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Studies of Orientational Order in Monolayers of Nonlinear Optical Dye Molecules

Published online by Cambridge University Press:  25 February 2011

J. D. Legrange
Affiliation:
AT&T Engineering Research Center, P.O.Box 900, Princeton, New Jersey 08540
L. A. King
Affiliation:
AT&T Engineering Research Center, P.O.Box 900, Princeton, New Jersey 08540
M. G. Kuzyk
Affiliation:
AT&T Engineering Research Center, P.O.Box 900, Princeton, New Jersey 08540
K. D. Singer
Affiliation:
AT&T Engineering Research Center, P.O.Box 900, Princeton, New Jersey 08540
H. E. Katz
Affiliation:
AT&T Engineering Research Center, P.O.Box 900, Princeton, New Jersey 08540
M. L. Schilling
Affiliation:
AT&T Bell Laboratories, 600 Mountain Avenue, Murray Hill, New Jersey 07974
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Abstract

We present results of studies of orientational order of Langmuir-Blodgett monolayer and multilayer films based on second harmonic generation and linear absorption measurements. Two new compounds, a tricyanovinyl aniline and a tricyanovinyl azo dye, both possessing large second order molecular susceptibilities have been synthesized and transferred as monolayers from the air-water interface to solid substrates using the Langmuir-Blodgett technique. The azo dye is a superior Langmuir-Blodgett material, forming films which are chemically and structurally stable. Multilayers of this compound show an enhancement in polar orientational order with thickness, as observed in the dependence of the second harmonic polarization components on number of layers.

Type
Research Article
Copyright
Copyright © Materials Research Society 1988

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References

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