Synthesis and surface modification of core/shell quantum dots with PEG for biological detection and imaging
Publish place: 1st New and Advanced Materials International Congress
Publish Year: 1391
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
NAMIC01_095
تاریخ نمایه سازی: 18 تیر 1391
Abstract:
Semi-conductor Quantum dots (QDs) are a unique class of inorganic fluorophore. As a result of their exceptional photophysical properties, they are gathering widespread attention. In this work presented here, cdse/zns core/shell tunable quantum dots were synthesize in two stage by solvothermal method . Their application in biological fluids or aqueous environment requires modulation of chemical nature of quantum dot surfaces. As a result, their solubility is changed and additional chemical functionalities are added. To develop water-soluble, biocompatible QD micelles, the core-shell CdSe/ZnS of red emission were synthesized and capped in poly ethylene glycol (PEG).The resulting QDs-polymer nanocomposite particles are suitable for applications in biomedical imaging and detection, as a consequence of their colloidally stability in water suspensions and exhibition of good photostability. The core/shell structure was proved by approach characterizations such as transmission electron microscopy(TEM), Fourier transform infrared (FTIR), UV- Spectrometry and photo luminescence spectroscopy
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Authors
H. Ostadi
Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
M. Alizadeh
Faculty of Polymer and Color Engineering, Amirkabir University of Technology, Tehran, Iran
M. hakim
Department of Material science and Engineering , Sharif University of Technology, Tehran, Iran
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