Exchange kinetics of alkanethiol self-assembled monolayers probed by attenuated total reflection with enhancement of surface plasmon resonance

被引：37

作者：

Kajikawa, K ^{[1
]}

Hara, M ^{[1
]}

Sasabe, H ^{[1
]}

Knoll, W ^{[1
]}

机构：

[1] RIKEN, INST PHYS & CHEM RES, FRONTIER RES PROGRAM, WAKO, SAITAMA 35101, JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1997年 / 36卷 / 8B期

关键词：

self-assembled monolayer; SAM; surface plasmon resonance; attenuated total reflection; ATR; alkanethiol; dimerization; exchange kinetics;

D O I：

10.1143/JJAP.36.L1116

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Exchange kinetics for octanethiol (C8H17SH) self-assembled monolayers (SAMs) by octadecanethiol (C18H37SH) in solution are studied by in situ measurements of reflectivity in the attenuated total reflection (ATR) geometry with surface plasmon resonance (SPR) enhancement. While rapid exchange kinetics are found for the octanethiol SAM prepared by 1-day exposure to the ethanol solution, the octanethiol SAM prepared by 30-minute exposure exhibits only slow exchange kinetics. This fact may originate from different adsorption states, due to the gradual dimerization of the octanethiol monomers during their exposure to the solution, with dimers being less strongly adsorbed than the monomers.

引用

页码：L1116 / L1119

页数：4

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