CdS quantum dots embedded in PVP: Inorganic phosphate ion sensing in real sample and its antimicrobial activity.

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ID: 101758
2020
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Abstract
Polyvinyl-pyrrolidone capped spherical cadmium sulphide quantum dots (CdS-PVP QDs), 2-6 nm in size, were developed as a selective turn-on fluorescence nanosensor for monohydrogen phosphate ion (HPO) in aqueous medium. Fluorescence intensity of CdS-PVP QDs significantly increased with addition of HPO ions, whereas the other common inorganic ions had very little effect on the fluorescence intensity. The proposed sensor may be efficiently used for the detection of HPO ions at a low level of concentration up to 213 nM in real urine sample. Cell imaging study indicates that the CdS-PVP QDs are cell permeable and can detect the intracellular distribution of HPO ions under fluorescence microscope. The CdS-PVP QDs showed considerable activity against Staphylococcus aureus also.
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Authors Dhar, Swastika;Sen, Buddhadeb;Mukhopadhyay, Subhra Kanti;Mukherjee, Trinetra;Chattopadhyay, Asoke Prasun;Pramanik, Sadhan;
Journal spectrochimica acta part a, molecular and biomolecular spectroscopy
Year 2020
DOI S1386-1425(20)30234-1
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Keywords
Antimicrobial activity quantum dots chemosensor cds cell image phosphate ion sensing

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