有机分子在单晶金表面的自组装研究

摘要

利用低温超高真空扫描隧道显微镜研究基于三嗪的小分子(TBTZ)在单晶Au(111)表面的自组装.不同覆盖率下,分子表现出不同的自组装行为.在低覆盖率下,TBTZ分子有自组装倾向,但容易受到扰动而解离,处于亚稳态;在高覆盖率下,TBTZ分子可以形成稳定的大面积自组织网络结构,同时表现出两种不同的排列方式,两种排列方式是由于两种分子构型造成的.%The self-assembly of small molecules based on the triazine (TBTZ)on the single crystal Au (111)surface is studied by the cryogenic ultrahigh vacuum scanning tunneling microscope.Under different coverage rates,the molecules exhibit different self-assembly behaviors.Under the low coverage rate,the TBTZ molecules have self-assembly tendency,but they are easily dissociated by disturbance and are in metastable state.Under the high coverage rate,the TBTZ molecules can form the large area of the stable self-assembly network structure and at the same time show two different arrangements.The two arrangements are caused by two molecular configurations.