Particle size enlargement and 6-fold fluorescence enhancement of colloidal CdS quantum dots induced by selenious acid.

  title={Particle size enlargement and 6-fold fluorescence enhancement of colloidal CdS quantum dots induced by selenious acid.},
  author={Dipika Saha and Devendra Singh Negi},
  journal={Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy},
  • D. Saha, D. Negi
  • Published 15 January 2020
  • Medicine, Chemistry
  • Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
Herein, colloidal CdS QDs have been synthesized by using cysteine as a stabilizing agent. The interaction between the CdS QDs and selenious acid was monitored by using UV-visible, fluorescence and Fourier transform infrared (FTIR) spectroscopy. The onset of absorption of the CdS QDs (430 nm) was progressively red-shifted upon increase in the concentration of selenious acid at pH 10. It indicated enlargement of the particle size which was confirmed by the dynamic light scattering (DLS… Expand


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  • D. Saha, D. Negi
  • Chemistry, Medicine
  • Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
  • 2018
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