Raman spectroscopy studies

V. Domnich, Y. Gogotsi, M. Trenary, and T. Tanaka, Nanoindentation and Raman Spectroscopy Studies of Boron Carbide , Appl. Phys. Lett., 81, 3783 (2002). 

K. Shen, S. Curran, H. Xu, S. Rogelj, Y. Jiang, J. Dewald, and T. Pietrass, Single-walled carbon nanotube purification, pelletization, and surfactant-assisted dispersion a combined term and resonant micro-Raman spectroscopy study. J. Phys. Chem. B 109, 4455 1463 (2005). 

Rao R, Lee J, Lu Q, Keskar G, Freedman KO, Floyd WC, Rao AM, Ke PC (2004) Single-molecule fluorescence microscopy and Raman spectroscopy studies of RNA bound carbon nanotubes. Appl. Phys. Lett. 85 4228 1230. 

Room temperature ILs have been the object of several Raman spectroscopy studies but often ILs emit intensive broad fluorescence. In our own experiments, the use of visible laser light (green 514.5 nm or red 784 nm) resulted in strong fluorescence [29,46]. Similar observations have been reported for many IL sysfems. Our experimental spectra needed to be obtained by use of a 1064 nm near-IR exciting source (Nd-YAC laser at 100 mW of power). The scattered light was filtered and collected in a Bruker... 

Fujisawa, T., Fukuda, M., Terazima, M., and Kimura, Y, Raman spectroscopy study on solvation of diphenylcyclopropenone and phenol blue in room temperature ionic liquids, /. Phys. Chem. A, 110, 6164-6172, 2006. 

An IR and Raman spectroscopy study of NH4Ag(SCN)2 has been interpreted in terms of a superposition of the spectra of the SCN- ion and the AgSCN molecule, in agreement with the above structural data. 

Figure 9.13 Spectroelectrochemical cell for Raman spectroscopy studies using electrode emersion. (A) Top view of cell, micrometer adjusts cell path length (B) front view with 90° rotation of reference electrode position. [From J.E. Pemberton and R.L. Sobocinski, J. Electroanal. Chern. 575 157 (1991). Copyright 1991 Elsevier Sequoia S.A., Lausanne.]...

Transannular cation radicals with the intramolecular sulfur-sulfur bond of the 2ct-1ct type generated from medium-ring disulfides like 1,5-dithiacyclooctane are an exception in terms of their stability, although they are not resistant to water (Musker 1980). ESR and resonance Raman spectroscopy studies revealed the existence of the 1,5-dithia-cyclooctane cation radical, with substantial bonding between the sulfur atoms (T. Brown et al. 1981 Tamaoki et al. 1989). Computations confirmed this statement and pointed out that the chair-boat conformer has the lowest energy as compared to other possible conformers (Stowasser et al. 1999). 

Cortez, G.G. Banares, M.A. A Raman Spectroscopy Study of Alumina-Supported Vanadium Oxide Catalyst During Propane Oxidative Dehydrogenation with Online Activity Measurement /. Catal. 2002, 209, 197-201. 

Table 12.2 summarizes these and other selected Raman spectroscopy studies. Most published accounts utilize the same spectral range ( 300-l 800 cm-1), and thus specific ranges are not specified here. 

For IR and Raman spectroscopy studies there is a clear limitation when large amounts of carbon black are applied, as is common practice in technical rubber goods. In that sense the applicability of Raman and IR spectroscopy seems to be surpassed by solid-state 13C... 

Balabin, R. M. Enthalpy difference between conformations of normal alkanes Raman spectroscopy study of w-pentane and w-butane, J. Phys. Chem. A 2009,113, 1012-1019. 

Visible photolysis of Mo(CO)s trapped in matrices containing N2 results, not only in the regeneration of Mo(CO)6, but also in the formation of a dinitrogen complex Mo(CO)s (N2) (Scheme 3). This molecule has been characterized by IR and Raman spectroscopy. Studies involving isotopic substitution with N2, and COhave confirmed that the molecule... 

McMillan, P. (1984b). A Raman spectroscopy study of glasses in the system CaO-MgO-SiOj. Amer. Mineral. 69, 645-59. 

Poole and Finney (1983b), using direct difference IR and laser Raman spectroscopy, studied the hydration of lysozyme. On the basis of these measurements, they suggested that there are conformational changes just below the hydration level for the onset of enzyme activity (i.e., 0.2-0.25 h). This conclusion conflicts with that of Careri et al. (1979b). Poole and Finney (1984) extended these measurements to lactalbumin. 

Li, C. and Stair, P.C. (1995) An advance in Raman studies of catalysts ultraviolet resonance Raman spectroscopy. Studies in Surface Science and Catalysis, 101 (11th International Congress on Catalysis -40th Anniversary, 1995, Pt B), 881-90. 

The conclusions from IR spectroscopy have been confirmed by recent Raman spectroscopy studies on the constituent bases of RNA, their nucleosides and nucleotides, and on related model compounds. The Raman spectra of cytosines rule out the prevalence of the imine form 6 in solution and indicate that the neutral molecules have the structure 2. They also indicate that the removal of a proton from the free base leads to an anion of type 9, and that in the cation N-3 is the site of protonation. 

Recent Raman spectroscopy studies - confirmed the conclusions of IR spectroscopy by showing that uracil and uridine possess the dilactam form and that the possibility that the lactim forms could predominate... 

In summary, we have shown that oxidation in air provides a powerful route to purify carbon nanostructures, but can also be used as an efficient tool for size control and surface modification. In situ Raman spectroscopy studies under isothermal and nonisothermal conditions allow a detailed and time-resolved investigation of changes in structure and composition during the oxidation process. 

Osswald S, Flahaut E, Gogotsi Y (2006) In situ Raman spectroscopy study of oxidation of... 

Mu M, Osswald S, Gogotsi Y, Winey KI (2009) An in situ Raman spectroscopy study of stress transfer between carbon nanotubes and polymer. Nanotechnology 20 335703-1-7... 

Malini R, Venkatakrishna K, Kurien J, Pai KM, Rao L, Kartha VB, Krishna CM (2006) Discrimination of normal, inflammatory, premalignant and malignant oral tissue a Raman spectroscopy study. Biopolymers 81 179-193... 

Wu, 1., and Colomban, R, Raman spectroscopy study on the stress distribution in the continuous fibre reinforced ceramic matrix composites, J. Raman Spectrosc., 28, 523, 1997. 

Rhenium oxide supported on alumina is present on the surface as a single rhenium species. Laser-Raman spectroscopy studies by Kerkhof, MouUjn, and Thomas indicate that the species consists of tetrahedral Re04 ions, which are dynamically distorted by the carrier or surface hydroxyl groups, as illustrated by the broadening of the band at 916 cm". Neither laser-Raman spectroscopy nor X-ray diffraction indicates that other rhenium species, e.g., octahedrally co-ordinated rhenium or Al-Re-0 compounds, are formed. 

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