Size discrimination of colloidal nanoparticles by thiol-functionalized MCM-41 mesoporous molecular sieves

Mukherjee, Priyabrata ; Sastry, Murali ; Kumar, Rajiv (2000) Size discrimination of colloidal nanoparticles by thiol-functionalized MCM-41 mesoporous molecular sieves PhysChemComm, 3 (4). pp. 15-17. ISSN 1460-2733

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Official URL: http://pubs.rsc.org/en/content/articlepdf/2000/qu/...

Related URL: http://dx.doi.org/10.1039/B002419H

Abstract

Thiol-functionalized MCM-41 mesoporous materials with a well-defined pore size of 40 Å may be used to discriminate between colloidal gold and silver particles in a mixture. More specifically, the thiol-functionalized MCM-41 material selectively entraps colloidal gold particles (size 35 Å) in the pores from a mixture of the gold and silver particles of size 70 Å. The gold particles are held in the matrix via thiolate linkages and this process has been studied using UV-vis spectroscopy and thermogravimetry/differential thermal analysis. This approach is promising for application in bioseparation methodologies as well as in the generation of one-dimensional superstructure assemblies.

Item Type:Article
Source:Copyright of this article belongs to Royal Society of Chemistry.
ID Code:47227
Deposited On:07 Jul 2011 04:53
Last Modified:18 May 2016 02:58

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