Photoluminescence studies of the light-emitting species in new materials for polymer devices

Gary Rumbles, P. F. Miller, M. M. DeSouza, I. R. Gould, H. Amer, D. L. Russell, A. B. Holmes, S. C. Moratti, I. D W Samuel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The photophysics of a soluble, cyano-substituted poly (p-phenylene vinylene) and some related model compounds are compared using steady-state and time-resolved photoluminescence spectroscopy. The nature of the excited states in the model compounds are shown to differ markedly from the polymer as steric hindrance between the cyano group and an alkoxy group disrupts electron delocalization resulting in a twist in the molecular structure. In solution the polymer exhibits emission from both isolated chains, and from aggregates formed when the solution is allowed to equilibrate over a long period of time. The aggregate has its own distinct absorption and emission features and is assigned to a dimer-like species. When spun from the same solvent, thin films of the polymer exhibit the same emission features as the solution aggregates.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSociety of Photo-Optical Instrumentation Engineers
Pages101-108
Number of pages8
Volume3797
Publication statusPublished - 1999
EventProceedings of the 1999 Organic Light-Emitting Materials and Devices III - Denver, CO, USA
Duration: Jul 19 1999Jul 21 1999

Other

OtherProceedings of the 1999 Organic Light-Emitting Materials and Devices III
CityDenver, CO, USA
Period7/19/997/21/99

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

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    Rumbles, G., Miller, P. F., DeSouza, M. M., Gould, I. R., Amer, H., Russell, D. L., Holmes, A. B., Moratti, S. C., & Samuel, I. D. W. (1999). Photoluminescence studies of the light-emitting species in new materials for polymer devices. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 3797, pp. 101-108). Society of Photo-Optical Instrumentation Engineers.