Preparation of CdTe nanocrystal-polymer composite microspheres in aqueous solution by dispersing method
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Highly fluorescent CdTe nanocrystals were synthesized in aqueous solution, and then processible CdTe nanocrystal-polymer composites were fabricated by coating the aqueous nanocrystals with copolymers of styrene and octadecyl-p-vinyl-benzyldimethylammonium chloride (SOV-DAC) directly. A dichloromethane solution of CdTe nanocrystal-polymer composites was dispersed in the aqueous solution o0f poly (vinyl alcohol) (PVA) generating highly fluorescent microspheres. Experimental parameters such as the concentration of nanocrystal-polymer composites, the concentration of PVA, and stirring speed which had important effect on the preparation of the microspheres were investigated in detail with fluorescent microscope characterization.
Keywordssemiconductor nanocrystals CdTe fluorescence dispersing composite microspheres
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