Effect of capping agents on optical and antibacterial properties of cadmium selenide quantum dots

被引：16

作者：

Deepika ^{[1
]}

Dhar, Rakesh ^{[1
]}

Singh, Suman ^{[2
]}

Kumar, Atul ^{[1
]}

机构：

[1] Guru Jambheshwar Univ Sci & Technol, Dept Appl Phys, Hisar 125001, Haryana, India

[2] Cent Sci Instruments Org CSIR CSIO, Chandigarh 160030, India

来源：

BULLETIN OF MATERIALS SCIENCE | 2015年 / 38卷 / 05期

关键词：

Capping agents; quantum confinement; poly-dispersed; luminescent; AQUEOUS SYNTHESIS; NANOPARTICLES; NANOCRYSTALS;

D O I：

10.1007/s12034-015-1006-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cadmium selenide quantum dots (CdSe QDs) were synthesized in aqueous phase by the freezing temperature injection technique using different capping agents (viz. thioglycolic acid, 1-thioglycerol, L-cysteine). Absorption spectra of CdSe QDs exhibited a blue shift as compared to its bulk counterpart, which is an indication of quantum confinement effect. The photoluminescence spectra of CdSe QDs confirmed that the particles are poly-dispersed and possess enhanced luminescent property, depending upon the chemical nature of capping agents. The QDs have been characterized by Fourier-transform infrared spectroscopy, atomic absorption spectroscopy and transmission electron microscopy. Further, antimicrobial activity of as-prepared QDs has also been investigated using the disk diffusion method.

引用

页码：1247 / 1252

页数：6

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