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Proceedings Paper

Synthesis of substituted thiophene-benzobisthiazole oligomers for molecular weight: third-order NLO property correlations
Author(s): Marilyn R. Unroe; Bruce A. Reinhardt
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Paper Abstract

In an effort to better understand the relationship between molecular weight and third-order nonlinear optical activity for condensation polymers, a series of oligomeric thiophene containing benzobisthiazoles were synthesized via a trimethylsilylpolyphosphate catalysed condensation of a bis-o-aminothiophenol monomer and a didecyloxythiophene dicarboxylic acid. The physical and chemical characterization of these oligomers, including molecular weight determinations, are summarized. The enhancement of the bulk susceptibility and second molecular hyperpolarizability are demonstrated to increase with increasing oligomer length. Based on the data from femtosecond degenerate four-wave mixing experiments the second hyperpolarizability of the oligomers is enhanced by two-photon resonance.

Paper Details

Date Published: 1 April 1992
PDF: 10 pages
Proc. SPIE 1626, Nonlinear Optics III, (1 April 1992); doi: 10.1117/12.58119
Show Author Affiliations
Marilyn R. Unroe, Wright Lab. (United States)
Bruce A. Reinhardt, Wright Lab. (United States)

Published in SPIE Proceedings Vol. 1626:
Nonlinear Optics III
Robert A. Fisher; John F. Reintjes, Editor(s)

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