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Absorption and Luminescence Properties of Sequentially Random- and Defined Copolymers Based on Poly(fluorene-benzothiadiazole)

Published online by Cambridge University Press:  15 February 2011

Petra Herguth ,
Joo Hyun Kim ,
Xuezhong Jiang ,
Michelle S. Liu  and
Alex K-Y. Jen
Petra Herguth
Affiliation:
Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195-2120, U.S.A.
Joo Hyun Kim
Affiliation:
Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195-2120, U.S.A.
Xuezhong Jiang
Affiliation:
Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195-2120, U.S.A.
Michelle S. Liu
Affiliation:
Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195-2120, U.S.A.
Alex K-Y. Jen
Affiliation:
Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195-2120, U.S.A.
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Abstract

The emission wavelength in conjugated copolymers is determined by the various monomers used, their sequence in the polymer backbone, the effective conjugation length of the material, and intra- and intermolecular interactions of the different units. This paper will discuss the influence of conjugation length as well as the influence of intramolecular charge-transfer on the absorption and emission properties. Fluorene, benzothiadiazole and a third comonomer (fluorene, xylene or triphenylamine) were used as building blocks. The influence of monomer sequence is probed as well by comparing sequentially random copolymers to their sequentially defined ones with identical monomer ratios. Model oligomers were also made for comparison.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 771: Symposium L – Organic and Polymeric Materials and Devices , 2003 , L10.31
Copyright
Copyright © Materials Research Society 2003

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