Structural Analysis from Molecules to Nanomaterials
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International Journal of Spectroscopy Vibrational Spectroscopy: Structural Analysis from Molecules to Nanomaterials Guest Editors: Ahmed Aamouche, Sergio Armenta, and Jean-Valère Naubron Vibrational Spectroscopy: Structural Analysis from Molecules to Nanomaterials International Journal of Spectroscopy Vibrational Spectroscopy: Structural Analysis from Molecules to Nanomaterials Guest Editors: Ahmed Aamouche, Sergio Armenta, and Jean-Valre Naubron Copyright © 2011 Hindawi Publishing Corporation. All rights reserved. This is a special issue published in volume 2011 of “International Journal of Spectroscopy.” All articles are open access articles distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, pro- vided the original work is properly cited. Editorial Board Maher S. Amer, USA Karol Jackowski, Poland Dhiraj Sardar, USA S. Michael Angel, USA Jukka Jokisaari, Finland Stefan Schmatz, Germany Hakan Arslan, Turkey Jozef Kaiser, Czech Republic K. W. Michael Siu, Canada Rolf W. Berg, Denmark Wei Kong, USA Shigehiko Takegami, Japan A.M. Brouwer, The Netherlands Jaan Laane, USA Veronica Vaida, USA Steven G. Buckley, USA Linda B. McGown, USA Akihide Wada, Japan Andres D. Campiglia, USA Jeanne L. McHale, USA Adam P. Wax, USA Chak Keung Chan, Hong Kong Giovanni Meloni, USA Christopher T. Williams, USA Ramachandra R. Dasari, USA Li June Ming, USA Kam-Sing Wong, Hong Kong Craig J. Eckhardt, USA Guillermo Moyna, USA Jin Zhang, USA Hicham Fenniri, Canada Eugene Oks, USA GuangZhu,HongKong M. Ashraf Gondal, Saudi Arabia David Ramaker, USA Erik R. Zuiderweg, USA Peter B. Harrington, USA Hans Riesen, Australia Contents Vibrational Spectroscopy: Structural Analysis from Molecules to Nanomaterials, Ahmed Aamouche, Sergio Armenta, and Jean-Valere` Naubron Volume 2011, Article ID 795694, 2 pages On the Pressure and Temperature Dependence of the Absorption Coefficient of NH3,F.Aousgi, S. Hadded, and H. Aroui Volume 2011, Article ID 816548, 7 pages First Observation of Defined Structural Motifs in the Sulfur-Iodine Thermochemical Cycle and Their Role in Hydrogen Production,V´ıctor H. Ramos-Sanchez,´ John Tomkinson, Jesus´ Muniz-Soria,˜ Edgar Valenzuela, and Robin Devonshire Volume 2011, Article ID 691217, 14 pages Molecular Self-Assembling of N-Methylacetamide in Solvents, Hideyuki Minami and Makio Iwahashi Volume 2011, Article ID 640121, 7 pages Conformational Analysis in Solution of a Chiral Bisoxazoline Molecule: Vibrational Circular Dichroism Spectroscopy and Density Functional Theory Study, A. Aamouche and P. J. Stephens Volume 2011, Article ID 905045, 11 pages Polymer Characterization by Combined Chromatography-Infrared Spectroscopy, James L. Dwyer and Ming Zhou Volume 2011, Article ID 694645, 13 pages Distribution of Heat Stabilizers in Plasticized PVC-Based Biomedical Devices: Temperature and Time Effects, Lidia Maria Bodecchi, Caterina Durante, Marcello Malagoli, Matteo Manfredini, Andrea Marchetti, and Simona Sighinolfi Volume 2011, Article ID 641257, 8 pages Effect of Artificial Saliva on the Apatite Structure of Eroded Enamel, Xiaojie Wang, Boriana Mihailova, Arndt Klocke, Stefanie Heidrich, and Ulrich Bismayer Volume 2011, Article ID 236496, 9 pages In Situ IR Characterization of CO Interacting with Rh Nanoparticles Obtained by Calcination and Reduction of Hydrotalcite-Type Precursors, F. Basile, I. Bersani, P. Del Gallo, S. Fiorilli, G. Fornasari, D. Gary, R. Mortera, B. Onida, and A. Vaccari Volume 2011, Article ID 458089, 8 pages Improving SERS Detection of Bacillus thuringiensis Using Silver Nanoparticles Reduced with Hydroxylamine and with Citrate Capped Borohydride, Hilsamar Felix-Rivera,´ Roxannie Gonzalez,´ Gabriela Del Mar Rodr´ıguez, Oliva M. Primera-Pedrozo, Carlos R´ıos-Velazquez,´ and Samuel P. Hernandez-Rivera´ Volume 2011, Article ID 989504, 9 pages Infrared and Raman Spectroscopic Study of Carbon-Cobalt Composites, AndreTembre,´ Jacques Henocque,´ and Martial Clin Volume 2011, Article ID 186471, 6 pages Hindawi Publishing Corporation International Journal of Spectroscopy Volume 2011, Article ID 795694, 2 pages doi:10.1155/2011/795694 Editorial Vibrational Spectroscopy: Structural Analysis from Molecules to Nanomaterials Ahmed Aamouche,1 Sergio Armenta,2 and Jean-Valere` Naubron3 1 D´epartement des Sciences de la Mati`ere, Facult´e Polydisciplinaire de Safi, Cadi Ayyad University, 46000 Safi, Morocco 2 Department of Chemistry, Faculty of Sciences, Universitat Autonoma` de Barcelona, Bellaterra, 08193 Barcelona, Spain 3 Spectropole, FR1739, Campus Saint J´erome,ˆ Aix-Marseille Universit´e, 13397 Marseille, France Correspondence should be addressed to Ahmed Aamouche, [email protected] Received 8 September 2011; Accepted 8 September 2011 Copyright © 2011 Ahmed Aamouche et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Vibrational spectroscopy has become one of the key tech- appearance of these papers was according to the atomic size niques for the structural recognition of molecular systems of the studied system. and measuring their interactions. Its spectral range, corre- In the first paper entitled “On the pressure and tem- sponding to vibrational transitions, leads to knowledge of perature dependence of the absorption coefficient of NH3,” the functional groups of the analyzed systems. Since the F. Aousgi et al. have used Fourier transform infrared spec- discovery of infrared radiation, two centuries ago, then Ra- troscopy (FTIR) and the multispectrum fitting technique man scattering a century later, these techniques have under- in order to determine the absorption coefficients at the gone extraordinary breakthrough to a variety of applications center and in the wings of 60 lines pertaining to the PP on small molecules and on macromolecules alike. Due to branch of the ν4bandofNH3 as a function of NH3 and recent wide applications, we have encouraged our peers to N2 pressures for different temperatures. In agreement with contribute either original research or review articles that will previous works, they showed that the variations of the self- recapitulate the continuing advancement to interpret molec- absorption coefficient at the center and in the wings of a ular and even material structure using vibrational spectro- given line are not the same and are functions of the pres- scopy mainly infrared absorption. sure. In addition, they established that the temperature de- In this work, we were particularly interested in articles pendence of the absorption coefficient of NH3-N2 mixture tackling the junction of the three domains: physics, chem- fit closely an exponential law. istry, and biology. Obviously, the selected topics do not rep- resent all the advances in this field. Nevertheless, they will In the second paper, “First observation of defined struc- provide an assorted knowledge to the readers. We should not tural motifs in the Sulfur-Iodine Thermochemical Cycle, and forget to thank the authors for their worthy contributions their role in hydrogen production,” V. H. Ramos-Sanchez and also to recognize the reviewers’ assistance. This special et al. investigates the ionic species coexisting in the HIx feed issue encloses ten papers, eight of them exploit the infrared of the Sulfur-Iodine thermochemical cycle. They revealed for absorption, three relayed the Raman scattering, and one the first time, evidence for the presence of discrete water paper utilizes the inelastic neutron scattering. In various cir- structural motifs under specific conditions. This kind of cumstances, other experimental techniques, as electronic study has attracted the most attention worldwide for the microscopy or liquid chromatography, were combined to the carbon-free energy source and the valuable reagent gas pro- vibrational spectroscopy. A half of these papers illustrate a duction. molecular system, whereas the other half considers a mate- In the third paper, “Molecular Self-Assembling of N- rial nanostructure. Finally, two of the papers use the theo- Methylacetamide in Solvents,” H. Minami et al. studied retical methods to simulate vibrational spectra. The order of by near-infrared (NIR) spectroscopy the self-association of 2 International Journal of Spectroscopy N-methylacetamide in different solvents at various tempera- Rh crystal size has been investigated through the CO adsorp- tures and concentrations. The different dielectric properties tion on the Rh nanoparticles. The role of interlayer anions of the solvents and, of course, the temperature and con- in the precursors affects the properties of the final materials centration drastically affect the aggregation number of N- and different materials prepared from silicate, instead of methylacetamide, being obtained the higher association carbonate, containing precursors were investigated. degree with tetrachloroethylene. In the ninth paper entitled “Improving SERS Detection In the fourth paper, the research of A. Aamouche et al. of Bacillus thuringiensis using Silver Nanoparticles reduced “Conformational analysis in solution of a chiral bis-oxa- with Hydroxylamine and with Citrate Capped Borohydride,” zoline molecule: vibrational circular dichroism spectroscopy Felix-Rivera´ et al. identify biochemical components of the and density functional theory study” is focused on the eval- cell wall and endospores of Bacillus thuringiensis by sur- uation of FTIR and vibrational