Journal ArticleDOI
Rotating Raman Sample Technique for Colored Crystal Powders; Resonance Raman Effect in Solid KMnO4
Wolfgang Kiefer,H.J. Bernstein +1 more
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TLDR
In this paper, a simple sample technique which makes it possible to record Raman spectra of highly absorbing solids is described, where the main feature is a rotating sample system containing pressed crystal powders, on which the laser beam is focused.Abstract:
A simple sample technique which makes it possible to record Raman spectra of highly absorbing solids is described. The main feature is a rotating sample system containing pressed crystal powders, on which the laser beam is focused. The relative motion between laser focus and sample surface avoids heating and decomposition of the crystal powder. With this technique it is, for instance, possible to obtain a Raman spectrum of solid potassium permanganate, displaying a progression of strongly resonance enhanced overtones of the totally symmetric permanganate mode as well as a well-defined weakly enhanced spectrum for the other internal modes.read more
Citations
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Journal ArticleDOI
Raman Spectroscopy—A Prospective Tool in the Life Sciences
TL;DR: The bulk of the review highlights recent applications of Raman spectroscopy, including structural investigations of a hormone receptor, testing the biocompatibility of dental implants, probing soil components and plant tissue alkaloids, and localization of single bacteria.
Journal ArticleDOI
Raman spectroscopy of monolayer-type oxide catalysts: Supported Mo oxides
TL;DR: In this paper, a monolayer catalysts based on a structural model which assumed spreading of the active oxide over the support surface were investigated by a variety of techniques, conventional bulk sampling techniques as well as by surface-sensitive electron and ion spectroscopies, in an attempt to elucidate the nature of the catalyst surface species, and to study the coordination environment of active metal center(s).
Journal ArticleDOI
Probing zeolites by vibrational spectroscopies
Silvia Bordiga,Carlo Lamberti,Carlo Lamberti,Francesca Bonino,Arnaud Travert,Frédéric Thibault-Starzyk +5 more
TL;DR: This review addresses the most relevant aspects of vibrational spectroscopies applied to zeolites and zeotype materials and describes the methods needed to precisely determine the IR absorption coefficients, making IR a quantitative technique.
Journal ArticleDOI
The Structure of Hexane Soot I: Spectroscopic Studies:
TL;DR: In this article, the composition and surface structure of soot derived from the combustion of n-hexane have been examined by FT-IR, Raman, 13C CP/MAS NMR, and EPR spectroscopies.
Journal ArticleDOI
Vibrational spectroscopy of mixed stack organic semiconductors: Neutral and ionic phases of tetrathiafulvalene–chloranil (TTF–CA) charge transfer complex
TL;DR: In this paper, the infrared and Raman spectra for the room temperature, quasineutral, and the low temperature, quasi-ionic, phases of the mixed stack charge transfer complex tetrathiafulvalene-chloranil (TTF-CA) are reported.
References
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Journal ArticleDOI
A Cell for Resonance Raman Excitation with Lasers in Liquids
Wolfgang Kiefer,H.J. Bernstein +1 more
TL;DR: In this paper, the resonance Raman effect in solutions with laser excitation is restricted by the absorption of the sample and due to the thermal lens effect it is not possible to get a sharp laser focus in highly absorbing media.
Journal ArticleDOI
Laser-Excited Rotation–Vibration Raman Scattering in Ultra-Small Gas Samples*
Joseph J. Barrett,N. I. Adams +1 more
TL;DR: In this article, the focused beam of an argon-ion laser was used as a light source for Raman-scattering experiments in gases, and photoelectric recording of rotation-vibration Raman spectra was observed from about 1011 gas molecules in the focal region of the laser beam.
Journal ArticleDOI
Resonance Raman effect in MnO−4 with 5145 Å laser excitation
Wolfgang Kiefer,H.J. Bernstein +1 more
TL;DR: In this article, the disociation energy of the MnO − 4 ion has been estimated from the wavenumbers of the overtones of ν 1 (A 1 ) mode of this ion.
Resonance Raman Effect in MnO4(-) with 5145A Laser Excitation,
W. Kiefer,H. J. Bernstein +1 more
TL;DR: In this paper, Resonance Raman scattering of the MnO4(-) ion in H2O and D2O solutions is reported, and several overtones of the v(1) mode of this ion (T(d) symmetry) and combination tones nv(1)(A1) + v3(F2) are observed.