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Plasmonic nanohybrid with ultrasmall Ag nanoparticles and fluorescent dyes.

Authors
  • Rainò, Gabriele
  • Stöferle, Thilo
  • Park, Chanhee
  • Kim, Ho-Cheol
  • Topuria, Teya
  • Rice, Philip M
  • Chin, In-Joo
  • Miller, Robert D
  • Mahrt, Rainer F
Type
Published Article
Journal
ACS Nano
Publisher
American Chemical Society
Publication Date
May 24, 2011
Volume
5
Issue
5
Pages
3536–3541
Identifiers
DOI: 10.1021/nn102717z
PMID: 21534536
Source
Medline
License
Unknown

Abstract

We investigate a hybrid nanocomposite combining fluorescent dyes and ultrasmall (<3 nm) silver nanocrystals in a block copolymer micelle. Although the metal nanoparticles are significantly smaller than the electromagnetic skin depth, we observe a modification of the exciton lifetime and the nonradiative energy transfer among the dyes. This behavior is absent in a control experiment with dyes whose energetic levels are far from the plasmonic resonance, establishing the plasmonic nature of the interaction.

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