期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 133, 期 12, 页码 4193-4195出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja1105464
关键词
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资金
- DFG [Ti329/5-1]
- Center for Nano-Science Munich
- excellence cluster Nanosystems Initiative Munich
- Elite Network of Bavaria
Fluorescence resonance energy transfer (FRET) represents a mechanism to transport light energy at the nanoscale, as exemplified by nature's light-harvesting complexes. Here we used DNA origami to arrange fluorophores that transport excited-state energy from an input dye to an output dye. We demonstrate that energy-transfer paths can be controlled on the single-molecule level by the presence of a jumper dye that directs the excited-state energy either to a red or to an IR output dye. We used single-molecule four-color FRET with alternating laser excitation to sort subpopulations and to visualize the control of energy transfer.
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