Raman spectroscopy comparison

Fe, Sb, Al, Phonon modes by Raman spectroscopy, comparison with [74]... 

In the present investigation, the interaction ot vanadium oxide with dif-ferent alumina phases (7, 6-6, and a) is examined with Raman spectroscopy. Comparison ot the Raman spectra ot the supported vanadium oxide catalysts with those obtained -from vanadium oxide reference compounds allows for the structural assignment of these supported species. The present Raman data demonstrate that the molecular structures of the surface vanadium oxide phases are significantly influenced by the presence of surface impurities on the alumina supports and this overshadows the influence, if any, of the alumina substrate phase. 

Johnson A E and Myers ABA 1996 A comparison of time- and frequency-domain resonance Raman spectroscopy in triiodide J. Cham. Phys. 104 2497-507... 

Ideally, a mass spectmm contains a molecular ion, corresponding to the molecular mass of the analyte, as well as stmcturaHy significant fragment ions which allow either the direct deterrnination of stmcture or a comparison to Hbraries of spectra of known compounds. Mass spectrometry (ms) is unique in its abiUty to determine direcdy the molecular mass of a sample. Other techniques such as nuclear magnetic resonance (nmr) and infrared spectroscopy give stmctural information from which the molecular mass may be inferred (see Infrared technology and raman spectroscopy Magnetic spin resonance). 

Ruban, A.V., Robert, B., and Horton, P. 1995. Resonance Raman spectroscopy of photosystem B light-harvesting complex of green plants. A comparison of trimeric and aggregated states. Biochemistry 34 2333-2337. 

Hipps KW, Keder JK (1983) A direct comparison of surface Raman spectroscopy and inelastic electron tunneling spectroscopy. J Phys Chem 87 3187-3189... 

Some characteristics of, and comparisons between, surface-enhanced Raman spectroscopy (SERS) and infrared reflection-absorption spectroscopy (IRRAS) for examining reactive as well as stable electrochemical adsorbates are illustrated by means of selected recent results from our laboratory. The differences in vibrational selection rules for surface Raman and infrared spectroscopy are discussed for the case of azide adsorbed on silver, and used to distinguish between "flat" and "end-on" surface orientations. Vibrational band intensity-coverage relationships are briefly considered for some other systems that are unlikely to involve coverage-induced reorientation. 

Rehman, I., Smith, R., Flench, L. L., and Bonfield, W. (1995). Structural evaluation of human and sheep bone and comparison with synthetic hydroxyapatite by FT-Raman spectroscopy. Journal of Biomedical Materials Research 29 1287-1294. 

Gierlinger, N., Hansmann, C., Roder, T., Sixta, H., Gindl, W. and Wimmer, R. (2005). Comparison of UV and confocal Raman spectroscopy to measure the melamine - formaldehyde resin content within ceU walls of impregnated spruce wood. Holzforschung, 59(2), 210-213. 

Liao, Z.H., Orendorff, C.J., Sander, L.C., and Pemberton, J.E., Structure-function relationships in high-density docosylsUane bonded stationary phases by Raman spectroscopy and comparison to octadecylsUane bonded stationary phases. Anal. Chem., 78,5813, 2006. 

P. de Peinder, M.J. Vredenbregt, T. Visser and D. de Kaste, Detection of Lipitor counterfeits A comparison of NIR and Raman spectroscopy in combination with chemometrics, J. Pharm. Biomed. Anal., 47, 688-694 (2008). 

C.M. Deeley, R.A. Spragg and T.L.A. Threlfall, Comparison of Fourier transform infrared and near-infrared Fourier transform Raman spectroscopy for quantitative measurements an application, Spectrochim. Acta, Part A, 47A, 1217-1223 (1991). 

The luminescence of diamonds is related to various defects in its structure. Almost always, luminescence centers in diamonds are related to N atoms. It is logical, because the atomic radii of C and N are nearly equal (approximately 0.77 A). Luminescence spectroscopy has proven to be the most widely used method in studies of diamonds even in comparison with optical absorption, ESR, IR and Raman spectroscopies. Himdreds of spectra have been obtained, fluorescence characteristics enter into diamond quality gemological certificates, a wide range of electronic and laser applications are based on diamond optical properties in excited states nitrogen center aggregation is controlled by the residence time of diamond in the mantle, distinction between natural... 

A spectroscopic study of Claus blue, with comparisons to the much better characterized (180) ion [Rh2(0H)2(H20)n(/u,-02)]3+, was thus undertaken (181). By the use of UV-vis, ESR, and IR/Raman spectroscopies, as well as magnetic susceptibility measurements and voltamme-tric studies, it was determined that Claus blue solutions actually contain superoxo-dirhodium complexes, and not RhO2- ions. The su-peroxo bridge does not, however, derive from dioxygen, but from oxidation of coordinated hydroxide. Finally, Claus blue solutions were demonstrated to be good starting materials for the preparation of superoxo-dirhodium carboxylate complexes, which could be isolated and characterized. 

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