Watching a Single Fluorophore Molecule Walk into a Plasmonic Hotspot

Ling Xin, Mo Lu, Steffen Both, Markus Pfeiffer, Maximilian J. Urban, Chao Zhou, Hao Yan, Thomas Weiss, Na Liu, Klas Lindfors

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
Pages (from-to)985-993
Number of pages9
JournalACS Photonics
Volume6
Issue number4
DOIs
Publication statusPublished - Apr 17 2019

Fingerprint

Fluorophores
emitters
Nanosystems
Light
fluorescence
Molecules
Functional materials
Spontaneous emission
Fluorescence Spectrometry
Fluorescence spectroscopy
spontaneous emission
positioning
molecules
DNA
Theoretical Models
antennas
deoxyribonucleic acid
platforms
Fluorescence
prototypes

Keywords

  • DNA Origami
  • Fluorescence
  • Hotspots
  • Nanoantennas
  • Plasmonics
  • Single molecule spectroscopy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biotechnology
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Cite this

Xin, L., Lu, M., Both, S., Pfeiffer, M., Urban, M. J., Zhou, C., ... Lindfors, K. (2019). Watching a Single Fluorophore Molecule Walk into a Plasmonic Hotspot. ACS Photonics, 6(4), 985-993. https://doi.org/10.1021/acsphotonics.8b01737

Watching a Single Fluorophore Molecule Walk into a Plasmonic Hotspot. / Xin, Ling; Lu, Mo; Both, Steffen; Pfeiffer, Markus; Urban, Maximilian J.; Zhou, Chao; Yan, Hao; Weiss, Thomas; Liu, Na; Lindfors, Klas.

In: ACS Photonics, Vol. 6, No. 4, 17.04.2019, p. 985-993.

Research output: Contribution to journalArticle

Xin, L, Lu, M, Both, S, Pfeiffer, M, Urban, MJ, Zhou, C, Yan, H, Weiss, T, Liu, N & Lindfors, K 2019, 'Watching a Single Fluorophore Molecule Walk into a Plasmonic Hotspot', ACS Photonics, vol. 6, no. 4, pp. 985-993. https://doi.org/10.1021/acsphotonics.8b01737
Xin L, Lu M, Both S, Pfeiffer M, Urban MJ, Zhou C et al. Watching a Single Fluorophore Molecule Walk into a Plasmonic Hotspot. ACS Photonics. 2019 Apr 17;6(4):985-993. https://doi.org/10.1021/acsphotonics.8b01737
Xin, Ling ; Lu, Mo ; Both, Steffen ; Pfeiffer, Markus ; Urban, Maximilian J. ; Zhou, Chao ; Yan, Hao ; Weiss, Thomas ; Liu, Na ; Lindfors, Klas. / Watching a Single Fluorophore Molecule Walk into a Plasmonic Hotspot. In: ACS Photonics. 2019 ; Vol. 6, No. 4. pp. 985-993.
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