Surface-enhanced resonance Raman scattering and background light emission coupled with plasmon of single Ag nanoaggregates

The Journal of Chemical Physics
Tamitake ItohYukihiro Ozaki

Abstract

We investigated the optical properties of isolated single aggregates of Ag nanoparticles (Ag nanoaggregates) on which rhodamine 6G molecules were adsorbed to reveal experimentally a correlation among plasmon resonance Rayleigh scattering, surface-enhanced resonance Raman scattering (SERRS), and its background light emission. From the lack of excitation-laser energy dependence of background emission maxima we concluded that the background emission is luminescence, not Raman scattering. The polarization dependence of both SERRS and background emission was the same as that of the lowest-energy plasmon resonance maxima, which is associated with a longitudinal plasmon. From the common polarization dependence, we identified that the lowest-energy plasmon is coupled with both SERRS and background emission. In addition, we revealed that the lowest-energy plasmon with a higher quality factor (Q factor) yields larger SERRS and background emission intensity. Also, we identified that the Q factor dependence of the SERRS intensity was similar to that of the background emission intensity. This similarity directly supported us to demonstrate an enhancement of both SERRS and background emission by coupling with a common plasmon radiative mode.

References

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Citations

Jun 13, 2008·Analytical and Bioanalytical Chemistry·Vasudevanpillai BijuMitsuru Ishikawa
Apr 23, 2009·Analytical and Bioanalytical Chemistry·Mohammad Kamal HossainYukihiro Ozaki
Aug 20, 2009·Physical Chemistry Chemical Physics : PCCP·Mohammad Kamal HossainYukihiro Ozaki
Mar 26, 2013·Physical Chemistry Chemical Physics : PCCP·Hae Mi LeeYung Doug Suh
Nov 8, 2014·Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology·Ryan T Hill
Jan 27, 2015·Physical Chemistry Chemical Physics : PCCP·Darya Radziuk, Helmuth Moehwald
Jan 13, 2015·Physical Chemistry Chemical Physics : PCCP·Mohammad Kamal HossainYukihiro Ozaki
Apr 24, 2013·Angewandte Chemie·Thomas SchmidRenato Zenobi
Aug 16, 2008·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Meikun Fan, Alexandre G Brolo
Jan 18, 2018·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Yasutaka KitahamaToshiaki Suzuki
Feb 10, 2009·Nano Letters·James A HutchisonHiroshi Uji-I
Dec 5, 2008·Journal of the American Chemical Society·Manfred J WalterJohn M Lupton
Sep 14, 2006·Nano Letters·Jeremie MargueritatLucien Saviot
Aug 20, 2010·Nano Letters·Sarah M Stranahan, Katherine A Willets
Jul 20, 2021·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Mohammad Kamal Hossain, Qasem Ahmed Drmosh
Jul 24, 2020·ACS Applied Materials & Interfaces·Yanfeng WangYiping Zhao

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