Preparation and Characterization of Hybrid Films with a TCF Acceptor-based Chromophore for Nonlinear Optical Applications  

作　　者：金学峰 钱国栋 

机构地区：[1]Department of Materials Science and Engineering,State Key Lab of Silicon Materials,Zhejiang University

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2007年第B12期794-798,共5页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Natural Science Foundation of China (Nos.50532030 and 50625206) and PCSIRT

摘　　要：A tricyanofuran （TCF） acceptor-based nonlinear optical （NLO） chromophore （2-（3-cyano-4-（4-（（2- hydroxyethyl）（methyl）amino）styryl）-5,5-dimethylfuran-2（5H）-ylidene）malononitrile abbr. FS） was synthesized and then reacted with 3-isocyannatopropyl triethoxysilane （ICTES） to form a functionalized silicon alkoxide precursor （named ICTES-FS）. Sol solutions were obtained after co-hydrolysis/condensation of ICTES-FS, tetraethoxysilane （TEOS） and 3-（Trimethoxysilyl）propyl methacrylate （TSPM）. Transparent films were only fabricated with the sol containing high concentration of TSPM. Higher concentration of TSPM was found useful to abate dipolar chromophore interactions and consequent aggregation problems. Second- order NLO properties and temporal stability of sol-gel films were also investigated by virtue of in situ second harmonic generation （SHG）.A tricyanofuran （TCF） acceptor-based nonlinear optical （NLO） chromophore （2-（3-cyano-4-（4-（（2- hydroxyethyl）（methyl）amino）styryl）-5,5-dimethylfuran-2（5H）-ylidene）malononitrile abbr. FS） was synthesized and then reacted with 3-isocyannatopropyl triethoxysilane （ICTES） to form a functionalized silicon alkoxide precursor （named ICTES-FS）. Sol solutions were obtained after co-hydrolysis/condensation of ICTES-FS, tetraethoxysilane （TEOS） and 3-（Trimethoxysilyl）propyl methacrylate （TSPM）. Transparent films were only fabricated with the sol containing high concentration of TSPM. Higher concentration of TSPM was found useful to abate dipolar chromophore interactions and consequent aggregation problems. Second- order NLO properties and temporal stability of sol-gel films were also investigated by virtue of in situ second harmonic generation （SHG）.

关 键 词：nonlinear optics poled polymer SOL-GEL second harmonic generation 

分 类 号：TB383.2[一般工业技术—材料科学与工程]