Image topography of alkyl-substituted carboxylates observed by noncontact atomic force microscopy

被引：18

作者：

Sasahara, A ^{[1
]}

Uetsuka, H ^{[1
]}

Onishi, H ^{[1
]}

机构：

[1] Kanagawa Acad Sci & Technol, Surface Chem Lab, Takatsu Ku, Kawasaki, Kanagawa 2130012, Japan

来源：

SURFACE SCIENCE | 2001年 / 481卷 / 1-3期

关键词：

atomic force microscopy; titanium oxide; carboxylic acid; low index single crystal surfaces; chemisorption; surface structure; morphology; roughness; and topography; semiconducting surfaces;

D O I：

10.1016/S0039-6028(01)01028-7

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：

A series of carboxylates (HCOO-, CH3COO- and (CH3)(3)CCOO-) adsorbed on TiO2(110) were observed by noncontact atomic force microscopy. Different carboxylates were identified molecule-by-molecule in monolayers of mixed composition. The molecule-dependent image topography was quantitatively related to the atom geometry of alkyl group terminating the molecules. The image topography exhibited a good correlation with the physical topography (altitude of topmost hydrogen atoms) of the alkyl groups. though the former was not a one-to-one projection of the latter. The deviation from the one-to-one relation indicates a long-range nature of tip-molecule force. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：L437 / L442

页数：6

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