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The fluorescence quenching of the QDs is accompanied by an enhancement of the acceptor fluorescence and a reduction of the average fluorescence lifetime of the donor. Even though these observations are suggestive of a dynamic energy transfer process, it is shown that the quenching actually proceeds through a static interaction between the quenching partners and is probably mediated by charge\u2010transfer interactions. The bimolecular quenching rate constant estimated from the Stern\u2013Volmer plot of the fluorescence intensities, is found to be exceptionally high and unrealistic for the dynamic quenching process. Hence, a kinetic model is employed for the estimation of actual quencher\/QD ratio dependent exciton quenching rate constants of the fluorescence quenching of CdS by NBD. The present results point to the need for a deeper analysis of the experimental quenching data to avoid erroneous conclusions.<\/jats:p>","DOI":"10.1002\/cphc.201100515","type":"journal-article","created":{"date-parts":[[2011,8,31]],"date-time":"2011-08-31T23:27:59Z","timestamp":1314833279000},"page":"2735-2741","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":38,"title":["Fluorescence Quenching of CdS Quantum Dots by 4\u2010Azetidinyl\u20107\u2010Nitrobenz\u20102\u2010Oxa\u20101,3\u2010Diazole: A Mechanistic 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