兼具非线性光学和热释电性能的有机-无机杂化薄膜

用溶胶 -凝胶法和原位加热极化聚合法制备了以 4-[N,N-二 -(二羟乙基 )氨基苯基 ]-2 ,4-二 -( 4 ,4 -二硝基苯基 )咪唑 ( 4 HAPN)为生色团 ,以 Ta( )的金属醇盐为无机前驱体的有机 -无机杂化聚合物材料 .用二次谐波产生技术和数字电荷积分法测得极化薄膜的二阶非线性光学系数 d3 3 为 1 7.2 pm/V,平均热释电系数为 4.3× 1 0 -6C/( cm2 · K) .

溶胶-凝胶法制备无机基质/有机杂化光学材料及其光学性能研究

探索一种制备无机基质/有机杂化光功能材料的途径,采用溶胶-凝胶法在无机基质溶胶中分别掺杂自制的5种有机发光材料,制备出透明、均匀的有机-无机杂化发光薄膜,研究其发光行为,探讨发光行为的规律。

Polarized Electronic Spectra of Organic/Inorganic Hybrid Materials of Chiral Schiff Base Ni（ll） or Cu（ll） Complexes and Disperse Red 1 or Azobenzene in PMMA Films

We have prepared new chiral Schiff base complexes, and copper（Ⅱ） （2） to investigate steric effect of ligands for 1 and bis（N-R-l-phenylethyl-5- methoxysalicydenaminato） nickel（Ⅱ） （1） 2 and known bis（N-R-l-phenylethyl-3,5-dichlorosalicydenaminato） nickel（Ⅱ） （3） and copper（Ⅱ） （4）. By using two kinds of photochromic dyes, disperse red 1 （DRI） and azobenzene （AZ）, we investigated the efficiency of increasing optical anisotropy of organic/inorganic hybrid materials of 1 through 4＋AZ or DRI＋PMMA in polymethylmethacrylate （PMMA） cast films by Weigert effect （and compared with cis-trans isomerization by alternate UV and visible light for 3 and 4 to previous study）. Gradual increase of optical anisotropy was observed for all the hybrid materials regardless of flexibility of Schiff base complexes, and the degree of dichroism and weak intermolecular interactions were discussed based on polarized absorption electronic spectra.