温度诱导5,15-二苯基卟啉在银(110)表面上的自组装行为  

Temperature induced self-assembly of 5,15-diphenylporphyrin molecules on Ag(110)

作　　者：向菲菲[1] 李超[1] 王仲平[1] 刘小青[1] 吕燕[1] 蒋丹凤[1] 冷新丽[1] 王立[1] 

机构地区：[1]南昌大学物理学系,江西南昌330031

出　　处：《南昌大学学报（理科版）》2015年第1期60-65,共6页Journal of Nanchang University(Natural Science)

基　　金：国家自然科学基金资助项目[61474059;U1432129]

摘　　要：利用超高真空扫描隧道显微镜(UHV-STM),在不同温度下原位研究5,15-二苯基卟啉分子在银(110)金属表面上的自组装纳米结构。结果表明,在室温下银(110)金属表面参与调制5,15-二苯基卟啉分子的自组装结构,使得5,15-二苯基卟啉分子分别沿银[112],[112]方向排布成自组装纳米结构。进一步的热处理可将在室温下游离5,15-二苯基卟啉分子转变为密堆自组装结构,并将少量5,15-二苯基卟啉分子转变为银二苯基卟啉分子。The self-assembled structure of 5,15-diphenylporphyrin molecules on Ag(110)surface at different annealing temperatures has been investigated by ultra-high vacuum scanning tunneling microscopy.The STM observations show that the Ag(110)surface participates in meditating the self-assembled structure of5,15-diphenylporphyrin molecules at room temperature.As a result,5,15-diphenylporphyrin molecules arrange themselves to form self-assembled structure along Ag[112]and [112]axis respectively.Further thermal treatment drives the unassembled molecules to form close-packed structure and leads to the metalation of small amount of 5,15-diphenylporphyrin molecules with silver adatoms on the surface.

关 键 词：扫描隧道显微镜 5 15-二苯基卟啉 银(110) 自组装结构 

分 类 号：O485[理学—固体物理]