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Jodra A, Marazzi M, Frutos LM, García-Iriepa C. Modulating Efficiency and Color of Thermally Activated Delayed Fluorescence by Rationalizing the Substitution Effect. J Chem Theory Comput 2024. [PMID: 38738688 DOI: 10.1021/acs.jctc.4c00009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
Thermally activated delayed fluorescence (TADF) constitutes the process by which third-generation organic light-emitting diodes (OLEDs) are being designed and produced. Despite several years of trial-and-error attempts, mainly driven by chemical intuition about how to improve a certain aspect of the process, few studies focused on the in-depth description of its two key properties: efficiency of the T1 → S1 intersystem crossing and further S1 → S0 emission. Here, by means of a newly developed theoretical formalism, we propose a systematic rationalization of the substituent effect in a paradigmatic class of OLED compounds, based on phenothiazine-dibenzothiophene-S,S-dioxide, known as PTZ-DBTO2. Our methodology allows to discern among geometrical and electronic effects induced by the substituent, deeply understanding the relationships existing between charge transfer, spin density, geometrical deformations, and energy modulations between electronic states. By our results, we can finally elucidate, depending on the substituent, the fate of the overall TADF process, quantitatively assessing its efficiency and predicting the color emission. Moreover, the general terms by which this methodology was developed allow its application to any chromophore of interest.
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Affiliation(s)
- Alejandro Jodra
- Departamento de Química Analítica, Química Física e Ingeniería Química, Grupo de Reactividad y Estructura Molecular (RESMOL), Universidad de Alcalá, Ctra. Madrid-Barcelona, Km 33.600, Alcalá de Henares, Madrid 28871, Spain
| | - Marco Marazzi
- Departamento de Química Analítica, Química Física e Ingeniería Química, Grupo de Reactividad y Estructura Molecular (RESMOL), Universidad de Alcalá, Ctra. Madrid-Barcelona, Km 33.600, Alcalá de Henares, Madrid 28871, Spain
- Instituto de Investigación Química "Andrés M. del Río" (IQAR), Universidad de Alcalá, Ctra. Madrid-Barcelona, Km 33.600, Alcalá de Henares, Madrid 28871, Spain
| | - Luis Manuel Frutos
- Departamento de Química Analítica, Química Física e Ingeniería Química, Grupo de Reactividad y Estructura Molecular (RESMOL), Universidad de Alcalá, Ctra. Madrid-Barcelona, Km 33.600, Alcalá de Henares, Madrid 28871, Spain
- Instituto de Investigación Química "Andrés M. del Río" (IQAR), Universidad de Alcalá, Ctra. Madrid-Barcelona, Km 33.600, Alcalá de Henares, Madrid 28871, Spain
| | - Cristina García-Iriepa
- Departamento de Química Analítica, Química Física e Ingeniería Química, Grupo de Reactividad y Estructura Molecular (RESMOL), Universidad de Alcalá, Ctra. Madrid-Barcelona, Km 33.600, Alcalá de Henares, Madrid 28871, Spain
- Instituto de Investigación Química "Andrés M. del Río" (IQAR), Universidad de Alcalá, Ctra. Madrid-Barcelona, Km 33.600, Alcalá de Henares, Madrid 28871, Spain
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2
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Jodra A, García-Iriepa C, Frutos LM. An Algorithm Predicting the Optimal Mechanical Response of Electronic Energy Difference. J Chem Theory Comput 2023; 19:6392-6401. [PMID: 37669417 PMCID: PMC10536970 DOI: 10.1021/acs.jctc.3c00490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Indexed: 09/07/2023]
Abstract
The use of mechanical forces at the molecular level has been shown to be an interesting tool for modulating different chemical and physical molecular properties. The so-called covalent mechanochemistry deals with the application of precise mechanical forces that induce specific changes in the structure, stability, reactivity, and other physical properties. The use of this kind of force to modulate photophysical properties and photochemical reactivity has also been studied. Nevertheless, the general problem of mechanical modulation of the energy gap between two electronic states has been addressed only with the development of simple theoretical models. Here, we develop and implement an algorithm providing the Largest energy Gap variation with Minimal mechanical Force (LGMF) that allows the determination of the optimal mechanical forces tuning the electronic energy gap, as well as to identify the maximum mechanical response of a molecular system to the application of any mechanical stimulus. The algorithm has been implemented for diverse molecular systems showing different degrees of flexibility. The phyton code of the algorithm is available in a public repository.
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Affiliation(s)
- Alejandro Jodra
- Departamento
de Química Analítica, Química Física e
Ingeniería Química, y Grupo de Reactividad y Estructura
Molecular (RESMOL), Universidad de Alcalá, Alcalá de Henares, 28806 Madrid, Spain
| | - Cristina García-Iriepa
- Departamento
de Química Analítica, Química Física e
Ingeniería Química, y Grupo de Reactividad y Estructura
Molecular (RESMOL), Universidad de Alcalá, Alcalá de Henares, 28806 Madrid, Spain
- Instituto
de Investigación Química ‘‘Andrés
M. del Río’’ (IQAR), Universidad de Alcalá, Alcalá de Henares, 28806 Madrid, Spain
| | - Luis Manuel Frutos
- Departamento
de Química Analítica, Química Física e
Ingeniería Química, y Grupo de Reactividad y Estructura
Molecular (RESMOL), Universidad de Alcalá, Alcalá de Henares, 28806 Madrid, Spain
- Instituto
de Investigación Química ‘‘Andrés
M. del Río’’ (IQAR), Universidad de Alcalá, Alcalá de Henares, 28806 Madrid, Spain
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3
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Abstract
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In this work, we demonstrate that the forbidden oxirane-type
photoproduct
(the cyclopropyl ketone photoproduct is the allowed one) of the oxa-di-π-methane
photorearrangement can be obtained by mechanochemical control of the
photoreactions. This control is achieved by the application of simple
force pairs rationally chosen. By analyzing in detail the effect of
the applied forces on this photoreaction, it comes to light that the
mechanical action affects the diverse properties of the oxa-di-π-methane
rearrangement, modifying all the steps of the reaction: (i) the initial
ground-state conformers’ distribution becomes affected; (ii)
the new conformational population makes the triplet excitation process
to be changed, responding to the magnitude of the applied force; (iii)
the stability of the different intermediates along the triplet pathway
also becomes affected, changing the dynamical behavior of the system
and the reaction kinetics; and (iv) the intersystem crossing also
becomes strongly affected, making the forbidden oxirane-type photoproduct
to decay more efficiently to the ground state. All these changes provide
a complex scenario where a detailed study of the effect of applied
forces is necessary in order to predict its overall effect on the
photoreactivity.
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Affiliation(s)
- Alejandro Jodra
- Universidad de Alcalá, Departamento de Química Analítica, Química Física e Ingeniería Química, Grupo de Reactividad y Estructura Molecular (RESMOL), Alcalá de Henares 28806, Madrid, Spain
| | - Cristina García-Iriepa
- Universidad de Alcalá, Departamento de Química Analítica, Química Física e Ingeniería Química, Grupo de Reactividad y Estructura Molecular (RESMOL), Alcalá de Henares 28806, Madrid, Spain.,Instituto de Investigación Química ''Andrés M. del Río'' (IQAR), Universidad de Alcalá, Alcalá de Henares 28806, Madrid, Spain
| | - Luis Manuel Frutos
- Universidad de Alcalá, Departamento de Química Analítica, Química Física e Ingeniería Química, Grupo de Reactividad y Estructura Molecular (RESMOL), Alcalá de Henares 28806, Madrid, Spain.,Instituto de Investigación Química ''Andrés M. del Río'' (IQAR), Universidad de Alcalá, Alcalá de Henares 28806, Madrid, Spain
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4
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Zapata F, Nucci M, Castaño O, Marazzi M, Frutos LM. Thermal and Mechanochemical Tuning of the Porphyrin Singlet-Triplet Gap for Selective Energy Transfer Processes: A Molecular Dynamics Approach. J Chem Theory Comput 2021; 17:5429-5439. [PMID: 34351751 PMCID: PMC8919258 DOI: 10.1021/acs.jctc.1c00291] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Molecular dynamics simulations provide fundamental knowledge on the reaction mechanism of a given simulated molecular process. Nevertheless, other methodologies based on the "static" exploration of potential energy surfaces are usually employed to firmly provide the reaction coordinate directly related to the reaction mechanism, as is the case in intrinsic reaction coordinates for thermally activated reactions. Photoinduced processes in molecular systems can also be studied with these two strategies, as is the case in the triplet energy transfer process. Triplet energy transfer is a fundamental photophysical process in photochemistry and photobiology, being for instance involved in photodynamic therapy, when generating the highly reactive singlet oxygen species. Here, we study the triplet energy transfer process between porphyrin, a prototypical energy transfer donor, and different biologically relevant acceptors, including molecular oxygen, carotenoids, and rhodopsin. The results obtained by means of nanosecond time-scale molecular dynamics simulations are compared to the "static" determination of the reaction coordinate for such a thermal process, leading to the distortions determining an effective energy transfer. This knowledge was finally applied to propose porphyrin derivatives for producing the required structural modifications in order to tune their singlet-triplet energy gap, thus introducing a mechanochemical description of the mechanism.
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Affiliation(s)
- Felipe Zapata
- Departamento de Química Analítica, Química Física e Ingeniería Química, Universidad de Alcalá, Ctra. Madrid-Barcelona, Km 33.600, Alcalá de Henares, Madrid E28805, Spain
| | - Martina Nucci
- Departamento de Química Analítica, Química Física e Ingeniería Química, Universidad de Alcalá, Ctra. Madrid-Barcelona, Km 33.600, Alcalá de Henares, Madrid E28805, Spain
| | - Obis Castaño
- Departamento de Química Analítica, Química Física e Ingeniería Química, Universidad de Alcalá, Ctra. Madrid-Barcelona, Km 33.600, Alcalá de Henares, Madrid E28805, Spain
| | - Marco Marazzi
- Departamento de Química Analítica, Química Física e Ingeniería Química, Universidad de Alcalá, Ctra. Madrid-Barcelona, Km 33.600, Alcalá de Henares, Madrid E28805, Spain.,Instituto de Investigación Química "Andrés M. del Rio" (IQAR), Universidad de Alcalá, Ctra. Madrid-Barcelona, Km 33.600, Alcalá de Henares, Madrid E-28805, Spain
| | - Luis Manuel Frutos
- Departamento de Química Analítica, Química Física e Ingeniería Química, Universidad de Alcalá, Ctra. Madrid-Barcelona, Km 33.600, Alcalá de Henares, Madrid E28805, Spain.,Instituto de Investigación Química "Andrés M. del Rio" (IQAR), Universidad de Alcalá, Ctra. Madrid-Barcelona, Km 33.600, Alcalá de Henares, Madrid E-28805, Spain
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5
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Abstract
Controlling the thermochemistry and kinetics of chemical reactions is a central problem in chemistry. Among factors permitting this control, the substituent effect constitutes a remarkable example. Here, we develop a model accounting for the effect of a substituent on the potential energy surface of the substrate (i.e., substituted molecule). We show that substituents affect the substrate by exerting forces on the nuclei. These substituent-induced forces are able to develop a work when the molecule follows a given reaction path. By applying a simple mechanical model, it becomes possible to quantify this work, which corresponds to the energy variation due to the effect of the substituent along a specific pathway. Our model accounts for the Hammett equation as a particular case, providing the first non-empirical scale for the σ and ρ constants, which, in the developed model, are related to the forces exerted by the substituents (σ) and the reaction path length (ρ), giving their product (σ · ρ) the well-known variation on the reaction energy due to the substituent.
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Affiliation(s)
- Miguel Ángel Fernández-González
- Departamento de Química Analítica, Química Física e Ingeniería Química, Universidad de Alcalá, E- 28871, Alcalá de Henares, Madrid, Spain
| | - Luis Manuel Frutos
- Departamento de Química Analítica, Química Física e Ingeniería Química, and Instituto de Investigación Química "Andrés M. del Río" (IQAR), Universidad de Alcalá, E- 28871, Alcalá de Henares, Madrid, Spain
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6
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Dudev T, Frutos LM, Castaño O. How mechanical forces can modulate the metal affinity and selectivity of metal binding sites in proteins. Metallomics 2020; 12:363-370. [DOI: 10.1039/c9mt00283a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The results obtained reveal that applying mechanical forces with a given strength and directionality can modulate the metal affinity and selectivity of metal binding sites in metalloproteins.
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Affiliation(s)
- Todor Dudev
- Faculty of Chemistry and Pharmacy
- Sofia University
- 1164 Sofia
- Bulgaria
| | - Luis Manuel Frutos
- Departamento de Química Analítica
- Química Física e Ingeniería Química
- Universidad de Alcala
- Madrid
- Spain
| | - Obis Castaño
- Departamento de Química Analítica
- Química Física e Ingeniería Química
- Universidad de Alcala
- Madrid
- Spain
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7
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Fdez. Galván I, Vacher M, Alavi A, Angeli C, Aquilante F, Autschbach J, Bao JJ, Bokarev SI, Bogdanov NA, Carlson RK, Chibotaru LF, Creutzberg J, Dattani N, Delcey MG, Dong SS, Dreuw A, Freitag L, Frutos LM, Gagliardi L, Gendron F, Giussani A, González L, Grell G, Guo M, Hoyer CE, Johansson M, Keller S, Knecht S, Kovačević G, Källman E, Li Manni G, Lundberg M, Ma Y, Mai S, Malhado JP, Malmqvist PÅ, Marquetand P, Mewes SA, Norell J, Olivucci M, Oppel M, Phung QM, Pierloot K, Plasser F, Reiher M, Sand AM, Schapiro I, Sharma P, Stein CJ, Sørensen LK, Truhlar DG, Ugandi M, Ungur L, Valentini A, Vancoillie S, Veryazov V, Weser O, Wesołowski TA, Widmark PO, Wouters S, Zech A, Zobel JP, Lindh R. OpenMolcas: From Source Code to Insight. J Chem Theory Comput 2019; 15:5925-5964. [DOI: 10.1021/acs.jctc.9b00532] [Citation(s) in RCA: 399] [Impact Index Per Article: 79.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ignacio Fdez. Galván
- Department of Chemistry − Ångström Laboratory, Uppsala University, P.O. Box 538, SE-751 21 Uppsala, Sweden
- Department of Chemistry − BMC, Uppsala University, P.O. Box 576, SE-751 23 Uppsala, Sweden
| | - Morgane Vacher
- Department of Chemistry − Ångström Laboratory, Uppsala University, P.O. Box 538, SE-751 21 Uppsala, Sweden
| | - Ali Alavi
- Max Planck Institut für Festkörperforschung, Heisenbergstraße 1, 70569 Stuttgart, Germany
| | - Celestino Angeli
- Dipartimento di Scienze Chimiche e Farmaceutiche, Università di Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy
| | - Francesco Aquilante
- Département de Chimie Physique, Université de Genève, 30 quai Ernest-Ansermet, CH-1211 Genève 4, Switzerland
| | - Jochen Autschbach
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, New York 14260-3000, United States
| | - Jie J. Bao
- Department of Chemistry, Chemical Theory Center, and Minnesota Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Sergey I. Bokarev
- Institut für Physik, Universität Rostock, Albert-Einstein-Straße 23-24, 18059 Rostock, Germany
| | - Nikolay A. Bogdanov
- Max Planck Institut für Festkörperforschung, Heisenbergstraße 1, 70569 Stuttgart, Germany
| | - Rebecca K. Carlson
- Department of Chemistry, Chemical Theory Center, and Minnesota Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Liviu F. Chibotaru
- Theory of Nanomaterials Group, University of Leuven, Celestijnenlaan 200F, Leuven 3001, Belgium
| | - Joel Creutzberg
- Department of Physics, AlbaNova University Center, Stockholm University, SE-106 91 Stockholm, Sweden
- Division of Theoretical Chemistry, Kemicentrum, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
| | - Nike Dattani
- Harvard Smithsonian Center for Astrophysics, Cambridge, Massachusetts 02138, United States
| | - Mickaël G. Delcey
- Department of Chemistry − Ångström Laboratory, Uppsala University, P.O. Box 538, SE-751 21 Uppsala, Sweden
| | - Sijia S. Dong
- Department of Chemistry, Chemical Theory Center, and Minnesota Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Andreas Dreuw
- Interdisciplinary Center for Scientific Computing, Heidelberg University, Im Neuenheimer Feld 205 A, 69120 Heidelberg, Germany
| | - Leon Freitag
- Laboratorium für Physikalische Chemie, ETH Zürich, Vladimir-Prelog-Weg 2, 8093 Zürich, Switzerland
| | - Luis Manuel Frutos
- Departamento de Química Analítica, Química Física e Ingeniería Química, and Instituto de Investigación Química “Andrés M. del Río”, Universidad de Alcalá, E-28871 Alcalá de Henares, Madrid, Spain
| | - Laura Gagliardi
- Department of Chemistry, Chemical Theory Center, and Minnesota Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Frédéric Gendron
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, New York 14260-3000, United States
| | - Angelo Giussani
- Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, United Kingdom
- Instituto de Ciencia Molecular, Universitat de València, Apartado 22085, ES-46071 Valencia, Spain
| | - Leticia González
- Institute of Theoretical Chemistry, Faculty of Chemistry, University of Vienna, Währinger Straße 17, 1090 Vienna, Austria
| | - Gilbert Grell
- Institut für Physik, Universität Rostock, Albert-Einstein-Straße 23-24, 18059 Rostock, Germany
| | - Meiyuan Guo
- Department of Chemistry − Ångström Laboratory, Uppsala University, P.O. Box 538, SE-751 21 Uppsala, Sweden
| | - Chad E. Hoyer
- Department of Chemistry, Chemical Theory Center, and Minnesota Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Marcus Johansson
- Division of Theoretical Chemistry, Kemicentrum, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
| | - Sebastian Keller
- Laboratorium für Physikalische Chemie, ETH Zürich, Vladimir-Prelog-Weg 2, 8093 Zürich, Switzerland
| | - Stefan Knecht
- Laboratorium für Physikalische Chemie, ETH Zürich, Vladimir-Prelog-Weg 2, 8093 Zürich, Switzerland
| | - Goran Kovačević
- Division of Materials Physics, Ruđer Bošković Institute, P.O.B. 180, Bijenička 54, HR-10002 Zagreb, Croatia
| | - Erik Källman
- Department of Chemistry − Ångström Laboratory, Uppsala University, P.O. Box 538, SE-751 21 Uppsala, Sweden
| | - Giovanni Li Manni
- Max Planck Institut für Festkörperforschung, Heisenbergstraße 1, 70569 Stuttgart, Germany
| | - Marcus Lundberg
- Department of Chemistry − Ångström Laboratory, Uppsala University, P.O. Box 538, SE-751 21 Uppsala, Sweden
| | - Yingjin Ma
- Laboratorium für Physikalische Chemie, ETH Zürich, Vladimir-Prelog-Weg 2, 8093 Zürich, Switzerland
| | - Sebastian Mai
- Institute of Theoretical Chemistry, Faculty of Chemistry, University of Vienna, Währinger Straße 17, 1090 Vienna, Austria
| | - João Pedro Malhado
- Department of Chemistry, Imperial College London, London SW7 2AZ, United Kingdom
| | - Per Åke Malmqvist
- Division of Theoretical Chemistry, Kemicentrum, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
| | - Philipp Marquetand
- Institute of Theoretical Chemistry, Faculty of Chemistry, University of Vienna, Währinger Straße 17, 1090 Vienna, Austria
| | - Stefanie A. Mewes
- Interdisciplinary Center for Scientific Computing, Heidelberg University, Im Neuenheimer Feld 205 A, 69120 Heidelberg, Germany
- Centre for Theoretical Chemistry and Physics, The New Zealand Institute for Advanced Study (NZIAS), Massey University Albany, Private Bag
102904, Auckland 0632, New Zealand
| | - Jesper Norell
- Department of Physics, AlbaNova University Center, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Massimo Olivucci
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, via A. Moro 2, 53100 Siena, Italy
- Department of Chemistry, Bowling Green State University, Bowling Green, Ohio 43403, United States
- USIAS and Institut de Physique et Chimie des Matériaux de Strasbourg, Université de Strasbourg-CNRS, 67034 Strasbourg, France
| | - Markus Oppel
- Institute of Theoretical Chemistry, Faculty of Chemistry, University of Vienna, Währinger Straße 17, 1090 Vienna, Austria
| | - Quan Manh Phung
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven 3001, Belgium
| | - Kristine Pierloot
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven 3001, Belgium
| | - Felix Plasser
- Department of Chemistry, Loughborough University, Loughborough LE11 3TU, United Kingdom
| | - Markus Reiher
- Laboratorium für Physikalische Chemie, ETH Zürich, Vladimir-Prelog-Weg 2, 8093 Zürich, Switzerland
| | - Andrew M. Sand
- Department of Chemistry, Chemical Theory Center, and Minnesota Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Igor Schapiro
- Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, Israel
| | - Prachi Sharma
- Department of Chemistry, Chemical Theory Center, and Minnesota Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Christopher J. Stein
- Laboratorium für Physikalische Chemie, ETH Zürich, Vladimir-Prelog-Weg 2, 8093 Zürich, Switzerland
| | - Lasse Kragh Sørensen
- Department of Chemistry − Ångström Laboratory, Uppsala University, P.O. Box 538, SE-751 21 Uppsala, Sweden
| | - Donald G. Truhlar
- Department of Chemistry, Chemical Theory Center, and Minnesota Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Mihkel Ugandi
- Department of Chemistry − Ångström Laboratory, Uppsala University, P.O. Box 538, SE-751 21 Uppsala, Sweden
| | - Liviu Ungur
- Department of Chemistry, National University of Singapore, 117543 Singapore
| | - Alessio Valentini
- Theoretical Physical Chemistry, Research Unit MolSys, Allée du 6 Août, 11, 4000 Liège, Belgium
| | - Steven Vancoillie
- Division of Theoretical Chemistry, Kemicentrum, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
| | - Valera Veryazov
- Division of Theoretical Chemistry, Kemicentrum, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
| | - Oskar Weser
- Max Planck Institut für Festkörperforschung, Heisenbergstraße 1, 70569 Stuttgart, Germany
| | - Tomasz A. Wesołowski
- Département de Chimie Physique, Université de Genève, 30 quai Ernest-Ansermet, CH-1211 Genève 4, Switzerland
| | - Per-Olof Widmark
- Division of Theoretical Chemistry, Kemicentrum, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
| | - Sebastian Wouters
- Brantsandpatents, Pauline van Pottelsberghelaan 24, 9051 Sint-Denijs-Westrem, Belgium
| | - Alexander Zech
- Département de Chimie Physique, Université de Genève, 30 quai Ernest-Ansermet, CH-1211 Genève 4, Switzerland
| | - J. Patrick Zobel
- Division of Theoretical Chemistry, Kemicentrum, Lund University, P.O. Box 124, SE-221 00 Lund, Sweden
| | - Roland Lindh
- Department of Chemistry − BMC, Uppsala University, P.O. Box 576, SE-751 23 Uppsala, Sweden
- Uppsala Center for Computational Chemistry (UC3), Uppsala University, P.O. Box 596, SE-751 24 Uppsala, Sweden
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8
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Affiliation(s)
- Alessio Valentini
- Departamento de Química Analítica, Química Física e Ingeniería Química, Unidad de Química FísicaUniversidad de Alcalá Ctra. Madrid-Barcelona Km. 33,600 E-28871 Alcalá de Henares, Madrid Spain
- Department of Biotechnology, Chemistry and PharmacyUniversity of Siena via A. Moro 2 53100 Siena Italy
- Theoretical Physical Chemistry, Research Unit MolSysUniversité de Liège Allée du 6 Aôut, 11 4000 Liège Belgium
| | - Martina Nucci
- Departamento de Química Analítica, Química Física e Ingeniería Química, Unidad de Química FísicaUniversidad de Alcalá Ctra. Madrid-Barcelona Km. 33,600 E-28871 Alcalá de Henares, Madrid Spain
| | - Luis Manuel Frutos
- Departamento de Química Analítica, Química Física e Ingeniería Química, Unidad de Química FísicaUniversidad de Alcalá Ctra. Madrid-Barcelona Km. 33,600 E-28871 Alcalá de Henares, Madrid Spain
- Instituto de Investigación Química “Andrés M. del Río” (IQAR)Universidad de Alcalá E-28871 Alcalá de Henares, Madrid Spain
| | - Marco Marazzi
- Departamento de Química Analítica, Química Física e Ingeniería Química, Unidad de Química FísicaUniversidad de Alcalá Ctra. Madrid-Barcelona Km. 33,600 E-28871 Alcalá de Henares, Madrid Spain
- Instituto de Investigación Química “Andrés M. del Río” (IQAR)Universidad de Alcalá E-28871 Alcalá de Henares, Madrid Spain
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9
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García-Iriepa C, Sampedro D, Mendicuti F, Léonard J, Frutos LM. Photoreactivity Control Mediated by Molecular Force Probes in Stilbene. J Phys Chem Lett 2019; 10:1063-1067. [PMID: 30707586 DOI: 10.1021/acs.jpclett.8b03802] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
We report theoretical and experimental evidence showing that photochemical reactivity of a chromophore can be modified by applying mechanical forces via molecular force probes. This mechanical action permits us to modulate main photochemical properties, such as fluorescence yield, excited-state lifetime, or photoisomerization quantum yield. The effect of molecular force probes can be rationalized in terms of simple mechanochemical models, establishing a qualitative framework for understanding the mechanical control of photoreactivity in stilbenes.
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Affiliation(s)
- Cristina García-Iriepa
- Departamento de Química Analítica, Química Física e Ingeniería Química , Universidad de Alcalá , E-28871 Alcalá de Henares, Madrid , Spain
- Departamento de Química, Centro de Investigación en Síntesis Química (CISQ) , Universidad de La Rioja , E-26006 Logroño , Spain
| | - Diego Sampedro
- Departamento de Química, Centro de Investigación en Síntesis Química (CISQ) , Universidad de La Rioja , E-26006 Logroño , Spain
| | - Francisco Mendicuti
- Departamento de Química Analítica, Química Física e Ingeniería Química , Universidad de Alcalá , E-28871 Alcalá de Henares, Madrid , Spain
- Instituto de Investigación Química "Andrés M. del Río" , Universidad de Alcalá , 28805 Alcalá de Henares, Madrid , Spain
| | - Jérémie Léonard
- Institut de Physique et Chimie des Matériaux de Strasbourg , Université de Strasbourg , CNRS, UMR 7504 and Labex NIE, 67034 Strasbourg , France
| | - Luis Manuel Frutos
- Departamento de Química Analítica, Química Física e Ingeniería Química , Universidad de Alcalá , E-28871 Alcalá de Henares, Madrid , Spain
- Instituto de Investigación Química "Andrés M. del Río" , Universidad de Alcalá , 28805 Alcalá de Henares, Madrid , Spain
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10
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Abengózar A, Fernández-González MA, Sucunza D, Frutos LM, Salgado A, García-García P, Vaquero JJ. C-H Functionalization of BN-Aromatics Promoted by Addition of Organolithium Compounds to the Boron Atom. Org Lett 2018; 20:4902-4906. [PMID: 30070487 DOI: 10.1021/acs.orglett.8b02040] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Addition of an organolithium compound to a BN-phenanthrene with embedded B and N atoms is proposed to result in coordination of RLi to the boron atom. This coordination, supported by NMR spectroscopy and DFT calculations, increases the nucleophilicity of the system in the β position to the N atom and is therefore a useful tool for promoting regioselective C-H functionalization of BN aromatics.
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Affiliation(s)
- Alberto Abengózar
- Departamento de Química Orgánica y Química Inorgánica, Instituto de Investigación Química "Andrés M. del Río" (IQAR) , Universidad de Alcalá , 28805 Alcalá de Henares , Madrid , Spain
| | - Miguel Angel Fernández-González
- Departamento de Química Analítica, Química Física e Ingeniería Química, Instituto de Investigación Química "Andrés M. del Río" (IQAR) , Universidad de Alcalá , 28805 Alcalá de Henares , Madrid , Spain
| | - David Sucunza
- Departamento de Química Orgánica y Química Inorgánica, Instituto de Investigación Química "Andrés M. del Río" (IQAR) , Universidad de Alcalá , 28805 Alcalá de Henares , Madrid , Spain
| | - Luis Manuel Frutos
- Departamento de Química Analítica, Química Física e Ingeniería Química, Instituto de Investigación Química "Andrés M. del Río" (IQAR) , Universidad de Alcalá , 28805 Alcalá de Henares , Madrid , Spain
| | - Antonio Salgado
- Centro de Espectroscopía de Resonancia Magnética Nuclear (CERMN), CAI Químicas , Universidad de Alcalá , 28805 Alcalá de Henares , Madrid , Spain
| | - Patricia García-García
- Departamento de Química Orgánica y Química Inorgánica, Instituto de Investigación Química "Andrés M. del Río" (IQAR) , Universidad de Alcalá , 28805 Alcalá de Henares , Madrid , Spain
| | - Juan J Vaquero
- Departamento de Química Orgánica y Química Inorgánica, Instituto de Investigación Química "Andrés M. del Río" (IQAR) , Universidad de Alcalá , 28805 Alcalá de Henares , Madrid , Spain
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11
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12
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Vacher M, Farahani P, Valentini A, Frutos LM, Karlsson HO, Fdez Galván I, Lindh R. How Do Methyl Groups Enhance the Triplet Chemiexcitation Yield of Dioxetane? J Phys Chem Lett 2017; 8:3790-3794. [PMID: 28749694 DOI: 10.1021/acs.jpclett.7b01668] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Chemiluminescence is the emission of light as a result of a nonadiabatic chemical reaction. The present work is concerned with understanding the yield of chemiluminescence, in particular how it dramatically increases upon methylation of 1,2-dioxetane. Both ground-state and nonadiabatic dynamics (including singlet excited states) of the decomposition reaction of various methyl-substituted dioxetanes have been simulated. Methyl-substitution leads to a significant increase in the dissociation time scale. The rotation around the O-C-C-O dihedral angle is slowed; thus, the molecular system stays longer in the "entropic trap" region. A simple kinetic model is proposed to explain how this leads to a higher chemiluminescence yield. These results have important implications for the design of efficient chemiluminescent systems in medical, environmental, and industrial applications.
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Affiliation(s)
- Morgane Vacher
- Department of Chemistry - Ångström, The Theoretical Chemistry Programme, Uppsala University , Box 538, 751 21 Uppsala, Sweden
| | - Pooria Farahani
- Instituto de Química, Departamento de Química Fundamental, Universidade de São Paulo , C.P. 05508-000, São Paulo, Brazil
| | - Alessio Valentini
- Département de Chimie, Université de Liège , Allée du 6 Août, 11, 4000 Liège, Belgium
| | - Luis Manuel Frutos
- Departamento de Química Física, Universidad de Alcalá , E-28871 Alcalá de Henares, Madrid, Spain
| | - Hans O Karlsson
- Department of Chemistry - Ångström, The Theoretical Chemistry Programme, Uppsala University , Box 538, 751 21 Uppsala, Sweden
| | - Ignacio Fdez Galván
- Department of Chemistry - Ångström, The Theoretical Chemistry Programme, Uppsala University , Box 538, 751 21 Uppsala, Sweden
| | - Roland Lindh
- Department of Chemistry - Ångström, The Theoretical Chemistry Programme, Uppsala University , Box 538, 751 21 Uppsala, Sweden
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13
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Abengózar A, García-García P, Sucunza D, Frutos LM, Castaño O, Sampedro D, Pérez-Redondo A, Vaquero JJ. Synthesis, Optical Properties, and Regioselective Functionalization of 4a-Aza-10a-boraphenanthrene. Org Lett 2017; 19:3458-3461. [PMID: 28605913 DOI: 10.1021/acs.orglett.7b01435] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
4a-Aza-10a-boraphenanthrene has been synthesized in only four steps from commercially available materials with a remarkable overall yield of 62%. In contrast to other BN-isosteres of phenathrene, this isomer is weakly fluorescent, which has been explained by means of computational studies that found a low energy conical intersection for the nonradiative deactivation of the excited state. Moreover, a completely regioselective functionalization of 4a-aza-10a-boraphenanthrene at C-1 by reaction with activated electrophiles has been achieved.
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Affiliation(s)
- Alberto Abengózar
- Departamento de Química Orgánica y Química Inorgánica, Universidad de Alcalá , 28871 Alcalá de Henares, Madrid, Spain
| | - Patricia García-García
- Departamento de Química Orgánica y Química Inorgánica, Universidad de Alcalá , 28871 Alcalá de Henares, Madrid, Spain
| | - David Sucunza
- Departamento de Química Orgánica y Química Inorgánica, Universidad de Alcalá , 28871 Alcalá de Henares, Madrid, Spain
| | - Luis Manuel Frutos
- Departamento de Química Analítica, Química Física e Ingeniería Química, Universidad de Alcalá , 28871 Alcalá de Henares, Madrid, Spain
| | - Obis Castaño
- Departamento de Química Analítica, Química Física e Ingeniería Química, Universidad de Alcalá , 28871 Alcalá de Henares, Madrid, Spain
| | - Diego Sampedro
- Departamento de Química, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja , Madre de Dios 53, 26006 Logroño, Spain
| | - Adrián Pérez-Redondo
- Departamento de Química Orgánica y Química Inorgánica, Universidad de Alcalá , 28871 Alcalá de Henares, Madrid, Spain
| | - Juan J Vaquero
- Departamento de Química Orgánica y Química Inorgánica, Universidad de Alcalá , 28871 Alcalá de Henares, Madrid, Spain
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14
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Valentini A, Rivero D, Zapata F, García-Iriepa C, Marazzi M, Palmeiro R, Fdez. Galván I, Sampedro D, Olivucci M, Frutos LM. Optomechanical Control of Quantum Yield in Trans
-Cis
Ultrafast Photoisomerization of a Retinal Chromophore Model. Angew Chem Int Ed Engl 2017; 56:3842-3846. [DOI: 10.1002/anie.201611265] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Revised: 01/12/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Alessio Valentini
- Department of Analytical Chemistry; Physical Chemistry and Chemical Engineering; University of Alcalá; Ctra. A2 Km 33,6 28871 Alcalá de Henares Spain
- Department of Biotechnology; Chemistry and Pharmacy; University of Siena; via A. Moro 2 53100 Siena Italy
| | - Daniel Rivero
- Department of Analytical Chemistry; Physical Chemistry and Chemical Engineering; University of Alcalá; Ctra. A2 Km 33,6 28871 Alcalá de Henares Spain
| | - Felipe Zapata
- Department of Analytical Chemistry; Physical Chemistry and Chemical Engineering; University of Alcalá; Ctra. A2 Km 33,6 28871 Alcalá de Henares Spain
| | - Cristina García-Iriepa
- Department of Analytical Chemistry; Physical Chemistry and Chemical Engineering; University of Alcalá; Ctra. A2 Km 33,6 28871 Alcalá de Henares Spain
- Departamento de Química; Centro de Investigación en Síntesis Química (CISQ); University of La Rioja; Madre de Dios, 53 26006 Logroño Spain
| | - Marco Marazzi
- Theory-Modeling-Simulation SRSMC; Université de Lorraine-Nancy; Vandoeuvre-lès-Nancy, Nancy France
- Theory-Modeling-Simulation SRSMC; CNRS; SRSMC Boulevard des Aiguillettes Vandoeuvre-lès-Nancy France
| | - Raúl Palmeiro
- Department of Analytical Chemistry; Physical Chemistry and Chemical Engineering; University of Alcalá; Ctra. A2 Km 33,6 28871 Alcalá de Henares Spain
| | - Ignacio Fdez. Galván
- Department of Chemistry-Ångström; Uppsala Center for Computational Chemistry-UC 3; Uppsala University; Box 518 75120 Uppsala Sweden
| | - Diego Sampedro
- Departamento de Química; Centro de Investigación en Síntesis Química (CISQ); University of La Rioja; Madre de Dios, 53 26006 Logroño Spain
| | - Massimo Olivucci
- Department of Biotechnology; Chemistry and Pharmacy; University of Siena; via A. Moro 2 53100 Siena Italy
- Department of Chemistry; Bowling Green State University; Bowling Green OH 43403 USA
- USIAS and Institut de Physique et Chimie des Matériaux de Strasbourg; Université de Strasbourg-CNRS; 67034 Strasbourg France
| | - Luis Manuel Frutos
- Department of Analytical Chemistry; Physical Chemistry and Chemical Engineering; University of Alcalá; Ctra. A2 Km 33,6 28871 Alcalá de Henares Spain
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15
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Valentini A, Rivero D, Zapata F, García-Iriepa C, Marazzi M, Palmeiro R, Fdez. Galván I, Sampedro D, Olivucci M, Frutos LM. Optomechanical Control of Quantum Yield in Trans
-Cis
Ultrafast Photoisomerization of a Retinal Chromophore Model. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611265] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Alessio Valentini
- Department of Analytical Chemistry; Physical Chemistry and Chemical Engineering; University of Alcalá; Ctra. A2 Km 33,6 28871 Alcalá de Henares Spain
- Department of Biotechnology; Chemistry and Pharmacy; University of Siena; via A. Moro 2 53100 Siena Italy
| | - Daniel Rivero
- Department of Analytical Chemistry; Physical Chemistry and Chemical Engineering; University of Alcalá; Ctra. A2 Km 33,6 28871 Alcalá de Henares Spain
| | - Felipe Zapata
- Department of Analytical Chemistry; Physical Chemistry and Chemical Engineering; University of Alcalá; Ctra. A2 Km 33,6 28871 Alcalá de Henares Spain
| | - Cristina García-Iriepa
- Department of Analytical Chemistry; Physical Chemistry and Chemical Engineering; University of Alcalá; Ctra. A2 Km 33,6 28871 Alcalá de Henares Spain
- Departamento de Química; Centro de Investigación en Síntesis Química (CISQ); University of La Rioja; Madre de Dios, 53 26006 Logroño Spain
| | - Marco Marazzi
- Theory-Modeling-Simulation SRSMC; Université de Lorraine-Nancy; Vandoeuvre-lès-Nancy, Nancy France
- Theory-Modeling-Simulation SRSMC; CNRS; SRSMC Boulevard des Aiguillettes Vandoeuvre-lès-Nancy France
| | - Raúl Palmeiro
- Department of Analytical Chemistry; Physical Chemistry and Chemical Engineering; University of Alcalá; Ctra. A2 Km 33,6 28871 Alcalá de Henares Spain
| | - Ignacio Fdez. Galván
- Department of Chemistry-Ångström; Uppsala Center for Computational Chemistry-UC 3; Uppsala University; Box 518 75120 Uppsala Sweden
| | - Diego Sampedro
- Departamento de Química; Centro de Investigación en Síntesis Química (CISQ); University of La Rioja; Madre de Dios, 53 26006 Logroño Spain
| | - Massimo Olivucci
- Department of Biotechnology; Chemistry and Pharmacy; University of Siena; via A. Moro 2 53100 Siena Italy
- Department of Chemistry; Bowling Green State University; Bowling Green OH 43403 USA
- USIAS and Institut de Physique et Chimie des Matériaux de Strasbourg; Université de Strasbourg-CNRS; 67034 Strasbourg France
| | - Luis Manuel Frutos
- Department of Analytical Chemistry; Physical Chemistry and Chemical Engineering; University of Alcalá; Ctra. A2 Km 33,6 28871 Alcalá de Henares Spain
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16
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Fernández-González MÁ, Rivero D, García-Iriepa C, Sampedro D, Frutos LM. Mechanochemical Tuning of Pyrene Absorption Spectrum Using Force Probes. J Chem Theory Comput 2017; 13:727-736. [DOI: 10.1021/acs.jctc.6b01020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
| | - Daniel Rivero
- Química
Física, Universidad de Alcalá, E-28871 Alcalá
de Henares, Madrid, Spain
| | - Cristina García-Iriepa
- Química
Física, Universidad de Alcalá, E-28871 Alcalá
de Henares, Madrid, Spain
- Departamento
de Química, Centro de Investigación en Síntesis Química (CISQ), Madre de Dios, 53, E-26006 Logroño, Spain
| | - Diego Sampedro
- Departamento
de Química, Centro de Investigación en Síntesis Química (CISQ), Madre de Dios, 53, E-26006 Logroño, Spain
| | - Luis Manuel Frutos
- Química
Física, Universidad de Alcalá, E-28871 Alcalá
de Henares, Madrid, Spain
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17
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García-Iriepa C, Ernst HA, Liang Y, Unterreiner AN, Frutos LM, Sampedro D. Study of Model Systems for Bilirubin and Bilin Chromophores: Determination and Modification of Thermal and Photochemical Properties. J Org Chem 2016; 81:6292-302. [PMID: 27391671 DOI: 10.1021/acs.joc.6b00892] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Bilin chromophores and bilirubin are involved in relevant biological functions such as light perception in plants and as protective agents against Alzheimer and other diseases. Despite their extensive use, a deep rationalization of the main factors controlling the thermal and photochemical properties has not been performed yet, which in turn hampers further applications of these versatile molecules. In an effort to understand those factors and allow control of the relevant properties, a combined experimental and computational study has been carried out for diverse model systems to understand the interconversion between Z and E isomers. In this study, we have demonstrated the crucial role of steric hindrance and hydrogen-bond interactions in thermal stability and the ability to control them by designing novel compounds. We also determined several photochemical properties and studied the photodynamics of two model systems in more detail, observing a fast relaxation of the excited state shorter than 2 ps in both cases. Finally, the computational study allowed us to rationalize the experimental evidence.
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Affiliation(s)
- Cristina García-Iriepa
- Unidad Docente de Química Física, Universidad de Alcalá , Alcalá de Henares, E-28871 Madrid, Spain
| | - Hanna A Ernst
- Institute of Physical Chemistry, Karlsruhe Institute of Technology (KIT) , 76128 Karlsruhe, Germany
| | - Yu Liang
- Institute of Physical Chemistry, Karlsruhe Institute of Technology (KIT) , 76128 Karlsruhe, Germany
| | - Andreas-Neil Unterreiner
- Institute of Physical Chemistry, Karlsruhe Institute of Technology (KIT) , 76128 Karlsruhe, Germany
| | - Luis Manuel Frutos
- Unidad Docente de Química Física, Universidad de Alcalá , Alcalá de Henares, E-28871 Madrid, Spain
| | - Diego Sampedro
- Departamento de Química, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja , Madre de Dios 53, E-26006 Logroño, Spain
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18
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Manathunga M, Yang X, Luk HL, Gozem S, Frutos LM, Valentini A, Ferrè N, Olivucci M. Probing the Photodynamics of Rhodopsins with Reduced Retinal Chromophores. J Chem Theory Comput 2016; 12:839-50. [PMID: 26640959 DOI: 10.1021/acs.jctc.5b00945] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
While the light-induced population dynamics of different photoresponsive proteins has been investigated spectroscopically, systematic computational studies have not yet been possible due to the phenomenally high cost of suitable high level quantum chemical methods and the need of propagating hundreds, if not thousands, of nonadiabatic trajectories. Here we explore the possibility of studying the photodynamics of rhodopsins by constructing and investigating quantum mechanics/molecular mechanics (QM/MM) models featuring reduced retinal chromophores. In order to do so we use the sensory rhodopsin found in the cyanobacterium Anabaena PCC7120 (ASR) as a benchmark system. We find that the basic mechanistic features associated with the excited state dynamics of ASR QM/MM models are reproduced using models incorporating a minimal (i.e., three double-bond) chromophore. Furthermore, we show that ensembles of nonadiabatic ASR trajectories computed using the same abridged models replicate, at both the CASPT2 and CASSCF levels of theory, the trends in spectroscopy and lifetimes estimated using unabridged models and observed experimentally at room temperature. We conclude that a further expansion of these studies may lead to low-cost QM/MM rhodopsin models that may be used as effective tools in high-throughput in silico mutant screening.
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Affiliation(s)
- Madushanka Manathunga
- Department of Chemistry, Bowling Green State University , Bowling Green, Ohio 43403, United States
| | - Xuchun Yang
- Department of Chemistry, Bowling Green State University , Bowling Green, Ohio 43403, United States
| | - Hoi Ling Luk
- Department of Chemistry, Bowling Green State University , Bowling Green, Ohio 43403, United States
| | - Samer Gozem
- Department of Chemistry, Bowling Green State University , Bowling Green, Ohio 43403, United States
| | - Luis Manuel Frutos
- Departamento de Química Física, Universidad de Alcalá , E-28871 Alcalá de Henares, Madrid, Spain
| | - Alessio Valentini
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università di Siena , via A. Moro 2, I-53100 Siena, Siena, Italy.,Departamento de Química Física, Universidad de Alcalá , E-28871 Alcalá de Henares, Madrid, Spain
| | - Nicolas Ferrè
- Aix-Marseille Université, CNRS, Institut de Chimie Radicalaire, 13397 Marseille, Cedex 20, France
| | - Massimo Olivucci
- Department of Chemistry, Bowling Green State University , Bowling Green, Ohio 43403, United States.,Dipartimento di Biotecnologie, Chimica e Farmacia, Università di Siena , via A. Moro 2, I-53100 Siena, Siena, Italy.,University of Strasbourg Institute for Advanced Studies, 5, allée du Général Rouvillois, F-67083 Strasbourg, France
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19
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García-Iriepa C, Gueye M, Léonard J, Martínez-López D, Campos PJ, Frutos LM, Sampedro D, Marazzi M. A biomimetic molecular switch at work: coupling photoisomerization dynamics to peptide structural rearrangement. Phys Chem Chem Phys 2016; 18:6742-53. [DOI: 10.1039/c5cp07599h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A combined experimental and computational study of a peptide-linked retinal-like molecular switch shows the effects on photoreactivity and the α-helix structure.
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Affiliation(s)
- Cristina García-Iriepa
- Departamento de Química
- Centro de Investigación en Síntesis Química (CISQ)
- Universidad de La Rioja
- E-26006 Logroño
- Spain
| | - Moussa Gueye
- Institut de Physique et Chimie des Matériaux de Strasbourg & Labex NIE
- Université de Strasbourg
- Strasbourg 67034
- France
| | - Jérémie Léonard
- Institut de Physique et Chimie des Matériaux de Strasbourg & Labex NIE
- Université de Strasbourg
- Strasbourg 67034
- France
| | - David Martínez-López
- Departamento de Química
- Centro de Investigación en Síntesis Química (CISQ)
- Universidad de La Rioja
- E-26006 Logroño
- Spain
| | - Pedro J. Campos
- Departamento de Química
- Centro de Investigación en Síntesis Química (CISQ)
- Universidad de La Rioja
- E-26006 Logroño
- Spain
| | | | - Diego Sampedro
- Departamento de Química
- Centro de Investigación en Síntesis Química (CISQ)
- Universidad de La Rioja
- E-26006 Logroño
- Spain
| | - Marco Marazzi
- Department of Theoretical Chemical Biology
- Institute of Physical Chemistry
- KIT
- 76131 Karlsruhe
- Germany
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20
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Aquilante F, Autschbach J, Carlson RK, Chibotaru LF, Delcey MG, De Vico L, Fdez Galván I, Ferré N, Frutos LM, Gagliardi L, Garavelli M, Giussani A, Hoyer CE, Li Manni G, Lischka H, Ma D, Malmqvist PÅ, Müller T, Nenov A, Olivucci M, Pedersen TB, Peng D, Plasser F, Pritchard B, Reiher M, Rivalta I, Schapiro I, Segarra-Martí J, Stenrup M, Truhlar DG, Ungur L, Valentini A, Vancoillie S, Veryazov V, Vysotskiy VP, Weingart O, Zapata F, Lindh R. Molcas 8: New capabilities for multiconfigurational quantum chemical calculations across the periodic table. J Comput Chem 2015; 37:506-41. [PMID: 26561362 DOI: 10.1002/jcc.24221] [Citation(s) in RCA: 1083] [Impact Index Per Article: 120.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 09/07/2015] [Accepted: 09/09/2015] [Indexed: 12/17/2022]
Abstract
In this report, we summarize and describe the recent unique updates and additions to the Molcas quantum chemistry program suite as contained in release version 8. These updates include natural and spin orbitals for studies of magnetic properties, local and linear scaling methods for the Douglas-Kroll-Hess transformation, the generalized active space concept in MCSCF methods, a combination of multiconfigurational wave functions with density functional theory in the MC-PDFT method, additional methods for computation of magnetic properties, methods for diabatization, analytical gradients of state average complete active space SCF in association with density fitting, methods for constrained fragment optimization, large-scale parallel multireference configuration interaction including analytic gradients via the interface to the Columbus package, and approximations of the CASPT2 method to be used for computations of large systems. In addition, the report includes the description of a computational machinery for nonlinear optical spectroscopy through an interface to the QM/MM package Cobramm. Further, a module to run molecular dynamics simulations is added, two surface hopping algorithms are included to enable nonadiabatic calculations, and the DQ method for diabatization is added. Finally, we report on the subject of improvements with respects to alternative file options and parallelization.
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Affiliation(s)
- Francesco Aquilante
- Department of Chemistry - Ångström, The Theoretical Chemistry Programme, Uppsala University, Box 518, Uppsala, 751 20, Sweden.,Dipartimento di Chimica "G. Ciamician", Università di Bologna, via Selmi 2, IT-40126, Bologna, Italy
| | - Jochen Autschbach
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, New York, 14260-3000, USA
| | - Rebecca K Carlson
- Department of Chemistry, Supercomputing Institute, and Chemical Theory Center, University of Minnesota, Minneapolis, Minnesota, 55455-0431, USA
| | - Liviu F Chibotaru
- Division of Quantum and Physical Chemistry, and INPAC, Institute for Nanoscale Physics and Chemistry, Katholieke Universiteit Leuven Celestijnenlaan, 200F, 3001, Belgium
| | - Mickaël G Delcey
- Department of Chemistry - Ångström, The Theoretical Chemistry Programme, Uppsala University, Box 518, Uppsala, 751 20, Sweden
| | - Luca De Vico
- Department of Chemistry, Copenhagen University, Universitetsparken 5, Copenhagen Ø, 2100, Denmark
| | - Ignacio Fdez Galván
- Department of Chemistry - Ångström, The Theoretical Chemistry Programme, Uppsala University, Box 518, Uppsala, 751 20, Sweden.,Uppsala Center for Computational Chemistry - UC3, Uppsala University, Box 518, Uppsala, 751 20, Sweden
| | - Nicolas Ferré
- Université d'Aix-Marseille, CNRS, Institut de Chimie Radicalaire, Campus Étoile/Saint-Jérôme Case 521, Avenue Esc. Normandie Niemen, Marseille Cedex 20, 13397, France
| | - Luis Manuel Frutos
- Unidad Docente de Química Física, Universidad de Alcalá, E-28871 Alcalá de Henares, Madrid, Spain
| | - Laura Gagliardi
- Department of Chemistry, Supercomputing Institute, and Chemical Theory Center, University of Minnesota, Minneapolis, Minnesota, 55455-0431, USA
| | - Marco Garavelli
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, via Selmi 2, IT-40126, Bologna, Italy.,Université de Lyon, CNRS, École Normale Supérieure de Lyon, 46 Allée d'Italie, Lyon Cedex 07, F-69364, France
| | - Angelo Giussani
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, via Selmi 2, IT-40126, Bologna, Italy
| | - Chad E Hoyer
- Department of Chemistry, Supercomputing Institute, and Chemical Theory Center, University of Minnesota, Minneapolis, Minnesota, 55455-0431, USA
| | - Giovanni Li Manni
- Department of Chemistry, Supercomputing Institute, and Chemical Theory Center, University of Minnesota, Minneapolis, Minnesota, 55455-0431, USA.,Max Planck Institut für Festkörperforschung, Heisenbergstraße 1, Stuttgart, 70569, Germany
| | - Hans Lischka
- Department of Chemistry and Biochemistry, Texas Tech University, Memorial Circle and Boston, Lubbock, Texas, 79409-1061, USA.,Institute for Theoretical Chemistry, University of Vienna, Währingerstraße 17, Vienna, A-1090, Austria
| | - Dongxia Ma
- Department of Chemistry, Supercomputing Institute, and Chemical Theory Center, University of Minnesota, Minneapolis, Minnesota, 55455-0431, USA.,Max Planck Institut für Festkörperforschung, Heisenbergstraße 1, Stuttgart, 70569, Germany
| | - Per Åke Malmqvist
- Department of Theoretical Chemistry, Lund University, Chemical Center, P.O.B 124 S-221 00, Lund, Sweden
| | - Thomas Müller
- Jülich Supercomputing Centre (JSC), Forschungszentrum Jülich GmbH, Institute for Advanced Simulation (IAS), Wilhelm-Johnen-Straße, Jülich, 52425, Germany
| | - Artur Nenov
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, via Selmi 2, IT-40126, Bologna, Italy
| | - Massimo Olivucci
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, via Aldo Moro 2, Siena, 53100, Italy.,Chemistry Department, Bowling Green State University, 141 Overman Hall, Bowling Green, Ohio, 43403, USA.,Institut de Physique et Chimie des Matériaux de Strasbourg & Labex NIE, Université de Strasbourg, CNRS UMR 7504, 23 Rue du Loess, Strasbourg, 67034, France
| | - Thomas Bondo Pedersen
- Centre for Theoretical and Computational Chemistry, Department of Chemistry, University of Oslo, P.O. Box 1033 Blindern, Oslo, 0315, Norway
| | - Daoling Peng
- College of Chemistry and Environment, South China Normal University, Guangzhou, 510006, China
| | - Felix Plasser
- Institute for Theoretical Chemistry, University of Vienna, Währingerstraße 17, Vienna, A-1090, Austria
| | - Ben Pritchard
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, New York, 14260-3000, USA
| | - Markus Reiher
- ETH Zurich, Laboratorium für Physikalische Chemie, Vladimir-Prelog-Weg 2, Zurich, CH-8093, Switzerland
| | - Ivan Rivalta
- Université de Lyon, CNRS, École Normale Supérieure de Lyon, 46 Allée d'Italie, Lyon Cedex 07, F-69364, France
| | - Igor Schapiro
- Institut de Physique et Chimie des Matériaux de Strasbourg & Labex NIE, Université de Strasbourg, CNRS UMR 7504, 23 Rue du Loess, Strasbourg, 67034, France.,Fritz Haber Center for Molecular Dynamics, Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel
| | - Javier Segarra-Martí
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, via Selmi 2, IT-40126, Bologna, Italy
| | - Michael Stenrup
- Department of Chemistry - Ångström, The Theoretical Chemistry Programme, Uppsala University, Box 518, Uppsala, 751 20, Sweden.,Uppsala Center for Computational Chemistry - UC3, Uppsala University, Box 518, Uppsala, 751 20, Sweden
| | - Donald G Truhlar
- Department of Chemistry, Supercomputing Institute, and Chemical Theory Center, University of Minnesota, Minneapolis, Minnesota, 55455-0431, USA
| | - Liviu Ungur
- Division of Quantum and Physical Chemistry, and INPAC, Institute for Nanoscale Physics and Chemistry, Katholieke Universiteit Leuven Celestijnenlaan, 200F, 3001, Belgium
| | - Alessio Valentini
- Unidad Docente de Química Física, Universidad de Alcalá, E-28871 Alcalá de Henares, Madrid, Spain.,Department of Biotechnology, Chemistry and Pharmacy, University of Siena, via Aldo Moro 2, Siena, 53100, Italy
| | - Steven Vancoillie
- Department of Theoretical Chemistry, Lund University, Chemical Center, P.O.B 124 S-221 00, Lund, Sweden
| | - Valera Veryazov
- Department of Theoretical Chemistry, Lund University, Chemical Center, P.O.B 124 S-221 00, Lund, Sweden
| | - Victor P Vysotskiy
- Department of Theoretical Chemistry, Lund University, Chemical Center, P.O.B 124 S-221 00, Lund, Sweden
| | - Oliver Weingart
- Institut für Theoretische Chemie und Computerchemie, Heinrich-Heine-Universität Düsseldorf, Universitätsstraße 1, Düsseldorf, 40225, Germany
| | - Felipe Zapata
- Unidad Docente de Química Física, Universidad de Alcalá, E-28871 Alcalá de Henares, Madrid, Spain
| | - Roland Lindh
- Department of Chemistry - Ångström, The Theoretical Chemistry Programme, Uppsala University, Box 518, Uppsala, 751 20, Sweden.,Uppsala Center for Computational Chemistry - UC3, Uppsala University, Box 518, Uppsala, 751 20, Sweden
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21
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Rivero D, Valentini A, Fernández-González MÁ, Zapata F, García-Iriepa C, Sampedro D, Palmeiro R, Frutos LM. Mechanical Forces Alter Conical Intersections Topology. J Chem Theory Comput 2015; 11:3740-5. [DOI: 10.1021/acs.jctc.5b00375] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Daniel Rivero
- Química
Física, Universidad de Alcalá, E- 28871 Alcalá de Henares, Madrid, Spain
| | - Alessio Valentini
- Química
Física, Universidad de Alcalá, E- 28871 Alcalá de Henares, Madrid, Spain
- Department
of Biotechnology, Chemistry and Pharmacy, University of Siena, Siena, Italy
| | | | - Felipe Zapata
- Química
Física, Universidad de Alcalá, E- 28871 Alcalá de Henares, Madrid, Spain
| | - Cristina García-Iriepa
- Química
Física, Universidad de Alcalá, E- 28871 Alcalá de Henares, Madrid, Spain
- Departamento
de Química, Centro de Investigación en Síntesis Química (CISQ), Madre de Dios, 51, E-26006, Logroño, Spain
| | - Diego Sampedro
- Departamento
de Química, Centro de Investigación en Síntesis Química (CISQ), Madre de Dios, 51, E-26006, Logroño, Spain
| | - Raúl Palmeiro
- Química
Física, Universidad de Alcalá, E- 28871 Alcalá de Henares, Madrid, Spain
| | - Luis Manuel Frutos
- Química
Física, Universidad de Alcalá, E- 28871 Alcalá de Henares, Madrid, Spain
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22
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Martínez-López D, Yu ML, García-Iriepa C, Campos PJ, Frutos LM, Golen JA, Rasapalli S, Sampedro D. Hydantoin-based molecular photoswitches. J Org Chem 2015; 80:3929-39. [PMID: 25806596 DOI: 10.1021/acs.joc.5b00244] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A new family of molecular photoswitches based on arylidenehydantoins is described together with their synthesis and photochemical and photophysical studies. A series of hydantoin derivatives have been prepared as single isomers using simple and versatile chemistry in good yields. Our studies show that the photostationary states of these compounds can be easily controlled by means of external factors, such as the light source or filters. Moreover, the detailed investigations proved that these switches are efficient (i.e., they make efficient use of the light energy, are high fatigue resistant, and are very photostable). In some cases, the switches can be completely turned on/off, a desirable feature for specific applications. A series of theoretical calculations have also been carried out to understand the photoisomerization mechanism at the molecular level.
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Affiliation(s)
- David Martínez-López
- †Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química (CISQ), Madre de Dios, 51, 26006 Logroño, Spain
| | - Meng-Long Yu
- ‡Department of Chemistry and Biochemistry, University of Massachusetts Dartmouth, North Darmouth 02747, United States
| | - Cristina García-Iriepa
- †Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química (CISQ), Madre de Dios, 51, 26006 Logroño, Spain.,§Departamento de Química Analítica, Química Física e Ingeniería Química, Universidad de Alcalá, Alcalá de Henares, 28871 Madrid, Spain
| | - Pedro J Campos
- †Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química (CISQ), Madre de Dios, 51, 26006 Logroño, Spain
| | - Luis Manuel Frutos
- §Departamento de Química Analítica, Química Física e Ingeniería Química, Universidad de Alcalá, Alcalá de Henares, 28871 Madrid, Spain
| | - James A Golen
- ‡Department of Chemistry and Biochemistry, University of Massachusetts Dartmouth, North Darmouth 02747, United States
| | - Sivappa Rasapalli
- ‡Department of Chemistry and Biochemistry, University of Massachusetts Dartmouth, North Darmouth 02747, United States
| | - Diego Sampedro
- †Departamento de Química, Universidad de La Rioja, Centro de Investigación en Síntesis Química (CISQ), Madre de Dios, 51, 26006 Logroño, Spain
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23
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Marchand G, Eng J, Schapiro I, Valentini A, Frutos LM, Pieri E, Olivucci M, Léonard J, Gindensperger E. Directionality of Double-Bond Photoisomerization Dynamics Induced by a Single Stereogenic Center. J Phys Chem Lett 2015; 6:599-604. [PMID: 26262473 DOI: 10.1021/jz502644h] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
In light-driven single-molecule rotary motors, the photoisomerization of a double bond converts light energy into the rotation of a moiety (the rotor) with respect to another (the stator). However, at the level of a molecular population, an effective rotary motion can only be achieved if a large majority of the rotors rotate in the same, specific direction. Here we present a quantitative investigation of the directionality (clockwise vs counterclockwise) induced by a single stereogenic center placed in allylic position with respect to the reactive double bond of a model of the biomimetic indanylidene-pyrrolinium framework. By computing ensembles of nonadiabatic trajectories at 300 K, we predict that the photoisomerization is >70% unidirectional for the Z → E and E → Z conversions. Most importantly, we show that such directionality, resulting from the asymmetry of the excited state force field, can still be observed in the presence of a small (ca. 2°) pretwist or helicity of the reactive double bond. This questions the validity of the conjecture that a significant double-bond pretwist (e.g., >10°) in the ground state equilibrium structure of synthetic or natural rotary motors would be required for unidirectional motion.
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Affiliation(s)
- Gabriel Marchand
- ‡Institut de Chimie, Université de Strasbourg, CNRS UMR 7177, 1 rue Blaise Pascal, Strasbourg 67008, France
| | - Julien Eng
- ‡Institut de Chimie, Université de Strasbourg, CNRS UMR 7177, 1 rue Blaise Pascal, Strasbourg 67008, France
| | | | - Alessio Valentini
- §Department of Biotechnology, Chemistry and Pharmacy, University of Siena, via Aldo Moro, 2, Siena 53100, Italy
- ⊥Unidad Docente de Química Física, Universidad de Alcalá, E-28871 Alcalá de Henares, Madrid, Spain
| | - Luis Manuel Frutos
- ⊥Unidad Docente de Química Física, Universidad de Alcalá, E-28871 Alcalá de Henares, Madrid, Spain
| | - Elisa Pieri
- §Department of Biotechnology, Chemistry and Pharmacy, University of Siena, via Aldo Moro, 2, Siena 53100, Italy
| | - Massimo Olivucci
- §Department of Biotechnology, Chemistry and Pharmacy, University of Siena, via Aldo Moro, 2, Siena 53100, Italy
- ∥Chemistry Department, Bowling Green State University, 141 Overman Hall, Bowling Green, Ohio 43403, United States
| | | | - Etienne Gindensperger
- ‡Institut de Chimie, Université de Strasbourg, CNRS UMR 7177, 1 rue Blaise Pascal, Strasbourg 67008, France
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24
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25
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Gozem S, Melaccio F, Valentini A, Filatov M, Huix-Rotllant M, Ferré N, Frutos LM, Angeli C, Krylov AI, Granovsky AA, Lindh R, Olivucci M. Shape of Multireference, Equation-of-Motion Coupled-Cluster, and Density Functional Theory Potential Energy Surfaces at a Conical Intersection. J Chem Theory Comput 2014; 10:3074-84. [PMID: 26588278 DOI: 10.1021/ct500154k] [Citation(s) in RCA: 143] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
We report and characterize ground-state and excited-state potential energy profiles using a variety of electronic structure methods along a loop lying on the branching plane associated with a conical intersection (CI) of a reduced retinal model, the penta-2,4-dieniminium cation (PSB3). Whereas the performance of the equation-of-motion coupled-cluster, density functional theory, and multireference methods had been tested along the excited- and ground-state paths of PSB3 in our earlier work, the ability of these methods to correctly describe the potential energy surface shape along a CI branching plane has not yet been investigated. This is the focus of the present contribution. We find, in agreement with earlier studies by others, that standard time-dependent DFT (TDDFT) does not yield the correct two-dimensional (i.e., conical) crossing along the branching plane but rather a one-dimensional (i.e., linear) crossing along the same plane. The same type of behavior is found for SS-CASPT2(IPEA=0), SS-CASPT2(IPEA=0.25), spin-projected SF-TDDFT, EOM-SF-CCSD, and, finally, for the reference MRCISD+Q method. In contrast, we found that MRCISD, CASSCF, MS-CASPT2(IPEA=0), MS-CASPT2(IPEA=0.25), XMCQDPT2, QD-NEVPT2, non-spin-projected SF-TDDFT, and SI-SA-REKS yield the expected conical crossing. To assess the effect of the different crossing topologies (i.e., linear or conical) on the PSB3 photoisomerization efficiency, we discuss the results of 100 semiclassical trajectories computed by CASSCF and SS-CASPT2(IPEA=0.25) for a PSB3 derivative. We show that for the same initial conditions, the two methods yield similar dynamics leading to isomerization quantum yields that differ by only a few percent.
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Affiliation(s)
- Samer Gozem
- Department of Chemistry, Bowling Green State University , Bowling Green, Ohio 43403, United States
| | - Federico Melaccio
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università di Siena , via A. Moro 2, I-53100 Siena, Italy
| | - Alessio Valentini
- Dipartimento di Biotecnologie, Chimica e Farmacia, Università di Siena , via A. Moro 2, I-53100 Siena, Italy.,Departamento de Química Física, Universidad de Alcalá , E-28871 Alcalá de Henares, Madrid, Spain
| | - Michael Filatov
- Institut für Physikalische und Theoretische Chemie, Universität Bonn , Beringstrasse 4, 53115 Bonn, Germany
| | - Miquel Huix-Rotllant
- Aix-Marseille Université, CNRS, Institut de Chimie Radicalaire , Marseille, France
| | - Nicolas Ferré
- Aix-Marseille Université, CNRS, Institut de Chimie Radicalaire , Marseille, France
| | - Luis Manuel Frutos
- Departamento de Química Física, Universidad de Alcalá , E-28871 Alcalá de Henares, Madrid, Spain
| | - Celestino Angeli
- Dipartimento di Scienze Chimiche e Farmaceutiche, Università di Ferrara , via Fossato di Mortara 17, I-44121 Ferrara, Italy
| | - Anna I Krylov
- Department of Chemistry, University of Southern California , Los Angeles, California 90089-0482, United States
| | | | - Roland Lindh
- Department of Chemistry - Ångström, the Theoretical Chemistry Programme, POB 518, SE-751 20 Uppsala, Sweden
| | - Massimo Olivucci
- Department of Chemistry, Bowling Green State University , Bowling Green, Ohio 43403, United States.,Dipartimento di Biotecnologie, Chimica e Farmacia, Università di Siena , via A. Moro 2, I-53100 Siena, Italy
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26
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Zapata F, Marazzi M, Castaño O, Acuña AU, Frutos LM. Definition and determination of the triplet-triplet energy transfer reaction coordinate. J Chem Phys 2014; 140:034102. [DOI: 10.1063/1.4861560] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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27
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Zapata F, Fernández-González MÁ, Rivero D, Álvarez Á, Marazzi M, Frutos LM. Toward an Optomechanical Control of Photoswitches by Tuning Their Spectroscopical Properties: Structural and Dynamical Insights into Azobenzene. J Chem Theory Comput 2014; 10:312-23. [DOI: 10.1021/ct4007629] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Felipe Zapata
- Departamento de Química
Analítica, Química Física e Ingeniería
Química, Universidad de Alcalá, E-28871 Alcalá de Henares, Madrid, Spain
| | - Miguel Ángel Fernández-González
- Departamento de Química
Analítica, Química Física e Ingeniería
Química, Universidad de Alcalá, E-28871 Alcalá de Henares, Madrid, Spain
| | - Daniel Rivero
- Departamento de Química
Analítica, Química Física e Ingeniería
Química, Universidad de Alcalá, E-28871 Alcalá de Henares, Madrid, Spain
| | - Ángel Álvarez
- Departamento de Química
Analítica, Química Física e Ingeniería
Química, Universidad de Alcalá, E-28871 Alcalá de Henares, Madrid, Spain
| | - Marco Marazzi
- Departamento de Química
Analítica, Química Física e Ingeniería
Química, Universidad de Alcalá, E-28871 Alcalá de Henares, Madrid, Spain
| | - Luis Manuel Frutos
- Departamento de Química
Analítica, Química Física e Ingeniería
Química, Universidad de Alcalá, E-28871 Alcalá de Henares, Madrid, Spain
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28
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García-Iriepa C, Marazzi M, Zapata F, Valentini A, Sampedro D, Frutos LM. Chiral Hydrogen Bond Environment Providing Unidirectional Rotation in Photoactive Molecular Motors. J Phys Chem Lett 2013; 4:1389-96. [PMID: 26282290 DOI: 10.1021/jz302152v] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Generation of a chiral hydrogen bond environment in efficient molecular photoswitches is proposed as a novel strategy for the design of photoactive molecular motors. Here, the following strategy is used to design a retinal-based motor presenting singular properties: (i) a single excitation wavelength is needed to complete the unidirectional rotation process (360°); (ii) the absence of any thermal step permits the process to take place at low temperatures; and (iii) the ultrafast process permits high rotational frequencies.
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Affiliation(s)
- Cristina García-Iriepa
- †Departamento de Quı́mica Fı́sica, Universidad de Alcalá, E-28871 Alcalá de Henares, Madrid, Spain
- ‡Departamento de Quı́mica, Centro de Investigación en Sı́ntesis Química (CISQ), Madre de Dios 51, E-26006 Logroño, Spain
| | - Marco Marazzi
- †Departamento de Quı́mica Fı́sica, Universidad de Alcalá, E-28871 Alcalá de Henares, Madrid, Spain
| | - Felipe Zapata
- †Departamento de Quı́mica Fı́sica, Universidad de Alcalá, E-28871 Alcalá de Henares, Madrid, Spain
| | - Alessio Valentini
- †Departamento de Quı́mica Fı́sica, Universidad de Alcalá, E-28871 Alcalá de Henares, Madrid, Spain
| | - Diego Sampedro
- ‡Departamento de Quı́mica, Centro de Investigación en Sı́ntesis Química (CISQ), Madre de Dios 51, E-26006 Logroño, Spain
| | - Luis Manuel Frutos
- †Departamento de Quı́mica Fı́sica, Universidad de Alcalá, E-28871 Alcalá de Henares, Madrid, Spain
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29
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30
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Fernández-González MÁ, Marazzi M, López-Delgado A, Zapata F, García-Iriepa C, Rivero D, Castaño O, Temprado M, Frutos LM. Structural Substituent Effect in the Excitation Energy of a Chromophore: Quantitative Determination and Application to S-Nitrosothiols. J Chem Theory Comput 2012; 8:3293-302. [DOI: 10.1021/ct300597u] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
| | - Marco Marazzi
- Departamento
de Química Física, Universidad
de Alcalá, E-28871 Alcalá de Henares (Madrid), Spain
| | - Alberto López-Delgado
- Departamento
de Química Física, Universidad
de Alcalá, E-28871 Alcalá de Henares (Madrid), Spain
| | - Felipe Zapata
- Departamento
de Química Física, Universidad
de Alcalá, E-28871 Alcalá de Henares (Madrid), Spain
| | - Cristina García-Iriepa
- Departamento
de Química Física, Universidad
de Alcalá, E-28871 Alcalá de Henares (Madrid), Spain
| | - Daniel Rivero
- Departamento
de Química Física, Universidad
de Alcalá, E-28871 Alcalá de Henares (Madrid), Spain
| | - Obis Castaño
- Departamento
de Química Física, Universidad
de Alcalá, E-28871 Alcalá de Henares (Madrid), Spain
| | - Manuel Temprado
- Departamento
de Química Física, Universidad
de Alcalá, E-28871 Alcalá de Henares (Madrid), Spain
| | - Luis Manuel Frutos
- Departamento
de Química Física, Universidad
de Alcalá, E-28871 Alcalá de Henares (Madrid), Spain
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31
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Marazzi M, López-Delgado A, Fernández-González MA, Castaño O, Frutos LM, Temprado M. Modulating Nitric Oxide Release by S-Nitrosothiol Photocleavage: Mechanism and Substituent Effects. J Phys Chem A 2012; 116:7039-49. [DOI: 10.1021/jp304707n] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Marco Marazzi
- Departamento de Química Física, Universidad de Alcalá, E-28871 Alcalá
de Henares, Madrid, Spain
| | - Alberto López-Delgado
- Departamento de Química Física, Universidad de Alcalá, E-28871 Alcalá
de Henares, Madrid, Spain
| | | | - Obis Castaño
- Departamento de Química Física, Universidad de Alcalá, E-28871 Alcalá
de Henares, Madrid, Spain
| | - Luis Manuel Frutos
- Departamento de Química Física, Universidad de Alcalá, E-28871 Alcalá
de Henares, Madrid, Spain
| | - Manuel Temprado
- Departamento de Química Física, Universidad de Alcalá, E-28871 Alcalá
de Henares, Madrid, Spain
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32
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Marazzi M, Navizet I, Lindh R, Frutos LM. Photostability Mechanisms in Human γB-Crystallin: Role of the Tyrosine Corner Unveiled by Quantum Mechanics and Hybrid Quantum Mechanics/Molecular Mechanics Methodologies. J Chem Theory Comput 2012; 8:1351-9. [DOI: 10.1021/ct300114w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Marco Marazzi
- Departamento de Química
Física, Universidad de Alcalá, E-28871 Alcalá de Henares (Madrid), Spain
| | - Isabelle Navizet
- School of Chemistry, University of the Witwatersrand, ZA-2050 Johannesburg,
South Africa
| | - Roland Lindh
- Department of Chemistry, Ångström, The Theoretical Chemistry Programme, Uppsala University, SE-75120 Uppsala, Sweden
| | - Luis Manuel Frutos
- Departamento de Química
Física, Universidad de Alcalá, E-28871 Alcalá de Henares (Madrid), Spain
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33
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Marazzi M, Blanco-Lomas M, Rodríguez MA, Campos PJ, Castaño O, Sampedro D, Frutos LM. On the mechanism of the photocyclization of azadienes. Tetrahedron 2012. [DOI: 10.1016/j.tet.2011.10.101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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34
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Cai X, Majumdar S, Fortman GC, Frutos LM, Temprado M, Clough CR, Cummins CC, Germain ME, Palluccio T, Rybak-Akimova EV, Captain B, Hoff CD. Thermodynamic, Kinetic, and Mechanistic Study of Oxygen Atom Transfer from Mesityl Nitrile Oxide to Phosphines and to a Terminal Metal Phosphido Complex. Inorg Chem 2011; 50:9620-30. [DOI: 10.1021/ic2013599] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiaochen Cai
- Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables Florida 33021, United States
| | - Subhojit Majumdar
- Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables Florida 33021, United States
| | - George C. Fortman
- Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables Florida 33021, United States
| | - Luis Manuel Frutos
- Department of Physical Chemistry, Universidad de Alcalá, Ctra. Madrid-Barcelona Km. 33,600, Madrid, 28871, Spain
| | - Manuel Temprado
- Department of Physical Chemistry, Universidad de Alcalá, Ctra. Madrid-Barcelona Km. 33,600, Madrid, 28871, Spain
| | - Christopher R. Clough
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Christopher C. Cummins
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Meaghan E. Germain
- Department of Chemistry, Tufts University, 62 Talbot Avenue, Medford, Massachusetts 02155, United States
| | - Taryn Palluccio
- Department of Chemistry, Tufts University, 62 Talbot Avenue, Medford, Massachusetts 02155, United States
| | - Elena V. Rybak-Akimova
- Department of Chemistry, Tufts University, 62 Talbot Avenue, Medford, Massachusetts 02155, United States
| | - Burjor Captain
- Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables Florida 33021, United States
| | - Carl D. Hoff
- Department of Chemistry, University of Miami, 1301 Memorial Drive, Coral Gables Florida 33021, United States
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Abstract
The photochemistry and photophysics of a two-glycine minimal model is studied at the CASPT2//CASSCF level of theory. Different photoinduced processes are discussed, on the basis of the calculated minimum energy paths and the characterization of the electronic state crossings. Two main processes could provide UV-photostability to the hydrogen-bonded peptide system: (i) forward-backward photoinduced electron/proton transfer involving the H in the hydrogen bond, (ii) singlet-singlet energy transfer between two amino acids, providing ultrafast population of the low-energy n,π* state.
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Affiliation(s)
- Marco Marazzi
- Departamento de Química Física, Universidad de Alcalá, 28871 Alcalá de Henares (Madrid), Spain.
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36
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Schapiro I, Ryazantsev MN, Frutos LM, Ferré N, Lindh R, Olivucci M. The Ultrafast Photoisomerizations of Rhodopsin and Bathorhodopsin Are Modulated by Bond Length Alternation and HOOP Driven Electronic Effects. J Am Chem Soc 2011; 133:3354-64. [DOI: 10.1021/ja1056196] [Citation(s) in RCA: 143] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Igor Schapiro
- Chemistry Department, Bowling Green State University, Bowling Green, Ohio 43403, United States
| | | | - Luis Manuel Frutos
- Departamento de Química Física, Universidad de Alcalá, 28871 Alcalá de Henares, Madrid, Spain
| | - Nicolas Ferré
- Laboratoire Chimie Provence UMR 6264, Université de Provence, Campus Saint Jérôme Case 521, 13397 Marseille Cedex 20, France
| | - Roland Lindh
- Department of Quantum Chemistry, Ångströmlab, Lägerhyddsv. 1, Box 518, 751 20 Uppsala University, Sweden
| | - Massimo Olivucci
- Chemistry Department, Bowling Green State University, Bowling Green, Ohio 43403, United States
- Dipartimento di Chimica, Università degli Studi di Siena, via Aldo Moro 2, I-53100 Siena, Italy
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Melloni A, Rossi Paccani R, Donati D, Zanirato V, Sinicropi A, Parisi ML, Martin E, Ryazantsev M, Ding WJ, Frutos LM, Basosi R, Fusi S, Latterini L, Ferré N, Olivucci M. Modeling, preparation, and characterization of a dipole moment switch driven by Z/E photoisomerization. J Am Chem Soc 2010; 132:9310-9. [PMID: 20568762 DOI: 10.1021/ja906733q] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report the results of a multidisciplinary research effort where the methods of computational photochemistry and retrosynthetic analysis/synthesis have contributed to the preparation of a novel N-alkylated indanylidene-pyrroline Schiff base featuring an exocyclic double bond and a permanent zwitterionic head. We show that, due to its large dipole moment and efficient photoisomerization, such a system may constitute the prototype of a novel generation of electrostatic switches achieving a reversible light-induced dipole moment change on the order of 30 D. The modeling of a peptide fragment incorporating the zwitterionic head into a conformationally rigid side chain shows that the switch can effectively modulate the fluorescence of a tryptophan probe.
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Affiliation(s)
- Alfonso Melloni
- Dipartimento di Chimica, Università degli Studi di Siena, via Aldo Moro 2, I-53100 Siena, Italy
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38
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Strambi A, Coto PB, Frutos LM, Ferré N, Olivucci M. Relationship between the Excited State Relaxation Paths of Rhodopsin and Isorhodopsin. J Am Chem Soc 2008; 130:3382-8. [DOI: 10.1021/ja0749082] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Angela Strambi
- Dipartimento di Chimica, Università di Siena, via Aldo Moro I-53100 Siena, Italy, Instituto de Ciencia Molecular (ICMOL) Universidad de Valencia, Institutos de Paterna, 22085, ES-46071, Valencia, Spain, Laboratoire de Chimie Théorique et de Modélisation Moléculaire, UMR 6517- CNRS Université de Provence, Case 521 − Faculté de Saint-Jérôme, Av. Esc. Normandie Niemen, 13397 Marseille Cedex 20, France, and Chemistry Department, Bowling Green State University, Bowling Green, Ohio 43403
| | - Pedro B. Coto
- Dipartimento di Chimica, Università di Siena, via Aldo Moro I-53100 Siena, Italy, Instituto de Ciencia Molecular (ICMOL) Universidad de Valencia, Institutos de Paterna, 22085, ES-46071, Valencia, Spain, Laboratoire de Chimie Théorique et de Modélisation Moléculaire, UMR 6517- CNRS Université de Provence, Case 521 − Faculté de Saint-Jérôme, Av. Esc. Normandie Niemen, 13397 Marseille Cedex 20, France, and Chemistry Department, Bowling Green State University, Bowling Green, Ohio 43403
| | - Luis Manuel Frutos
- Dipartimento di Chimica, Università di Siena, via Aldo Moro I-53100 Siena, Italy, Instituto de Ciencia Molecular (ICMOL) Universidad de Valencia, Institutos de Paterna, 22085, ES-46071, Valencia, Spain, Laboratoire de Chimie Théorique et de Modélisation Moléculaire, UMR 6517- CNRS Université de Provence, Case 521 − Faculté de Saint-Jérôme, Av. Esc. Normandie Niemen, 13397 Marseille Cedex 20, France, and Chemistry Department, Bowling Green State University, Bowling Green, Ohio 43403
| | - Nicolas Ferré
- Dipartimento di Chimica, Università di Siena, via Aldo Moro I-53100 Siena, Italy, Instituto de Ciencia Molecular (ICMOL) Universidad de Valencia, Institutos de Paterna, 22085, ES-46071, Valencia, Spain, Laboratoire de Chimie Théorique et de Modélisation Moléculaire, UMR 6517- CNRS Université de Provence, Case 521 − Faculté de Saint-Jérôme, Av. Esc. Normandie Niemen, 13397 Marseille Cedex 20, France, and Chemistry Department, Bowling Green State University, Bowling Green, Ohio 43403
| | - Massimo Olivucci
- Dipartimento di Chimica, Università di Siena, via Aldo Moro I-53100 Siena, Italy, Instituto de Ciencia Molecular (ICMOL) Universidad de Valencia, Institutos de Paterna, 22085, ES-46071, Valencia, Spain, Laboratoire de Chimie Théorique et de Modélisation Moléculaire, UMR 6517- CNRS Université de Provence, Case 521 − Faculté de Saint-Jérôme, Av. Esc. Normandie Niemen, 13397 Marseille Cedex 20, France, and Chemistry Department, Bowling Green State University, Bowling Green, Ohio 43403
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Petrisor CE, Frutos LM, Castaño O, Mosquera MEG, Royo E, Cuenca T. Olefin isomerisation versus hydrozirconation: a case of a stable β-hydrogen-containing Zr-alkyl derivative. Dalton Trans 2008:2670-3. [DOI: 10.1039/b803419m] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Frutos LM, Markmann A, Sobolewski AL, Domcke W. Photoinduced electron and proton transfer in the hydrogen-bonded pyridine-pyrrole system. J Phys Chem B 2007; 111:6110-2. [PMID: 17503807 DOI: 10.1021/jp0729361] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We present here a detailed analysis of the mechanism of photoinduced electron and proton transfer in the planar pyrrole-pyridine hydrogen-bonded system, a model for the photochemistry of hydrogen bonds in DNA base pairs. Two different crossings, an avoided crossing and a conical intersection, are the key steps for forward and backward electron and proton transfer providing to the system photostability against UV radiation by restoring the system in its initial electronic and geometric structure.
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41
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Frutos LM, Andruniów T, Santoro F, Ferré N, Olivucci M. Tracking the excited-state time evolution of the visual pigment with multiconfigurational quantum chemistry. Proc Natl Acad Sci U S A 2007; 104:7764-9. [PMID: 17470789 PMCID: PMC1876521 DOI: 10.1073/pnas.0701732104] [Citation(s) in RCA: 221] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2007] [Indexed: 11/18/2022] Open
Abstract
The primary event that initiates vision is the photoinduced isomerization of retinal in the visual pigment rhodopsin (Rh). Here, we use a scaled quantum mechanics/molecular mechanics potential that reproduces the isomerization path determined with multiconfigurational perturbation theory to follow the excited-state evolution of bovine Rh. The analysis of a 140-fs trajectory provides a description of the electronic and geometrical changes that prepare the system for decay to the ground state. The data uncover a complex change of the retinal backbone that, at approximately 60-fs delay, initiates a space saving "asynchronous bicycle-pedal or crankshaft" motion, leading to a conical intersection on a 110-fs time scale. It is shown that the twisted structure achieved at decay features a momentum that provides a natural route toward the photoRh structure recently resolved by using femtosecond-stimulated Raman spectroscopy.
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Affiliation(s)
- Luis Manuel Frutos
- Dipartimento di Chimica, Università di Siena, via Aldo Moro 2, I-53100 Siena, Italy
| | - Tadeusz Andruniów
- Institute of Physical and Theoretical Chemistry, Department of Chemistry, Wroclaw University of Technology, 27 Wyb. Wyspianskiego, 50-370, Wroclaw, Poland
| | - Fabrizio Santoro
- Istituto per i Processi Chimico-Fisici, Consiglio Nazionale delle Ricerche, Via Moruzzi 1, I-56124 Pisa, Italy; and
| | - Nicolas Ferré
- Laboratoire de Chimie Théorique et de Modélisation Moléculaire, Unité Mixte de Recherche 6517, Centre National de la Recherche Scientifique, Université de Provence, Case 521, Faculté de Saint-Jérôme, Avenue Esc. Normandie Niemen, 13397 Marseille Cedex 20, France
| | - Massimo Olivucci
- Dipartimento di Chimica, Università di Siena, via Aldo Moro 2, I-53100 Siena, Italy
- Department of Chemistry, Bowling Green State University, Bowling Green, OH 43403
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Frutos LM, Sancho U, Garavelli M, Olivucci M, Castaño O. The role of the intersection space in the photochemistry of tricyclo[3.3.0.0(2,6)]octa-3,7-diene. J Phys Chem A 2007; 111:2830-8. [PMID: 17388575 DOI: 10.1021/jp067590t] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
CASSCF and CASPT2 methods were used to study the photochemistry of tricyclo[3.3.0.0(2,6)]octa-3,7-diene (TOD). The analysis of different S1 reaction paths as well as the topology of the S1/S0 intersection space allows us to establish two novel properties associated with the photochemical behavior of this compound: (i) simple low-lying intersection space domains can mediate different photoproducts, and (ii) TOD photochemistry is probably mediated by two disconnected intersection space domains, related to the formation of cyclooctatetraene and semibulvalene in different time-scales. It is shown that these domains are chemically distinct since the first, leading to COT, mediates barrierless pericyclic reactions while the second, leading to SBV, is accessed through the formation of an excited-state biradical intermediate. To the best of our knowledge, in the domain of single molecule photochemistry, TOD represents the first example where a different chemical role of distinct low-lying intersection spaces has been computationally documented. The observed photoproducts can be rationalized in terms of branching space diagrams, constructed by determining the branching space (derivative coupling and gradient difference vectors) for each conical intersection involved in the photochemical process.
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Affiliation(s)
- Luis Manuel Frutos
- Departamento de Química Física, Universidad de AlcalA, 28871 AlcalA de Henares, Madrid, Spain.
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43
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González‐Maupoey M, Cuenca T, Frutos LM, Castaño O, Herdtweck E, Rieger B. Alkylmono(cyclopentadienyl)titanium Complexes Containing the 2,2′‐Methylenebis(6‐
tert
‐butyl‐4‐methylphenoxido) Ligand – Studies on the Nature of the Catalytic Species Present in α‐Olefin Polymerisation Processes. Eur J Inorg Chem 2006. [DOI: 10.1002/ejic.200600710] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Marta González‐Maupoey
- Departamento de Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Spain, Fax: +34‐91‐885‐4683
| | - Tomás Cuenca
- Departamento de Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Spain, Fax: +34‐91‐885‐4683
| | - Luis Manuel Frutos
- Departamento de Química Física, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Spain
| | - Obis Castaño
- Departamento de Química Física, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Spain
| | - Eberhardt Herdtweck
- Anorganisch‐chemisches Institut, Technische Universität München, Lichtenberstrasse 4, 85747 Garching bei München, Germany
| | - Bernhard Rieger
- Abteilung Anorganische Chemie II, Universität Ulm, Albert‐Einstein‐Allee 11, 89069 Ulm, Germany
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44
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Frutos LM, Castano O, Andres JL, Merchan M, Acuna AU. A theory of nonvertical triplet energy transfer in terms of accurate potential energy surfaces: the transfer reaction from pi,pi* triplet donors to 1,3,5,7-cyclooctatetraene. J Chem Phys 2006; 120:1208-16. [PMID: 15268245 DOI: 10.1063/1.1631418] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Triplet energy transfer (TET) from aromatic donors to 1,3,5,7-cyclooctatetraene (COT) is an extreme case of "nonvertical" behavior, where the transfer rate for low-energy donors is considerably faster than that predicted for a thermally activated (Arrhenius) process. To explain the anomalous TET of COT and other molecules, a new theoretical model based on transition state theory for nonadiabatic processes is proposed here, which makes use of the adiabatic potential energy surfaces (PES) of reactants and products, as computed from high-level quantum mechanical methods, and a nonadiabatic transfer rate constant. It is shown that the rate of transfer depends on a geometrical distortion parameter gamma=(2g(2)/kappa(1))(1/2) in which g stands for the norm of the energy gradient in the PES of the acceptor triplet state and kappa(1) is a combination of vibrational force constants of the ground-state acceptor in the gradient direction. The application of the model to existing experimental data for the triplet energy transfer reaction to COT from a series of pi,pi(*) triplet donors, provides a detailed interpretation of the parameters that determine the transfer rate constant. In addition, the model shows that the observed decrease of the acceptor electronic excitation energy is due to thermal activation of C=C bond stretchings and C-C bond torsions, which collectively change the ground-state COT bent conformation (D(2d)) toward a planar triplet state (D(8h)).
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Affiliation(s)
- Luis Manuel Frutos
- Departamento de Quimica Fisica, Universidad de Alcala, 28871 Alcala de Henares, Madrid, Spain.
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45
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Bakalova SM, Frutos LM, Kaneti J, Castaño O. Correlated MO Study of the Low-Barrier Intramolecular Motions in Donor−Acceptor Ethenes. J Phys Chem A 2005; 109:10388-95. [PMID: 16833335 DOI: 10.1021/jp051864f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Correlated MP2 and MCSCF MO calculations of several model push-pull ethenes in most cases indicate no great participation of excited singlet and triplet electronic configurations in either the minima or the transition structures for the suggested facilitated intramolecular rotation about the polarized C=C bond. This situation changes significantly only in molecules with sulfur atoms in the molecule as either donors or acceptors. The outstanding contribution of sulfur atoms as either donors or acceptors is a significant increase of push-pull ethene molecular polarizabilities. Thus, within the studied small series of mostly planar push-pull ethenes, polarizability appears a better indicator of rapid intramolecular motions about the C=C bond than straight polarity. Substituents with larger steric demands around the C=C bond are shown to likely preclude its complete turnaround, thus prompting a ramification of the interpretations of dynamic NMR phenomena in sterically constrained push-pull ethenes as large-amplitude librations resulting from strong rovibrational and relatively weak electronic coupling. These librations, as shown by complete vibrational mode analysis of corresponding rotational transition structures, cover in fact certain sectors of the intuitively suggested full rotations similar to those about C-C single bonds.
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Affiliation(s)
- Snezhana M Bakalova
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
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46
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Frutos LM, Castaño O. A new algorithm for predicting triplet-triplet energy-transfer activated complex coordinate in terms of accurate potential-energy surfaces. J Chem Phys 2005; 123:104108. [PMID: 16178590 DOI: 10.1063/1.1993592] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The new algorithm presented here allows, for the first time, the determination of the optimal geometrical distortions that an acceptor molecule in the triplet-triplet energy-transfer process undergoes, as well as the dependence of the activation energy of the process on the triplet energy difference of donor and acceptor molecules. This algorithm makes use of the complete potential-energy surfaces (singlet and triplet states), and contrasts with the first-order approximation already published [L. M. Frutos, O. Castano, J. L. Andres, M. Merchan, and A. U. Acuna, J. Chem. Phys. 120, 1208 (2004)] in which an expansion of the potential-energy surfaces was used. This algorithm is gradient based and finds the best trajectory for the acceptor molecule, starting from S(0) ground-state equilibrium geometry, to achieve the maximum variation of the singlet-triplet energy gap with the minimum energy of activation on S(0). Therefore, the algorithm allows the determination of a "reaction path" for the triplet-triplet energy-transfer processes. Also, the algorithm could also serve eventually to find minimum-energy crossing (singlet-triplet) points on the potential-energy surface, which can play an important role in the intersystem crossing process for the acceptor molecules to recover their initial capacity as acceptors. Also addressed is the misleading use of minimum-energy paths in T(1) to describe the energy-transfer process by comparing these results with those obtained using the new algorithm. The implementation of the algorithm is illustrated with different potential-energy surface models and it is discussed in the frame of nonvertical behavior.
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47
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González-Maupoey M, Cuenca T, Frutos LM, Castaño O, Herdtweck E. Monocyclopentadienyl and ansa-Monocyclopentadienylalkoxo Complexes of Titanium Containing the 2,2‘-Methylenebis(6-tert-butyl-4-methylphenoxo) Ligand. Synthesis, Characterization, and Polymerization Catalyst Behavior. Molecular Structure of Ti(η5-C5H5)(η2-MBMP)Cl, Ti(η5-C5Me5)(η2-MBMP)Cl, and Ti(η5-C5H4SiMe2-η1-MBMP)Cl2. Organometallics 2003. [DOI: 10.1021/om030010j] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | | | - Eberhardt Herdtweck
- Anorganisch-chemisches Institut, Technische Universität München, Lichtenbergstrasse 4, D-85747 Garching bei München, Germany
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Garavelli M, Bernardi F, Cembran A, Castaño O, Frutos LM, Merchán M, Olivucci M. Cyclooctatetraene computational photo- and thermal chemistry: a reactivity model for conjugated hydrocarbons. J Am Chem Soc 2002; 124:13770-89. [PMID: 12431107 DOI: 10.1021/ja020741v] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We use ab initio CASSCF and CASPT2 computations to construct the composite multistate relaxation path relevant to cycloocta-1,3,5,7-tetraene singlet photochemistry. The results show that an efficient population of the dark excited state (S(1)) takes place after ultrafast decay from the spectroscopic excited state (S(2)). A planar D(8)(h)-symmetric minimum represents the collecting point on S(1). Nonadiabatic transitions to S(0) appear to be controlled by two different tetraradical-type conical intersections, which are directly accessible from the S(1) minimum following specific excited-state reaction paths. The higher-energy conical intersection belongs to the same type of intersections previously documented in linear and cyclic conjugated hydrocarbons and features a triangular -(CH)(3)- kink. This point mediates both cis --> trans photoisomerization and cyclopropanation reactions. The lowest energy conical intersection has a boat-shaped structure. This intersection accounts for production of semibullvalene or for double-bond shifting. The mapping of both photochemical and thermal reaction paths (including also Cope rearrangements, valence isomerizations, ring inversions, and double-bond shifting) has allowed us to draw a comprehensive reactivity scheme for cyclooctatetraene, which rationalizes the experimental observations and documents the complex network of photochemical and thermal reaction path interconnections. The factors controlling the selection and accessibility of a number of conjugated hydrocarbon prototype conical intersections and ground-state relaxation channels are discussed.
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Affiliation(s)
- Marco Garavelli
- Dipartimento di Chimica G. Ciamician, Università di Bologna, Via Selmi 2, 40126 Bologna, Italy.
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49
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Abstract
The present study of the cyclooctatetraene potential energy surface shows the presence of a bifurcation (valley ridge inflection point) in the intrinsic reaction coordinate path between the two transition states of D(8h) and D(4h) symmetries. This result is of capital importance for the correct understanding of the bond shifting and ring inversion processes in this compound.
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Affiliation(s)
- Obis Castaño
- Departamento de Química Física, Universidad de Alcalá, 28871 Alcalá de Henares, Madrid, Spain.
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