Crystalline structures of pristine and hydrated mercaptohexanol self-assembled monolayers an Au(111)

被引：49

作者：

Poirier, GE

Pylant, ED

White, JM

机构：

[1] Natl. Inst. of Std. and Technology, Gaithersburg

[2] Dept. of Chemistry and Biochemistry, University of Texas, Austin

来源：

JOURNAL OF CHEMICAL PHYSICS | 1996年 / 105卷 / 05期

关键词：

D O I：

10.1063/1.472078

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 crystalline structures of hydroxy-functionalized hexanethiol self-assembled monolayers on Au(111) were characterized using gas-phase transport of molecular precursors and an ultrahigh vacuum scanning tunneling microscope. In the pristine state the monolayer exhibits a commensurate lattice with an oblique primitive unit-cell of dimensions a = 3, b = root 13, alpha = a tan(2 root 3); a structure that is fundamentally different than the hexagonal lattice observed for methyl-terminated monolayers. Hydration of the monolayer results in conversion to a polymorphic phase. These results demonstrate the importance of end-group chemical bonding in the molecular packing of this widely studied class of materials.

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页码：2089 / 2092

页数：4

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