Interfacial kinetic enhancement of metal ion adsorption on binary mixed self-assembled monolayers

Jungwoo Moon; Taewook Kang; Seogil Oh; Inhee Choi; Surin Hong; Jongheop Yi

doi:10.1016/j.apsusc.2007.03.063

Interfacial kinetic enhancement of metal ion adsorption on binary mixed self-assembled monolayers

Jungwoo Moon, Taewook Kang, Seogil Oh, Inhee Choi, Surin Hong, Jongheop Yi

Department of Life Science

Seoul National University

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

The adsorption of metal ions, a type of surface reaction on binary mixed self-assembled monolayers (SAMs) on a gold surface composed of 1,6-hexanedithiol (HDT) with 11-mercaptoundecanoic acid (MUA), was monitored by in situ surface plasmon resonance (SPR) measurements. The differential SPR reflectance (ΔR) enables the kinetics of adsorption of Pt ²⁺ on the mixed SAMs to be investigated. Unlike single HDT SAM, kinetic analyses of the mixed SAMs showed that the rate of adsorption of Pt ²⁺ was enhanced and that it was highly dependent on the fraction of MUA present. These SPR measurements suggest that the adsorption rate of metal ions can be readily manipulated simply by using mixed SAMs.

Original language	English
Pages (from-to)	7554-7558
Number of pages	5
Journal	Applied Surface Science
Volume	253
Issue number	18
DOIs	https://doi.org/10.1016/j.apsusc.2007.03.063
State	Published - 15 Jul 2007

Keywords

Adsorption
Kinetics
Mixed SAM
Self-assembled monolayers
Surface plasmon resonance

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10.1016/j.apsusc.2007.03.063

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title = "Interfacial kinetic enhancement of metal ion adsorption on binary mixed self-assembled monolayers",

abstract = " The adsorption of metal ions, a type of surface reaction on binary mixed self-assembled monolayers (SAMs) on a gold surface composed of 1,6-hexanedithiol (HDT) with 11-mercaptoundecanoic acid (MUA), was monitored by in situ surface plasmon resonance (SPR) measurements. The differential SPR reflectance (ΔR) enables the kinetics of adsorption of Pt 2+ on the mixed SAMs to be investigated. Unlike single HDT SAM, kinetic analyses of the mixed SAMs showed that the rate of adsorption of Pt 2+ was enhanced and that it was highly dependent on the fraction of MUA present. These SPR measurements suggest that the adsorption rate of metal ions can be readily manipulated simply by using mixed SAMs.",

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T1 - Interfacial kinetic enhancement of metal ion adsorption on binary mixed self-assembled monolayers

AU - Moon, Jungwoo

AU - Kang, Taewook

AU - Oh, Seogil

AU - Choi, Inhee

AU - Hong, Surin

AU - Yi, Jongheop

PY - 2007/7/15

Y1 - 2007/7/15

N2 - The adsorption of metal ions, a type of surface reaction on binary mixed self-assembled monolayers (SAMs) on a gold surface composed of 1,6-hexanedithiol (HDT) with 11-mercaptoundecanoic acid (MUA), was monitored by in situ surface plasmon resonance (SPR) measurements. The differential SPR reflectance (ΔR) enables the kinetics of adsorption of Pt 2+ on the mixed SAMs to be investigated. Unlike single HDT SAM, kinetic analyses of the mixed SAMs showed that the rate of adsorption of Pt 2+ was enhanced and that it was highly dependent on the fraction of MUA present. These SPR measurements suggest that the adsorption rate of metal ions can be readily manipulated simply by using mixed SAMs.

AB - The adsorption of metal ions, a type of surface reaction on binary mixed self-assembled monolayers (SAMs) on a gold surface composed of 1,6-hexanedithiol (HDT) with 11-mercaptoundecanoic acid (MUA), was monitored by in situ surface plasmon resonance (SPR) measurements. The differential SPR reflectance (ΔR) enables the kinetics of adsorption of Pt 2+ on the mixed SAMs to be investigated. Unlike single HDT SAM, kinetic analyses of the mixed SAMs showed that the rate of adsorption of Pt 2+ was enhanced and that it was highly dependent on the fraction of MUA present. These SPR measurements suggest that the adsorption rate of metal ions can be readily manipulated simply by using mixed SAMs.

KW - Adsorption

KW - Kinetics

KW - Mixed SAM

KW - Self-assembled monolayers

KW - Surface plasmon resonance

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DO - 10.1016/j.apsusc.2007.03.063

M3 - Article

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JO - Applied Surface Science

JF - Applied Surface Science

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Interfacial kinetic enhancement of metal ion adsorption on binary mixed self-assembled monolayers

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