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Language: English

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received March 31, 2005
Accepted November 17, 2005

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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pH-Triggered ionization of self-assembled monolayers investigated by in-situ surface plasmon resonance measurements

Surin Hong Taewook Kang Jungwoo Moon Seogil Oh Jongheop Yi^†

School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, San 56-1, Shinlim-dong, Kwanak-gu, Seoul 151-742, Korea

Korean Journal of Chemical Engineering, March 2006, 23(2), 321-324(4), 10.1007/BF02705735

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Abstract

Self-assembled monolayers (SAMs) of 2-aminoethanethiolhydrochloride (AET) or 2-aminoethanethiolhydrochloride (AHT) were formed on gold substrate. Deprotonation and reprotonation of SAMs of AET and AHT ongold substrate were investigated by using time-resolved surface plasmon resonance (SPR) measurements. The changesof the terminal functional groups from ?NH3+Cl? to ?NH2 (vice versa) via the HCl and NaOH treatment were successfullydetected, based on the fact that the initially formed AET and AHT SAMs were assumed to be a zwitterion-like species,_NH3+Cl-.

Keywords

Ionization Surface Plasmon Resonance Self-assembled Monolayers

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