Sum-frequency generation vibrational spectroscopy

Lagutchev A, Hambir SA, Dlott DD. 2007. Nonresonant background suppression in broadband vibrational sum-frequency generation spectroscopy. J Phys Chem C 111 ... 

Lu GQ, Lagutchev A, Dlott DD, Wieckowski A. 2005. Quantitative vibrational sum-frequency generation spectroscopy of thin layer electrochemistry CO on a Pt electrode. Surf Sci 585 3-16. 

Kim et al. [22] have used vibrational sum-frequency generation spectroscopy (SFG) to characterize the surfaces of (3-HMX single crystals, as well as the interface between HMX and the copolymer Estane. SFG is a nonlinear vibrational spectroscopic technique, related to optical parametric amplification that selectively probes vibrational transitions at surfaces and interfaces. Compared with bulk HMX, the surface vibrational features are blueshifted and observed splittings are larger. The technique may have application to detection of explosive residues on surfaces. 

Ma, G., Liu, D., and Allen, H.C., Piperidine adsorption on hydrated a-alumina (0001) surface studied by vibrational sum frequency generation spectroscopy, Langmuir, 20, 11620, 2004. 

A. Morita, T. Ishiyama, Recent progress in theoretical analysis of vibrational sum frequency generation spectroscopy. PCCP 10(38), 5801-5816 (2008)... 

A. M. Jubb, W. Hua, and H. C. Allen, Annu. Rev. Phy. Chem., 63, 107 (2012). Environmental Chemistry at Vapor/Water Interfaces Insights from Vibrational Sum Frequency Generation Spectroscopy. 

Liu D, Ma G, AUen HC (2005) Adsorption of 4-picoline and piperidine to the hydrated Si02 surface probing the surface acidity with vibrational sum frequency generation spectroscopy. Environ Sci Technol 39(7) 2025-2032. doi 10.1021/es0482280... 

Rupprechter G (2001) Surface vibrational spectroscopy from ultrahigh vacuum to atmospheric pressure Adsorption and reactions on single crystals and nanoparticle model catalysts monitored by sum frequency generation spectroscopy. Phys Chem Chem Phys 3 4621... 

Morkel M, Unterhalt H, Kliiner T, Rupprechter G, Freund H-J (2005) Interpreting intensities in vibrational sum frequency generation (SFG) spectroscopy CO adsorption on Pd surfaces. Surf Sci 586 146... 

In-situ vibrational spectroscopy has long been used to study the electrified solid/ liquid interface. By using the information given by peak position, width, and lifetime, vibrational spectroscopy can provide the chemical identity of the adsorbate, an estimation of surface coverage, and the orientation and even dynamics of molecules at the electrode. Three different types of vibrational spectroscopy are relevant to the solid/liquid interface. The first two of these, Raman and infrared spectroscopy, are thoroughly discussed in this book. A third technique successfully used to probe the Uquid/soUd electrochemical interface is vibrational sum frequency generation (SFG). SFG was developed as a surface probe some 20 years ago [1], and its use was extended to the electrochemical interface by Tadjeddine over a decade ago [2]. Several reviews examining the use of SFG in non-electrochemical environments exist [3-11]. Tadjeddine wrote two reviews on the application of SFG to electrochemical problems [12, 13). This chapter updates the Tadjeddine work and focuses on the promise and problems of state-of-the-art electrochemical SFG. 

Presented here is a brief review of the vibrational spectroscopic techniques used to characterise ionic liquids on surfaces. Specifically, this review includes results obtained from sum-frequency generation spectroscopy (SFG), infrared reflection-absorption spectroscopy (IRAS), surface-enhanced Raman scattering (SERS) and high-resolution electron energy loss spectroscopy (HREELS). 

The use of IR spectroscopy of adsorbed CO for the characterisation of supported metal catalysts takes advantage of the many surface science studies performed on metal monocrystal faces. In fact, the technique of low temperature CO adsorption followed by vibrational spectroscopies (such as IRAS, high resolution EELS (HREELS), or, more recently, sum frequency generation spectroscopy (SEG)) represents a largely used technique in metal surface science studies. These techniques give very precise reference data for catalyst characterisation and allow good comparison among the respective results. 

Shen Y R 1998 Sum frequency generation for vibrational spectroscopy applications to water interfaces and films of water and ice Solid State Commun. 108 399... 

Zhu X D, Suhr H and Shen Y R 1987 Surface vibrational spectroscopy by infrared-visible sum frequency generation Phys. Rev. B 35 3047-59... 

Buck, M. and Himmelhaus, M. (2001) Vibrational spectroscopy of interfaces by infrared-visible sum frequency generation. J. Vac. Sci. Technol. A, 19, 2717-2736. 

J. Phys. Chem. B, 106, 5143-5154. Somorjai, G. A. and Rupprechter, G. (1999) Molecular studies of catalytic reactions on crystal surfaces at high pressures and high temperatures by infrared-visible sum frequency generation (SFG) surface vibrational spectroscopy. J. Phys. Chem., 103, 1623-1638. 

Figure 7. Total internal reflection sum frequency generation (TIR-SFG) vibrational spectroscopy of high-pressure room temperature adsorption of carbon monoxide on PVP-protected Pt cube monolayers and calcined (373 K, 3h) monolayers [27], The infrared spectra demonstrate CO is adsorbed at atop sites, but is considerably red-shifted on the PVP-protected Pt cubes. After calcination, the atop frequency blueshifts to 2085 cm in good agreement with CO adsorption on Pt(l 0 0) at high coverages [28], (Reprinted from Ref [27], 2006, with permission from American Chemical Society.)...

Bonn M, Hess C, Miners JH, Heinz TP, Bakker HJ, Cho M. 2001. Novel surface vibrational spectroscopy Infrared-infrared-visible sum-frequency generation. Phys Rev Lett 86 1566-1569. 

Chen Z, Shen YR, Somoijai GA. 2002. Studies of polymer surfaces by sum frequency generation vibrational spectroscopy. Annu Rev Phys Chem 53 437-465. 

Chou KC, Kim J, Baldelli S, Somorjai GA. 2003a. Vibrational spectroscopy of carbon monoxide, acetonitrile, and phenylalanine adsorbed on liquid vertical bar electrode interfaces by sum frequency generation. J Electroanal Chem 554 253-263. 

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