Photoinduced Destruction of Polar Structure in Dye-Pendant Polymers Studied by Second-Harmonic Generation
- 1 January 1996
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 35 (1R) , 168-174
- https://doi.org/10.1143/jjap.35.168
Abstract
Second-harmonic generation (SHG) was observed in polymer/azo dye systems during light irradiation. The SHG activity produced by poling was completely lost by partial trans-cis isomerization in dye-pendant systems, while this phenomenon was observed less in a dye-dispersed system. Taking account of the observations in various polymer matrices, we concluded that the destructive process of the poled structure is amplified through a movement of the polymer main chain induced by the partial photoisomerization of chromophores.Keywords
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