Long-range plasmophore rulers

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

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


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
Pages (from-to)2270-2275
Number of pages6
JournalNano letters
Issue number5
Publication statusPublished - May 8 2013


  • 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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