Journal of Raman Spectroscopy

Cover image for Vol. 45 Issue 6

June 2014

Volume 45, Issue 6

Pages 407–486

  1. Research articles

    1. Top of page
    2. Research articles
    1. Photochemical decoration of silver nanoparticles on ZnO nanowires as a three-dimensional substrate for surface-enhanced Raman scattering measurement (pages 407–413)

      Elumalai Satheeshkumar and Jyisy Yang

      Version of Record online: 13 APR 2014 | DOI: 10.1002/jrs.4477

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      A new method was proposed to decorate silver nanoparticles (AgNPs) on the side of wall of ZnO nanowires to form three-dimensional surface-enhanced Raman scattering (3D SERS) substrates. With assistance of SnCl2, AgNPs could be formed on the side wall of ZnO nanowires via photochemical reduction. The fabricated 3D SERS substrate is sensitive, and its enhancement factor reaches 107.

    2. Electrical field analysis of metal-surface plasmon resonance using a biaxially strained Si substrate (pages 414–417)

      Daisuke Kosemura, Siti Norhidayah binti Che Mohd Yusoff and Atsushi Ogura

      Version of Record online: 14 APR 2014 | DOI: 10.1002/jrs.4478

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      Electrical field components of metal-surface plasmon resonance were analyzed in detail. Both longitudinal optical (LO) and transverse optical (TO) phonon modes of a biaxially strained Si layer can be excited by surface-enhanced Raman spectroscopy (SERS). The z to y polarization ratio in SERS measurements was calculated to be 0.78 using the intensity ratio of TO to LO phonon modes.

    3. SERS study of a tetrapeptide based on histidine and glycine residues, adsorbed on copper/silver colloidal nanoparticles (pages 418–423)

      Cristina Gellini, Giuseppina Sabatino, Anna Maria Papini and Maurizio Muniz-Miranda

      Version of Record online: 8 MAY 2014 | DOI: 10.1002/jrs.4484

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      Surface-enhanced Raman scattering is employed to study the adsorption of a tetrapeptide containing histidine and glycine residues on Cu@Ag colloidal nanoparticles obtained by laser ablation and galvanic replacement. Histidine residues are found to act as docking sites of the tetrapeptide to the surface of the metal particles.

    4. Surface-enhanced Raman scattering of pyridine-functionalized multi-walled carbon nanotubes (pages 424–430)

      J. A. Anastasopoulos, A. Soto Beobide, L. Sygellou, S. N. Yannopoulos and G. A. Voyiatzis

      Version of Record online: 27 APR 2014 | DOI: 10.1002/jrs.4486

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      A thorough study for the identification and quantification of small concentrations of multi-walled carbon nanotubes (MWCNTs) in water suspensions via surface-enhanced Raman scattering has been performed. The functionalization of CNT with pyridine groups seems to favor a type of binding of MWCNT to the citrate-reduced silver colloid allowing the surface enhancement of the relevant Raman signal.

    5. Preparation of monodisperse bimetallic nanorods with gold nanorod core and silver shell and their plasmonic property and SERS efficiency (pages 431–437)

      Xu Dong, Jianfeng Zhou, Xiaoyun Liu, Danli Lin and Liusheng Zha

      Version of Record online: 9 MAY 2014 | DOI: 10.1002/jrs.4495

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      Monodisperse bimetallic nanorods with gold nanorod core and silver shell were synthesized. They have unique plasmonic property and SERS efficiency. When used as surface-enhanced Raman scattering substrate for analysis and detection, the Au@Ag nanorods have the following advantages: high reproducibility, high sensitivity, and high stabiltiy.

    6. Decay Dynamics of 3-methyl-3-pentene-2-one from the light absorbing S2(ππ*) state - Resonance Raman Spectroscopy and CASSCF Study (pages 438–447)

      Zhu-Bing Xu, Sheng Pan, Yi Yang, Jia-Dan Xue, Xuming Zheng, Bin-Bin Xie and Wei-Hai Fang

      Version of Record online: 27 APR 2014 | DOI: 10.1002/jrs.4476

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      The structural dynamics are studied using the resonance Raman spectroscopy and complete active space self-consistent field method calculations. The slopes of the S2(ππ*) potential surface along the C2=O7 and C3=C4 reaction coordinates vary as the wave-packet evolves. The structural dynamics along the C2=O7 coordinate is greater than that along the C3=C4 coordinate when towards S2(ππ*)/S1(nπ*) as compared with that in Franck-Condon. The decay dynamics in singlet and triplet realms are proposed.

    7. The use of Raman microscopy and laser desorption ionization mass spectrometry in the examination of synthetic organic pigments in modern works of art (pages 448–455)

      Suzanne Quillen Lomax, Joseph Francis Lomax and Amadeo De Luca-Westrate

      Version of Record online: 28 APR 2014 | DOI: 10.1002/jrs.4480

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      Raman spectroscopy, in combination with laser desorption ionization mass spectrometry, was used to examine 130 standard synthetic organic pigments including several previously unpublished pigment spectra. These spectra were used as references in the examination of samples from works of art, including, among others, red pigments used by Mark Rothko.

    8. Inside the glassmaker technology: search of Raman criteria to discriminate between Emile Gallé and Philippe-Joseph Brocard enamels and pigment signatures (pages 456–464)

      Maria Cristina Caggiani, Claire Valotteau and Philippe Colomban

      Version of Record online: 30 APR 2014 | DOI: 10.1002/jrs.4481

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      Eight enamelled glass objects made by Philippe-Joseph Brocard (1831–1896) and two representative objects made by Emile Gallé (1846–1904) have been analysed using a mobile Raman instrument at the Musée des arts décoratifs (Paris) in order to compare their colouration technology. This preliminary work confirms the potential of Raman spectroscopy, not as a simple analytical method but as a way to document the ancient technology of fine art objects and to discriminate between different genuine productions and/or copies.

    9. Thin film substrates from the Raman spectroscopy point of view (pages 465–469)

      L. Gasparov, T. Jegorel, L. Loetgering, S. Middey and J. Chakhalian

      Version of Record online: 29 APR 2014 | DOI: 10.1002/jrs.4487

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      We investigated 10 single crystal complex oxide substrates on the account of their applicability in the Raman-based thin film research. We suggest a spectra normalization procedure that utilizes a comparison of the substrate's Raman spectra to those of Si and CaF2. We find that MgO, LaGaO3, (LaAlO3)0.3(Sr2AlTaO6)0.7 (LSAT), DyScO3, YAlO3, and LaAlO3 can be useful for Raman-based thin film research, whereas TiO2 (rutile), NdGaO3, SrLaAlO4, and SrTiO3 exhibit multiple strong phonon modes and strong Raman background hindering thin film experiments.

    10. Phonon confinement effects in Raman spectra of porous silicon at non-resonant excitation condition (pages 470–475)

      Marin Kosović, Ozren Gamulin, Maja Balarin, Mile Ivanda, Vedran Đerek, Davor Ristić, Marijan Marciuš and Mira Ristić

      Version of Record online: 30 APR 2014 | DOI: 10.1002/jrs.4474

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      Light emitting porous silicon samples with different crystalline sizes were produced. The effects of strong phonon confinement, redshift and broadening, were found on the O(Γ) phonon mode of the Raman spectra recorded at non-resonant excitation condition using a near infrared 1064 nm laser excitation wavelength. Similarly, the blueshift of the photoluminescence peak was observed by reducing the crystalline sizes. Vibrational and optical findings were analysed within the existing models of confinement on the vibrational and electronic states of silicon nanocrystals.

    11. Stress-dependent correlations for resonant Raman bands in graphite with defects (pages 476–480)

      E. del Corro, M. Taravillo and V. G. Baonza

      Version of Record online: 10 APR 2014 | DOI: 10.1002/jrs.4475

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      Raman features correlations in graphite with defects have been studied under extreme stress conditions. A clear correlation between the intensities of the D, D′, and D + D′ bands has been found.

    12. Monitoring by Raman spectroscopy of the damage induced in the wake of energetic ions (pages 481–486)

      Sandrine Miro, Gihan Velisa, Lionel Thomé, Patrick Trocellier, Yves Serruys, Aurélien Debelle and Frédérico Garrido

      Version of Record online: 15 MAY 2014 | DOI: 10.1002/jrs.4482

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      Micro-Raman experiments performed on cross sections of 6H-SiC crystals irradiated with heavy ions allow monitoring the radiation damage all along the ion path. For slow ions (900-keV I), ballistic collisions lead to the amorphization of the surface region of samples. For swift ions (36-MeV W), the surface region remains crystalline and amorphization occurs around the end of the ion path. Synergistic effects between electronic and nuclear slowing down processes are also put forward.