1
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Medhi B, Nath U, Sarma M. Revisiting fulgide photochromism: Mechanistic decoding and electron transport from computational exploration. J Chem Phys 2024; 160:154308. [PMID: 38634497 DOI: 10.1063/5.0203307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Accepted: 04/01/2024] [Indexed: 04/19/2024] Open
Abstract
The photochromic behavior of the fulgide molecule relies on ring-closure and ring-opening processes involving conical intersections during excited state transformation between isomers. The precise location and topography of these conical intersections significantly shape the decay process and fluorescence phenomena inherent to the molecule. This work combines electronic structure theory calculations using the density functional theory and wavefunction methods, as well as surface hopping simulation to analyze the photochemical behavior of an experimentally synthesized fulgide molecule, (E)-p-methylacetophenylisopropylidenesuccinic anhydride (1E). Our study reveals the conical intersection between the first excited state (S1) and the ground electronic state (S0), which emerges beyond the S1 minimum of 1E to the ring-closing side. The distinctive topography of this conical intersection appears to be sloped. These findings suggest a reduced quantum yield for the formation of the closed isomer, indicating a higher likelihood of reformation of the open isomer(s). The surface hopping simulation further supports this observation, revealing a mere ∼8% quantum yield for the formation of the closed isomer. In addition, the photoisomerization of the fulgide molecule initiates a cascade of conduction switching and holds great potential for applications in molecular electronics. Delving into the realm of molecular electronics, we have further examined the electron transport properties, disclosing the higher conductivity of the closed isomer.
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Affiliation(s)
- Biman Medhi
- Department of Chemistry, Indian Institute of Technology, Guwahati, Assam, India
| | - Upasana Nath
- Department of Chemistry, Indian Institute of Technology, Guwahati, Assam, India
| | - Manabendra Sarma
- Department of Chemistry, Indian Institute of Technology, Guwahati, Assam, India
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2
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Boeije Y, Olivucci M. From a one-mode to a multi-mode understanding of conical intersection mediated ultrafast organic photochemical reactions. Chem Soc Rev 2023; 52:2643-2687. [PMID: 36970950 DOI: 10.1039/d2cs00719c] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
This review discusses how ultrafast organic photochemical reactions are controlled by conical intersections, highlighting that decay to the ground-state at multiple points of the intersection space results in their multi-mode character.
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Affiliation(s)
- Yorrick Boeije
- Van 't Hoff Institute for Molecular Sciences (HIMS), University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Massimo Olivucci
- Chemistry Department, University of Siena, Via Aldo Moro n. 2, 53100 Siena, Italy
- Chemistry Department, Bowling Green State University, Overman Hall, Bowling Green, Ohio 43403, USA
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3
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Hermanns V, Scheurer M, Dreuw A, Wachtveitl J, Braun M, Heckel A. Electronic Circular Dichroism Unravels Atropisomers of a Broadly Absorbing Fulgide Derivative. CHEMPHOTOCHEM 2022. [DOI: 10.1002/cptc.202200057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Volker Hermanns
- Goethe-Universität Frankfurt am Main: Goethe-Universitat Frankfurt am Main Institute for Organic Chemistry and Chemical Biology GERMANY
| | - Maximilian Scheurer
- Heidelberg University Interdisciplinary Center for Scientific Computing GERMANY
| | - Andreas Dreuw
- Heidelberg University Interdisciplinary Center for Scientific Computing GERMANY
| | - Josef Wachtveitl
- Goethe-Universität Frankfurt am Main: Goethe-Universitat Frankfurt am Main Institute of Physical and Theoretical Chemistry GERMANY
| | - Markus Braun
- Goethe-Universität Frankfurt am Main: Goethe-Universitat Frankfurt am Main Institute of Physical and Theoretical Chemistry GERMANY
| | - Alexander Heckel
- University of Frankfurt Cluster of Excellence Macromolecular Complexes Max-von-Laue-Str. 9 60438 Frankfurt GERMANY
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4
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Farfan CA, Turner DB. A systematic model study quantifying how conical intersection topography modulates photochemical reactions. Phys Chem Chem Phys 2020; 22:20265-20283. [PMID: 32966428 DOI: 10.1039/d0cp03464a] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Despite their important role in photochemistry and expected presence in most polyatomic molecules, conical intersections have been thoroughly characterized in a comparatively small number of systems. Conical intersections can confer molecular photoreactivity or photostability, often with remarkable efficacy, due to their unique structure: at a conical intersection, the adiabatic potential energy surfaces of two or more electronic states are degenerate, enabling ultrafast decay from an excited state without radiative emission, known as nonadiabatic transfer. Furthermore, the precise conical intersection topography determines fundamental properties of photochemical processes, including excited-state decay rate, efficacy, and molecular products that are formed. However, these relationships have yet to be defined comprehensively. In this article, we use an adaptable computational model to investigate a variety of conical intersection topographies, simulate resulting nonadiabatic dynamics, and calculate key photochemical observables. We varied the vibrational mode frequencies to modify conical intersection topography systematically in four primary classes of conical intersections and quantified the resulting rate, total yield, and product yield of nonadiabatic decay. The results reveal that higher vibrational mode frequencies reduce nonadiabatic transfer, but increase the transfer rate and resulting photoproduct formation. These trends can inform progress toward experimental control of photochemical reactions or tuning of molecules' photochemical properties based on conical intersections and their topography.
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Affiliation(s)
- Camille A Farfan
- Department of Chemistry, New York University, New York, NY 10003, USA
| | - Daniel B Turner
- Department of Chemistry, New York University, New York, NY 10003, USA
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5
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Ma X, Maier J, Wenzel M, Friedrich A, Steffen A, Marder TB, Mitrić R, Brixner T. Direct observation of o-benzyne formation in photochemical hexadehydro-Diels-Alder ( hν-HDDA) reactions. Chem Sci 2020; 11:9198-9208. [PMID: 34123168 PMCID: PMC8163437 DOI: 10.1039/d0sc03184d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Reactive ortho-benzyne derivatives are believed to be the initial products of liquid-phase [4 + 2]-cycloadditions between a 1,3-diyne and an alkyne via what is known as a hexadehydro-Diels–Alder (HDDA) reaction. The UV/VIS spectroscopic observation of o-benzyne derivatives and their photochemical dynamics in solution, however, have not been reported previously. Herein, we report direct UV/VIS spectroscopic evidence for the existence of an o-benzyne in solution, and establish the dynamics of its formation in a photoinduced reaction. For this purpose, we investigated a bis-diyne compound using femtosecond transient absorption spectroscopy in the ultraviolet/visible region. In the first step, we observe excited-state isomerization on a sub-10 ps time scale. For identification of the o-benzyne species formed within 50–70 ps, and the corresponding photochemical hexadehydro-Diels–Alder (hν-HDDA) reactions, we employed two intermolecular trapping strategies. In the first case, the o-benzyne was trapped by a second bis-diyne, i.e., self-trapping. The self-trapping products were then identified in the transient absorption experiments by comparing their spectral features to those of the isolated products. In the second case, we used perylene for trapping and reconstructed the spectrum of the trapping product by removing the contribution of irrelevant species from the experimentally observed spectra. Taken together, the UV/VIS spectroscopic data provide a consistent picture for o-benzyne derivatives in solution as the products of photo-initiated HDDA reactions, and we deduce the time scales for their formation. We report the transient ultraviolet/visible absorption spectrum of an o-benzyne species in solution for the first time.![]()
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Affiliation(s)
- Xiaonan Ma
- Institut für Physikalische und Theoretische Chemie, Universität Würzburg Am Hubland 97074 Würzburg Germany .,Institute of Molecular Plus, Tianjin University No. 92 Weijin Road, Nankai District 300072 Tianjin China
| | - Jan Maier
- Institut für Anorganische Chemie, Institute for Sustainable Chemistry & Catalysis with Boron, Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Michael Wenzel
- Institut für Physikalische und Theoretische Chemie, Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Alexandra Friedrich
- Institut für Anorganische Chemie, Institute for Sustainable Chemistry & Catalysis with Boron, Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Andreas Steffen
- Institut für Anorganische Chemie, Institute for Sustainable Chemistry & Catalysis with Boron, Universität Würzburg Am Hubland 97074 Würzburg Germany .,Institut für Anorganische Chemie, Technische Universität Dortmund Otto-Hahn-Str.6 44227 Dortmund Germany
| | - Todd B Marder
- Institut für Anorganische Chemie, Institute for Sustainable Chemistry & Catalysis with Boron, Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Roland Mitrić
- Institut für Physikalische und Theoretische Chemie, Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Tobias Brixner
- Institut für Physikalische und Theoretische Chemie, Universität Würzburg Am Hubland 97074 Würzburg Germany
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6
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Oesterling S, Schalk O, Geng T, Thomas RD, Hansson T, de Vivie-Riedle R. Substituent effects on the relaxation dynamics of furan, furfural and β-furfural: a combined theoretical and experimental approach. Phys Chem Chem Phys 2018; 19:2025-2035. [PMID: 28009022 DOI: 10.1039/c6cp06240g] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
For the series furan, furfural and β-furfural we investigated the effect of substituents and their positioning on the photoinduced relaxation dynamics in a combined theoretical and experimental approach. Using time resolved photoelectron spectroscopy with a high intensity probe pulse, we can, for the first time, follow the whole deactivation process of furan through a two photon probe signal. Using the extended 2-electron 2-orbital model [Nenov et al., J. Chem. Phys., 2011, 135, 034304] we explain the formation of one central conical intersection and predict the influence of the aldehyde group of the derivatives on its geometry. This, as well as the relaxation mechanisms from photoexcitation to the final outcome was investigated using a variety of theoretical methods. Complete active space self consistent field was used for on-the-fly calculations while complete active space perturbation theory and coupled cluster theory were used to accurately describe critical configurations. Experiment and theory show the relaxation dynamics of furfural and β-furfural to be slowed down, and together they disclose an additional deactivation pathway, which is attributed to the nO lonepair state introduced with the aldehyde group.
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Affiliation(s)
- Sven Oesterling
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377 München, Germany.
| | - Oliver Schalk
- Department of Physics, Stockholm University, AlbaNova University Centre, Roslagstullsbacken 21, 106 91 Stockholm, Sweden
| | - Ting Geng
- Department of Physics, Stockholm University, AlbaNova University Centre, Roslagstullsbacken 21, 106 91 Stockholm, Sweden
| | - Richard D Thomas
- Department of Physics, Stockholm University, AlbaNova University Centre, Roslagstullsbacken 21, 106 91 Stockholm, Sweden
| | - Tony Hansson
- Department of Physics, Stockholm University, AlbaNova University Centre, Roslagstullsbacken 21, 106 91 Stockholm, Sweden
| | - Regina de Vivie-Riedle
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13, 81377 München, Germany.
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7
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García JS, Talotta F, Alary F, Dixon IM, Heully JL, Boggio-Pasqua M. A Theoretical Study of the N to O Linkage Photoisomerization Efficiency in a Series of Ruthenium Mononitrosyl Complexes. Molecules 2017; 22:E1667. [PMID: 28984831 PMCID: PMC6151532 DOI: 10.3390/molecules22101667] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 09/29/2017] [Accepted: 10/03/2017] [Indexed: 11/17/2022] Open
Abstract
Ruthenium nitrosyl complexes are fascinating versatile photoactive molecules that can either undergo NO linkage photoisomerization or NO photorelease. The photochromic response of three ruthenium mononitrosyl complexes, trans-[RuCl(NO)(py)₄]2+, trans-[RuBr(NO)(py)₄]2+, and trans-(Cl,Cl)[RuCl₂(NO)(tpy)]⁺, has been investigated using density functional theory and time-dependent density functional theory. The N to O photoisomerization pathways and absorption properties of the various stable and metastable species have been computed, providing a simple rationalization of the photoconversion trend in this series of complexes. The dramatic decrease of the N to O photoisomerization efficiency going from the first to the last complex is mainly attributed to an increase of the photoproduct absorption at the irradiation wavelength, rather than a change in the photoisomerization pathways.
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Affiliation(s)
- Juan Sanz García
- Laboratoire de Chimie et Physique Quantiques, IRSAMC, CNRS et Université Toulouse 3, 118 route de Narbonne, 31062 Toulouse, France.
- Present address: Institut de Recherche de Chimie Paris, PSL Research University, CNRS, Chimie ParisTech, 11 Rue Pierre et Marie Curie, F-75005 Paris, France.
| | - Francesco Talotta
- Laboratoire de Chimie et Physique Quantiques, IRSAMC, CNRS et Université Toulouse 3, 118 route de Narbonne, 31062 Toulouse, France.
| | - Fabienne Alary
- Laboratoire de Chimie et Physique Quantiques, IRSAMC, CNRS et Université Toulouse 3, 118 route de Narbonne, 31062 Toulouse, France.
| | - Isabelle M Dixon
- Laboratoire de Chimie et Physique Quantiques, IRSAMC, CNRS et Université Toulouse 3, 118 route de Narbonne, 31062 Toulouse, France.
| | - Jean-Louis Heully
- Laboratoire de Chimie et Physique Quantiques, IRSAMC, CNRS et Université Toulouse 3, 118 route de Narbonne, 31062 Toulouse, France.
| | - Martial Boggio-Pasqua
- Laboratoire de Chimie et Physique Quantiques, IRSAMC, CNRS et Université Toulouse 3, 118 route de Narbonne, 31062 Toulouse, France.
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8
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Mahmood T, Kosar N, Ayub K. DFT study of acceleration of electrocyclization in photochromes under radical cationic conditions: Comparison with recent experimental data. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.05.031] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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9
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Kumpulainen T, Lang B, Rosspeintner A, Vauthey E. Ultrafast Elementary Photochemical Processes of Organic Molecules in Liquid Solution. Chem Rev 2016; 117:10826-10939. [DOI: 10.1021/acs.chemrev.6b00491] [Citation(s) in RCA: 249] [Impact Index Per Article: 31.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Tatu Kumpulainen
- Department of Physical Chemistry,
Sciences II, University of Geneva, 30 Quai Ernest Ansermet, CH-1211 Geneva 4, Switzerland
| | - Bernhard Lang
- Department of Physical Chemistry,
Sciences II, University of Geneva, 30 Quai Ernest Ansermet, CH-1211 Geneva 4, Switzerland
| | - Arnulf Rosspeintner
- Department of Physical Chemistry,
Sciences II, University of Geneva, 30 Quai Ernest Ansermet, CH-1211 Geneva 4, Switzerland
| | - Eric Vauthey
- Department of Physical Chemistry,
Sciences II, University of Geneva, 30 Quai Ernest Ansermet, CH-1211 Geneva 4, Switzerland
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10
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Slavov C, Boumrifak C, Hammer CA, Trojanowski P, Chen X, Lees WJ, Wachtveitl J, Braun M. The ultrafast reactions in the photochromic cycle of water-soluble fulgimide photoswitches. Phys Chem Chem Phys 2016; 18:10289-96. [DOI: 10.1039/c5cp06866e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
High polarity and protic nature of the solvent strongly influence the reaction dynamics of a photochromic water-soluble indolylfulgimide.
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Affiliation(s)
- C. Slavov
- Institute of Physical and Theoretical Chemistry
- Goethe University
- 60438 Frankfurt/Main
- Germany
| | - C. Boumrifak
- Institute of Physical and Theoretical Chemistry
- Goethe University
- 60438 Frankfurt/Main
- Germany
| | - C. A. Hammer
- Institute of Physical and Theoretical Chemistry
- Goethe University
- 60438 Frankfurt/Main
- Germany
| | - P. Trojanowski
- Institute of Physical and Theoretical Chemistry
- Goethe University
- 60438 Frankfurt/Main
- Germany
| | - X. Chen
- Biomolecular Sciences Institute
- School of Integrated Sciences and Humanities and Department of Chemistry and Bio-chemistry
- Florida International University
- Miami
- USA
| | - W. J. Lees
- Biomolecular Sciences Institute
- School of Integrated Sciences and Humanities and Department of Chemistry and Bio-chemistry
- Florida International University
- Miami
- USA
| | - J. Wachtveitl
- Institute of Physical and Theoretical Chemistry
- Goethe University
- 60438 Frankfurt/Main
- Germany
| | - M. Braun
- Institute of Physical and Theoretical Chemistry
- Goethe University
- 60438 Frankfurt/Main
- Germany
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11
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Boggio-Pasqua M, Garavelli M. Rationalization and Design of Enhanced Photoinduced Cycloreversion in Photochromic Dimethyldihydropyrenes by Theoretical Calculations. J Phys Chem A 2015; 119:6024-32. [PMID: 25582806 DOI: 10.1021/jp5118773] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This study presents a computational investigation of the initial step of the dimethyldihydropyrene (DHP) to cyclophanediene (CPD) photoinduced ring-opening reaction using time-dependent density functional theory (TD-DFT). In particular, the photochemical path corresponding to the formation of the CPD precursor (CPD*) on the zwitterionic state is scrutinized. The TD-DFT approach was first validated on the parent compound against accurate ab initio calculations. It confirms that CPD* formation is efficiently quenched in this system by an easily accessible S2/S1 conical intersection located in the vicinity of the CPD* minimum and leading to a locally excited state minimum responsible for DHP luminescence. Increased ring-opening quantum yields were observed in benzo[e]-fused-DHP (DHP-1), isobutenyl-DHP (DHP-2), and naphthoyl-DHP (DHP-3). The calculations show that CPD* formation is much more favorable in these systems, either due to an inversion of electronic states in DHP-1, suppressing the formation of the locally excited state, or due to efficient stabilization of CPD* on the S1 potential energy surface in DHP-2 and DHP-3. Both effects can be combined in a rationally designed benzo[e]-fused-naphthoyl-DHP (DHP-4) for which we anticipate an unprecedented efficiency.
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Affiliation(s)
- Martial Boggio-Pasqua
- †Laboratoire de Chimie et Physique Quantiques (UMR5626), CNRS et Université de Toulouse 3, Toulouse, France
| | - Marco Garavelli
- ‡Laboratoire de Chimie (UMR5182), École Normale Supérieure de Lyon/CNRS et Université de Lyon 1, Lyon, France.,§Dipartimento di Chimica "G. Ciamician", Universita' degli Studi di Bologna, Via Selmi 2, I-40126 Bologna, Italy
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12
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Slavov C, Bellakbil N, Wahl J, Mayer K, Rück-Braun K, Burghardt I, Wachtveitl J, Braun M. Ultrafast coherent oscillations reveal a reactive mode in the ring-opening reaction of fulgides. Phys Chem Chem Phys 2015; 17:14045-53. [DOI: 10.1039/c5cp01878a] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ultrafast coherent dynamics reveals a low frequency vibrational mode governing the photochromic ring-opening reaction in indolylfulgide molecular switches.
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Affiliation(s)
- C. Slavov
- Institute of Physical and Theoretical Chemistry
- Goethe University
- 60438 Frankfurt/Main
- Germany
| | - N. Bellakbil
- Institute of Physical and Theoretical Chemistry
- Goethe University
- 60438 Frankfurt/Main
- Germany
| | - J. Wahl
- Institute of Physical and Theoretical Chemistry
- Goethe University
- 60438 Frankfurt/Main
- Germany
| | - K. Mayer
- Department of Chemistry
- Technical University Berlin
- 10623 Berlin
- Germany
| | - K. Rück-Braun
- Department of Chemistry
- Technical University Berlin
- 10623 Berlin
- Germany
| | - I. Burghardt
- Institute of Physical and Theoretical Chemistry
- Goethe University
- 60438 Frankfurt/Main
- Germany
| | - J. Wachtveitl
- Institute of Physical and Theoretical Chemistry
- Goethe University
- 60438 Frankfurt/Main
- Germany
| | - M. Braun
- Institute of Physical and Theoretical Chemistry
- Goethe University
- 60438 Frankfurt/Main
- Germany
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13
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14
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Göttle AJ, Alary F, Dixon IM, Heully JL, Boggio-Pasqua M. Unravelling the S → O linkage photoisomerization mechanisms in cis- and trans-[Ru(bpy)2(DMSO)2](2+) using density functional theory. Inorg Chem 2014; 53:6752-60. [PMID: 24932513 DOI: 10.1021/ic500546q] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A mechanistic study of the intramolecular S → O linkage photoisomerization in the cis and trans isomers of [Ru(bpy)2(DMSO)2](2+) was performed using density functional theory. This study reveals that for the cis isomer the linkage photoisomerization of the two DMSO ligands occurs sequentially in the lowest triplet excited state and can either be achieved by a one-photon or by a two-photon mechanism. A mechanistic picture of the S → O photoisomerization of the trans isomer is also proposed. This work especially highlights that both adiabatic and nonadiabatic processes are involved in these mechanisms and that their coexistence is responsible for the rich photophysics and photochemical properties observed experimentally for the studied complexes. The different luminescent behavior experimentally observed at low temperature between the cis and trans isomers is rationalized based on the peculiarity of the topology of the triplet excited-state potential energy surfaces.
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Affiliation(s)
- Adrien J Göttle
- Laboratoire de Chimie et Physique Quantiques, UMR 5626 CNRS/Université Paul Sabatier-Toulouse III , 118 route de Narbonne, 31062 Toulouse, France
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15
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Geometry deformation and mesomeric effect at the minimal-energy conical intersections and their relationship to the photoreactivity of indolylfulgides: A TD-DFT study. Chem Phys Lett 2014. [DOI: 10.1016/j.cplett.2014.01.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Arruda BC, Sension RJ. Ultrafast polyene dynamics: the ring opening of 1,3-cyclohexadiene derivatives. Phys Chem Chem Phys 2014; 16:4439-55. [DOI: 10.1039/c3cp54767a] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Schönborn JB, Hartke B. Importance of a low-lying nπ*-state in the photo-isomerisation reaction of Z-methylfurylfulgide. J Photochem Photobiol A Chem 2013. [DOI: 10.1016/j.jphotochem.2013.04.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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18
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Schalk O, Broman SL, Petersen MÅ, Khakhulin DV, Brogaard RY, Nielsen MB, Boguslavskiy AE, Stolow A, Sølling TI. On the Condensed Phase Ring-Closure of Vinylheptafulvalene and Ring-Opening of Gaseous Dihydroazulene. J Phys Chem A 2013; 117:3340-7. [DOI: 10.1021/jp400616c] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Oliver Schalk
- Stockholm University, AlbaNova University
Center, Roslagstullsbacken 21, SE-10961 Stockholm,
Sweden
- National Research Council, Sussex Drive 100, K1A 0R6, Ottawa, Canada
- Lehrstuhl für BioMolekulare
Optik, Ludwig-Maximilians-Universität, Oettingenstrasse 67, 80538 München, Germany
| | - Søren L. Broman
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100
Copenhagen, Denmark
| | - Michael Å. Petersen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100
Copenhagen, Denmark
| | - Dmitry V. Khakhulin
- European Synchrotron Radiation Facility, 6 rue Jules Horowitz, BP220, 38043
Grenoble, France
| | - Rasmus Y. Brogaard
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100
Copenhagen, Denmark
- Department of
Chemical Engineering, Stanford University, Stanford, California 94305, United
States
| | - Mogens Brøndsted Nielsen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100
Copenhagen, Denmark
| | | | - Albert Stolow
- National Research Council, Sussex Drive 100, K1A 0R6, Ottawa, Canada
| | - Theis I. Sølling
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100
Copenhagen, Denmark
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19
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Krauter CM, Möhring J, Buckup T, Pernpointner M, Motzkus M. Ultrafast branching in the excited state of coumarin and umbelliferone. Phys Chem Chem Phys 2013; 15:17846-61. [DOI: 10.1039/c3cp52719k] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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