Preparation of Water-soluble Quantum Dots and Their Self-assembly with Chitosan Derivatives

Chem. J. Chinese Universities

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Preparation of Water-soluble Quantum Dots and Their Self-assembly with Chitosan Derivatives

XU Hai-E, YAN Cui-E

Faculty of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China

Received:2006-06-27 Revised:1900-01-01 Online:2007-01-10 Published:2007-01-10
Contact: YAN Cui-E

Abstract

Abstract: Water-soluble CdTe quantum dots(QDs) were prepared by using 3-mercaptopropionic acid as the stabilizer, and their preparation parameters were optimized. Self-assembling of QDs with chitosan and folic acid(FA) and poly(ethylene glycol)(PEG) modified chitosan via electrostatic interaction was also investigated. The results demonstrate that fluorescence intensity of chitosan/QDs complex was much higher than that of QDs themselves. The complex shows a clear core/shell structure, and QDs were located in the core. The modified chitosan/QDs complexes were smaller and more uniform than those of unmodified chitosan.

Key words: Water-soluble quantum dots, Chitosan, Chitosan derivative, Self-assembly

CLC Number:

O631
O657

TrendMD:

XU Hai-E, YAN Cui-E. Preparation of Water-soluble Quantum Dots and Their Self-assembly with Chitosan Derivatives[J]. Chem. J. Chinese Universities, doi: .

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Preparation of Water-soluble Quantum Dots and Their Self-assembly with Chitosan Derivatives

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