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Effects of Molecular Rigidity on Electric Field Induced Alignment and Orientational Stability of Dipolar Chromophore Composites

Published online by Cambridge University Press:  25 February 2011

H. E. Katz
Affiliation:
AT&T Bell Laboratories 1D-250, 600 Mountain Avenue, Murray Hill, NJ 07974 and Princeton, NJ 08540
M. L. Schilling
Affiliation:
AT&T Bell Laboratories 1D-250, 600 Mountain Avenue, Murray Hill, NJ 07974 and Princeton, NJ 08540
G. Washington
Affiliation:
AT&T Bell Laboratories 1D-250, 600 Mountain Avenue, Murray Hill, NJ 07974 and Princeton, NJ 08540
C. W. Dirk
Affiliation:
AT&T Bell Laboratories 1D-250, 600 Mountain Avenue, Murray Hill, NJ 07974 and Princeton, NJ 08540
W. R. Holland
Affiliation:
AT&T Bell Laboratories 1D-250, 600 Mountain Avenue, Murray Hill, NJ 07974 and Princeton, NJ 08540
T. Fang
Affiliation:
AT&T Bell Laboratories 1D-250, 600 Mountain Avenue, Murray Hill, NJ 07974 and Princeton, NJ 08540
K. D. Singer
Affiliation:
AT&T Bell Laboratories 1D-250, 600 Mountain Avenue, Murray Hill, NJ 07974 and Princeton, NJ 08540
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Abstract

The relationship between the supramolecular conformational structure of assembled chromophores and their susceptibility to electric field poling is of interest for maximizing the bulk alignment achievable in an electro-optic material. We have employed solution phase dielectric constant measurements to investigate possible enhancements in dipolar susceptibility as a function of connectivity and state of aggregation in rationally synthesized chromophore assemblies, including conformationally defined head-to-tail oligomers. On the other hand, conformationally unrestricted, highly dipolar azo dyes behave as relatively isolated molecules even when present in supersaturated solutions and in close proximity on polymer chains.

Type
Research Article
Copyright
Copyright © Materials Research Society 1990

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References

REFERENCES

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