Graphical representation of the binding of CURNPs to Cu2+(fluorescence off) and release of CURNPs (fluorescence on) by the reaction of S2−with copper bound to CURNPs.
CTAB-PNPs are bound to dichromate ion by electrostatic interaction to form stable non-fluorescent micellar complex which is responsible for the ‘FL quenching’ of CTAB-PNPs.
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