中文摘要：

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.

英文摘要：

　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.