Dimerization process in alkanethiol self-assembled monolayer on Au(111)

被引：65

作者：

Nishida, N ^{[1
]}

Hara, M ^{[1
]}

Sasabe, H ^{[1
]}

Knoll, W ^{[1
]}

机构：

[1] SAITAMA UNIV,GRAD SCH SCI & ENGN,URAWA,SAITAMA 338,JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 1996年 / 35卷 / 6B期

关键词：

self-assembled monolayer (SAM); alkanethiol; thermal desorption; dimerization;

D O I：

10.1143/JJAP.35.L799

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Desorption kinetics of alkanethiol self-assembled monolayer (SAM) on an Au(111) surface is studied by thermal desorption spectroscopy (TDS) using a quadrupole mass spectrometer. TDS reveals for the first time that SAM desorbs to form a dimer, dialkyl disulfide molecule from the Au surface with a desorption activation energy of 32 kcal/mol. This result suggests that there exists a dimerization process of SAM molecules on the Au surface, which has been predicted by Fenter et al. [Science 266 (1994) 1216] through diffraction studies.

引用

页码：L799 / L802

页数：4

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