Quantum confinement in hydrogen bond
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Data
2015-06-15
Autores
Santos, Carlos da Silva dos [UNESP]
Drigo Filho, Elso [UNESP]
Ricotta, Regina Maria [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Wiley-Blackwell
Resumo
In this work, the quantum confinement effect is proposed as the cause of the displacement of the vibrational spectrum of molecular groups that involve hydrogen bonds. In this approach, the hydrogen bond imposes a space barrier to hydrogen and constrains its oscillatory motion. We studied the vibrational transitions through the Morse potential, for the NH and OH molecular groups inside macromolecules in situation of confinement (when hydrogen bonding is formed) and nonconfinement (when there is no hydrogen bonding). The energies were obtained through the variational method with the trial wave functions obtained from supersymmetric quantum mechanics formalism. The results indicate that it is possible to distinguish the emission peaks related to the existence of the hydrogen bonds. These analytical results were satisfactorily compared with experimental results obtained from infrared spectroscopy. (c) 2015 Wiley Periodicals, Inc.
Descrição
Palavras-chave
quantum confinement, hydrogen bond, supersymmetric quantum mechanics, variational method, NH and OH molecular groups
Como citar
International Journal Of Quantum Chemistry, v. 115, n. 12, p. 765-770, 2015.