Y型Langmuir-Blodgett膜中分子聚集行为的偶极作用模型  

The dipole interaction model of the molecular aggregation in Y-type Langmuir-Blodgett film

作　　者：白磊[1] 韩奎[1] 唐刚[1] 李海鹏[1] 王洪涛[1] 黄志敏[1] 张兆慧[1] 

机构地区：[1]中国矿业大学理学院,徐州221008

出　　处：《物理学报》2007年第11期6565-6571,共7页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10674177);中国矿业大学科技基金(批准号:0K061064)资助的课题.~~

摘　　要：利用经典静电场理论,描述了Y型Langmuir-Blodgett(LB)膜中棒状分子聚集行为的偶极作用模型,给出了Y型LB膜结构与光谱性质的关系.讨论了Y型膜中分子间距、层间距、分子取向、膜层数等结构参数对分子聚集行为的影响,并在此基础上比较了Y型膜和Z型膜分子聚集行为的异同.理论结果与实验规律符合较好.　Based on the classical electrostatic theory,the model of dipole-dipole interaction of rod-like amphiphilic molecules in Y-type Langmuir-Blodgett（LB）film is presented in the paper.The relations between the structure and spectral absorption peak of LB films were obtained by using this model.For Y-type films,the relationship of molecular aggregation state and the structure parameters,i.e.molecular separation distance a,separation d between two adjacent layers,molecular tilt angle θ,and layer number g,were studied using our model.Then we compared the similarities and differences of aggregation behavior between Y-type and Z-type films.The theoretical results agree well with experimental data.

关 键 词：Y型Langmuir-Blodgett膜 聚集体 偶极相互作用 吸收光谱 

分 类 号：O484[理学—固体物理]