Journal
CHEMICAL PHYSICS LETTERS
Volume 491, Issue 1-3, Pages 75-79Publisher
ELSEVIER
DOI: 10.1016/j.cplett.2010.03.068
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Funding
- Department of Science and Technology, Government of India
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Cadmium sulfide particles have been synthesized in the aqueous medium using the amino acid histidine as a stabilizing agent. These particles demonstrate the phenomenon of size quantization effect. The fluorescence of histidine-stabilized CdS was found to be enhanced and quenched by the addition of DNA bases adenine and guanine, respectively. The fluorescence enhancement of CdS in the presence of adenine has been explained on the basis of interaction between the quantum dot stabilizer and the amino group of adenine. Quenching of CdS fluorescence by guanine occurs due to interaction of the substrate with the quantum dot surface. (C) 2010 Elsevier B.V. All rights reserved.
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