Journal
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
Volume 18, Issue 5, Pages 3419-3426Publisher
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2018.14687
Keywords
L-Cysteine; CdSe Quantum Dots; Photochemical; Optical Properties; XRD; TEM
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Funding
- BARC, DAE
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L-cysteine capped CdSe quantum dots were synthesized via photochemical route in aqueous solution under UV photo-irradiation. The as grown CdSe quantum dots exhibit broad fluorescence at room temperature. The CdSe quantum dots were found to be formed only through the reactions of the precursors, i.e., Cd(NH3)(4)(2+) and SeSO32- with the photochemically generated 1-hydroxy-2-propyl radicals, (CH3)(2)(COH)-O-center dot radicals, which are formed through the process of H atom abstraction by the photoexcited acetone from 2-propanol. L-Cysteine was found to act as a suitable capping agent for the CdSe quantum dots and increases their biocompatability. Cytotoxicty effects of these quantum dots were evaluated in Chinese Hamster Ovary (CHO) epithelial cells, indicated a significant lower level for the L-cysteine capped CdSe quantum dots as compare to the bare ones.
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