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Chem Commun (Camb). 2013 Aug 21;49(65):7192-4. doi: 10.1039/c3cc43229g. Epub 2013 Jun 14.

Regioregular pyridyl[2,1,3]thiadiazole-co-indacenodithiophene conjugated polymers.

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1
Center for Polymers and Organic Solids, Department of Chemistry and Biochemistry and Materials, University of California, Santa Barbara, California 93106-7150, USA.

Abstract

Regioregular conjugated polymers containing alternating pyridyl[2,1,3]thiadiazole (PT) and indacenodithiophene (IDT) structural units were synthesized. In these copolymers, the pyridyl nitrogen atoms on PT are precisely arranged along the backbone so that each one has an adjacent proximal and an adjacent distal counterpart across the two IDT flanking units. We find that despite the absence of obvious differences in orbital energy levels and optical bandgap, the regioregular materials exhibit larger charge carrier mobilities, as determined by using field effect transistor devices, and can yield higher solar cell power conversion efficiencies when mixed with fullerenes in bulk heterojunction active layers.

PMID:
23765194
DOI:
10.1039/c3cc43229g
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