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Preliminary study on alternating thienylene/phenylene copolymers functionalized with an electron-donating or -withdrawing group

Published online by Cambridge University Press:  31 January 2011

J. M. Xu ,
S. C. Ng  and
H. S. O. Chan
J. M. Xu*
Affiliation:
Department of Chemistry, National University of Singapore, Kent Ridge, Singapore 119260
S. C. Ng
Affiliation:
Department of Chemistry, National University of Singapore, Kent Ridge, Singapore 119260
H. S. O. Chan
Affiliation:
Department of Chemistry, National University of Singapore, Kent Ridge, Singapore 119260
*
a)Address all correspondence to this author. e-mial: [email protected]
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Abstract

Three novel regioregular polymers substituted with electron-donating or -withdrawing groups, poly[1,4-bis(3-X-2,5-thienylene)phenylene-alt-2,5-dioctyl-1,4-phenylene] [PBT(X), X = OMe, H, CN], were synthesized and characterized. They are highly fluorescent, but the absorption wavelength of PBT(CN) and PBT(OMe) are shifted toward the blue and red regions, respectively, with reference to PBT(H). The onset reduction potential of PBT(CN) is –1.11 V versus SCE (saturated calomel electrode), which is higher than that of the cyano derivative of poly(phenylene vinylene), indicating it be a good candidate as electron transport layer. The onset oxidation and reduction potentials of PBT(OMe) (0.96 and –1.28 V versus SCE respectively) suggest it would perform well as emissive layer in light-emitting display applications.

Type
Rapid Communications
Information
Journal of Materials Research , Volume 16 , Issue 5 , May 2001 , pp. 1235 - 1237
Copyright
Copyright © Materials Research Society 2001

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References

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