聚苯乙烯芪盐L-B膜的二阶非线性光学性质研究  

Study on the second-order nonlinear optical property of stilbazium salt polystyrene in Langmuir-Blodgett films

作　　者：刘丽英[1] 郑家骠[1] 王文澄[1] 章志呜 方屹[2] 陶凤岗[2] 许临晓[2] 

机构地区：[1]复旦大学物理系,上海200433 [2]复旦大学化学系,上海200433

出　　处：《光学学报》1993年第4期319-323,共5页Acta Optica Sinica

基　　金：国家自然科学基金的部分资助

摘　　要：首次合成了一种称之为聚苯乙烯芪盐的有机高分子材料.此材料可以在水面上形成稳定的单分子层膜,并且所形成的单分子层膜可以转移到固体衬底上去.对聚苯乙烯芪盐单分子层膜进行光学二次谐波产生测量,得到聚苯乙烯芪盐对应于每个发色团的二阶非线性极化率为1.2×10^(-28)esu.制备了该材料两种不同类型的多层膜,讨论了多层膜二次谐波产生信号不随层数增加而增加的可能原因.A stilbazium salt polystyrene was synthesized as a pre-polymerized organic material for Langmuir-Blodgett (L-B) film fabrication and nonlinear optical property study. This material can form stable monolayer on a water surface to be transferred onto solid substrates. Second harmonic generation (SHG) studies on monolayer showed that the second order polarizability per chromophoric group of this material was 1. 2× 10-28esu. Multilayers of two different types of this material have also been fabricated and studied by SHG measurement. The results are discussed.

关 键 词：聚合物 LB膜 二次谐波散射 

分 类 号：O484.41[理学—固体物理]