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Nonlinear Optical Studies of Mixed π-Conjugated Polymer Multilayers by Second Harmonic Generation

Published online by Cambridge University Press:  25 February 2011

H. Koezuka ,
T. Kurata ,
A. Tsumura  and
H. Fuchigami
H. Koezuka
Affiliation:
Mitsubishi Electric Corporation, Materials & Electronic Devices Laboratory, 1–1 Tsukaguchi Honmachi 8-Chome, Amagasaki, Hyogo 661, Japan
T. Kurata
Affiliation:
Mitsubishi Electric Corporation, Materials & Electronic Devices Laboratory, 1–1 Tsukaguchi Honmachi 8-Chome, Amagasaki, Hyogo 661, Japan
A. Tsumura
Affiliation:
Mitsubishi Electric Corporation, Materials & Electronic Devices Laboratory, 1–1 Tsukaguchi Honmachi 8-Chome, Amagasaki, Hyogo 661, Japan
H. Fuchigami
Affiliation:
Mitsubishi Electric Corporation, Materials & Electronic Devices Laboratory, 1–1 Tsukaguchi Honmachi 8-Chome, Amagasaki, Hyogo 661, Japan
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Abstract

The structures of the mixed LB monolayers, composed of two different kinds of π-conjugated system, poly(3-hexylthiophene) (PHT) and pentacosa-10, 12-diynoic acid (DA), have been investigated mainly by a second harmonic generation (SHG) Maker fringe method. The mixed LB films partly contain a double-layered structure consisting of PHT and DA. The second harmonic radiation has been produced from slightly twisted PHT in the double layer. Both UV-polymerization of DA and successive heat-treatments enhanced the SHG intensities. The enhancement of the SHG intensities has been elucidated by the enlargement of the PHT twisting and the interaction between PHT and a newly formed π-conjugated system.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 173: Symposium Q – Advanced Organic Solid State Materials , 1989 , 691
Copyright
Copyright © Materials Research Society 1990

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References

REFERENCES

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