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研究了4-N（2’-巯基-乙基）羧基酰胺偶氮苯（Azo）与β-环糊精（β-CD）形成的包合物在金表面上的自组装行为．X射线光电子能谱（XPS）结果证实，Azo和Azo与β-CD形成的包合物均可在金表面上自组装形成单分子层膜．在包合物形成的自组装膜中，Azo与β-CD的摩尔比约为1：1．Azo自组装膜的电化学反应表现速率常数（Kobs）随组装时间的延长而明显减小，反映出自组装膜的排列随时间延长而趋于更加致密，从而抑制了偶氮苯基团的电化学诱导构型转化，降低了其电活性．而Azo与β-CD包合物自组装膜的Kobs值随组装时间变化不大，在组装76h以后，包合物自组装膜的Kobs比单纯偶氮苯自组装膜的Kobs高2个数量级以上．表明环糊精能够将偶氮苯分子隔开，从而抑制了偶氮苯在自组装膜中的聚集作用，有效地提高其电化学活性．
The self-assembly behavior of the inclusion complex of 4-N (2’-mercapto-ethyl) carboxamide azobenzene (Azo) with β-cyclodextrin (β-CD) on the gold surface was investigated. The results of X-ray photoelectron spectroscopy (XPS) confirmed that the inclusion complexes of Azo and Azo with β-CD could self-assemble on the Au surface to form monolayers. In the self-assembled films of inclusion complexes, the molar ratio of Azo to β-CD is about 1: 1. The electrochemical reaction rate constants (Kobs) of Azo self-assembled monolayers decrease with the increase of assembly time, which indicates that the arrangement of self-assembled monolayers tends to be denser with time and thus inhibits the electrochemistry of azobenzene groups Inducing conformational transformation, reducing its electrical activity. However, the Kobs values of Azo and β-CD inclusion self-assembled films did not change much with assembly time. After 76 hours assembly, Kobs inclusion complex self-assembled films were more than two orders of magnitude higher than Kobs . Cyclodextrin can be separated azobenzene molecules, thus inhibiting the azobenzene in the self-assembled film aggregation, effectively improve its electrochemical activity.