Schiff碱N-aete-N在Au(111)上自组装单分子膜的电化学及STM研究

An Electrochemistry and in situ STM Studies of Self-assembled Monolayer of Schiff Base N-aete-N on Au(111) Surface

利用电化学技术及扫描隧道显微镜 ( STM) ,于 0 .1 mol/L HCl O4溶液中研究了 Schiff碱 N-aete-N在单晶 Au( 1 1 1 )面上所形成的自组装单分子膜 ( SAMs)的电化学性质及结构 .N-aete-N在 Au( 1 1 1 )电极表面的吸附抑制了金的阳极氧化 ,同时使固 /液界面双层电容明显降低 .观察到 N-aete-N SAMs的高分辨 STM图像 .N-aete-N分子在 Au( 1 1 1 )表面上以 ( 6× 7)结构单胞呈二维有序排列 ,其表面浓度为5 .5× 1 0 -11mol/cm2 .

The self-assembled monolayer of Schiff base N-aete-N molecules on Au(111) in 0.1 mol/L HClO 4 solution has been investigated by electrochemical measurements and in situ STM. Two-dimensional ordered molecular arrays with a (6×7) commensurate structure were observed. The N-aete-N molecules are adsorbed on Au(111) in a flat-lying orientation and with a surface concentration of 5.5×10 -11 {mol/cm 2}.