Fabrication of reusable sensor for detection of Cu2+ in an aqueous solution using a self-assembled monolayer with surface plasmon resonance spectroscopy

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

doi:10.1039/B504064G

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Fabrication of reusable sensor for detection of Cu²⁺ in an aqueous solution using a self-assembled monolayer with surface plasmon resonance spectroscopy†

Taewook Kang,^a Surin Hong,^a Jungwoo Moon,^a Seogil Oh^a and Jongheop Yi*^a

Author affiliations

* Corresponding authors

^a School of Chemical and Biological Engineering, Seoul National University, San 56-1, Shilim-dong, Kwanak-gu, Seoul, Korea
E-mail: jyi@snu.ac.kr
Fax: 82-2-885-6670
Tel: 82-2-880-7438

Abstract

The proposed procedure for recycling the sensor surface consists of (1) the self-assembly of 2-aminoethanethiol hydrochloride (AET) on the Au substrate, (2) the neutralization of zwitterion-like species, –NH₃⁺Cl⁻ to –NH₂ by treatment with a NaOH solution (pH 11), (3) the detection of Cu²⁺ on the NaOH-treated AET–Au substrate, and finally (4) regeneration of the sensor surface from [–NH₂ → Cu²⁺] to [–NH₃⁺Cl⁻] by treatment with 1 M HCl.

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Supplementary files

Experimental procedures and details. Stratified structure of an SPR system (Fig. S1), incident angle SPR contour plot for AET SAM (Fig. S2) PDF (134K)

Article information

DOI: https://doi.org/10.1039/B504064G
Article type: Communication
Submitted: 23 Mar 2005
Accepted: 24 May 2005
First published: 15 Jun 2005

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Chem. Commun., 2005, 3721-3723

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Fabrication of reusable sensor for detection of Cu²⁺ in an aqueous solution using a self-assembled monolayer with surface plasmon resonance spectroscopy

T. Kang, S. Hong, J. Moon, S. Oh and J. Yi, Chem. Commun., 2005, 3721 DOI: 10.1039/B504064G

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