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  • Title: Quantum dot-based multiplexed fluorescence resonance energy transfer.
    Author: Clapp AR, Medintz IL, Uyeda HT, Fisher BR, Goldman ER, Bawendi MG, Mattoussi H.
    Journal: J Am Chem Soc; 2005 Dec 28; 127(51):18212-21. PubMed ID: 16366574.
    Abstract:
    We demonstrate the use of luminescent quantum dots (QDs) conjugated to dye-labeled protein acceptors for nonradiative energy transfer in a multiplexed format. Two configurations were explored: (1) a single color QD interacting with multiple distinct acceptors and (2) multiple donor populations interacting with one type of acceptor. In both cases, we showed that simultaneous energy transfer between donors and proximal acceptors can be measured. However, data analysis was simpler for the configuration where multiple QD donors are used in conjunction with one acceptor. Steady-state fluorescence results were corroborated by time-resolved measurements where selective shortening of QD lifetime was measured only for populations that were selectively engaged in nonradiative energy transfer.
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