Abstract
We show that direct coupling of a dye-labelled DNA (acceptor) to a quantum dot (QD) donor significantly reduces the donor-acceptor distance and improves the FRET efficiency: a highly efficient FRET (approximately 88%) at a low acceptor-to-donor ratio of 2 has been achieved at the single-molecule level.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Cadmium Compounds / chemistry
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Coloring Agents / chemistry*
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DNA / chemistry*
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Fluorescence Resonance Energy Transfer / methods*
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Quantum Dots*
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Selenium Compounds / chemistry
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Sensitivity and Specificity
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Structure-Activity Relationship
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Sulfhydryl Compounds / chemistry
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Sulfides / chemistry
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Time Factors
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Zinc Compounds / chemistry
Substances
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Cadmium Compounds
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Coloring Agents
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Selenium Compounds
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Sulfhydryl Compounds
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Sulfides
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Zinc Compounds
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DNA
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cadmium selenide
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zinc sulfide