Resonant-enhanced localized surface plasmon resonance spectroscopy

Amanda J. Haes, George C Schatz, Richard P. Van Duyne

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The extinction maximum of the localized surface plasmon resonance (LSPR) of noble metal nanoparticles is highly dependent upon the refractive index of the nanoparticles' surrounding environment. In this study, the effect that molecular resonances have on the intensity, LSPR peak width, and LSPR shift of the LSPR of Ag nanoparticles is monitored. By systematically tuning the LSPR extinction maxima of Ag nanoparticles versus molecular resonances, new phenomena are revealed. First, the LSPR peak shift induced by a resonant molecule varies with wavelength. In most instances, the trends in this data qualitatively track with the Kramer's-Kronig transformation of the molecular resonance spectrum; however, the magnitude of the response is severely underestimated. This was verified from both experimental data and theoretical calculations. Because this phenomenon is revealed to be electronic transition dependent, it is hypothesized that the coupling between the molecular and plasmon resonances is responsible for this wavelength dependent observation. These results will have implications in molecular enhanced LSPR sensing and in the understanding of surface-enhanced spectroscopy.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume6370
DOIs
Publication statusPublished - 2006
EventNanomaterial Synthesis and Integration for Sensors, Electronics, Photonics, and Electro-Optics - Boston, MA, United States
Duration: Oct 1 2006Oct 4 2006

Other

OtherNanomaterial Synthesis and Integration for Sensors, Electronics, Photonics, and Electro-Optics
CountryUnited States
CityBoston, MA
Period10/1/0610/4/06

Fingerprint

Surface plasmon resonance
surface plasmon resonance
Spectroscopy
spectroscopy
nanoparticles
Nanoparticles
extinction
Wavelength
Metal nanoparticles
shift
Precious metals
noble metals
wavelengths
Refractive index
Tuning
tuning
refractivity
trends
Molecules
electronics

Keywords

  • Kramers - Kronig
  • Localized surface plasmon resonance
  • Nanoparticles
  • Resonant molecules
  • Sensing

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Haes, A. J., Schatz, G. C., & Van Duyne, R. P. (2006). Resonant-enhanced localized surface plasmon resonance spectroscopy. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 6370). [637013] https://doi.org/10.1117/12.690985

Resonant-enhanced localized surface plasmon resonance spectroscopy. / Haes, Amanda J.; Schatz, George C; Van Duyne, Richard P.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6370 2006. 637013.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Haes, AJ, Schatz, GC & Van Duyne, RP 2006, Resonant-enhanced localized surface plasmon resonance spectroscopy. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 6370, 637013, Nanomaterial Synthesis and Integration for Sensors, Electronics, Photonics, and Electro-Optics, Boston, MA, United States, 10/1/06. https://doi.org/10.1117/12.690985
Haes AJ, Schatz GC, Van Duyne RP. Resonant-enhanced localized surface plasmon resonance spectroscopy. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6370. 2006. 637013 https://doi.org/10.1117/12.690985
Haes, Amanda J. ; Schatz, George C ; Van Duyne, Richard P. / Resonant-enhanced localized surface plasmon resonance spectroscopy. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6370 2006.
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