Thin film processing of NLO materials. VII a new approach to design of cross-linked second-order nonlinear optical polymers

A new class of cross-linked second-order nonlinear optical (NLO) polymers has been developed by processing a NLO-dye and a polymer similar to conventional ‘doped polymer’ system. Intermolecular cross-linking was carried out by UV radiation subsequent to electric field induced poling of the composite...

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Bibliographic Details
Published in:Synthetic metals 1991-06, Vol.43 (1), p.3143-3150
Main Authors: Mandal, Braja K, Lee, Jun Y, Zhu, Xiao F, Chen, Yong M, Prakeenavincha, Ekachai, Kumar, Jayant, Tripathy, Sukant K
Format: Article
Language:English
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Summary:A new class of cross-linked second-order nonlinear optical (NLO) polymers has been developed by processing a NLO-dye and a polymer similar to conventional ‘doped polymer’ system. Intermolecular cross-linking was carried out by UV radiation subsequent to electric field induced poling of the composite. Cinnamate (C 6H 5 − CH = CH − CO 2 − ) and styrylacrylate (C 6H 5 − CH = CH − CH = CH − CO 2 − moieties are selected as the photoreactive chromophores which are attached to both the NLO molecules at two positions and randomly substituted to a vinyl polymer. The poled cross-linked polymers exhibit stable nonlinear activity over a long period of time as characterized by temporal response of second-harmonic generation signal and UV absorption characteristics.
ISSN:0379-6779
1879-3290
DOI:10.1016/0379-6779(91)91252-6