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Phthalocyanine macrocycle as stabilizer for gold and silver nanoparticles

Lokesh, Koodlur Sannegowda and Narayanan, Venkata and Sampath, Srinivasan (2009) Phthalocyanine macrocycle as stabilizer for gold and silver nanoparticles. In: Microchimica Acta, 167 (1-2). pp. 97-102.

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Abstract

A one-step process was used for the preparation of gold and silver nanoparticles stabilized by an aminophthalocyanine macrocycle. The resultant nanoparticles were characterized by absorption spectra, infrared spectroscopy, scanning electron microscopy and transmission electron microscopy. The nanoparticles were found to possess relatively narrow size distribution. The gold nanoparticles have an average diameter of similar to 2 nm, while silver particles have 4-5 nm. Preliminary studies on fluorescence and surface enhanced Raman spectroscopy were carried out using these nanoparticles. Fluorescence studies indicate that gold nanoparticles do not quench the fluorescence, while silver nanoparticles do. The stabilized nanoparticles showed enhancement of the Raman signals, thus revealing that they are good substrates for surface enhanced Raman scattering studies.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to Springer.
Keywords: Gold nanoparticles; Silver nanoparticles; Tetraminocobaltphthalocyanine; Fluorescence; Surface enhanced Raman spectroscopy
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Depositing User: Id for Latest eprints
Date Deposited: 04 Dec 2009 08:44
Last Modified: 19 Sep 2010 05:52
URI: http://eprints.iisc.ac.in/id/eprint/24971

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