INTERCHANGE BETWEEN MONOLAYERS ON GOLD FORMED FROM UNSYMMETRICAL DISULFIDES AND SOLUTIONS OF THIOLS - EVIDENCE FOR SULFUR SULFUR BOND-CLEAVAGE BY GOLD METAL

被引：166

作者：

BIEBUYCK, HA ^{[1
]}

WHITESIDES, GM ^{[1
]}

机构：

[1] HARVARD UNIV,DEPT CHEM,CAMBRIDGE,MA 02138

来源：

LANGMUIR | 1993年 / 9卷 / 07期

关键词：

D O I：

10.1021/la00031a025

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Reaction of an unsymmetrical disulfide, HO(CH2)16SS(CH2)3CF3, with a gold surface yields a self-assembled monolayer containing approximately equal proportions of the two different thiolate groups. The S(CH2)3CF3 group in these mixed monolayers is replaced by S(CH2)16CN on exposure to a solution of HS(CH2)16CN in ethanol about 10(3) times more rapidly than the S(CH2)16OH group, although approximately 70-80 % of the latter group is eventually replaced. These observations support the conclusion that disulfides adsorb on the surface of gold with cleavage of their sulfur-sulfur bond to form a new species (a gold thiolate). The two thiolates formed from a single disulfide behave as independent entities in their subsequent reactions.

引用

页码：1766 / 1770

页数：5

共 19 条

[1] FORMATION OF MONOLAYERS BY THE COADSORPTION OF THIOLS ON GOLD - VARIATION IN THE HEAD GROUP, TAIL GROUP, AND SOLVENT [J].