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Bipolaron Formation and Nonlinear Optical Properties in Bis-Thienyl Polyenes

Published online by Cambridge University Press:  16 February 2011

C. W. Spangler ,
M. Q. He ,
J. Laquindanum ,
L. Dalton ,
N. Tang ,
J. Partanen  and
R. Hellwarth
C. W. Spangler
Affiliation:
Department of Chemistry, Northern Illinois University, DeKalb, IL 60115
M. Q. He
Affiliation:
Department of Chemistry, Northern Illinois University, DeKalb, IL 60115
J. Laquindanum
Affiliation:
Department of Chemistry, University of Southern California, Los Angeles, CA 90089
L. Dalton
Affiliation:
Department of Chemistry, University of Southern California, Los Angeles, CA 90089
N. Tang
Affiliation:
Department of Physics, University of Southern California, Los Angeles, CA 90089
J. Partanen
Affiliation:
Department of Physics, University of Southern California, Los Angeles, CA 90089
R. Hellwarth
Affiliation:
Department of Physics, University of Southern California, Los Angeles, CA 90089
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Abstract

Bipolaron-like dications have been produced in both diphenyl and bis-thienyl polyenes by oxidative doping in solution. However, until now spectroscopie studies of the charge state generation beyond the hexaene have been precluded due to lack of solubility and processibility. We have now been able to extend these studies to the decaene by incorporating solubilizing substituents on the thienyl end caps. For the neutral species, degenerate four wave Mixing (DFWM) studies indicate that χ(3) is still increasing as a function of conjugation length. Introduction of mesomerically interactive RS groups on the thiophene rings further increases both solubility and optical nonlinearity.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 328: Symposium Q – Electrical, Optical, and Magnetic Properties of Organic Solid State Materials , 1993 , 655
Copyright
Copyright © Materials Research Society 1994

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References

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