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Updated: Oct 10, 2025

Compact Quantum Dots for Single-molecule Imaging
Published on: October 9, 2012
Fluorescence Quenching by Förster Resonance Energy Transfer in Carbon-Cadmium Sulfide Core-Shell Quantum Dots
Karan Surana1, Bhaskar Bhattacharya1,2
1Centre of Excellence on Solar Cells and Renewable Energy, School of Basic Sciences and Research, Sharda University, Greater Noida 201310, U.P., India.
Abstract:
Carbon quantum dots (QDs) are an active subject of research in many areas of science and engineering for various applications. The present work reports the first occurrence of a carbon-cadmium sulfide core-shell QD prepared by an extremely simplified wet chemical approach where the CdS shell plays the role of a fluorescence quencher to the carbon core. The quenching effect was confirmed by fluorescence spectroscopy (steady-state and lifetime). These QDs stand as a potential candidate for sensing and imaging applications.
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