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Quantum dots (nanoparticles) of cadmium sulphide have been synthesized in N,N'-dimethylformamide (DMF). The preparation shows that particles are air stable for quite some time. Freshly prepared colorless solutions containing CdS nanoparticles show blue shifts of >100 nm in their UV-visible absorption spectra. Bright yellow light emission from the samples was observed when illuminated with 365-nm...
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