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- Title
Effect of capping agents on optical and antibacterial properties of cadmium selenide quantum dots.
- Authors
DEEPIKA; DHAR, RAKESH; SINGH, SUMAN; KUMAR, ATUL
- Abstract
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.
- Subjects
ANTIBACTERIAL agents; OPTICAL properties of cadmium selenide; QUANTUM dots; AQUEOUS solutions; TEMPERATURE effect; THIOGLYCOLIC acid
- Publication
Bulletin of Materials Science, 2015, Vol 38, Issue 5, p1247
- ISSN
0250-4707
- Publication type
Article
- DOI
10.1007/s12034-015-1006-9