论文部分内容阅读
把芪盐与二十酸以不同的比例混合，制备单层ＬＢ膜，研究了材料的分子二阶非线性光学极化率。在芪盐含量为５０％～７０％之间得到了极大增强的二次谐波信号。经分析认为在ＬＢ膜上除芪盐以两种聚集体的形式出现外，芪盐与二十酸分子之间还存在相互作用，它阻止了芪盐分子产生聚集的趋势，使芪盐聚集体多以聚集体１的形式出现。芪盐聚集体１的吸收可使四阶非线性极化率χ（４）产生共振增强，从而引起混合材料单层ＬＢ膜对二次谐波信号产生影响。
The stilbene salt was mixed with icosanoic acid at different ratios to prepare single-layer LB films, and the second-order nonlinear optical polarizabilities of the materials were studied. In the salt content of 50% to 70% between the greatly enhanced second harmonic signal. The analysis shows that in addition to the LB film in addition to the formation of two kinds of salt in the form of stilbene salt, there are still interactions between the stilbene and arachidic acid molecules, which prevent the stilbene salt molecules aggregation, the stilbene salt aggregates Mostly in the form of aggregates 1. The absorption of the stilbazol aggregates 1 can enhance the resonance of the fourth-order nonlinear polarizability χ (4), which leads to the influence of the monolayer LB film of mixed materials on the second harmonic signal.