Journal of Raman Spectroscopy

Cover image for Vol. 45 Issue 5

May 2014

Volume 45, Issue 5

Pages 323–406

  1. Research articles

    1. Top of page
    2. Research articles
    1. New features in the anti-Stokes and Stokes Raman spectra of single-walled carbon nanotubes that are highly separated into their semiconducting and metallic nanotube components (pages 323–331)

      Mihaela Baibarac, Ioan Baltog, Lucian Mihut and Serge Lefrant

      Article first published online: 10 APR 2014 | DOI: 10.1002/jrs.4473

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      Abnormal anti-Strokes Raman emission is a characteristic of semiconducting carbon nanotubes. It grows further under increases in excitation light intensity or temperature.

    2. Enhancement in SERS intensities of azo dyes adsorbed on ZnO by plasma treatment (pages 332–337)

      Chih-Sheng Liu, Bing-Han Li, Chih-Hsuan Chen, Jr-Wei Peng and Szetsen Lee

      Article first published online: 20 MAR 2014 | DOI: 10.1002/jrs.4465

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      The observed surface-enhanced Raman scattering effect of azo dyes adsorbed on ZnO can be ascribed to charge-transfer resonance effect. Time-dependent density functional theory was used to calculate the optical spectra and interpret the observed chemical enhancement. Plasma-induced defect formation and band gap shift in ZnO and the coupling of energy levels between ZnO and azo dye molecules are responsible for the observed enhancement of surface-enhanced Raman scattering intensities.

    3. Comparison of SERRS and RRS excitation profiles of [Fe(tpy)2]2+ (tpy = 2,2':6',2''-terpyridine) supported by DFT calculations: effect of the electrostatic bonding to chloride-modified Ag nanoparticles on its vibrational and electronic structure (pages 338–348)

      Ivana Šloufová, Blanka Vlčková, Marek Procházka, Jan Svoboda and Jiří Vohlídal

      Article first published online: 9 APR 2014 | DOI: 10.1002/jrs.4468

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      Comparison of resonance Raman scattering (RRS)/nonresonance (or normal) Raman spectra (NRS) and surface-enhanced resonance Raman scattering/surface-enhanced Raman scattering excitation profiles of [Fe(terpyridine)2]2+ spectral bands in the range of 445–780 nm supported by density functional theory calculations, polarization NRS and solid state RRS spectra is reported. The electrostatic bonding of the complex dication to the chloride-modified Ag nanoparticles does not perturb its geometric and ground state electronic structure, however, it leads to a slight change in localization of one of the three metal-to-ligand charge transfer electronic transitions and to promotion of Herzberg–Teller activation of non-totally symmetric Raman-active modes.

    4. An analysis of bivalve larval shell pigments using micro-Raman spectroscopy (pages 349–358)

      Christine M. Thompson, Elizabeth W. North, Sheri N. White and Scott M. Gallager

      Article first published online: 1 APR 2014 | DOI: 10.1002/jrs.4470

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      We present a Raman study investigating polyene pigments in the shells of bivalve larvae. We looked at spectra from seven species to determine the differences between species, how concentrations of pigments change in different regions of the shell, and if larvae are capable of incorporating pigments directly from source waters. This is the first study to use Raman spectroscopy to investigate pigments in shells of bivalve larvae.

    5. Analyzing ultrafast multiplex coherent anti-Stokes Raman spectra with picosecond probing (pages 359–368)

      Matthias Lütgens, Susana Chatzipapadopoulos, Frank Friedriszik and Stefan Lochbrunner

      Article first published online: 14 APR 2014 | DOI: 10.1002/jrs.4466

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      This article reports a set of analytic formulas for an efficient simulation of time and frequency resolved coherent anti-Stokes Raman scattering spectra measured with picosecond pump and probe fields and ultrashort Stokes pulses. A systematic comparison of measured and simulated time and frequency dependent data is presented for substances with increasing complexity. Vibrational frequencies and homogeneous dephasing rates are extracted by fitting the whole third order response.

    6. Evolution of the Raman backscattered intensity used to analyze the micromechanisms of deformation of various polypropylene blends in situ during a uniaxial tensile test (pages 369–376)

      S. Chaudemanche, M. Ponçot, S. André, A. Dahoun and P. Bourson

      Article first published online: 10 APR 2014 | DOI: 10.1002/jrs.4463

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      This paper presents a study of the evolution of the Raman backscattered intensity used to follow the modifications of polymer microstructure in real time during a tensile test. The polypropylene blends will be characterized optically at the same probing wavelength by incoherent light scattering to understand phenomena enlightened by Raman spectroscopy. Then, a discussion on the Raman intensity evolution is conducted, with the possible contribution of Raman spectroscopy to describe stages of the volume damage micromechanism.

    7. Thermal conductivity of GexSb(As)ySe100-x-y glasses measured by Raman scattering spectra (pages 377–382)

      Yu-Lin Gan, Li Wang, Xue-Qiong Su, Si-Wei Xu, Xiang Shen and Rong-Ping Wang

      Article first published online: 29 APR 2014 | DOI: 10.1002/jrs.4462

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      We systematically measured thermal conductivity of chalcogenide glasses by measuring their Stokes and anti-Stokes Raman scattering spectra and estimating the temperature raised by laser irradiation via the ratio of Stoke and anti-Stokes scattering cross-section. We estimated the thermal conductivity of the glasses. Comparing our results with those reported data, we demonstrated the viability of Raman scattering method for thermal conductivity measurements.

    8. Irradiated rare-earth-doped powellite single crystal probed by confocal Raman mapping and transmission electron microscopy (pages 383–391)

      X. Wang, G. Panczer, D. de Ligny, V. Motto-Ros, J. Yu, J. L. Dussossoy, S. Peuget, I. Jóźwik-Biala, N. Bérerd and J. Jagielski

      Article first published online: 14 APR 2014 | DOI: 10.1002/jrs.4472

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      The irradiation-induced damages and structure modifications of rare earth doped powellite single crystal have been precisely studied using optical and electron microscopy techniques. It is shown that powellite is characterized by high radiation resistance.

    9. Raman and infrared, microwave spectra, conformational stability, adjusted r0 structural parameters, and vibrational assignments of cyclopentylamine (pages 392–406)

      Ikhlas D. Darkhalil, Joshua J. Klaassen, Nick Nagels, Wouter A. Herrebout, Benjamin J. van der Veken, Ranil M. Gurusinghe, Michael J. Tubergen and James R. Durig

      Article first published online: 30 APR 2014 | DOI: 10.1002/jrs.4467

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      Four possible conformers have been identified in the vibrational spectra of cyclopentylamine. The enthalpy difference between these four conformers has been determined using variable temperature spectra of the sample dissolved in xenon solution.