Immobilization of biogenic gold nanoparticles in thermally evaporated fatty acid and amine thin films

Shiv Shankar, S. ; Ahmad, Absar ; Pasricha, Renu ; Islam Khan, M. ; Kumar, Rajiv ; Sastry, Murali (2004) Immobilization of biogenic gold nanoparticles in thermally evaporated fatty acid and amine thin films Journal of Colloid and Interface Science, 274 (1). pp. 69-75. ISSN 0021-9797

Full text not available from this repository.

Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/j.jcis.2003.12.011

Abstract

We have recently demonstrated the biological synthesis of gold nanoparticles by the reduction of aqueous chloroaurate ions by the fungus Fusarium oxysporum and with extract of geranium (Pelargonium graveolens) leaf. In this paper, we demonstrate the immobilization of biogenic gold nanoparticles in lipid thin films deposited by thermal evaporation. The charge on the gold nanoparticles synthesized by both the fungus and the geranium plant extract is used to facilitate their immobilization in both anionic and cationic lipid thin films. A rough estimate of the isoelectric point of the proteins capping the gold nanoparticles synthesized using the fungus could be made by pH-dependent microgravimetry studies of the immobilization process. An interesting size and shape selectivity in the immobilized gold nanoparticles is observed in the lipid thin films. The biogenic gold nanoparticle-lipid composite films were characterized using quartz crystal microgravimetry, UV-vis absorption spectroscopy, Fourier transform infrared (FTIR) spectroscopy, and transmission electron microscopy.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Lipid Films; Immobilization; Size Selectivity; Shape Selectivity; Capped Nanoparticles; Gold
ID Code:47124
Deposited On:06 Jul 2011 14:18
Last Modified:06 Jul 2011 14:18

Repository Staff Only: item control page