Spectroscopy of a thin fullerene film on silver using sum frequency generation enhanced by visible surface plasmon–polaritons

Alieva, E. V.; Kuzik, L. A.; Yakovlev, V. A.; Knippels, G.M.H.; Meer, A. F. G. van der; Mattei, Giorgio

doi:10.1016/s0009-2614(99)00155-4

Cited by 10 publications

(6 citation statements)

References 16 publications

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“…(4) Coupling into surface plasmons in order to increase the SF signal is another strategy that may be useful for these systems. Indeed, very large SF signals have recently been observed for a thin fullerene film on silver using this approach …”

Section: Resultsmentioning

confidence: 99%

Total Internal Reflection Sum-Frequency Spectroscopy: A Strategy for Studying Molecular Adsorption on Metal Surfaces

2000

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Total internal reflection sum-frequency spectroscopy (TIR-SFS) is shown to be capable of detecting molecules adsorbed on ultrathin gold films (e10 nm) deposited on a sapphire prism. Octadecanethiol (ODT) and thiocyanate (SCN -) were used as probe molecules in order to assess the usefulness of the approach. For ODT adsorbed on 5-nm Au films, SF signal enhancements of over an order of magnitude were observed with TIR-SFS compared to the standard external reflection geometry. While TIR-SF spectra were obtained for ODT on 5-and 10-nm Au films, no molecular signals were detected for 20-nm Au films. The CtN stretch of SCNadsorbed on a 5-nm Au film was detected by TIR-SFS in the presence of either water or air. A theoretical model is presented to rationalize the different SF signal levels observed under various conditions. Future prospects of TIR-SFS for studying other oxide-supported metals are discussed, along with possible applications in the fields of heterogeneous catalysis and electrochemistry.

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Section: Resultsmentioning

confidence: 99%

Total Internal Reflection Sum-Frequency Spectroscopy: A Strategy for Studying Molecular Adsorption on Metal Surfaces

2000

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“…For example, Humbert et al found that the SFG signals of thiophenols grafted on gold nanospheres can be detected even if the surface coverage of thiophenol molecules is as low as 1%. , Wang et al significantly enhanced the monolayer SFG signals of p -mercaptobenzonitrile adsorbed on Au films by using shell-isolated nanoparticles as nanoantennas and found that the nonlinear coupling of SFG and DFG contributed to signal enhancement . The enhancement factor is reported to range from 10 to 10 5 . ,,,− However, a few very limited works have been reported to address the influence of plasmon local electric field on the enhancements in SFG intensity.…”

Section: Introductionmentioning

confidence: 99%

Evidence for a Local Field Effect in Surface Plasmon-Enhanced Sum Frequency Generation Vibrational Spectra

et al. 2022

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Surface plasmon-enhanced vibrational spectroscopy has been demonstrated to be an important highly sensitive diagnostic technique, but its enhanced mechanism is yet to be explored. In this study, we couple femtosecond sum frequency generation vibrational spectroscopy (SFG-VS) with surface plasmon generated by the excitation of localized gold nanorods/ nanoparticles and investigate the plasmonically enhanced factors (EFs) of SFG signals from poly(methyl methacrylate) films. Through monitoring the SFG intensity of carbonyl and ester methyl groups, we have established a correlation between EFs and the coupling of localized surface plasmon resonance with SFG and visible beams. It is found that the total enhanced factor is approximately proportional to the square of an enhanced factor of the SFG electromagnetic field and the fourth power of the enhanced factor of the visible electromagnetic field. The local field effect is roughly expressed to be the square of an enhanced factor of the visible electromagnetic field. This finding will help to guide the experimental design of plasmonenhanced SFG to drastically improve the detection sensitivity and thus provide greater insight into the ultrafast dynamics near plasmonic surfaces.

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“…• The coupling of the SFG process to the localized surface plasmon of nanoparticles or to surface plasmon polaritons in the visible or infrared ranges;…”

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confidence: 99%

Non-Uniqueness of Parameters Extracted from Resonant Second-Order Nonlinear Optical Spectroscopies

2009

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Phone: +33 1 69 15 32 75; Fax: +33 1 69 15 33 28 RECEIVED DATE (to be automatically inserted after your manuscript is accepted if required according to the journal that you are submitting your paper to) TITLE RUNNING HEAD Non uniqueness of parameters in NLO spectroscopiesAbstract Experimental data from second-order nonlinear optical spectroscopies (SFG, DFG, SHG) provide parameters relevant to the physical chemistry of interfaces and thin films. We show that there are in general 2 N or 2 N-1 equivalent sets of parameters to fit an experimental curve comprising N resonant features, of vibrational or electronic origin for example. We provide the algorithm to calculate these sets, among which the most appropriate has to be selected. The main consequences deal with the existence of "ghost resonances", the need of a critical analysis of fit results and the procedure to search for better sets of parameters coherent with applied constraints.

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Spectroscopy of a thin fullerene film on silver using sum frequency generation enhanced by visible surface plasmon–polaritons

Cited by 10 publications

References 16 publications

Total Internal Reflection Sum-Frequency Spectroscopy: A Strategy for Studying Molecular Adsorption on Metal Surfaces

Total Internal Reflection Sum-Frequency Spectroscopy: A Strategy for Studying Molecular Adsorption on Metal Surfaces

Evidence for a Local Field Effect in Surface Plasmon-Enhanced Sum Frequency Generation Vibrational Spectra

Non-Uniqueness of Parameters Extracted from Resonant Second-Order Nonlinear Optical Spectroscopies

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