Synthesis of gold nanoparticles stabilised by metal-chelator and the controlled formation of close-packed aggregates by them

Bhattacharya, Santanu and Srivastava, Aasheesh (2003) Synthesis of gold nanoparticles stabilised by metal-chelator and the controlled formation of close-packed aggregates by them. In: Journal of Chemical Sciences, 115 (5-6). pp. 613-619.

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Abstract

Nanoparticles have properties that can be fine-tuned by their size as well as shape. Hence, there is significant current interest in preparing nano-materials of small size dispersity and to arrange them in close-packed aggregates. This manuscript describes ways of synthesising gold nanoparticles using a metal-chelator derivative 1, as stabiliser. Controlled synthesis conditions lead to formation of nanoparticles thereby indicating the ability of 1 to act as efficient stabiliser. The nanoparticles formed were characterised by transmission electron microscopy and UV-Vis spectroscopy. TEM analysis showed the formation of dense aggregates of nanoparticles. This can be ascribed to the inter-particle hydrogen bonding possible by the carboxylic acid moiety of 1 that leads to aggregation. The aggregation can be controlled by the pH of the solution employed for dispersing the particles.

Item Type:	Journal Article
Publication:	Journal of Chemical Sciences
Publisher:	Indian Academy of Sciences
Additional Information:	The Copyright belongs to Indian Academy of Sciences.
Keywords:	Gold nanoparticles;Synthesis;Metal chelator;Hydrogen bonding;Aggregate
Department/Centre:	Division of Chemical Sciences > Organic Chemistry
Date Deposited:	12 Apr 2006
Last Modified:	19 Sep 2010 04:25
URI:	http://eprints.iisc.ac.in/id/eprint/6251

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