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Journal of Chemistry
Volume 2013, Article ID 202061, 6 pages
Research Article

CdTe Quantum Dots Embedded in Multidentate Biopolymer Based on Salep: Characterization and Optical Properties

Department of Chemistry, Payame Noor University, P.O. Box 19395-3697, Tehran, Iran

Received 30 April 2013; Revised 28 June 2013; Accepted 28 June 2013

Academic Editor: Fa-Nian Shi

Copyright © 2013 Ghasem Rezanejade Bardajee and Zari Hooshyar. 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.


This paper describes a novel method for surface modification of water soluble CdTe quantum dots (QDs) by using poly(acrylic acid) grafted onto salep (salep-g-PAA) as a biopolymer. As-prepared CdTe-salep-g-PAA QDs were characterized by Fourier transform infrared (FT-IR) spectrum, thermogravimetric (TG) analysis, and transmission electron microscopy (TEM). The absorption and fluorescence emission spectra were measured to investigate the effect of salep-g-PAA biopolymer on the optical properties of CdTe QDs. The results showed that the optical properties of CdTe QDs were significantly enhanced by using salep-g-PAA-based biopolymer.