中文摘要：

采用分步组装的方法，将正己酰氯、正癸酰氯、正十四碳酰氯和硬脂酰氯按不同比例混合，接枝到3-（三甲氧基硅烷基）丙基乙烯基二胺（DA）氨基自组装膜表面，制备出一系列不同链长二元混合自组装薄膜：通过调节溶液中二元组分的相对比例，得到一系列不同厚度和不同表面润湿性的纳米有机薄膜：对薄膜进行了接触角测量、椭圆偏光测厚以及原子力形貌分析，并用摩擦力显微镜考察了其摩擦学性能．没有发现相分离现象，而且研究发现，随着长碳链分子所占比例的增大，薄膜的致密度增加，表面疏水性能增强，微观摩擦系数也随之减小．

英文摘要：

A series of dually mixed self-assembled monolayers were prepared by a simple step-by-step method. Four carbonyl chlorides with different chain lengths were selected and assembled onto a N-[3- （trimethoxylsilyl）propyl] ethylene diamine self-assembled monolayer. Different mixed films were obtained by controlling the ratio of co-deposited carbonyl chlorides. The structures of the films were characterized by measuring their contact angles, ellipsometric thickness, and atomic force microscopy. No phase separation was observed in the mixed films. Micro-tribological studies were also carried out on the films. It was found that frictional coefficients decreased as the ratio of the longer component was increased.