Self-assembled structure of alkyloxy substituted benzoic acid methyl ester on HOPG: An STM study

被引：1
|
作者：
Yuan, QH [1 ]
Lu, J [1 ]
Wan, LJ [1 ]
Bai, CL [1 ]
机构：
[1] Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China
来源：
CHINESE SCIENCE BULLETIN | 2004年 / 49卷 / 24期
基金：
中国国家自然科学基金;
关键词：
scanning tunneling microscopy (STM); self-assembly dipole-dipole interaction; alkyloxy substituted benzoic acid methyl ester;
D O I：
10.1360/04wb0090
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Self-assembled structures of 3,4,5-tris-dodecyloxy benzoic acid methyl ester (E12), 3,4,5-tris-tetradecyloxy-benzoic acid methyl ester (E14) and their mixture (E12/E14) have been studied on HOPG by scanning tunneling microscopy (STM). Dimer-like patterns induced by dipole-dipole interaction are observed in E12 and E14 monolayers. The molecules form close-packed rows and interdigitate with the alkyl chains in adjacent molecules. The structural differences are proposed to be from the different length of substituted alkyl chains. Owing to similar adsorption energy, phase separation is observed in the E12 and E14 mixed adlayer with different domains.
引用
收藏
页码：2590 / 2593
页数：4
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