Luminescent 'On-Off'CdSe/ZnS Quantum Dot Chemodosimeter for Hydroxide Based on Photoinduced Electron Transfer from a Carboxylate Moiety

LA Gauci, LG Kelland, DC Magri

Index: Gauci, Lara A.; Kelland, Lindsay G.; Magri, David C. Journal of Fluorescence, 2013 , vol. 23, # 4 p. 793 - 798

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Abstract

Abstract A CdSe-ZnS quantum dot (QD) has been surface functionalised by a place exchange reaction with p-mercaptomethyl benzoate synthesized by a three-step procedure. The resulting lumophore-spacer-receptor QD-conjugate was characterized by IR, UV-visible and fluorescence spectroscopy. The emission profile of the QD reveals a narrow emission peak centred at 542 nm. Addition of hydroxide to the solution containing the QD-conjugate ...