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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 April 17, 2007
Accepted June 29, 2007

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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In-situ observation of deposition of gold nanoparticles on the amine-functionalized surface by open liquid-AFM

Younghun Kim^† Jongheop Yi¹

Department of Chemical Engineering, Kwangwoon University, Seoul 139-701, Korea ¹School of Chemical and Biological Engineering, Seoul National University, Seoul 151-742, Korea

korea1@kw.ac.kr

Korean Journal of Chemical Engineering, March 2008, 25(2), 383-385(3), 10.1007/s11814-008-0064-8

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Abstract

Gold nanoparticles (AuNPs) are used as fundamental materials in chemical/biological sensor applications, such as the DNA-AuNPs complex system for colorimetric sensor. As a result, the immobilization of AuNPs on target substrates is an important issue. In this study, we investigated the deposition of AuNPs on an amine-derivatized silicon wafer by in-situ AFM. Liquid-AFM allows structural changes and reaction kinetics of biomaterials and organic/inorganic nanomaterials in liquid media to be analyzed in-situ. The results showed that AuNPs were immobilized on an aminefunctionalized silicon wafer within a period of 1.5 hr.

Keywords

AFM Gold Nanoparticles Self-assembly Liquid-AFM

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