Copolymerization effects upon the second-order NLO responses of polyacetylene/polymethineimine

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Abstract

We have determined the ideal composition of sequenced polyacetylene/polymethineimine copolymers for application as second-order materials. As a result of the interplay between delocalization and asymmetry, there exists for second-order nonlinear optics effects an optimal polyacetylene/polymethineimine composition which is estimated to be between 50% to 66% of polyacetylene. However, the addition of any proportion of polyacetylene between 25% and 75% into polymethineimine already leads to a large increase of the electronic first hyperpolarizability, highlighting the interest of creating such copolymers.

Original languageEnglish
Pages (from-to)3980-3985
Number of pages6
JournalMacromolecules
Volume36
Issue number11
DOIs
Publication statusPublished - 3 Jun 2003

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