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Watching a single fluorophore molecule walk into a plasmonic hotspot

Plasmonic nanoantennas allow for enhancing the spontaneous emission, altering the emission polarization, and shaping the radiation pattern of quantum emitters. A critical challenge for the experimental realizations is positioning a single emitter into the hotspot of a plasmonic antenna with nanoscal...

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Bibliographic Details
Main Authors: Xin, Ling (Author) , Urban, Maximilian J. (Author) , Liu, Na (Author)
Format: Article (Journal)
Language:English
Published: March 19, 2019
In: ACS photonics
Year: 2019, Volume: 6, Issue: 4, Pages: 985-993
ISSN:2330-4022
DOI:10.1021/acsphotonics.8b01737
Online Access:Verlag, Volltext: https://doi.org/10.1021/acsphotonics.8b01737
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Author Notes:Ling Xin, Mo Lu, Steffen Both, Markus Pfeiffer, Maximilian J. Urban, Chao Zhou, Hao Yan, Thomas Weiss, Na Liu, and Klas Lindfors
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Summary:Plasmonic nanoantennas allow for enhancing the spontaneous emission, altering the emission polarization, and shaping the radiation pattern of quantum emitters. A critical challenge for the experimental realizations is positioning a single emitter into the hotspot of a plasmonic antenna with nanoscale accuracy. We demonstrate a dynamic light–matter interaction nanosystem enabled by the DNA origami technique. A single fluorophore molecule can autonomously and unidirectionally walk into the hotspot of a plasmonic nanoantenna along a designated origami track. Successive fluorescence intensity increase and lifetime reduction are in situ monitored using single-molecule fluorescence spectroscopy, while the fluorophore walker gradually approaches and eventually enters the plasmonic hotspot. Our scheme offers a dynamic platform, which can be used to develop functional materials, investigate intriguing light–matter interaction phenomena, and serve as prototype system for examining theoretical models.
Item Description:Gesehen am 16.05.2019
Physical Description:Online Resource
ISSN:2330-4022
DOI:10.1021/acsphotonics.8b01737

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