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Belles E, Rabilloud F, Kuleff AI, Despré V. Size Effect in Correlation-Driven Charge Migration in Correlation Bands of Alkyne Chains. J Phys Chem A 2024; 128:163-169. [PMID: 38150589 DOI: 10.1021/acs.jpca.3c06776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
Correlation-driven charge migration initiated by inner-valence ionization leading to the population of the correlation bands of alkyne chains containing between 4 and 12 carbon atoms is explored through ab initio simulations. Scaling laws are observed, both for the time scale of the charge migration and for the slope of the density of states of the correlation bands. These can be used for predicting the relaxation time scale in much larger systems from the same molecular family and for finding promising candidates for the development of an attochemistry scheme taking advantages of the specificity of the dynamics in the correlation bands of molecules.
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Affiliation(s)
- Enguerran Belles
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, UMR5306, Villeurbanne F-69622, France
| | - Franck Rabilloud
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, UMR5306, Villeurbanne F-69622, France
| | - Alexander I Kuleff
- Theoretische Chemie, PCI, Universität Heidelberg, Im Neuenheimer Feld 229, Heidelberg D-69120, Germany
| | - Victor Despré
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, UMR5306, Villeurbanne F-69622, France
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2
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Vester J, Despré V, Kuleff AI. The role of symmetric vibrational modes in the decoherence of correlation-driven charge migration. J Chem Phys 2023; 158:104305. [PMID: 36922132 DOI: 10.1063/5.0136681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023] Open
Abstract
Due to the electron correlation, the fast removal of an electron from a molecule may create a coherent superposition of cationic states and in this way initiate pure electronic dynamics in which the hole-charge left by the ionization migrates throughout the system on an ultrashort time scale. The coupling to the nuclear motion introduces a decoherence that eventually traps the charge, and crucial questions in the field of attochemistry include how long the electronic coherence lasts and which nuclear degrees of freedom are mostly responsible for the decoherence. Here, we report full-dimensional quantum calculations of the concerted electron-nuclear dynamics following outer-valence ionization of propynamide, which reveal that the pure electronic coherences last only 2-3 fs before being destroyed by the nuclear motion. Our analysis shows that the normal modes that are mostly responsible for the fast electronic decoherence are the symmetric in-plane modes. All other modes have little or no effect on the charge migration. This information can be useful to guide the development of reduced dimensionality models for larger systems or the search for molecules with long coherence times.
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Affiliation(s)
- J Vester
- Theoretische Chemie, PCI, Universität Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg, Germany
| | - V Despré
- Theoretische Chemie, PCI, Universität Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg, Germany
| | - A I Kuleff
- Theoretische Chemie, PCI, Universität Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg, Germany
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Chordiya K, Despré V, Nagyillés B, Zeller F, Diveki Z, Kuleff AI, Kahaly MU. Photo-ionization initiated differential ultrafast charge migration: impacts of molecular symmetries and tautomeric forms. Phys Chem Chem Phys 2023; 25:4472-4480. [PMID: 36317562 DOI: 10.1039/d2cp02681c] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Photo-ionization induced ultrafast electron dynamics is considered as a precursor for the slower nuclear dynamics associated with molecular dissociation. Here, using the ab initio multielectron wave-packet propagation method, we study the overall many-electron dynamics, triggered by ionizing the outer-valence orbitals of different tautomers for a prototype molecule with more than one symmetry element. From the time evolution of the initially created averaged hole density of each system, we identify distinctly different charge dynamics responses in the tautomers. We observe that the keto form shows a charge migration direction away from the nitrogen bonded with hydrogen, while in enol-U - away from oxygen bonded to hydrogen. Additionally, the dynamics following the ionization of molecular orbitals with different symmetries reveals that a' orbitals show a fast and highly delocalized charge density in comparison to a'' symmetry. These observations indicate why different tautomers respond differently to an XUV ionization, and might explain the subsequent different fragmentation pathways. An experimental schematics allowing the detection and reconstruction of such charge dynamics is also proposed. Although the present study uses a simple, prototypical bio-relevant molecule, it reveals the explicit role of molecular symmetry and tautomerism in the ionization-triggered charge migration that controls many ultrafast physical, chemical, and biological processes, making tautomeric forms a promising tool of molecular design for desired charge migration.
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Affiliation(s)
- Kalyani Chordiya
- ELI-ALPS, ELI-HU Non-Profit Ltd., Wolfgang Sandner utca 3., Szeged, H-6728, Hungary. .,Institute of Physics, University of Szeged, Dóm tér 9, H-6720, Szeged, Hungary
| | - Victor Despré
- Theoretische Chemie, Universität Heidelberg, Im Neuenheimer Feld 229, D-69120, Heidelberg, Germany.
| | - Balázs Nagyillés
- ELI-ALPS, ELI-HU Non-Profit Ltd., Wolfgang Sandner utca 3., Szeged, H-6728, Hungary. .,Institute of Physics, University of Szeged, Dóm tér 9, H-6720, Szeged, Hungary
| | - Felix Zeller
- Theoretische Chemie, Universität Heidelberg, Im Neuenheimer Feld 229, D-69120, Heidelberg, Germany.
| | - Zsolt Diveki
- ELI-ALPS, ELI-HU Non-Profit Ltd., Wolfgang Sandner utca 3., Szeged, H-6728, Hungary.
| | - Alexander I Kuleff
- ELI-ALPS, ELI-HU Non-Profit Ltd., Wolfgang Sandner utca 3., Szeged, H-6728, Hungary. .,Theoretische Chemie, Universität Heidelberg, Im Neuenheimer Feld 229, D-69120, Heidelberg, Germany.
| | - Mousumi Upadhyay Kahaly
- ELI-ALPS, ELI-HU Non-Profit Ltd., Wolfgang Sandner utca 3., Szeged, H-6728, Hungary. .,Institute of Physics, University of Szeged, Dóm tér 9, H-6720, Szeged, Hungary
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Khalili F, Vafaee M, Shokri B. Attosecond charge migration following oxygen K-shell ionization in DNA bases and base pairs. Phys Chem Chem Phys 2021; 23:23005-23013. [PMID: 34611693 DOI: 10.1039/d1cp02920g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Core ionization of DNA begins a cascade of events which could lead to cellular inactivation or death. The created core-hole following an impulse inner-shell ionization of molecules naturally decays in the auger timescale. We simulated charge migration (CM) phenomena following an impulsive core ionization of individual DNA bases at the oxygen K-edge which occurs before Auger decay of the oxygen. Our approach is based on real-time time dependent density functional theory (RT-TDDFT). It is shown that the pronounced hole fluctuation observed around bonds of the initial core-hole results in various valence orbital migrations. Also, the same photo-core-ionized dynamics is studied for the related base pairs. We investigate the role of base pairing and H-bonding interactions in the attosecond CM dynamics. In particular, the creation of a core-hole in the oxygen involved in H-bonding leads to an enhancement of charge migration relative to the respective single bases. Importantly, the hole oscillation of the adenine-thymine base pair upon creation of a core-hole at the oxygen, which does not contribute to the donor-acceptor interactions (not H-bonded), decreases compared to the single thymine base. Understanding the detailed dynamics of the localized core-hole initiating CM process would open the way for chemically controlling DNA damage/repair in the future.
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Affiliation(s)
- Fatemeh Khalili
- Department of Physics, Shahid Beheshti University, Velenjak, Tehran 19839, Iran.
| | - Mohsen Vafaee
- Department of Chemistry, Tarbiat Modares University, P. O. Box 14115-175, Tehran, Iran.
| | - Babak Shokri
- Department of Physics, Shahid Beheshti University, Velenjak, Tehran 19839, Iran. .,Laser-Plasma Research Institute, Shahid Beheshti University, Velenjak, Tehran 19839, Iran
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Folorunso AS, Bruner A, Mauger F, Hamer KA, Hernandez S, Jones RR, DiMauro LF, Gaarde MB, Schafer KJ, Lopata K. Molecular Modes of Attosecond Charge Migration. PHYSICAL REVIEW LETTERS 2021; 126:133002. [PMID: 33861123 DOI: 10.1103/physrevlett.126.133002] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 02/24/2021] [Indexed: 06/12/2023]
Abstract
First-principles calculations are employed to elucidate the modes of attosecond charge migration (CM) in halogenated hydrocarbon chains. We use constrained density functional theory (DFT) to emulate the creation of a localized hole on the halogen and follow the subsequent dynamics via time-dependent DFT. We find low-frequency CM modes (∼1 eV) that propagate across the molecule and study their dependence on length, bond order, and halogenation. We observe that the CM speed (∼4 Å/fs) is largely independent of molecule length, but is lower for triple-bonded versus double-bonded molecules. Additionally, as the halogen mass increases, the hole travels in a more particlelike manner as it moves across the molecule. These heuristics will be useful in identifying molecules and optimal CM detection methods for future experiments, especially for halogenated hydrocarbons which are promising targets for ionization-triggered CM.
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Affiliation(s)
- Aderonke S Folorunso
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA
| | - Adam Bruner
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA
| | - François Mauger
- Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA
| | - Kyle A Hamer
- Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA
| | - Samuel Hernandez
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA
| | - Robert R Jones
- Department of Physics, University of Virginia, Charlottesville, Virginia 22904, USA
| | - Louis F DiMauro
- Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA
| | - Mette B Gaarde
- Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA
| | - Kenneth J Schafer
- Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA
| | - Kenneth Lopata
- Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA
- Center for Computation and Technology, Louisiana State University, Baton Rouge, Louisiana 70803, USA
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