Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 56, Issue 13, Pages 3566-3569Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201612389
Keywords
electrochemistry; enhanced fluorescence; gold nanorods; methylene blue; single-molecule studies
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Funding
- NWO, the Netherlands Organization for Scientific Research
- China Scholarship Council
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Redox reactions are central to energy conversion and life metabolism. Herein we present electrochemical measurements with fluorescent readout of the redox-sensitive dye Methylene Blue (MB), at the single-molecule (SM) level. To overcome the low fluorescence quantum yield of MB we enhanced fluorescence by using individual gold nanorods to achieve the required sensitivity. By measuring the same molecule at different electrochemical potentials we determined the mid-point potential of each single molecule through its redox-induced fluorescence blinking dynamics.
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