Title of article
Synthesis of CdSe/ZnSe quantum dots passivated with a polymer for oxidation prevention
Author/Authors
Kwon، نويسنده , , Young-Tae and Choi، نويسنده , , Yo-Min and Kim، نويسنده , , Ka-Hee and Lee، نويسنده , , Chan-Gi and Lee، نويسنده , , Kun-Jae and Kim، نويسنده , , Bum Sung and Choa، نويسنده , , Yong-Ho، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2014
Pages
4
From page
83
To page
86
Abstract
Surface overcoated CdSe/ZnSe core/shell structured quantum dots (QDs) with enhanced stability, narrow size distribution and strong photoluminescence have been successfully synthesized by using a simple poly(methylmethacrylate) (PMMA) coating on nanoparticles. When applied to the surface of QDs, the polymer coating provided ultra-dispersion stability and a high fluorescence quantum yield of above 80% that prevented chemical degradation, such as aggregation and Ostwald ripening. The degree of degradation was measured with respect to storage time (1, 7, 15, and 30 days) in order to provide a comparison between PMMA uncoated and coated QDs, and the oxidation of QDs was confirmed with Fourier transform infrared spectroscopy.
Keywords
PMMA coating , Fluorescence stability , Dispersion stability , Oxidation , Degradation
Journal title
Surface and Coatings Technology
Serial Year
2014
Journal title
Surface and Coatings Technology
Record number
1831674
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