DDME分子在石墨(HOPG)表面吸附  

Adsorption of DDME on HOPG Investigated by Scanning Tunneling Microscopy

作　　者：刘锴[1] 杜文峰[1] 季航[1] 赵汝光[1] 

机构地区：[1]北京大学物理学院人工微结构与介观物理国家重点实验室,北京100871

出　　处：《北京大学学报（自然科学版）》2005年第3期429-433,共5页Acta Scientiarum Naturalium Universitatis Pekinensis

基　　金：973项目 (0 0 1CB6 10 5 0 4 );基金委重点资助项目 (10 1340 30 )

摘　　要：用扫描隧道显微镜(STM )研究了用真空沉积法在高定向有序石墨(HOPG)上制备的1,1dicyano -2 ,2 - (4 -dimethylaminophenyl)ethylene(DDME)薄膜。DDME在石墨表面形成十分平整的分子柱状堆积二维有序结构。还观察到了随覆盖度降低转变成为其他二维有序结构。A thin film of 1,1-dicyano-2,2-(4-dimethylaminophenyl) ethylene (DDME) has been grown on HOPG by a modified vacuum deposition. The films were characterized by our homemade scanning tunneling microscopy (STM) under ambient conditions. The acquired STM images exhibit that DDME can form a uniform adsorption layer at room temperature. Highly ordered parallel molecular stacks were observed with STM.

关 键 词：STM DDME 物理吸附 

分 类 号：O647.3[理学—物理化学]