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Proceedings Paper

Localization of excitations in silicon chains by electron donating side groups
Author(s): David Alastair M Smith; Scott Williams; P. Jenkner; Robert D. Miller; E. J. Ginsburg; Robin M. Hochstrasser
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Paper Abstract

The fluorescence decay kinetics in the copolymer, poly(phenylmethyl-co-p- dimethylanilinemethyl silane) have been studied by steady state and time correlated fluorescence spectroscopy and three absorbing and emitting species are proposed to explain the complex fluorescence decay behavior. In the case of poly(phenyl methyl silane) homopolymer, excitations have been shown to delocalize over several tens of monomer units, however, in the copolymers discussed here the extent of the delocalization has been shown to be dependent on the degree of substitution of the dimethylaniline side group. In the more highly substituted copolymers the excitations are shown to be confined to almost a single monomer unit by the electron donating nature of the dimethylaniline side group. A simple geometric distribution of chain lengths is used to predict the delocalization length of the excitations.

Paper Details

Date Published: 20 January 1994
PDF: 8 pages
Proc. SPIE 2042, Photopolymers and Applications in Holography, Optical Data Storage, Optical Sensors, and Interconnects, (20 January 1994); doi: 10.1117/12.166345
Show Author Affiliations
David Alastair M Smith, Univ. of Pennsylvania (United States)
Scott Williams, Univ. of Pennsylvania (United States)
P. Jenkner, IBM Almaden Research Ctr. (United States)
Robert D. Miller, IBM Almaden Research Ctr. (United States)
E. J. Ginsburg, IBM Almaden Research Ctr. (United States)
Robin M. Hochstrasser, Univ. of Pennsylvania (United States)


Published in SPIE Proceedings Vol. 2042:
Photopolymers and Applications in Holography, Optical Data Storage, Optical Sensors, and Interconnects
Roger A. Lessard, Editor(s)

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