1
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Titov E. The Role of Double Excitations in Exciton Dynamics of Multiazobenzenes: Trisazobenzenophane as a Test Case. J Phys Chem Lett 2024; 15:7482-7488. [PMID: 39011968 DOI: 10.1021/acs.jpclett.4c01608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/17/2024]
Abstract
Molecular exciton dynamics underlie energy and charge transfer processes in organic multichromophoric systems. A particularly interesting class of the latter is multiphotochromic systems made of molecules capable of photochemical transformations. Exciton dynamics in assemblies of photoswitches have been recently investigated using either the molecular exciton model or supermolecular configuration interaction (CI) singles, both approaches being based on a semiempirical Hamiltonian and combined with surface hopping molecular dynamics. Here, we study how inclusion of double excitations in nonadiabatic dynamics simulations affects exciton dynamics of multiazobenzenes, using trisazobenzenophane as an example. We find that both CI singles and CI singles and doubles yield virtually the same time scale of dynamical exciton localization, ∼50 fs for the studied multiazobenzene. However, inclusion of double excitations considerably affects the excited state lifetimes and isomerization quantum yields.
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Affiliation(s)
- Evgenii Titov
- University of Potsdam, Institute of Chemistry, Theoretical Chemistry, Karl-Liebknecht-Straße 24-25, 14476 Potsdam, Germany
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2
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Frassi D, Padula G, Granucci G. Photoisomerization of Spiropyran in Solution: A Surface Hopping Investigation. J Phys Chem B 2024; 128:5246-5253. [PMID: 38760327 DOI: 10.1021/acs.jpcb.4c00778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/19/2024]
Abstract
We performed a computational investigation of the photoisomerization of an unsubstituted spiropyran in solution using surface hopping molecular dynamics simulations in a semiempirical framework. To bring out the solvent effects on the excited state dynamics, we have run simulations in three different environments: chloroform, methanol, and ethylene glycol. We show that the interaction with a moderately polar solvent such as chloroform has little effect on the dynamics when compared to vacuum results previously obtained by our group. At variance, the interaction with the protic solvents considered considerably affects the reaction mechanism, the quantum yield, and the excited state lifetimes.
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Affiliation(s)
- Dario Frassi
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, via Moruzzi 13, 56124 Pisa, Italy
| | - Giancarlo Padula
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, via Moruzzi 13, 56124 Pisa, Italy
| | - Giovanni Granucci
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, via Moruzzi 13, 56124 Pisa, Italy
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3
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Morreale D, Persico M. Topology of Conical Intersection Seams and the Geometric Phase. J Phys Chem A 2024; 128:1707-1714. [PMID: 38408203 DOI: 10.1021/acs.jpca.3c07042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
In this paper, we demonstrate two topological properties of crossing seams, that is, the sets of points in the N-dimensional space of nuclear coordinates where two electronic eigenstates are degenerate. We shall examine the typical case of states of the same spin with accidental degeneracies, whereby the crossing seam is of dimension N - 2. The first property we demonstrate is that a crossing seam has no boundary, therefore, it must either extend asymptotically to infinite values of one or more coordinates or wrap on itself. The second property is that two (or more) crossing seams can intersect each other but in such a way that neither of them ends at the intersection. When N = 3, the crossing seam is a line in a 3D space; this is so in triatomic molecules but also in reduced dimensionality treatments of larger polyatomics. The above-mentioned rules then mean that the crossing seam is a line of infinite length or a closed loop and can split into three branches but not in two. The example of the first two excited 1A' states of H2Cl+ illustrates these rules and shows their usefulness for computational search and characterization of crossing seams.
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Affiliation(s)
- Daniel Morreale
- Department of Chemistry and Industrial Chemistry, University of Pisa, v. G. Moruzzi 13, Pisa 56126, Italy
| | - Maurizio Persico
- Department of Chemistry and Industrial Chemistry, University of Pisa, v. G. Moruzzi 13, Pisa 56126, Italy
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4
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Titov E. Visible Light Induced Exciton Dynamics and trans-to- cis Isomerization in Azobenzene Aggregates: Insights from Surface Hopping/Semiempirical Configuration Interaction Molecular Dynamics Simulations. ACS OMEGA 2024; 9:8520-8532. [PMID: 38405525 PMCID: PMC10882624 DOI: 10.1021/acsomega.3c09900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 01/19/2024] [Accepted: 01/24/2024] [Indexed: 02/27/2024]
Abstract
Assemblies of photochromic molecules feature exciton states, which govern photochemical and photophysical processes in multichromophoric systems. Understanding the photoinduced dynamics of the assemblies requires nonadiabatic treatment involving multiple exciton states and numerous nuclear degrees of freedom, thus posing a challenge for simulations. In this work, we address this challenge for aggregates of azobenzene, a prototypical molecular switch, performing on-the-fly surface hopping calculations combined with semiempirical configuration interaction electronic structure and augmented with transition density matrix analysis to characterize exciton evolution. Specifically, we consider excitation of azobenzene tetramers in the nπ* absorption band located in the visible (blue) part of the electromagnetic spectrum, thus extending our recent work on dynamics after ππ* excitation corresponding to the ultraviolet region [Titov, J. Phys. Chem. C2023, 127, 13678-13688]. We find that the nπ* excitons, which are initially strongly localized by ground-state conformational disorder, undergo further (very strong) localization during short-time photodynamics. This excited-state localization process is extremely ultrafast, occurring within the first 10 fs of photodynamics. We observe virtually no exciton transfer of the localized excitons in the nπ* manifold. However, the transfer may occur via secondary pathways involving ππ* states or the ground state. Moreover, we find that the nπ* quantum yields of the trans-to-cis isomerization are reduced in the aggregated state.
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Affiliation(s)
- Evgenii Titov
- Institute of Chemistry, Theoretical
Chemistry, University of Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam, Germany
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5
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Pieroni C, Sangiogo Gil E, Ibele LM, Persico M, Granucci G, Agostini F. Investigating the Photodynamics of trans-Azobenzene with Coupled Trajectories. J Chem Theory Comput 2024; 20:580-596. [PMID: 38177105 DOI: 10.1021/acs.jctc.3c00978] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
In this work, we present the first implementation of coupled-trajectory Tully surface hopping (CT-TSH) suitable for applications to molecular systems. We combine CT-TSH with the semiempirical floating occupation molecular orbital-configuration interaction electronic structure method to investigate the photoisomerization dynamics of trans-azobenzene. Our study shows that CT-TSH can capture correctly decoherence effects in this system, yielding consistent electronic and nuclear dynamics in agreement with (standard) decoherence-corrected TSH. Specifically, CT-TSH is derived from the exact factorization and the electronic coefficients' evolution is directly influenced by the coupling of trajectories, resulting in the improvement of internal consistency if compared to standard TSH.
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Affiliation(s)
- Carlotta Pieroni
- CNRS, Institut de Chimie Physique UMR8000, Université Paris-Saclay, 91405 Orsay, France
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via G. Moruzzi 13, 56124 Pisa, Italy
| | - Eduarda Sangiogo Gil
- CNRS, Institut de Chimie Physique UMR8000, Université Paris-Saclay, 91405 Orsay, France
| | - Lea M Ibele
- CNRS, Institut de Chimie Physique UMR8000, Université Paris-Saclay, 91405 Orsay, France
| | - Maurizio Persico
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via G. Moruzzi 13, 56124 Pisa, Italy
| | - Giovanni Granucci
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, via G. Moruzzi 13, 56124 Pisa, Italy
| | - Federica Agostini
- CNRS, Institut de Chimie Physique UMR8000, Université Paris-Saclay, 91405 Orsay, France
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6
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Mandal A, Taylor MA, Weight BM, Koessler ER, Li X, Huo P. Theoretical Advances in Polariton Chemistry and Molecular Cavity Quantum Electrodynamics. Chem Rev 2023; 123:9786-9879. [PMID: 37552606 PMCID: PMC10450711 DOI: 10.1021/acs.chemrev.2c00855] [Citation(s) in RCA: 31] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Indexed: 08/10/2023]
Abstract
When molecules are coupled to an optical cavity, new light-matter hybrid states, so-called polaritons, are formed due to quantum light-matter interactions. With the experimental demonstrations of modifying chemical reactivities by forming polaritons under strong light-matter interactions, theorists have been encouraged to develop new methods to simulate these systems and discover new strategies to tune and control reactions. This review summarizes some of these exciting theoretical advances in polariton chemistry, in methods ranging from the fundamental framework to computational techniques and applications spanning from photochemistry to vibrational strong coupling. Even though the theory of quantum light-matter interactions goes back to the midtwentieth century, the gaps in the knowledge of molecular quantum electrodynamics (QED) have only recently been filled. We review recent advances made in resolving gauge ambiguities, the correct form of different QED Hamiltonians under different gauges, and their connections to various quantum optics models. Then, we review recently developed ab initio QED approaches which can accurately describe polariton states in a realistic molecule-cavity hybrid system. We then discuss applications using these method advancements. We review advancements in polariton photochemistry where the cavity is made resonant to electronic transitions to control molecular nonadiabatic excited state dynamics and enable new photochemical reactivities. When the cavity resonance is tuned to the molecular vibrations instead, ground-state chemical reaction modifications have been demonstrated experimentally, though its mechanistic principle remains unclear. We present some recent theoretical progress in resolving this mystery. Finally, we review the recent advances in understanding the collective coupling regime between light and matter, where many molecules can collectively couple to a single cavity mode or many cavity modes. We also lay out the current challenges in theory to explain the observed experimental results. We hope that this review will serve as a useful document for anyone who wants to become familiar with the context of polariton chemistry and molecular cavity QED and thus significantly benefit the entire community.
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Affiliation(s)
- Arkajit Mandal
- Department
of Chemistry, University of Rochester, 120 Trustee Road, Rochester, New York 14627, United States
- Department
of Chemistry, Columbia University, New York, New York 10027, United States
| | - Michael A.D. Taylor
- The
Institute of Optics, Hajim School of Engineering, University of Rochester, Rochester, New York 14627, United States
| | - Braden M. Weight
- Department
of Physics and Astronomy, University of
Rochester, Rochester, New York 14627, United
States
| | - Eric R. Koessler
- Department
of Chemistry, University of Rochester, 120 Trustee Road, Rochester, New York 14627, United States
| | - Xinyang Li
- Department
of Chemistry, University of Rochester, 120 Trustee Road, Rochester, New York 14627, United States
- Theoretical
Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Pengfei Huo
- Department
of Chemistry, University of Rochester, 120 Trustee Road, Rochester, New York 14627, United States
- The
Institute of Optics, Hajim School of Engineering, University of Rochester, Rochester, New York 14627, United States
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7
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Osella S, Granucci G, Persico M, Knippenberg S. Dual photoisomerization mechanism of azobenzene embedded in a lipid membrane. J Mater Chem B 2023; 11:2518-2529. [PMID: 36852914 DOI: 10.1039/d2tb02767d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
The photoisomerization of chromophores embedded in biological environments is of high importance for biomedical applications, but it is still challenging to define the photoisomerization mechanism both experimentally and computationally. We present here a computational study of the azobenzene molecule embedded in a DPPC lipid membrane, and assess the photoisomerization mechanism by means of the quantum mechanics/molecular mechanics surface hopping (QM/MM-SH) method. We observe that while the trans-to-cis isomerization is a slow process governed by a torsional mechanism due to the strong interaction with the environment, the cis-to-trans mechanism is completed in sub-ps time scale and is governed by a pedal-like mechanism in which both weaker interactions with the environment and a different geometry of the potential energy surface play a key role.
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Affiliation(s)
- Silvio Osella
- Chemical and Biological Systems Simulation Lab, Centre of New Technologies, University of Warsaw, Banacha 2C, 02-097 Warsaw, Poland. .,Materials and Process Simulation Center (MSC), California Institute of Technology, MC 139-74, Pasadena, CA, 91125, USA
| | - Giovanni Granucci
- Dipartimento di Chimica e Chimica Industriale, Universitá di Pisa, v. Moruzzi 13, I-56124 Pisa, Italy
| | - Maurizio Persico
- Dipartimento di Chimica e Chimica Industriale, Universitá di Pisa, v. Moruzzi 13, I-56124 Pisa, Italy
| | - Stefan Knippenberg
- Hasselt University, Theory Lab, Agoralaan Building D, 3590 Diepenbeek, Belgium.,Université Libre de Bruxelles, Spectroscopy, Quantum Chemistry and Atmospheric Remote Sensing (SQUARES), 50 Avenue F. Roosevelt, C.P. 160/09, B-1050 Brussels, Belgium.
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8
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Axelrod S, Shakhnovich E, Gómez-Bombarelli R. Excited state non-adiabatic dynamics of large photoswitchable molecules using a chemically transferable machine learning potential. Nat Commun 2022; 13:3440. [PMID: 35705543 PMCID: PMC9200747 DOI: 10.1038/s41467-022-30999-w] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 05/23/2022] [Indexed: 12/31/2022] Open
Abstract
Light-induced chemical processes are ubiquitous in nature and have widespread technological applications. For example, photoisomerization can allow a drug with a photo-switchable scaffold such as azobenzene to be activated with light. In principle, photoswitches with desired photophysical properties like high isomerization quantum yields can be identified through virtual screening with reactive simulations. In practice, these simulations are rarely used for screening, since they require hundreds of trajectories and expensive quantum chemical methods to account for non-adiabatic excited state effects. Here we introduce a diabatic artificial neural network (DANN), based on diabatic states, to accelerate such simulations for azobenzene derivatives. The network is six orders of magnitude faster than the quantum chemistry method used for training. DANN is transferable to azobenzene molecules outside the training set, predicting quantum yields for unseen species that are correlated with experiment. We use the model to virtually screen 3100 hypothetical molecules, and identify novel species with high predicted quantum yields. The model predictions are confirmed using high-accuracy non-adiabatic dynamics. Our results pave the way for fast and accurate virtual screening of photoactive compounds.
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Affiliation(s)
- Simon Axelrod
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, 02138, USA.,Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Eugene Shakhnovich
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, 02138, USA
| | - Rafael Gómez-Bombarelli
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.
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9
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Gil ES, Granucci G, Persico M. Surface Hopping Dynamics with the Frenkel Exciton Model in a Semiempirical Framework. J Chem Theory Comput 2021; 17:7373-7383. [PMID: 34843643 PMCID: PMC8675141 DOI: 10.1021/acs.jctc.1c00942] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
We present an implementation
of the Frenkel exciton model in the
framework of the semiempirical floating occupation molecular orbitals-configuration
interaction (FOMO-CI) electronic structure method, aimed at simulating
the dynamics of multichromophoric systems, in which excitation energy
transfer can occur, by a very efficient approach. The nonadiabatic
molecular dynamics is here dealt with by the surface hopping method,
but the implementation we proposed is compatible with other dynamical
approaches. The exciton coupling is computed either exactly, within
the semiempirical approximation considered, or by resorting to transition
atomic charges. The validation of our implementation is carried out
on the trans-azobenzeno-2S-phane (2S-TTABP), formed
by two azobenzene units held together by sulfur bridges, taken as
a minimal model of multichromophoric systems, in which both strong
and weak exciton couplings are present.
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Affiliation(s)
- Eduarda Sangiogo Gil
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, via Moruzzi 13, 56124 Pisa, Italy
| | - Giovanni Granucci
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, via Moruzzi 13, 56124 Pisa, Italy
| | - Maurizio Persico
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, via Moruzzi 13, 56124 Pisa, Italy
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10
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Titov E, Sharma A, Lomadze N, Saalfrank P, Santer S, Bekir M. Photoisomerization of an Azobenzene‐Containing Surfactant Within a Micelle. CHEMPHOTOCHEM 2021. [DOI: 10.1002/cptc.202100103] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Evgenii Titov
- Theoretical Chemistry Institute of Chemistry University of Potsdam Karl-Liebknecht-Straße 24–25 14476 Potsdam Germany
| | - Anjali Sharma
- Experimental Physics Institute of Physics and Astronomy University of Potsdam Karl-Liebknecht-Straße 24–25 14476 Potsdam Germany
| | - Nino Lomadze
- Experimental Physics Institute of Physics and Astronomy University of Potsdam Karl-Liebknecht-Straße 24–25 14476 Potsdam Germany
| | - Peter Saalfrank
- Theoretical Chemistry Institute of Chemistry University of Potsdam Karl-Liebknecht-Straße 24–25 14476 Potsdam Germany
| | - Svetlana Santer
- Experimental Physics Institute of Physics and Astronomy University of Potsdam Karl-Liebknecht-Straße 24–25 14476 Potsdam Germany
| | - Marek Bekir
- Experimental Physics Institute of Physics and Astronomy University of Potsdam Karl-Liebknecht-Straße 24–25 14476 Potsdam Germany
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11
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Titov E. On the Low-Lying Electronically Excited States of Azobenzene Dimers: Transition Density Matrix Analysis. MOLECULES (BASEL, SWITZERLAND) 2021; 26:molecules26144245. [PMID: 34299521 PMCID: PMC8303869 DOI: 10.3390/molecules26144245] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/08/2021] [Accepted: 07/09/2021] [Indexed: 11/16/2022]
Abstract
Azobenzene-containing molecules may associate with each other in systems such as self-assembled monolayers or micelles. The interaction between azobenzene units leads to a formation of exciton states in these molecular assemblies. Apart from local excitations of monomers, the electronic transitions to the exciton states may involve charge transfer excitations. Here, we perform quantum chemical calculations and apply transition density matrix analysis to quantify local and charge transfer contributions to the lowest electronic transitions in azobenzene dimers of various arrangements. We find that the transitions to the lowest exciton states of the considered dimers are dominated by local excitations, but charge transfer contributions become sizable for some of the lowest ππ* electronic transitions in stacked and slip-stacked dimers at short intermolecular distances. In addition, we assess different ways to partition the transition density matrix between fragments. In particular, we find that the inclusion of the atomic orbital overlap has a pronounced effect on quantifying charge transfer contributions if a large basis set is used.
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Affiliation(s)
- Evgenii Titov
- Theoretical Chemistry, Institute of Chemistry, University of Potsdam, Karl-Liebknecht-Straße 24-25, 14476 Potsdam, Germany
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12
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Granucci G, Padula G. Photoisomerization dynamics of spiropyran: A surface-hopping investigation. J Chem Phys 2021; 154:124312. [PMID: 33810661 DOI: 10.1063/5.0045691] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
In the present work, we performed a computational investigation of the photoisomerization of spiro[1,3-dihydroindole-2,2'-chromene] [spiropyran (SP)] to merocyanine. The electronic energies and wavefunctions were obtained from configuration interaction calculations, using the floating occupation molecular orbital method, in a semiempirical framework. The parameters of the semiempirical Hamiltonian were re-optimized to reproduce ab initio literature data for SP. In our dynamics simulations, we considered, besides S0, the excited states S1, S2, and S3, which are very close in energy in the Franck-Condon region. We obtained a singlet lifetime of 0.67 ps, in line with the experimental results. We found the photoisomerization quantum yield to depend on the electronic state initially populated.
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Affiliation(s)
- Giovanni Granucci
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, Via Moruzzi 13, 56124 Pisa, Italy
| | - Giancarlo Padula
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, Via Moruzzi 13, 56124 Pisa, Italy
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13
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Coccia E, Fregoni J, Guido CA, Marsili M, Pipolo S, Corni S. Hybrid theoretical models for molecular nanoplasmonics. J Chem Phys 2020; 153:200901. [PMID: 33261492 DOI: 10.1063/5.0027935] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
The multidisciplinary nature of the research in molecular nanoplasmonics, i.e., the use of plasmonic nanostructures to enhance, control, or suppress properties of molecules interacting with light, led to contributions from different theory communities over the years, with the aim of understanding, interpreting, and predicting the physical and chemical phenomena occurring at molecular- and nano-scale in the presence of light. Multiscale hybrid techniques, using a different level of description for the molecule and the plasmonic nanosystems, permit a reliable representation of the atomistic details and of collective features, such as plasmons, in such complex systems. Here, we focus on a selected set of topics of current interest in molecular plasmonics (control of electronic excitations in light-harvesting systems, polaritonic chemistry, hot-carrier generation, and plasmon-enhanced catalysis). We discuss how their description may benefit from a hybrid modeling approach and what are the main challenges for the application of such models. In doing so, we also provide an introduction to such models and to the selected topics, as well as general discussions on their theoretical descriptions.
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Affiliation(s)
- E Coccia
- Dipartimento di Scienze Chimiche e Farmaceutiche, Universit di Trieste, via L. Giorgieri 1, 34127 Trieste, Italy
| | - J Fregoni
- Dipartimento di Scienze Fisiche, Informatiche e Matematiche, Universit di Modena e Reggio Emilia, via Campi 213/A, 41125 Modena, Italy
| | - C A Guido
- Dipartimento di Scienze Chimiche, Universit di Padova, via F. Marzolo 1, 35131 Padova, Italy
| | - M Marsili
- Dipartimento di Scienze Chimiche, Universit di Padova, via F. Marzolo 1, 35131 Padova, Italy
| | - S Pipolo
- Université de Lille, CNRS, Centrale Lille, ENSCL, Université d'Artois UMR 8181-UCCS Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - S Corni
- Istituto Nanoscienze-CNR, via Campi 213/A, 41125 Modena, Italy
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14
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Fregoni J, Corni S, Persico M, Granucci G. Photochemistry in the strong coupling regime: A trajectory surface hopping scheme. J Comput Chem 2020; 41:2033-2044. [PMID: 32609934 PMCID: PMC7891387 DOI: 10.1002/jcc.26369] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 06/04/2020] [Accepted: 06/04/2020] [Indexed: 12/22/2022]
Abstract
The strong coupling regime between confined light and organic molecules turned out to be promising in modifying both the ground state and the excited states properties. Under this peculiar condition, the electronic states of the molecule are mixed with the quantum states of light. The dynamical processes occurring on such hybrid states undergo several modifications accordingly. Hence, the dynamical description of chemical reactivity in polaritonic systems needs to explicitly take into account the photon degrees of freedom and nonadiabatic events. With the aim of describing photochemical polaritonic processes, in the present work, we extend the direct trajectory surface hopping scheme to investigate photochemistry under strong coupling between light and matter.
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Affiliation(s)
- Jacopo Fregoni
- Dipartimento di Scienze Fisiche Informatiche e MatematicheUniversity of Modena and Reggio EmiliaModenaItaly
| | - Stefano Corni
- Dipartimento di Scienze ChimicheUniversity of PadovaPadovaItaly
| | - Maurizio Persico
- Dipartimento di Chimica e Chimica IndustrialeUniversity of PisaPisaItaly
| | - Giovanni Granucci
- Dipartimento di Chimica e Chimica IndustrialeUniversity of PisaPisaItaly
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15
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Abstract
Abstract
Excited-state intramolecular proton transfers (ESIPT) are one of the fastest reactions in chemistry (<100 fs) which – among other features like high photostability – makes them an important reaction class for molecular switches. ESIPTs can be coupled with double bond rotation/isomerization, so that molecules can act as “molecular cranes”, facilitating long-range proton transfer. A versatile model system is 7-hydroxy-4-methylquinoline-8-carbaldehyde (HMQCA): it features two proton-accepting sites, two stable ground-state isomers and should allow for easy derivatization. There is also experimental and theoretical reference data available, however, only for static properties, e.g. ground-state IR spectra or potential energy surface scans. In this contribution we show the results of full-dimensional surface-hopping molecular dynamics (MD) of HMQCA after photo-excitation, employing semiempirical quantum mechanics coupled to floating-occupation configuration interaction. The results support the potential of HMQCA as prototype system for directed proton transport by ESIPT.
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Affiliation(s)
- Tim Raeker
- Institut für Physikalische Chemie, Christian-Albrechts-Universität zu Kiel , Olshausenstraße 40 , D-24098 Kiel , Germany
| | - Bernd Hartke
- Institut für Physikalische Chemie, Christian-Albrechts-Universität zu Kiel , Olshausenstraße 40 , D-24098 Kiel , Germany
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16
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17
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Aleotti F, Soprani L, Nenov A, Berardi R, Arcioni A, Zannoni C, Garavelli M. Multidimensional Potential Energy Surfaces Resolved at the RASPT2 Level for Accurate Photoinduced Isomerization Dynamics of Azobenzene. J Chem Theory Comput 2019; 15:6813-6823. [DOI: 10.1021/acs.jctc.9b00561] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Flavia Aleotti
- Dipartimento di Chimica Industriale “Toso Montanari”, Universitá di Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
| | - Lorenzo Soprani
- Dipartimento di Chimica Industriale “Toso Montanari”, Universitá di Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
| | - Artur Nenov
- Dipartimento di Chimica Industriale “Toso Montanari”, Universitá di Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
| | - Roberto Berardi
- Dipartimento di Chimica Industriale “Toso Montanari”, Universitá di Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
| | - Alberto Arcioni
- Dipartimento di Chimica Industriale “Toso Montanari”, Universitá di Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
| | - Claudio Zannoni
- Dipartimento di Chimica Industriale “Toso Montanari”, Universitá di Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
| | - Marco Garavelli
- Dipartimento di Chimica Industriale “Toso Montanari”, Universitá di Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
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18
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Accomasso D, Persico M, Granucci G. Diabatization by Localization in the Framework of Configuration Interaction Based on Floating Occupation Molecular Orbitals (FOMO−CI). CHEMPHOTOCHEM 2019. [DOI: 10.1002/cptc.201900056] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Davide Accomasso
- Dipartimento di Chimica e Chimica IndustrialeUniversitá di Pisa v. G. Moruzzi 13 I-56124 Pisa Italy
| | - Maurizio Persico
- Dipartimento di Chimica e Chimica IndustrialeUniversitá di Pisa v. G. Moruzzi 13 I-56124 Pisa Italy
| | - Giovanni Granucci
- Dipartimento di Chimica e Chimica IndustrialeUniversitá di Pisa v. G. Moruzzi 13 I-56124 Pisa Italy
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19
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Daniyan MO, Ojo OT. In silico identification and evaluation of potential interaction of Azadirachta indica phytochemicals with Plasmodium falciparum heat shock protein 90. J Mol Graph Model 2019; 87:144-164. [DOI: 10.1016/j.jmgm.2018.11.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 10/31/2018] [Accepted: 11/30/2018] [Indexed: 01/13/2023]
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20
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Wibowo M, Persico M, Granucci G. Nonadiabatic dynamics simulations of singlet fission in 2,5-bis(fluorene-9-ylidene)-2,5-dihydrothiophene crystals. Phys Chem Chem Phys 2019; 21:692-701. [PMID: 30543235 DOI: 10.1039/c8cp05474f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present simulations of the singlet fission dynamics in 2,5-bis(fluorene-9-ylidene)-2,5-dihydrothiophene (ThBF), a thienoquinoid compound recently investigated experimentally by Kawata et al. The simulation model consisted of two ThBF molecules embedded in their crystal environment. The aim was to understand the singlet fission mechanism, and to predict the excited state lifetimes and the singlet fission quantum yield, hitherto unknown. The simulations were performed by the trajectory surface hopping approach with on-the-fly calculations of the electronic wave functions and energies by the semiempirical FOMO-CI method. We found that the initially photogenerated excitonic bright state decays to the lower dark state with a biexponential behaviour, essentially due to transitions to other close lying states. The dark state in turn decays with a lifetime of about 1 ps to the double triplet 1TT state, which is long-lived, as ascertained by performing a simulation with inclusion of the spin-orbit coupling. The singlet fission quantum yield is predicted to be close to the theoretical maximum of 200%. In view of using this thienoquinoid compound in photovoltaic devices, a major drawback is the low energy of the T1 state at its equilibrium geometry.
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Affiliation(s)
- Meilani Wibowo
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, v. G. Moruzzi 13, I-56124 Pisa, Italy.
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21
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Fregoni J, Granucci G, Coccia E, Persico M, Corni S. Manipulating azobenzene photoisomerization through strong light-molecule coupling. Nat Commun 2018; 9:4688. [PMID: 30409994 PMCID: PMC6224570 DOI: 10.1038/s41467-018-06971-y] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2018] [Accepted: 10/04/2018] [Indexed: 11/09/2022] Open
Abstract
The formation of hybrid light–molecule states (polaritons) offers a new strategy to manipulate the photochemistry of molecules. To fully exploit its potential, one needs to build a toolbox of polaritonic phenomenologies that supplement those of standard photochemistry. By means of a state-of-the-art computational photochemistry approach extended to the strong-coupling regime, here we disclose various mechanisms peculiar of polaritonic chemistry: coherent population oscillations between polaritons, quenching by trapping in dead-end polaritonic states and the alteration of the photochemical reaction pathway and quantum yields. We focus on azobenzene photoisomerization, that encompasses the essential features of complex photochemical reactions such as the presence of conical intersections and reaction coordinates involving multiple internal modes. In the strong coupling regime, a polaritonic conical intersection arises and we characterize its role in the photochemical process. Our chemically detailed simulations provide a framework to rationalize how the strong coupling impacts the photochemistry of realistic molecules. Manipulation of the photochemistry of molecules is traditionally achieved through synthetic chemical modifications. Here the authors use computational photochemistry to show how to control azobenzene photoisomerization through hybrid light–molecule states (polaritons).
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Affiliation(s)
- J Fregoni
- Dipartimento di Scienze Fisiche, Informatiche e Matematiche, University of Modena and Reggio Emilia, I-41125, Modena, Italy.,Istituto Nanoscienze, Consiglio Nazionale delle Ricerche CNR-NANO, I-41125, Modena, Italy
| | - G Granucci
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, I-56124, Pisa, Italy.
| | - E Coccia
- Dipartimento di Scienze Chimiche, University of Padova, I-35131, Padova, Italy
| | - M Persico
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, I-56124, Pisa, Italy
| | - S Corni
- Istituto Nanoscienze, Consiglio Nazionale delle Ricerche CNR-NANO, I-41125, Modena, Italy. .,Dipartimento di Scienze Chimiche, University of Padova, I-35131, Padova, Italy.
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22
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Raeker T, Jansen B, Behrens D, Hartke B. Simulations of optically switchable molecular machines for particle transport. J Comput Chem 2018; 39:1433-1443. [PMID: 29573268 DOI: 10.1002/jcc.25212] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 02/27/2018] [Accepted: 02/27/2018] [Indexed: 12/22/2022]
Abstract
A promising application for design and deployment of molecular machines is nanoscale transport, driven by artificial cilia. In this contribution, we present several further steps toward this goal, beyond our first-generation artificial cilium (Raeker et al., J. Phys. Chem. A 2012, 116, 11241). Promising new azobenzene-derivatives were tested for use as cilium motors. Using a QM/MM partitioning in on-the-fly photodynamics, excited-state surface-hopping trajectories were calculated for each isomerization direction and each motor version. The methods used were reparametrized semiempirical quantum chemistry together with floating-occupation configuration interaction as the QM part and the OPLSAA-L forcefield as MM part. In addition, we simulated actual particle transport by a single cilium attached to a model surface, with varying attachment strengths and modes, and with transport targets ranging from single atoms to multi-molecule arrangements. Our results provide valuable design guidelines for cilia-driven nanoscale transport and emphasize the need to carefully select the whole setup (not just the cilium itself, but also its surface attachment and the dynamic cilium-target interaction) to achieve true transport. © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Tim Raeker
- Institut für Physikalische Chemie, Christian-Albrechts-Universität zu Kiel, Olshausenstraße 40, Kiel, D-24098, Germany
| | - Björn Jansen
- Institut für Pharmazeutische Chemie, Christian-Albrechts-Universität zu Kiel, Gutenbergstraße 76, Kiel, D-24118, Germany
| | - Dominik Behrens
- Institut für Physikalische Chemie, Christian-Albrechts-Universität zu Kiel, Olshausenstraße 40, Kiel, D-24098, Germany
| | - Bernd Hartke
- Institut für Physikalische Chemie, Christian-Albrechts-Universität zu Kiel, Olshausenstraße 40, Kiel, D-24098, Germany
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23
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Mondal P, Granucci G, Rastädter D, Persico M, Burghardt I. Azobenzene as a photoregulator covalently attached to RNA: a quantum mechanics/molecular mechanics-surface hopping dynamics study. Chem Sci 2018; 9:4671-4681. [PMID: 29899961 PMCID: PMC5969502 DOI: 10.1039/c8sc00072g] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Accepted: 04/25/2018] [Indexed: 12/21/2022] Open
Abstract
Azobenzene covalently attached to RNA undergoes trans-to-cis photo-switching on a time scale of ∼15 picoseconds – 30 times slower than in vacuo.
The photoregulation of nucleic acids by azobenzene photoswitches has recently attracted considerable interest in the context of emerging biotechnological applications. To understand the mechanism of photoinduced isomerisation and conformational control in these complex biological environments, we employ a Quantum Mechanics/Molecular Mechanics (QM/MM) approach in conjunction with nonadiabatic Surface Hopping (SH) dynamics. Two representative RNA–azobenzene complexes are investigated, both of which contain the azobenzene chromophore covalently attached to an RNA double strand via a β-deoxyribose linker. Due to the pronounced constraints of the local RNA environment, it is found that trans-to-cis isomerization is slowed down to a time scale of ∼10–15 picoseconds, in contrast to 500 femtoseconds in vacuo, with a quantum yield reduced by a factor of two. By contrast, cis-to-trans isomerization remains in a sub-picosecond regime. A volume-conserving isomerization mechanism is found, similarly to the pedal-like mechanism previously identified for azobenzene in solution phase. Strikingly, the chiral RNA environment induces opposite right-handed and left-handed helicities of the ground-state cis-azobenzene chromophore in the two RNA–azobenzene complexes, along with an almost completely chirality conserving photochemical pathway for these helical enantiomers.
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Affiliation(s)
- Padmabati Mondal
- Institute of Physical and Theoretical Chemistry , Goethe University Frankfurt , Max-von-Laue-Str. 7 , 60438 Frankfurt , Germany . ;
| | - Giovanni Granucci
- Dipartimento di Chimica e Chimica Industriale , Università di Pisa , v. Moruzzi 13 , I-56124 Pisa , Italy .
| | - Dominique Rastädter
- Institute of Physical and Theoretical Chemistry , Goethe University Frankfurt , Max-von-Laue-Str. 7 , 60438 Frankfurt , Germany . ;
| | - Maurizio Persico
- Dipartimento di Chimica e Chimica Industriale , Università di Pisa , v. Moruzzi 13 , I-56124 Pisa , Italy .
| | - Irene Burghardt
- Institute of Physical and Theoretical Chemistry , Goethe University Frankfurt , Max-von-Laue-Str. 7 , 60438 Frankfurt , Germany . ;
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24
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Cantatore V, Granucci G, Rousseau G, Padula G, Persico M. Photoisomerization of Self-Assembled Monolayers of Azobiphenyls: Simulations Highlight the Role of Packing and Defects. J Phys Chem Lett 2016; 7:4027-4031. [PMID: 27669082 DOI: 10.1021/acs.jpclett.6b02018] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We present surface hopping simulations of the photodynamics of self-assembled monolayers (SAMs) of 4'-(biphenyl-4-ylazo)-biphenyl-4-thiol (ABPT) on Au(111). We show that trans → cis photoisomerization is suppressed because of steric hindrance in a well-ordered SAM. Photoisomerization is instead viable in the presence of defects. Two particularly important defects are the boundaries between domains of trans-ABPT molecules leaning in different directions (a line defect) and single cis molecules embedded in a SAM of trans (a point defect). Our findings explain the cooperative behavior observed during the photoisomerization of a trans-ABPT SAM, leading to large domains of pure cis and trans isomers. The line and point defects are predicted to produce different patterns of cis-ABPT molecules during the early stages of the photoconversion.
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Affiliation(s)
- Valentina Cantatore
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa , v. G. Moruzzi 13, I-56124 Pisa, Italy
| | - Giovanni Granucci
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa , v. G. Moruzzi 13, I-56124 Pisa, Italy
| | - Guillaume Rousseau
- Magistère 2 de Physique Fondamentale, Université de Paris Sud 11 , Orsay 91400, France
| | - Giancarlo Padula
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa , v. G. Moruzzi 13, I-56124 Pisa, Italy
| | - Maurizio Persico
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa , v. G. Moruzzi 13, I-56124 Pisa, Italy
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25
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Titov E, Granucci G, Götze JP, Persico M, Saalfrank P. Dynamics of Azobenzene Dimer Photoisomerization: Electronic and Steric Effects. J Phys Chem Lett 2016; 7:3591-3596. [PMID: 27542538 DOI: 10.1021/acs.jpclett.6b01401] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
While azobenzenes readily photoswitch in solution, their photoisomerization in densely packed self-assembled monolayers (SAMs) can be suppressed. Reasons for this can be steric hindrance and/or electronic quenching, e.g., by exciton coupling. We address these possibilities by means of nonadiabatic molecular dynamics with trajectory surface hopping calculations, investigating the trans → cis isomerization of azobenzene after excitation into the ππ* absorption band. We consider a free monomer, an isolated dimer and a dimer embedded in a SAM-like environment of additional azobenzene molecules, imitating in this way the gradual transition from an unconstrained over an electronically coupled to an electronically coupled and sterically hindered, molecular switch. Our simulations reveal that in comparison to the single molecule the quantum yield of the trans → cis photoisomerization is similar for the isolated dimer, but greatly reduced in the sterically constrained situation. Other implications of dimerization and steric constraints are also discussed.
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Affiliation(s)
- Evgenii Titov
- Theoretical Chemistry, Institute of Chemistry, University of Potsdam , Karl-Liebknecht-Straße 24-25, 14476 Potsdam, Germany
| | - Giovanni Granucci
- Department of Chemistry and Industrial Chemistry, University of Pisa , via Moruzzi 13, 56124 Pisa, Italy
| | - Jan Philipp Götze
- Theoretical Chemistry, Institute of Chemistry, University of Potsdam , Karl-Liebknecht-Straße 24-25, 14476 Potsdam, Germany
| | - Maurizio Persico
- Department of Chemistry and Industrial Chemistry, University of Pisa , via Moruzzi 13, 56124 Pisa, Italy
| | - Peter Saalfrank
- Theoretical Chemistry, Institute of Chemistry, University of Potsdam , Karl-Liebknecht-Straße 24-25, 14476 Potsdam, Germany
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26
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Favero L, Granucci G, Persico M. Surface hopping investigation of benzophenone excited state dynamics. Phys Chem Chem Phys 2016; 18:10499-506. [DOI: 10.1039/c6cp00328a] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A mechanism of S1 decay in benzophenone: S1 → T1 is the main pathway, although transitions to T2 and higher triplets play a relevant role.
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Affiliation(s)
- Lucilla Favero
- Università di Pisa
- Dipartimento di Farmacia
- 56126 Pisa
- Italy
| | - Giovanni Granucci
- Università di Pisa
- Dipartimento di Chimica e Chimica Industriale
- 56124 Pisa
- Italy
| | - Maurizio Persico
- Università di Pisa
- Dipartimento di Chimica e Chimica Industriale
- 56124 Pisa
- Italy
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27
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Yin TT, Zhao ZX, Zhang HX. Theoretical study of the cis–trans isomerization mechanism of a pendant metal-bound azobenzene. RSC Adv 2016. [DOI: 10.1039/c6ra10880f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Theoretical study of the cis–trans isomerization mechanism of azobenzene substituents in rhenium complexes.
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Affiliation(s)
- Ting-Ting Yin
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry
- Institute of Theoretical Chemistry
- Jilin University
- 130023 Changchun
- China
| | - Zeng-Xia Zhao
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry
- Institute of Theoretical Chemistry
- Jilin University
- 130023 Changchun
- China
| | - Hong-Xing Zhang
- International Joint Research Laboratory of Nano-Micro Architecture Chemistry
- Institute of Theoretical Chemistry
- Jilin University
- 130023 Changchun
- China
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28
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Ultrafast excited-state dynamics associated with the photoisomerization of trans-4-diethylaminoazobenzene in solution. J Photochem Photobiol A Chem 2015. [DOI: 10.1016/j.jphotochem.2015.04.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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29
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Floß G, Saalfrank P. The Photoinduced E → Z Isomerization of Bisazobenzenes: A Surface Hopping Molecular Dynamics Study. J Phys Chem A 2015; 119:5026-37. [DOI: 10.1021/acs.jpca.5b02933] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Gereon Floß
- Institut
für Chemie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany
| | - Peter Saalfrank
- Institut
für Chemie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany
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30
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Abstract
We report theoretical investigations on azobenzene-based indandiazocines, novel chiral systems
that perform unidirectional cis↔trans isomerizations upon photo-excitation. For three different
systems of this kind, we have simulated excited-state surface-hopping trajectories for both
isomerization directions, using a configuration-interaction treatment based on system-specifically
reparametrized semiempirical AM1 theory. Our results are also compared to experimental and
theoretical results for the parent system diazocine. We show that, as intended by design, the
trans→cis bending of the azo unit in these indandiazocines can only happen in one of the two
possible directions due to sterical constraints, which is a new feature for photoswitches and a necessary prerequisite for directional action at the nanoscale.
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31
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Goyal P, Schwerdtfeger CA, Soudackov AV, Hammes-Schiffer S. Nonadiabatic Dynamics of Photoinduced Proton-Coupled Electron Transfer in a Solvated Phenol–Amine Complex. J Phys Chem B 2015; 119:2758-68. [DOI: 10.1021/jp5126969] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Puja Goyal
- Department of Chemistry, 600 South Mathews Avenue, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Christine A. Schwerdtfeger
- Department of Chemistry, 600 South Mathews Avenue, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Alexander V. Soudackov
- Department of Chemistry, 600 South Mathews Avenue, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Sharon Hammes-Schiffer
- Department of Chemistry, 600 South Mathews Avenue, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
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32
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Cantatore V, Granucci G, Persico M. The photo-orientation of azobenzene in viscous solutions, simulated by a stochastic model. Phys Chem Chem Phys 2014; 16:25081-92. [PMID: 25331274 DOI: 10.1039/c4cp03472d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
We report a computational study of the photo-orientation kinetics in a viscous solution of azobenzene in ethylene glycol, under irradiation with linearly polarized light. The development of anisotropy and its interplay with photoisomerization are simulated by a stochastic model. A distinctive feature of the model is that it takes into account the photo-orientation angular distributions, specific for each isomer, obtained by nonadiabatic dynamics simulations at the molecular level. We find that the anisotropy, as measured by optical absorption dichroism, does not necessarily increase monotonously with time. As expected, the photo-orientation turns out to be strongly coupled with photoisomerization, but the latter is not a mandatory ingredient of this phenomenon: we predict that any chromophore undergoing large amplitude geometry relaxation during its excited state dynamics can develop anisotropy under suitable conditions.
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Affiliation(s)
- Valentina Cantatore
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, v. G. Moruzzi, I-56124 Pisa, Italy.
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33
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Corchado JC, Sánchez ML, Fdez. Galván I, Martín ME, Muñoz-Losa A, Barata-Morgado R, Aguilar MA. Theoretical Study of Solvent Effects on the Ground and Low-Lying Excited Free Energy Surfaces of a Push–Pull Substituted Azobenzene. J Phys Chem B 2014; 118:12518-30. [DOI: 10.1021/jp506876v] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Jose C. Corchado
- Área
de Química Física, Universidad de Extremadura, Avda
de Elvas s/n, 06071 Badajoz, Spain
| | - M. Luz Sánchez
- Área
de Química Física, Universidad de Extremadura, Avda
de Elvas s/n, 06071 Badajoz, Spain
| | - Ignacio Fdez. Galván
- Department
of Chemistry—Ångström, The Theoretical Chemistry
Programme, Uppsala University, P.O. Box 518, SE-751 20 Uppsala, Sweden
| | - M. Elena Martín
- Área
de Química Física, Universidad de Extremadura, Avda
de Elvas s/n, 06071 Badajoz, Spain
| | - Aurora Muñoz-Losa
- Área
de Química Física, Universidad de Extremadura, Avda
de Elvas s/n, 06071 Badajoz, Spain
| | - Rute Barata-Morgado
- Área
de Química Física, Universidad de Extremadura, Avda
de Elvas s/n, 06071 Badajoz, Spain
| | - Manuel A. Aguilar
- Área
de Química Física, Universidad de Extremadura, Avda
de Elvas s/n, 06071 Badajoz, Spain
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34
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An overview of nonadiabatic dynamics simulations methods, with focus on the direct approach versus the fitting of potential energy surfaces. Theor Chem Acc 2014. [DOI: 10.1007/s00214-014-1526-1] [Citation(s) in RCA: 102] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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35
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36
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Tian Z, Wen J, Ma J. Dynamic simulations of stimuli-responsive switching of azobenzene derivatives in self-assembled monolayers: reactive rotation potential and switching functions. MOLECULAR SIMULATION 2014. [DOI: 10.1080/08927022.2014.918974] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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37
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Duarte L, Fausto R, Reva I. Structural and spectroscopic characterization of E- and Z-isomers of azobenzene. Phys Chem Chem Phys 2014; 16:16919-30. [DOI: 10.1039/c4cp00240g] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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38
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Gao AH, Li B, Zhang PY, Liu J. Photochemical dynamics simulations for trans–cis photoisomerizations of azobenzene and bridged azobenzene. COMPUT THEOR CHEM 2014. [DOI: 10.1016/j.comptc.2013.12.029] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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39
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Martínez-Fernández L, Corral I, Granucci G, Persico M. Competing ultrafast intersystem crossing and internal conversion: a time resolved picture for the deactivation of 6-thioguanine. Chem Sci 2014. [DOI: 10.1039/c3sc52856a] [Citation(s) in RCA: 114] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
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40
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Excited States Behavior of Nucleobases in Solution: Insights from Computational Studies. Top Curr Chem (Cham) 2014; 355:329-57. [DOI: 10.1007/128_2013_524] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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41
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Li Y, Hartke B. Approximate photochemical dynamics of azobenzene with reactive force fields. J Chem Phys 2013; 139:224303. [DOI: 10.1063/1.4837237] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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42
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Bogdanov AV, Vorobiev AK. ESR and Optical Study of Photo-Orientation in Azobenzene-Containing Liquid-Crystalline Polymer. J Phys Chem B 2013; 117:12328-38. [DOI: 10.1021/jp4080493] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alexey V. Bogdanov
- Department
of Chemistry, Moscow State University, 119991, Moscow, Russia
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Böckmann M, Braun S, Doltsinis NL, Marx D. Mimicking photoisomerisation of azo-materials by a force field switch derived from nonadiabatic ab initio simulations: Application to photoswitchable helical foldamers in solution. J Chem Phys 2013; 139:084108. [DOI: 10.1063/1.4818489] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Cao J, Liu LH, Fang WH, Xie ZZ, Zhang Y. Photo-induced isomerization of ethylene-bridged azobenzene explored by ab initio based non-adiabatic dynamics simulation: A comparative investigation of the isomerization in the gas and solution phases. J Chem Phys 2013; 138:134306. [DOI: 10.1063/1.4798642] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Harabuchi Y, Ishii M, Nakayama A, Noro T, Taketsugu T. A multireference perturbation study of the NN stretching frequency of trans-azobenzene in nπ* excitation and an implication for the photoisomerization mechanism. J Chem Phys 2013; 138:064305. [DOI: 10.1063/1.4790611] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Carstensen NO. QM/MM surface-hopping dynamics of a bridged azobenzene derivative. Phys Chem Chem Phys 2013; 15:15017-26. [DOI: 10.1039/c3cp50606a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Favero L, Granucci G, Persico M. Dynamics of acetone photodissociation: a surface hopping study. Phys Chem Chem Phys 2013; 15:20651-61. [DOI: 10.1039/c3cp54016b] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Álvarez-Barcia S, Flores JR, Granucci G, Persico M. Theoretical Study of the Chemiluminescence of the Al + H2O Reaction. J Phys Chem A 2012; 117:67-74. [DOI: 10.1021/jp310034c] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sonia Álvarez-Barcia
- Departamento de Química
Física, Facultade de Química, Universidade de Vigo,
E-36310- Vigo, Spain
- Dipartimento
di Chimica e Chimica
Industriale, Università di Pisa, I-56126 Pisa, Italy
| | - Jesús R. Flores
- Departamento de Química
Física, Facultade de Química, Universidade de Vigo,
E-36310- Vigo, Spain
| | - Giovanni Granucci
- Dipartimento
di Chimica e Chimica
Industriale, Università di Pisa, I-56126 Pisa, Italy
| | - Maurizio Persico
- Dipartimento
di Chimica e Chimica
Industriale, Università di Pisa, I-56126 Pisa, Italy
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Floß G, Granucci G, Saalfrank P. Surface hopping dynamics of direct trans → cis photoswitching of an azobenzene derivative in constrained adsorbate geometries. J Chem Phys 2012; 137:234701. [DOI: 10.1063/1.4769087] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Granucci G, Persico M, Spighi G. Surface hopping trajectory simulations with spin-orbit and dynamical couplings. J Chem Phys 2012; 137:22A501. [DOI: 10.1063/1.4707737] [Citation(s) in RCA: 105] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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