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Frutos-Puerto S, Jesús Colín M, Corchado JC, Luz Sánchez M, Elena Martín M, Aguilar MA. Photophysical and photochemical properties of 3-hydroxyflavone in ethanol solution: implicit vs explicit solvent models. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
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2
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An MP2/Molecular Dynamics study of the solvent effects on the conformational equilibrium of the glycine dipeptide. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Janz T, Güterbock M, Müller F, Quick M, Ioffe IN, Bischoff FA, Kovalenko SA. Evaluating the Solvent Stark Effect from Temperature‐Dependent Solvatochromic Shifts of Anthracene. Chemphyschem 2020; 21:610-615. [PMID: 31990122 PMCID: PMC7187296 DOI: 10.1002/cphc.202000010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Indexed: 11/12/2022]
Abstract
The solvent Stark effect on the spectral shifts of anthracene is studied with temperature‐dependent solvatochromic measurements. The Stark contribution ΔvStark to the absorption shift Δvp in polar solvents is measured to be ΔvStark=(53±35) cm−1, in reasonable agreement with dielectric continuum theory estimate of 28 cm−1, whereas the major shift Δvp∼300 cm−1 presumably originates from the solute quadrupole. We pay attention to the accurate correction of Δvp for the nonpolar contribution that is crucial when the shifts are modest in magnitude.
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Affiliation(s)
- Timais Janz
- Department of ChemistryHumboldt-Universität zu Berlin Brook-Taylor-Str. 2 D-12489 Berlin Germany
| | - Manuel Güterbock
- Department of ChemistryHumboldt-Universität zu Berlin Brook-Taylor-Str. 2 D-12489 Berlin Germany
| | - Fabian Müller
- Department of ChemistryHumboldt-Universität zu Berlin Brook-Taylor-Str. 2 D-12489 Berlin Germany
| | - Martin Quick
- Department of ChemistryHumboldt-Universität zu Berlin Brook-Taylor-Str. 2 D-12489 Berlin Germany
| | - Ilya N. Ioffe
- Department of ChemistryLomonosov Moscow State University Moscow Russia
| | - Florian A. Bischoff
- Department of ChemistryHumboldt-Universität zu Berlin Brook-Taylor-Str. 2 D-12489 Berlin Germany
| | - Sergey A. Kovalenko
- Department of ChemistryHumboldt-Universität zu Berlin Brook-Taylor-Str. 2 D-12489 Berlin Germany
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Barata-Morgado R, Sánchez ML, Muñoz-Losa A, Martín ME, Olivares Del Valle FJ, Aguilar MA. How Methylation Modifies the Photophysics of the Native All- trans-Retinal Protonated Schiff Base: A CASPT2/MD Study in Gas Phase and in Methanol. J Phys Chem A 2018; 122:3096-3106. [PMID: 29489369 DOI: 10.1021/acs.jpca.8b00773] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A comparison between the free-energy surfaces of the all- trans-retinal protonated Schiff base (RPSB) and its 10-methylated derivative in gas phase and methanol solution is performed at CASSCF//CASSCF and CASPT2//CASSCF levels. Solvent effects were included using the average solvent electrostatic potential from molecular dynamics method. This is a QM/MM (quantum mechanics/molecular mechanics) method that makes use of the mean field approximation. It is found that the methyl group bonded to C10 produces noticeable changes in the solution free-energy profile of the S1 excited state, mainly in the relative stability of the minimum energy conical intersections (MECIs) with respect to the Franck-Condon (FC) point. The conical intersections yielding the 9- cis and 11- cis isomers are stabilized while that yielding the 13- cis isomer is destabilized; in fact, it becomes inaccessible by excitation to S1. Furthermore, the planar S1 minimum is not present in the methylated compound. The solvent notably stabilizes the S2 excited state at the FC geometry. Therefore, if the S2 state has an effect on the photoisomerization dynamics, it must be because it permits the RPSB population to branch around the FC point. All these changes combine to speed up the photoisomerization in the 10-methylated compound with respect to the native compound.
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Affiliation(s)
- Rute Barata-Morgado
- Área de Química Física , University of Extremadura , Avda. Elvas s/n , Edif. José Ma Viguera Lobo 3a, planta, Badajoz 06006 , Spain
| | - M Luz Sánchez
- Área de Química Física , University of Extremadura , Avda. Elvas s/n , Edif. José Ma Viguera Lobo 3a, planta, Badajoz 06006 , Spain
| | - Aurora Muñoz-Losa
- Dpto. Didáctica de las Ciencias Experimentales y Matemáticas, Facultad de Formación del Profesorado , University of Extremadura , Avda. Universidad s/n , Cáceres 10003 , Spain
| | - M Elena Martín
- Área de Química Física , University of Extremadura , Avda. Elvas s/n , Edif. José Ma Viguera Lobo 3a, planta, Badajoz 06006 , Spain
| | - Francisco J Olivares Del Valle
- Área de Química Física , University of Extremadura , Avda. Elvas s/n , Edif. José Ma Viguera Lobo 3a, planta, Badajoz 06006 , Spain
| | - Manuel A Aguilar
- Área de Química Física , University of Extremadura , Avda. Elvas s/n , Edif. José Ma Viguera Lobo 3a, planta, Badajoz 06006 , Spain
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García-Prieto FF, Aguilar MA, Galván IF, Muñoz-Losa A, Olivares del Valle FJ, Sánchez ML, Martín ME. Substituent and Solvent Effects on the UV–vis Absorption Spectrum of the Photoactive Yellow Protein Chromophore. J Phys Chem A 2015; 119:5504-14. [DOI: 10.1021/acs.jpca.5b01434] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- F. Fernández García-Prieto
- Área
de Química Física, University of Extremadura, Avda.
Elvas s/n, José M.a Viguera Lobo Building, 06071 Badajoz, Spain
| | - M. A. Aguilar
- Área
de Química Física, University of Extremadura, Avda.
Elvas s/n, José M.a Viguera Lobo Building, 06071 Badajoz, Spain
| | - I. Fdez. Galván
- Department
of Chemistry−Ångström, The Theoretical Chemistry
Programme, Uppsala University, P.O. Box 518, SE-751 20 Uppsala, Sweden
| | - A. Muñoz-Losa
- Área
de Química Física, University of Extremadura, Avda.
Elvas s/n, José M.a Viguera Lobo Building, 06071 Badajoz, Spain
| | - F. J. Olivares del Valle
- Área
de Química Física, University of Extremadura, Avda.
Elvas s/n, José M.a Viguera Lobo Building, 06071 Badajoz, Spain
| | - M. L. Sánchez
- Área
de Química Física, University of Extremadura, Avda.
Elvas s/n, José M.a Viguera Lobo Building, 06071 Badajoz, Spain
| | - M. E. Martín
- Área
de Química Física, University of Extremadura, Avda.
Elvas s/n, José M.a Viguera Lobo Building, 06071 Badajoz, Spain
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García-Prieto FF, Galván IF, Muñoz-Losa A, Aguilar MA, Martín ME. Solvent Effects on the Absorption Spectra of the para-Coumaric Acid Chromophore in Its Different Protonation Forms. J Chem Theory Comput 2013; 9:4481-94. [DOI: 10.1021/ct400145z] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Francisco F. García-Prieto
- Química
Física. Edif. José María Viguera Lobo, Universidad de Extremadura, Avda. de
Elvas s/n, 06071 Badajoz, Spain
| | - Ignacio Fdez. Galván
- Química
Física. Edif. José María Viguera Lobo, Universidad de Extremadura, Avda. de
Elvas s/n, 06071 Badajoz, Spain
- Department
of Chemistry, Ångström, The Theoretical Chemistry
Programme, Uppsala University, P.O. Box 518, SE-751 20 Uppsala, Sweden
| | - Aurora Muñoz-Losa
- Química
Física. Edif. José María Viguera Lobo, Universidad de Extremadura, Avda. de
Elvas s/n, 06071 Badajoz, Spain
| | - Manuel A. Aguilar
- Química
Física. Edif. José María Viguera Lobo, Universidad de Extremadura, Avda. de
Elvas s/n, 06071 Badajoz, Spain
| | - M. Elena Martín
- Química
Física. Edif. José María Viguera Lobo, Universidad de Extremadura, Avda. de
Elvas s/n, 06071 Badajoz, Spain
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Muñoz-Losa A, Fdez. Galván I, Aguilar MA, Martín ME. Simultaneous Solvent and Counterion Effects on the Absorption Properties of a Model of the Rhodopsin Chromophore. J Chem Theory Comput 2013; 9:1548-56. [DOI: 10.1021/ct301090v] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Aurora Muñoz-Losa
- Química
Física, Universidad de Extremadura, Avda. de Elvas s/n, Badajoz,
06071, Spain
| | - Ignacio Fdez. Galván
- Química
Física, Universidad de Extremadura, Avda. de Elvas s/n, Badajoz,
06071, Spain
| | - Manuel A. Aguilar
- Química
Física, Universidad de Extremadura, Avda. de Elvas s/n, Badajoz,
06071, Spain
| | - M. Elena Martín
- Química
Física, Universidad de Extremadura, Avda. de Elvas s/n, Badajoz,
06071, Spain
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Wink C, Detert H. Donor-substituted distyrylpyrazines: influence of steric congestion on UV-Vis absorption and fluorescence. J PHYS ORG CHEM 2012. [DOI: 10.1002/poc.2978] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Christoph Wink
- Institut für Organische Chemie; Duesbergweg 10-14; D-55099; Mainz; Germany
| | - Heiner Detert
- Institut für Organische Chemie; Duesbergweg 10-14; D-55099; Mainz; Germany
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Theoretical and computational chemistry in Spain. Theor Chem Acc 2011. [DOI: 10.1007/s00214-011-0895-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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