Active molecular plasmonics: Controlling plasmon resonances with molecular switches

Yue Bing Zheng, Ying Wei Yang, Lasse Jensen, Lei Fang, Bala Krishna Juluri, Amar H. Flood, Paul S. Weiss, J. Fraser Stoddart, Tony Jun Huang

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Abstract

A gold nanodisk array, coated with bistable, redox-controllable [2]rotaxane molecules, when exposed to chemical oxidants and reductants, undergoes switching of its plasmonic properties reversibly. By contrast, (i) bare gold nanodisks and (ii) disks coated with a redox-active, but mechanically inert, control compound do not display surface-plasmon-based switching. Along with calculations based on time-dependent density functional theory, these experimental observations suggest that the nanoscale movements within surface-bound "molecular machines" can be used as the active components in plasmonic devices.

Original languageEnglish (US)
Pages (from-to)819-825
Number of pages7
JournalNano letters
Volume9
Issue number2
DOIs
StatePublished - Feb 11 2009

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All Science Journal Classification (ASJC) codes

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

Cite this

Zheng, Y. B., Yang, Y. W., Jensen, L., Fang, L., Juluri, B. K., Flood, A. H., Weiss, P. S., Stoddart, J. F., & Huang, T. J. (2009). Active molecular plasmonics: Controlling plasmon resonances with molecular switches. Nano letters, 9(2), 819-825. https://doi.org/10.1021/n1803539g