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Volume 3 – Issue 1 – 2022

Original Research Article

Fabrication Of Water-Soluble L-cysteine Capped CdTe Quantum Dots In Zeolite Confinement

Erandi Munasinghe1, Yohan Jayawardane1, Anuradha Rajapakshe1, Athula Bandara2,
Rohan Weerasooriya1, Lakmal Jayarathna1*

1Environmental Science Research Program, National Institute of Fundamental Studies, Kandy, 20000, (SRI LANKA)
2Department of Chemistry, University of Peradeniya, Peradeniya, 20500, (SRI LANKA)

PAGE NO: 39-44


Quantum dots (QDs) are nano crystals with tunable energy levels with respect to size, shape and charge potential. Presently, the channel structure of zeolites, traditionally used as an adsorbent, was used as the substrate for the fabrication of CdTe QDs under inert environments. The unique structure of zeolites is used as reaction chambers for the fabrication of uniform size QDs. We successfully fabricated L-cysteine capped, highly fluorescent CdTe QDs on zeolite substrate at Cd2+: Te2-: L-Cysteine molar ratio as 1: 1: 19. Newly fabricated CdTe QDs were characterized by FTIR, XRD and SEM. The newly fabricated CdTe QDs has a great potential in biomedical applications in transporting therapeutic and diagnostic agents.