Computing the Absorption and Emission Spectra of 5-Methylcytidine in Different Solvents: A Test-Case for Different Solvation Models(174 views visite) Martinez-fernandez L, Pepino AJ, Segarra-marti J, Banyasz A, Garavelli M, Improta R
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Affiliations Affiliazioni: *** IBB - CNR ***
Istituto di Biostrutture e Bioimmagini, CNR, Via Mezzocannone 16, I-80134 Napoli, Italy., Dipartimento di Chimica "G. Ciamician", Universita di Bologna , Bologna, Italy., Ecole Normale Superieure de Lyon, CNRS, UMR 5182, Universite de Lyon , 46 Allee d'Italie, F-69364 Lyon Cedex 07, France., LIDYL, CEA, CNRS, Universite Paris-Saclay , F-91191 Gif-sur-Yvette, France.,
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Computing the Absorption and Emission Spectra of 5-Methylcytidine in Different Solvents: A Test-Case for Different Solvation Models
The optical spectra of 5-methylcytidine in three different solvents (tetrahydrofuran, acetonitrile, and water) is measured, showing that both the absorption and the emission maximum in water are significantly blue-shifted (0.08 eV). The absorption spectra are simulated based on CAM-B3LYP/TD-DFT calculations but including solvent effects with three different approaches: (i) a hybrid implicit/explicit full quantum mechanical approach, (ii) a mixed QM/MM static approach, and (iii) a QM/MM method exploiting the structures issuing from molecular dynamics classical simulations. Ab-initio Molecular dynamics simulations based on CAM-B3LYP functionals have also been performed. The adopted approaches all reproduce the main features of the experimental spectra, giving insights on the chemical-physical effects responsible for the solvent shifts in the spectra of 5-methylcytidine and providing the basis for discussing advantages and limitations of the adopted solvation models.
Computing the Absorption and Emission Spectra of 5-Methylcytidine in Different Solvents: A Test-Case for Different Solvation Models
Antonini A, Vitale C, Barone P, Cilia R, Righini A, Bonuccelli U, Abbruzzese G, Ramat S, Petrone A, Quatrale R, Marconi R, Ceravolo R, Stefani A, Lopiano L, Zappia M, Capus L, Morgante L, Tamma F, Tinazzi M, Colosimo C, Guerra UP, Valzania F, Fagioli G, Distefano A, Bagnato A, Feggi L, Anna S, Maria Teresa Rosaria De Cr, Nobili F, Mazzuca N, Baldari S, Eleopra R, Bestetti A, Benti R, Varrone A, Volterrani D, Massa R, Stocchi F, Schillaci O, Dore F, Zibetti M, Castellano G, Battista SG, Giorgetti G * The relationship between cerebral vascular disease and parkinsonism: The VADO study(422 visite) Parkinsonism Relat D (ISSN: 1353-8020, 1873-5126, 1873-5126electronic), 2012; 18(6): 775-780. Impact Factor:3.274 DettagliEsporta in BibTeXEsporta in EndNote
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Hesse B, Tagil K, Cuocolo A, Anagnostopoulos C, Bardies M, Bax J, Bengel F, Busemann Sokole E, Davies G, Dondi M, Edenbrandt L, Franken P, Kjaer A, Knuuti J, Lassmann M, Ljungberg M, Marcassa C, Marie PY, Mckiddie F, O'connor M, Prvuolovich E, Underwood R * 3. 0 T perfusion MR imaging(551 visite) Rivista Di Neuroradiologia (ISSN: 1120-9976), 2004; 17(6): 807-812. Impact Factor:0.023 DettagliEsporta in BibTeXEsporta in EndNote
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