Resonance Raman measurements

Raman resonance moderate with Raman resonance measurement no yes possibly... 

Raman and resonance Raman (RR) measurements of fullerene-like particles of MoS2 recently have been carried out (93). By using 488-nm excitation from an Ar ion laser light source, the two strongest Raman features in the Raman spectrum of the crystalline particles, at 383 and 408 cm-1, which correspond to the E g and Aig modes, respectively (see Table I), were found to be dominant also in IF-MoS2... 

Vander Meulen and Ressler (1980) measured the near-lR spectra of proteins in aqueous solution and compared them with the spectra of protein films. Brown et al. (1983) reported multiple internal reflectance spectra of hydrated films of carbonmonoxy and oxy forms of hemoglobin. This work was extended by Findsen et al. (1986), who, using resonance Raman scattering, measured the effects of hydration on the equilibrium and dynamic properties of hemoglobin and its carbonmonoxy complex. There was a substantial effect of hydration on the CO vibration, but no significant effect on the vibrational properties of the heme protein. 

In the past decade a great deal of work has been done pursuing the dielectric properties of materials through the sub-millimetre waveband and into the traditional dom of spectroscopy. The rotary movements of molecules are studied through i.r. and Raman spectroscopy as well as by direct dielectric and magnetic-resonance measurements. ... 

Studies of the nonaqueous chemistry of xenon fluorides have also been initiated. Whereas xenon tetrafluoride is only sparingly soluble in hydrogen fluoride, xenon difluoride and xenon hexafluoride are very soluble indeed. Electrical conductivity, absorption and Raman spectroscopy, and nuclear magnetic resonance measurements have been employed in studying these solutions. The observations have been interpreted in terms of dissolution without appreciable dissociation for xenon difluoride and xenon tetrafluoride, and dissolution with extensive ionization for xenon hexafluoride. The extensive solubility and ionization of xenon hexafluoride contrast strikingly with the behavior of other hexafluorides (e.g., uranium hexafluoride). 

Beginning in the mid-thirties, the IR and Raman spectroscopic techniques achieved major importance. Still later, neutron diffraction and nuclear magnetic resonance measurements became available to describe the positions of hydrogen atoms, thus providing a valuable supplement to x-ray studies. )... 

This review article is concerned with the structure, bonding, and dynamic processes of water molecules in crystalline solid hydrates. The most important experimental techniques in this field are structural analyses by both X-ray and neutron diffraction as well as infrared and Raman spectroscopic measurements. However, nuclear magnetic resonance, inelastic and quasi elastic neutron scattering, and certain less frequently used techniques, such as nuclear quadrupole resonance, electron paramagnetic resonance, and conductivity and permittivity measurements, are also relevant to solid hydrate research. 

Direct methods for studying the structure of molten salts are X-ray and neutron diffraction analyses, infrared and Raman spectroscopy, NMR (nuclear magnetic resonance) measurement, and also very recently, XAFS (X-ray Absorption Fine Structure) measurement in melts, were developed. Fiowever, the most frequently used direct methods are X-ray and XAFS measurements, Raman spectroscopy, and NMR measurements. Therefore these three methods of direct investigation will be briefly described here. 

In support of the mechanism of R, accumulation of intermediates during the carboxypeptidase A-catalyzed ester hydrolysis has been reported (57, 58), and several lines of evidence were consistent with the nucleophilic attack of Glu(270) leading to the anhydride intermediate (59, 60). Other pieces of evidence have been presented for the esterase action of carboxypeptidase A in support of the anhydride mechanism, such as resonance Raman spectroscopic measurements or trapping of the anhydride intermediate with a radioactive... 

This volume also contains one of the first reviews of the Surface Enhancement of Infrared Spectra by Professor Peter Griffiths, one of the leading pioneers in the area of IR Spectroscopy over the last 50 years. There is a chapter on the analytical measurement of salt concentrations in water using Raman spectroscopy by Dr Marc Fontana (and colleagues), and a review of the study of metal complexes using Raman, Resonance Raman and stimulated Raman methods by Professor John McGarvey (and colleagues). 

Calculations of eight frontier molecular orbitals for D2h dimers 9 = 90°), and six frontier orbitals for D2 dimers were carried out from the four frontier orbitals of the monomers. A simplified description of the frontier orbitals evolution is reproduced in Figure 13.22, along with a transition dipole moment representation in the orthogonal and oblique bis-porphyrins. Raman resonance spectroscopy of the excited states shows that some transitions involve charge transfer between the two subunits, and that the contribution of charge transfer increases with the degree of coplanarity of the dimers. This is consistent with previous electric dipole measurements in the excited states. 

Vibrational spectroscopy is a powerful and unique technique to study the structure and microenvironment of pigments in the RC and their structural changes during the photochemistry. In the case of Raman spectroscopy, the resonance Raman effect selectively enhances the vibrational spectra of pigments even in the protein complexes. For example, the excitation with the 363 8 nm laser line gives a vibrational spectrum of bacterial RCs, to which dimeric BChl, accessory BChl and BPhe equally contribute but the protein moiety does not. Furthermore, by taking a difference of the resonance Raman spectra measured under different conditions, the vibrational bands arising only from the BChl dimer in the RC have been successfully obtained [1]. 

Angle-resolved depolarized Resonance Raman scattering measured by excitation of pigments within their absorption bands also yield the order parameters and of the pigments in the membranes (5). 

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