Preparation of Luminescent CdTe Nanocrystal-BaSO4 Composite Microspheres

Chem. J. Chinese Universities

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Preparation of Luminescent CdTe Nanocrystal-BaSO4 Composite Microspheres

LIU Yi, ZHANG Hao, WANG Chun-Lei, YANG Bai*

State Key Laboratory of Supramolecular Structure and Materials, Jilin Univeristy, Changchun 130012, China

Received:2008-09-11 Revised:1900-01-01 Online:2008-12-10 Published:2008-12-10
Contact: YANG Bai

Abstract

Abstract: On the basis of the technique of surfactant bilayer modification, aqueous luminescent CdTe nanocrystals(NCs) were modified with DODAB layer and SDS layer. Due to the introduction of SO-4 sites on NC surface from SDS layer, NCs were further incorporated into BaSO4 composite microspheres through the stepwise addition of Ba2+ and SO2-4. The size and the composition of microspheres were characterized via SEM, TEM, confocal fluorescence microscope and XRD. Owning to the protection of BaSO4, the photoluminescence of as-prepared BaSO4-CdTe microspheres were more antacid than the original aqueous CdTe NCs.

Key words: Nanocrystal, Surface modification, Barium sulfate, Composite sphere

CLC Number:

O631

TrendMD:

LIU Yi, ZHANG Hao, WANG Chun-Lei, YANG Bai*. Preparation of Luminescent CdTe Nanocrystal-BaSO4 Composite Microspheres[J]. Chem. J. Chinese Universities, doi: .

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Preparation of Luminescent CdTe Nanocrystal-BaSO4 Composite Microspheres

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