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Photocrosslinked polymer and interpenetrating polymer network for nonlinear optics

โœ Scribed by Lingzhi Zhang; Zhigang Cai; Qingshui Yu; Zhaoxi Liang

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
175 KB
Volume
71
Category
Article
ISSN
0021-8995

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โœฆ Synopsis

Two photocrosslinkable NLO polymers of poly(glycidyl methacrylate) substituted with 4-nitro-4ะˆ-hydroxyl stilbene (PGMAS) and acryloyl-functionalized epoxybased polymer (PENAA) carrying 4-nitroaniline moieties were synthesized and characterized. By using the sulfonium salt cationic photoinitiator BDS โ… 2PF 6 which can induce cationic or/and radical polymerization, the photocrosslinking of PGMAS and the interpenetrating polymer network (IPN) formed by the photocrosslinking of PGMAS and PENAA simultaneously were reported. The poled and photocrosslinked polymer films and IPN films exhibit relatively stable second-order nonlinear optical activity. The influence of stilbene isomerization in PGMAS films with different crosslink densities on the SHG stability was also investigated.

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