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Third – Order Nonlinear Optical Properties of Polysilane Films

Published online by Cambridge University Press:  21 February 2011

P.G. Kaatz ,
G.D. Patterson ,
H.K. Kim ,
H. Frey  and
K. Matyjaszewski
P.G. Kaatz
Affiliation:
Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213
G.D. Patterson
Affiliation:
Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213
H.K. Kim
Affiliation:
Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213
H. Frey
Affiliation:
Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213
K. Matyjaszewski
Affiliation:
Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213
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Abstract

Results are presented from third harmonic generation, (THG), experiments on a number of polysilane films. The polymers studied include poly(di-n-hexylsilylene) PDHS, and copoly(di-n-hexyl, hexylmethylsilylene) PDHS / PHMS. These polymers exhibit positive thermochromism, where the transition temperature and spectral properties are dependent on the copolymer ratio. The nonlinear susceptibility, , in the low temperature phase of the polymer increases by approximately 4 − 5 times that of the high temperature phase where the absorption maximum decreases by ∼ 60 nm. The polymers are prepared as neat, solid films on fused silica substrates. Thickness and refractive index measurements of these polymers were made by UV-VIS-NIR spectroscopy.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 214: Symposium R1 – Optical and Electrical Properties of Polymers , 1990 , 17
Copyright
Copyright © Materials Research Society 1991

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References

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