
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