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International Journal of Spectroscopy
Volume 2011 (2011), Article ID 954252, 6 pages
Research Article

The Effect of Multidentate Biopolymer Based on Polyacrylamide Grafted onto Kappa-Carrageenan on the Spectrofluorometric Properties of Water-Soluble CdS Quantum Dots

Department of Chemistry, Payame Noor University, Tehran 19395-4697, Iran

Received 20 July 2011; Revised 29 August 2011; Accepted 4 September 2011

Academic Editor: Jaan Laane

Copyright © 2011 Ghasem Rezanejade Bardajee et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A new fluorescent composite based on CdS quantum dots immobilized on the multidentate biopolymer matrix is prepared through the graft copolymerization of the acrylamide onto kappa-Carrageenan. A variety of techniques like thermogravimetric analysis (TGA), transmission electron microscopy (TEM), and Fourier transform infrared spectroscopy (FT-IR) was used to confirm the structure of the obtained samples. To investigate the spectrofluorometric properties, fluorescence spectroscopy of the obtained quantum dots was studied.