Reversible exchange of self-assembled monolayers of semifluorinated n-alkanethiols and n-alkanethiols on Au/mica surfaces

被引：17
|
作者：
Patole, S. N. [1 ]
Baddeley, C. J. [1 ]
O'Hagan, D. [1 ]
Richardson, N. V. [1 ]
机构：
[1] Univ St Andrews, EaStCHEM Sch Chem, St Andrews KY16 9ST, Fife, Scotland
来源：
JOURNAL OF PHYSICAL CHEMISTRY C | 2008年 / 112卷 / 36期
基金：
英国工程与自然科学研究理事会;
关键词：
D O I：
10.1021/jp804888g
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：
Scanning tunnelling Microscopy (STM) and photoelastic modulation infrared reflection absorption spectroscopy (PM-IRRAS) have been used to investigate the exchange of self-assembled rnonolayers (SAMs) of n-octanethiolate by semifluorinated n-octanethiolate from ethanolic solution at 340 K. The process occurs via displacement of the thiols from domain boundaries. By contrast, the reverse exchange process occurs more homogeneously via the formation of mixed thiolate domains. The ability of semifluorinated octanethiolate to adopt a range of adsorption sites with approximately similar adsorption energies may lead to this contrasting behavior.
引用
收藏
页码：13997 / 14000
页数：4
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