Spectroscopic properties in the liquid phase: combining high-level ab initio calculations and classical molecular dynamics. |
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Authors: | Michele Pavone Giuseppe Brancato Giovanni Morelli Vincenzo Barone |
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Affiliation: | Dipartimento di Chimica, Università di Napoli Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia, 80126 Napoli, Italy. |
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Abstract: | We present an integrated computational tool, rooted in density functional theory, the polarizable continuum model, and classical molecular dynamics employing spherical boundary conditions, to study the spectroscopic observables of molecules in solution. As a test case, a modified OPLS-AA force field has been developed and used to compute the UV and NMR spectra of acetone in aqueous solution. The results show that provided the classical force fields are carefully reparameterized and validated, the proposed approach is robust and effective, and can also be used by nonspecialists to provide a general and powerful complement to experimental techniques. |
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Keywords: | ab initio calculations acetone molecular dynamics NMR spectroscopy UV/Vis spectroscopy |
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