Long-range plasmophore rulers

Gilles R. Bourret, Tuncay Ozel, Martin Blaber, Chad M. Shade, George C Schatz*, Chad A Mirkin

*Corresponding author for this work

Research output: Contribution to journalArticle

15 Scopus citations

Abstract

Using on-wire lithography, we studied the emission properties of nanostructures made of a polythiophene disk separated by fixed nanoscopic distances from a plasmonic gold nanorod. The intense plasmonic field generated by the nanorod modifies the shape of the polythiophene emission spectrum, and the strong distance dependence of this modulation forms the basis for a new type of "plasmophore ruler". Simulations using the discrete dipole approximation (DDA) quantitatively support our experimental results. Importantly, this plasmophore ruler is independent of signal intensity and is effective up to 100 nm, which is more than two times larger than any reported value for rulers based on photoluminescence processes.

Original languageEnglish (US)
Pages (from-to)2270-2275
Number of pages6
JournalNano Letters
Volume13
Issue number5
DOIs
StatePublished - May 8 2013

Keywords

  • Plasmophore
  • conjugated polymer
  • gold nanorod
  • localized surface plasmon
  • on-wire lithography
  • ruler

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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  • Cite this

    Bourret, G. R., Ozel, T., Blaber, M., Shade, C. M., Schatz, G. C., & Mirkin, C. A. (2013). Long-range plasmophore rulers. Nano Letters, 13(5), 2270-2275. https://doi.org/10.1021/nl400884j