花生酸-钌有机螯合物Ru(phen)_3^(2+)的单分子膜和LB膜中分子聚集行为的研究  

Study of the Molecular Aggregation in Arachidic AcidRu(phen)_3 ^(2+) Monolayer and LB Films

作　　者：方堃[1] 邹纲[1] 吕卫星[1] 何平笙[1] 

机构地区：[1]中国科学技术大学高分子科学与工程系,合肥230026

出　　处：《化学学报》2002年第7期1220-1224,共5页Acta Chimica Sinica

基　　金：国家自然科学基金 (No .2 99740 2 8)资助项目

摘　　要：以功能性的钌有机螯合物Ru(phen) 2 + 3 作为亚相离子 ,花生酸在亚相表面上形成稳定的单分子膜 .π A等温线和动态弹性测量表明 ,此膜因花生酸与钌螯离子发生了静电相互作用而有更大的可压缩性 ,并在固态区发生了分子聚集 .用垂直法成功地制备了嵌有Ru(phen) 2 + 3 离子的超薄有序Y 型LB膜 .光谱实验表明 ,所得LB膜是稳定、均匀的层状三明治结构 ,在层面内Ru(phen) 2 + 3 与花生酸结合成相对稳定的分子基团并形成了JStable Langmuir monolayer of arachidic acid (AA) was formed on a subphase of tris(1,10-phenanthroline) ruthenium(II) aqueous solution. π-A isotherm and dynamic elasticity measurements indicated that the monolayer was more condensable than that on pure water due to the electrostatic interaction between AA and Ru(II) ions and would aggregate in solid-like state. Y-type AA LB films containing the photofunctional ions, Ru(II) were deposited successfully and characterized by UV-visible and low angle X-ray diffraction spectra respectively. It was proved that the obtained AA-Ru(II) LB films were stable, homogeneous and sandwich-like multilayers, in which the relatively stable AA-Ru(II) groups aggregated to form J-aggregate in each layer.

关 键 词：花生酸 单分子膜 分子聚集行为 钌有机螯合物 LB膜 J-聚体 动态弹性 结构 

分 类 号：O641[理学—物理化学]