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Importance of C(2) symmetry for the device performance of a newly synthesized family of fused-ring thiophenes.

ABSTRACT: We investigated the relationship between molecular structure and field-effect hole mobility in a family of fused-ring polythiophene copolymers that we designed recently. The results suggest that a repeat unit that possesses a C(2) axis perpendicular to the conjugation plane is important to achieve a high-mobility. Our finding is supported by a review of literature data: Many polymer semiconductors showing a hole or electron mobility >0.1 cm(2)/V.s feature a repeat unit with C(2) symmetry; however exceptions have been found from some push - pull polymer structures.

SUBMITTER: He M

PROVIDER: S-EPMC2879658 | biostudies-literature | 2010 Mar

REPOSITORIES: biostudies-literature

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Importance of C(2) symmetry for the device performance of a newly synthesized family of fused-ring thiophenes.

He Mingqian M Li Jianfeng J Tandia Adama A Sorensen Michael M Zhang Feixia F Fong Hon Hang HH Pozdin Vladimir A VA Smilgies Detlef-M DM Malliaras George G GG

Chemistry of materials : a publication of the American Chemical Society 20100301 9

We investigated the relationship between molecular structure and field-effect hole mobility in a family of fused-ring polythiophene copolymers that we designed recently. The results suggest that a repeat unit that possesses a C(2) axis perpendicular to the conjugation plane is important to achieve a high-mobility. Our finding is supported by a review of literature data: Many polymer semiconductors showing a hole or electron mobility >0.1 cm(2)/V.s feature a repeat unit with C(2) symmetry; howeve ...[more]

PMID: 20526456

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