Issue 33, 2013

Sunlight mediated synthesis and antibacterial properties of monolayer protected silver clusters

Abstract

Glutathione protected, silver clusters were synthesized within gel cavities, using sunlight. Compared to the conventional chemical reduction process, this method is cheaper and environmentally friendly as it involves the use of natural resources. The as-synthesized silver quantum clusters in aqueous medium show a distinct step-like behavior in their absorption profile. They have been characterized with various spectroscopic and microscopic techniques such as UV/Vis Spectroscopy, Luminescence Spectroscopy, Fourier Transform Infrared Spectroscopy (FTIR), High Resolution Transmission Electron Microscopy (HRTEM), and X-ray Photoelectron Spectroscopy (XPS). Polyacrylamide gel cavities seemingly control the growth of the particles. The cluster synthesis is scalable by increasing the amount of reagents yielding hundreds of milligrams in a single step. The antibacterial properties of the as-synthesized Ag clusters were studied against a Gram negative and Gram positive organism, Escherichia coli and Staphylococcus aureus, respectively.

Graphical abstract: Sunlight mediated synthesis and antibacterial properties of monolayer protected silver clusters

Supplementary files

Article information

Article type
Paper
Submitted
26 Apr 2013
Accepted
17 Jun 2013
First published
18 Jun 2013

J. Mater. Chem. B, 2013,1, 4059-4064

Sunlight mediated synthesis and antibacterial properties of monolayer protected silver clusters

I. Chakraborty, T. Udayabhaskararao, G. K. Deepesh and T. Pradeep, J. Mater. Chem. B, 2013, 1, 4059 DOI: 10.1039/C3TB20603C

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