Highly water-soluble and biocompatible cysteine-capped CdS nanoparticles have been synthesized in the colloidal state, and particle distribution has been narrowed down using the size-selective precipitation technique. Optical absorption and emission spectra confirm that particles formed lie within the size quantization regime. An enhancement in luminescence has been observed on addition of free Cd2+ ions and cysteine to the solution of CdS nanoparticles. The pH dependence of the fluorescence has also been studied.
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Priyam, A., Chatterjee, A., Das, S.K. et al. Synthesis and spectral studies of cysteine-capped CdS nanoparticles. Res Chem Intermediat 31, 691–702 (2005). https://doi.org/10.1163/1568567054909096
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DOI: https://doi.org/10.1163/1568567054909096