Adsorption of substituted pyrrolidone molecules on Au(111): an STM and XPS study

被引：0
|
作者：
Charlier, J
Cousty, J
Xie, ZX
Vasset-Le Poulennec, C
Bureau, C
机构：
[1] CEA Saclay, DSM DRECAM SRSIM, F-91191 Gif Sur Yvette, France
[2] Xiamen Univ, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China
来源：
SURFACE AND INTERFACE ANALYSIS | 2000年 / 30卷 / 01期
关键词：
pyrrolidone; gold; STM; XPS; adsorption; chemisorption; self-assembled monolayer;
D O I：
10.1002/1096-9918(200008)30:1<283::AID-SIA861>3.3.CO;2-A
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The adsorption of several molecules with a pyrrolidone ring (triacontane-pyrrolidone (NTP), 2-pyrrolidone (Py) and methyl-2-pyrrolidone (Mpy)) on an Au(111) surface has been studied by scanning tunnelling microscopy (STM) and by XPS, Self-assembled monolayers have been observed only for NTP and Py molecules, whereas STM images show a disordered Mpy overlayer. The XPS measurements on Py and Mpy monolayers reveal that the nitrogen atom of the pyrrolidone group is involved in different chemical bonds, depending on the molecule. Considering both STM and XPS data, models of molecule packing are proposed. Finally, tacking advantage of the different locations of the pyrrolidone function in these monolayers, we discuss the parameters that govern the presence of the pyrrolidone group in STM images, Copyright (C) 2000 John Wiley & Sons, Ltd.
引用
收藏
页码：283 / 287
页数：5
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