Fluorescence Quenching by Förster Resonance Energy Transfer in Carbon-Cadmium Sulfide Core-Shell Quantum Dots

Karan Surana; Bhaskar Bhattacharya

doi:10.1021/acsomega.1c04529

Fluorescence Quenching by Förster Resonance Energy Transfer in Carbon-Cadmium Sulfide Core-Shell Quantum Dots

ACS Omega. 2021 Nov 25;6(48):32749-32753. doi: 10.1021/acsomega.1c04529. eCollection 2021 Dec 7.

Authors

Karan Surana¹, Bhaskar Bhattacharya^{1

2}

Affiliations

¹ Centre of Excellence on Solar Cells and Renewable Energy, School of Basic Sciences and Research, Sharda University, Greater Noida 201310, U.P., India.
² Department of Physics, Mahila Mahavidyalaya, Banaras Hindu University, Varanasi 221005, 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.