Behavior of binary alcohol mixtures adsorbed on graphite using calorimetry and scanning tunneling microscopy

被引：17

作者：

Wang, Guojie

Lei, Shengbin

De Feyter, Steven

Feldman, Rebecca

Parker, Julia E.

Clarke, Stuart M.

机构：

[1] Katholieke Univ Leuven, Div Mol & Nanomat, B-3001 Heverlee, Belgium

[2] Katholieke Univ Leuven, Div Mol & Nanomat, B-3001 Heverlee, Belgium

[3] Katholieke Univ Leuven, INPAC, B-3001 Heverlee, Belgium

来源：

LANGMUIR | 2008年 / 24卷 / 06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/la703240y

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The mixing behavior of binary combinations of linear alcohols adsorbed from their liquids is studied by calorimetry and scanning tunneling microscopy (STM). In particular, we consider combinations of primary alcohols that differ by a single methylene group. Where the shorter alcohol has an odd number of carbon atoms, the combination is found to mix, essentially, ideally on the surface. However, for combinations where the shorter alcohol has an even number of carbon atoms, we find that there is molecular complex formation for shorter members but ideal mixing for longer (n > 12) homologues. This extends previous work in this area by the determination of the limits of surface molecular complex formation. We also exploit STM to address this unexpected complex formation.

引用

页码：2501 / 2508

页数：8

共 32 条

[1] The crystalline structures of the even alkanes hexane, octane, decane, dodecane and tetradecane monolayers adsorbed on graphite at submonolayer coverages and from the liquid [J].