Guyot-Sionnest

Blanton S A, Hines M A and Guyot-Sionnest P 1996 Photoluminescence wandering in single CdSe nanocrystals App/. Phys. Lett. 69 3905-7... 

Wehrenberg BL, Guyot-Sionnest P (2003) Electron and hole injection in PbSe quantum dot films. J Am Chem Soc 125 7806-7807... 

Hines MA, Guyot-Sionnest P (1996) Synthesis and characterization of strongly luminescing ZnS-capped CdSe nanocrystals. J Phys Chem 100 468-471... 

In the earliest SFG experiments [Tadjeddine, 2000 Guyot-Sionnest et al., 1987 Hunt et al., 1987 Zhu et al., 1987], a first-generation data acquisition method was used, and, because of the limited signal-to-noise ratios, IR attenuation by the electrolyte solution was a substantial handicap. So, in earlier SFG studies, as in IRAS studies, measurements were performed with the electrode pressed directly against the optical window [Baldelli et al., 1999 Dederichs et al., 2000]. With the in-contact geometry, the electrolyte was a thin film of uncertain and variable depth, probably of the order of 1 p.m. However, the thin nonuniform electrolyte layers can strongly distort the potential/coverage relationship and hinder the ability to study fast kinetics. 

Tadjeddine and co-workers have used SFG [Guyot-Sionnest and Tadjeddine, 1990 Eisenthal, 1992 Richmond, 2002 Vidal et al., 2002, 2004, 2005] to study the adsorbed CO produced from a variety of solution species, including methanol [Vidal et al., 2002, 2005]. With BB-SFG, we studied the electrochemical kinetics of methanol chemisorption as surface CO, as shown in Fig. 12.13. We used apolycrystal-line Pt electrode and 0.1 M H2SO4 electrolyte with 0.1 M methanol. Figure 12.13a-d characterize the potential-dependent SFG spectra obtained under the voltammetric... 

Guyot-Sionnest P. 2005. The mature years of sum-frequency generation ate ahead. Surf Sci 585 1-2. 

Guyot-Sionnest P, Hunt JH, Shen YR. 1987. Sum-fiequency vibrational spectroscopy of a Langmuir film Study of molecular orientation of a two-dimensional system. Phys Rev Lett 59 1597-1600. 

Guyot-Sionnest P, Tadjeddine A. 1990. Spectroscopic investigations of adsorbates at the metal electrolyte interface using sum frequency generation. Chem Phys Lett 172 341-345. 

Hunt JH, Guyot-Sionnest P, Shen YR. 1987. Observation of C H stretch vibrations of mono-layers of molecules. Optical-sum frequency generation. Chem Phys Lett 133 189-192. 

Yu, D. Wang, C. Guyot-Sionnest, P. 2003. w-Type conducting CdSe nanocrystal solids. Science 300 1277-1280. 

Guyot-Sionnest P (2005) Intraband Spectroscopy and Semiconductor Nanocrystals. 118 59-77... 

Hilmi, A., and J. H. T. Luong. Electrochemical detectors prepared by electroless deposition for microfabricated electrophoresis chips. Anal. Chem. 72, 4677-4682 (2000b). Hines, M. A. and P. Guyot-Sionnest. Synthesis and characterization of strongly luminescing ZnS-capped CdSe nanocrystals. J. Phys. Chem. 100, 468-471 (1996). 

Guyot-Sionnest and Tadjeddine have published related work on silver electrode surfaces [128]. The work was performed on silver evaporated films which are presumed to be of predominantly (111) orientation and the data was collected at a fixed and undefined crystal orientation. They also find that there is a distinct difference in the potential dependence in the overall magnitude of the SH response under unspecified polarization conditions for their Ag samples at 1064 nm and 532 nm incident wavelengths. They conclude that the response is free-electron in nature at the longer wavelength but that the nonlinear susceptibility of the d-elec-trons is dominant for the shorter wavelengths [128]. 

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