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- W2002186962 abstract "A multiplexed solid-phase assay for the detection of nucleic acid hybridization was developed on the basis of a single color of immobilized CdSe/ZnS quantum dot (QD) as a donor in fluorescence resonance energy transfer (FRET). This work demonstrated that two channels of detection did not necessitate two different QD donors. Two probe oligonucleotides were coimmobilized on optical fibers modified with QDs, and a sandwich assay was used to associate the acceptor dyes with interfacial hybridization events without target labeling. FRET-sensitized acceptor emission provided an analytical signal that was concentration dependent down to 10 nM. Changes in the ratio of coimmobilized probe oligonucleotides were found to yield linear changes in the relative amounts of acceptor emission. These changes were compared to previous studies that used mixed films of two QD donors for two detection channels. The analysis indicated that probe dilution effects were primarily driven by changes in acceptor number density and that QD dilution effects or changes in mean donor-acceptor distance were secondary. Hybridization kinetics were found to be consistent between different ratios of coimmobilized probes, suggesting that hybridization in this type of system occurred via the accepted model for solid-phase hybridization, where adsorption and then diffusion at the solid interface drove hybridization." @default.
- W2002186962 created "2016-06-24" @default.
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- W2002186962 date "2009-11-25" @default.
- W2002186962 modified "2023-09-27" @default.
- W2002186962 title "Multiplexed Interfacial Transduction of Nucleic Acid Hybridization Using a Single Color of Immobilized Quantum Dot Donor and Two Acceptors in Fluorescence Resonance Energy Transfer" @default.
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- W2002186962 doi "https://doi.org/10.1021/ac902221d" @default.
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