Journal of Raman Spectroscopy

Cover image for Vol. 42 Issue 1

January 2011

Volume 42, Issue 1

Pages 1–121

  1. Research Articles

    1. Top of page
    2. Research Articles
    3. Short Communications
    1. Enhancing and suppressing four-wave mixing in electromagnetically induced transparency window (pages 1–4)

      Zhiqiang Nie, Yanpeng Zhang, Yan Zhao, Chenzhi Yuan, Changbiao Li, Rui Tao, Jinhai Si and Chenli Gan

      Version of Record online: 11 APR 2010 | DOI: 10.1002/jrs.2653

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      The enhancement and suppression of four-wave mixing (FWM) in electromagnetically induce transparency (EIT) window in Y-type 85Rb atomic system is demonstrated. The EIT of probe, the enhancement and suppression of FWM signals can be modified by the sequential-cascade double-dressing. The influence of different probe polarization configurations is also studied.

    2. One-pot synthesis of silver particle aggregation as highly active SERS substrate (pages 5–11)

      Zhicheng Cai, Chungui Tian, Lei Wang, Wei Zhou, Baoli Wang and Honggang Fu

      Version of Record online: 11 MAR 2010 | DOI: 10.1002/jrs.2640

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      Silver particle aggregates were synthesized through a sodium dodecyl sulfate-assisted one-pot reaction. The aggregates could act as highly active SERS substrates with good reproducibility and stability.

    3. A comparative study of surface-enhanced Raman scattering from silver-coated anodic aluminum oxide and porous silicon (pages 12–20)

      S. N. Terekhov, P. Mojzes, S. M. Kachan, N. I. Mukhurov, S. P. Zhvavyi, A. Yu. Panarin, I. A. Khodasevich, V. A. Orlovich, A. Thorel, F. Grillon and P.-Y. Turpin

      Version of Record online: 20 APR 2010 | DOI: 10.1002/jrs.2661

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      Three types of Ag-coated porous anodic aluminum oxide films and silvered porous silicon were prepared and characterized as SERS substrates. At 532 nm excitation, the SERS signals from AAO-based substrates were comparable with that from PSi-based ones, whereas at 441.6 nm they were about twice higher. It is suggested that resonance conditions with the plasmon extinction rather than with analyte absorption govern the Raman signal enhancement from silvered AAO substrates.

    4. Solving chemical classification problems using polarized Raman data (pages 21–35)

      S. Hassing, K. D. Jernshøj and M. Hedegaard

      Version of Record online: 6 MAY 2010 | DOI: 10.1002/jrs.2666

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      It is shown by using polarized instead of unpolarized Raman data in multivariate analysis that the outcome of chemical classification problems is improved considerably. This enables in vivo detection of minor molecular changes accompanying bio-molecular processes.

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    5. Information-theoretic chemometric analyses of Raman data for chemical reaction studies (pages 36–47)

      Wee Chew

      Version of Record online: 25 APR 2010 | DOI: 10.1002/jrs.2660

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      A series of information-theoretic multivariate chemometric analyses were applied in concert for transinformation of in situ Raman data of a model chemical reaction into useful chemical information and quantify information gain.

    6. Forgery detection on an Arabic illuminated manuscript by micro-Raman and X-ray fluorescence spectroscopy (pages 48–55)

      A. Duran, M. L. Franquelo, M. A. Centeno, T. Espejo and J. L. Perez-Rodriguez

      Version of Record online: 29 MAR 2010 | DOI: 10.1002/jrs.2644

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      The detection of compounds such as titanium oxides, barite and organic synthetic colourants by micro-Raman and X-ray fluorescence (using a new XRD/XRF portable system) provides an indisputable indication for forging or retouching after 19th century in some zones of an Arabic manuscript initially supposed to be from the 14th century.

    7. Dussertite BaFe3+3(AsO4)2(OH)5—a Raman spectroscopic study of a hydroxy-arsenate mineral (pages 56–61)

      Ray L. Frost, Silmarilly Bahfenne, Jiří Čejka, Jiří Sejkora, Jakub Plášil, Sara J. Palmer, Eloise C. Keeffe and Ivan Němec

      Version of Record online: 27 JAN 2010 | DOI: 10.1002/jrs.2612

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      The mineral dussertite, an anhydrous hydroxy-arsenate mineral of formula BaFe3+3(AsO4)2(OH)5, has been studied by Raman spectroscopy, complemented with infrared spectroscopy. Raman bands are assigned to the (AsO4)3−ν3 antisymmetric stretching mode, the (AsO4)3−ν1 symmetric stretching mode and the As-OM2 + /3+ stretching modes.

    8. Raman spectroscopic study of the hydrogen and arsenate bonding environment in isostructural synthetic arsenates of the variscite group—M3+ AsO4·2H2O (M3+ = Fe, Al, In and Ga): implications for arsenic release in water (pages 62–71)

      Mario A. Gomez, Jean-Francois Le Berre, Hassane Assaaoudi and George P. Demopoulos

      Version of Record online: 16 MAR 2010 | DOI: 10.1002/jrs.2639

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      Raman spectroscopy of synthetic FeAsO4·2H2O, AlAsO4·2H2O, InAsO4·2H2O, and GaAsO4·2H2O are investigated on the basis of characteristic arsenate and hydroxyl vibrations, with a focus on how the hydrogen and arsenate bonding environments affect the arsenic release measured. In particular, weak hydrogen bonds and differences in electronegativities of the isoelectronic metals are postulated to affect the measured mineral's stability in water. These apparent correlations were further examined and verified to hold for the phosphate isostructural analogues.

    9. Minerals from Macedonia. XXVI. Characterization and spectra–structure correlations for grossular and uvarovite. Raman study supported by IR spectroscopy (pages 72–77)

      Petre Makreski, Tomče Runčevski and Gligor Jovanovski

      Version of Record online: 11 MAR 2010 | DOI: 10.1002/jrs.2641

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      The characterization of grossular [Ca3Al2(SiO4)3] and uvarovite [Ca3Cr2(SiO4)3] garnets is carried out by Raman spectroscopy. The substitution of Al3+ with Cr3+ promotes blue-shifting of the high-energy Raman bands and red-shifting of the corresponding IR bands, which are explained by the introduction of two effects that promote band shifting in opposite directions—the effect of different cation crystal field stabilization energies versus the effect of different cation masses and radii.

    10. DFT-aided interpretation of the Raman spectra of the polymorphic forms of Y2Si2O7 (pages 78–85)

      Reinhard Kaindl, Daniel M. Többens and Volker Kahlenberg

      Version of Record online: 8 APR 2010 | DOI: 10.1002/jrs.2657

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      The Raman spectra of polymorphs of Y2Si2O7 were experimentally determined and calculated by quantum chemical methods. Depending upon the functional, an average and maximum deviation between experimental and calculated spectra of ± 8 and 20 cm−1 could be achieved, enabling assignment of most bands to vibrational modes. Relationship between structural and spectral changes is discussed.

    11. On the interpretation of the Raman spectra of Maya Blue: a review on the literature data (pages 86–96)

      Antonio Doménech, María Teresa Doménech-Carbó and Howell G. M. Edwards

      Version of Record online: 18 MAR 2010 | DOI: 10.1002/jrs.2642

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      Raman spectra of Maya Blue can be interpreted in terms of the presence of different topological isomers of indigo and dehydroindigo molecules attached to the palygorskite channel system

    12. Betulin and its natural resource as potential anticancer drug candidate seen by FT-Raman and FT-IR spectroscopy (pages 97–107)

      A. Fǎlǎmaş, S. Cîntǎ Pînzaru, C. A. Dehelean, C. I. Peev and C. Soica

      Version of Record online: 29 APR 2010 | DOI: 10.1002/jrs.2658

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      The FT-Raman and IR spectra of betulin [(lup-20(29)-ene-3β,28-diol)] were recorded and analyzed. The vibrational wavenumbers and corresponding vibrational assignments were theoretically studied using the Gaussian 03 package, proposing thus a complete vibrational characterization of betulin modes. Based on these investigations, two direct applications have been described. It was shown that the outer bark of the birch tree contains betulin as a major component along with minor amounts of pentacyclic triterpenes. Several guest–host type complexes of betulin–cyclodextrins have been prepared and analyzed using FT-Raman spectroscopy.

    13. Structural and vibrational analyses of 2-(2-benzofuranyl)-2-imidazoline (pages 108–116)

      C. D. Contreras, M. Montejo, J. J. López González, J. Zinczuk and S. A. Brandán

      Version of Record online: 13 APR 2010 | DOI: 10.1002/jrs.2659

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      We have investigated the molecular vibrations of both forms of 2-(-2-benzofuranyl)-2-imidazoline by infrared and Raman spectroscopies and calculations based on the density functional theory (DFT) approach. In addition, a complete assignment was performed for the compound.

  2. Short Communications

    1. Top of page
    2. Research Articles
    3. Short Communications
    1. Differential Raman cross section of dimethyl sulfide (pages 117–121)

      Robert E. Barletta and Christopher H. Roe

      Version of Record online: 12 JUL 2010 | DOI: 10.1002/jrs.2749

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      The relative differential Raman cross section of DMS measured with respect to the N2 fundamental at 2331 cm−1, σDMS, has been measured at several excitation wavelengths in order to assess the applicability of Raman spectroscopy for direct quantitative measurement. At 488 nm, σDMS for the carbon–sulfur stretching mode was found to be 4.9 ± 1.6, while, for the carbon–hydrogen stretching mode it was 2.8 ± 0.9. At 248 nm, no significant resonance enhancement was observed.