Bispyridinium-phenylene-based copolymers: low band gap n-type alternating copolymers
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Swager_SI and Bispy.pdf
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Author(s)
Swager, Timothy Manning
Izuhara, Daisuke
Date Issued
January 2011
Journal
Journal of Materials Chemistry
Publisher
Royal Society of Chemistry
Citation
Izuhara, Daisuke, and Timothy M. Swager. “Bispyridinium-phenylene-based Copolymers: Low Band Gap N-type Alternating Copolymers.” Journal of Materials Chemistry 21.11 (2011): 3579.
Version
Author's final manuscript
Abstract
Bispyridinium-phenylene-based conjugated donor–acceptor copolymers were synthesized by a Stille cross-coupling and cyclization sequence. These polyelectrolytes are freely soluble in organic solvents and display broad optical absorption bands that extend into the near-infrared region. They show ambipolar redox properties with high electron affinities (LUMO levels) of 3.9–4.0 eV as well as high degrees of electroactivity. When reduced (n-doped) these materials display in situ conductivities as high as 180 S/cm. The high conductivity is attributed to the planar structure that is enforced by the cyclic structures of the polymer. The electron affinities are compared to PCBM, a C[subscript 60] based n-type material and hence may find utility in photovoltaic devices.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
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Creative Commons Attribution-Noncommercial-Share Alike 3.0
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DOI of Published Version
https://doi.org/10.1039/c0jm02530e
