Solvatochromism and preferential solvation of Brooker's merocyanine in water-methanol mixtures

© 2017 Wiley Periodicals, Inc.

Détails bibliographiques
Publié dans:Journal of computational chemistry. - 1984. - 38(2017), 28 vom: 30. Okt., Seite 2411-2419
Auteur principal: Tanaka, Yuichi (Auteur)
Autres auteurs: Kawashima, Yukio, Yoshida, Norio, Nakano, Haruyuki
Format: Article en ligne
Langue:English
Publié: 2017
Accès à la collection:Journal of computational chemistry
Sujets:Journal Article Research Support, Non-U.S. Gov't 3D-RISM-SCF method Brooker's merocyanine preferential solvation solvatochromism
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520 |a The excitation energy of Brooker's merocyanine in water-methanol mixtures shows nonlinear behavior with respect to the mole fraction of methanol, and it was suggested that this behavior is related to preferential solvation by methanol. We investigated the origin of this behavior and its relation to preferential solvation using the three-dimensional reference interaction site model self-consistent field method and time-dependent density functional theory. The calculated excitation energies were in good agreement with the experimental behavior. Analysis of the coordination numbers revealed preferential solvation by methanol. The free energy component analysis implied that solvent reorganization and solvation entropy drive the preferential solvation by methanol, while the direct solute-solvent interaction promotes solvation by water. The difference in the preferential solvation effect on the ground and excited states causes the nonlinear excitation energy shift. © 2017 Wiley Periodicals, Inc 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a 3D-RISM-SCF method 
650 4 |a Brooker's merocyanine 
650 4 |a preferential solvation 
650 4 |a solvatochromism 
700 1 |a Kawashima, Yukio  |e verfasserin  |4 aut 
700 1 |a Yoshida, Norio  |e verfasserin  |4 aut 
700 1 |a Nakano, Haruyuki  |e verfasserin  |4 aut 
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