Search Results - "Del Zoppo, M."

Absolute Raman intensity measurements and determination of the vibrational second hyperpolarizability of adamantyl endcapped polyynes by Lucotti, A., Tommasini, M., Fazzi, D., Del Zoppo, M., Chalifoux, W. A., Tykwinski, R. R., Zerbi, G.

“…Linear sp‐carbon polyynes are ideal molecules for the direct investigation of the physical properties of one‐dimensional conjugated systems. Traditionally, the…”
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Raman and SERS investigation of isolated sp carbon chains by Lucotti, A., Tommasini, M., Zoppo, M. Del, Castiglioni, C., Zerbi, G., Cataldo, F., Casari, C.S., Bassi, A. Li, Russo, V., Bogana, M., Bottani, C.E.

“…Carbon chains with sp hybridization and a known distribution of lengths have been studied by Raman and Surface Enhanced Raman Scattering (SERS). With the…”
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Electronic and dynamical effects from the unusual features of the Raman spectra of oligo and polythiophenes by Agosti, E., Rivola, M., Hernandez, V., Del Zoppo, M., Zerbi, G.

“…A comprehensive search for structure/property correlations in the Raman spectra of oligo and polythiophenes is carried out for many homologous series of…”
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Stabilization of linear carbon structures in a solid Ag nanoparticle assembly by Casari, C. S., Russo, V., Li Bassi, A., Bottani, C. E., Cataldo, F., Lucotti, A., Tommasini, M., Del Zoppo, M., Castiglioni, C., Zerbi, G.

“…Linear sp carbon nanostructures are gathering interest for the physical properties of one-dimensional systems. At present, the main obstacle to the synthesis…”
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Molecular first hyperpolarizability of push-pull polyenes: Relationship between electronic and vibrational contribution by a two-state model by Castiglioni, C, Del Zoppo M, Zerbi, G

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A new class of molecules with large, switchable vibrational non-linear optical responses: Photochromic diarylethene systems by Del Zoppo, M., Lucotti, A., Bertarelli, C., Zerbi, G.

“…Photochromic diarylethene molecules are characterized by electronic properties significantly different in the two isomers. In this work, we are particularly…”
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Relationship between infrared and Raman intensities in molecules with polarized π electrons by Tommasini, M., Castiglioni, C., Del Zoppo, M., Zerbi, G.

“…A model is presented which allows to obtain a linear relationship between infrared and Raman intensity parameters of the strongest vibrational bands of…”
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Phonon confinement and dispersion curves in finite polyene derivatives by Del Zoppo, M., Bianco, A., Zerbi, G.

“…We analyze the infrared and Raman spectra (both experimentally and with the aid of quantum chemical calculations) of a series of polyenals which provide us…”
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A relationship between Raman and infrared spectra: the case of push–pull molecules by Del Zoppo, M., Tommasini, M., Castiglioni, C., Zerbi, G.

“…Vibrational spectra of push–pull polyenes show a peculiar feature namely, in infrared and Raman spectra strong, coincident bands appear, arising from…”
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Molecules with quinoid ground state: a new class of large molecular optical nonlinearities? by Lanata, M., Bertarelli, C., Gallazzi, M.C., Bianco, A., Del Zoppo, M., Zerbi, G.

“…The extent of π-electron delocalization in polyconjugated organic materials is the basic molecular structural property required for attaining large molecular…”
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Experimental vibrational contributions to molecular hyperpolarisabilities: methods and measurements by Castiglioni, C., Tommasini, M., Del Zoppo, M.

“…The aim of this paper is to give a simple but a complete guide to the experimental determination of vibrational molecular first and second…”
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Molecules with enhanced negative third order vibrational polarizabilities: polymethine dyes and their vibrational spectra by Bianco, A., Del Zoppo, M., Zerbi, G.

“…In this paper, we present a theoretical study, based on quantum chemical “ab initio” calculations, on the structural requirements necessary for obtaining large…”
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Non-linear optical properties of cyanine systems by Del Zoppo, M., Bianco, A., Zerbi, G.

“…In this paper we present ab initio calculations for the evaluation of molecular hyperpolarizabilities of symmetric cyanine molecules. The influence on the…”
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Experimental molecular hyperpolarizabilities from vibrational spectra in systems with large electron-phonon coupling by Castiglioni, C., Del Zoppo, M., Zuliani, P., Zerbi, G.

“…Experimental data are presented and discussed on the relaxation contribution (β r and γ r) to first- and second-order molecular hyperpolarizabilities of…”
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Chain flexibility and nonlinear optical properties of conjugated molecules by Del Zoppo, M., Sugliani, S., Zerbi, G.

“…The influence of conformational disorder on the nonlinear optical behaviour of push–pull polyenes, is discussed with the help of vibrational spectroscopy…”
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Chain flexibility and nonlinear optical properties in polyenes within a two-state (VB-CT) model by Sugliani, S., Del Zoppo, M., Zerbi, G., Shu, C.-F.

“…We present a simple two-state model that justifies the dependence of first-order hyperpolarizabilities ( β) of push–pull polyenes on conformational disorder…”
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Use of vibrational spectra for the determination of first-order molecular hyperpolarizabilities of push-pull polyenes as function of structural parameters by Del Zoppo, M., Castiglioni, C., Zuliani, P., Razelli, A., Tommasini, M., Zerbi, G., Blanchard-Desce, M.

“…Experimental data on the nonlinear optical molecular hyperpolarizabilities of push–pull polyenes (measured with the vibrational method recently proposed) are…”
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Intramolecular charge delocalization and nonlinear optical properties from vibrational spectra by Del Zoppo, M., Castiglioni, C., Tommasini, M., Mondini, P., Magnoni, C., Zerbi, G.

“…The vibrational method for the evaluation of molecular hyperpolarizabilities of polyconjugated molecules is used in order to account for the modulation of…”
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Experimental Behavior of Nonconforming RC Columns with Deformed Bars under Constant Axial Load and Fixed Biaxial Bending by Del Zoppo, Marta, Di Ludovico, Marco, Verderame, Gerardo Mario, Prota, Andrea

“…AbstractAlthough recent efforts have been made to understand the behavior of RC members subjected to cyclic biaxial bending, the experimental data available in…”
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The vibrational approach to determine molecular nonlinearities: What do we learn from the method and the data? by Del Zoppo, M., Castiglioni, C., Zuliani, P., Zerbi, G.

“…It is shown that molecular non linear optical properties can be measured with the vibrational infrared and Raman spectra. Correlations between optical non…”
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