1. New Approaches to the Synthesis of Ladder Polymers: Copolymers of Aniline and Thiophene
- Author
-
David J. Vachon, David W. Polis, and Larry R. Dalton
- Subjects
chemistry.chemical_classification ,Ullmann condensation ,Materials science ,Composite number ,Polymer ,chemistry.chemical_compound ,Aniline ,chemistry ,Laser damage ,Optical materials ,Copolymer ,Thiophene ,Physical chemistry ,Organic chemistry - Abstract
We would like to report the synthesis of new third order nonlinear optical materials formed from reaction of dibromothiophenes with p-phenylenediamines under Ullmann condensation conditions. Initial measurements of the third harmonic NLO susceptibilities (X3~= 4 × 10−10 esu ), high laser damage thresholds ( 4 GW/cm2 ), and low absorptions have provided promising materials for device applications. Composite films in poly(vinylalcohol), poly(methylmethacrylate). or poly(carbonate) also gave significant X3 values in less than 10 percent w/w concentrations.
- Published
- 1988
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