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Chevalier F, Schlathölter T, Poully JC. Radiation-Induced Transfer of Charge, Atoms, and Energy within Isolated Biomolecular Systems. Chembiochem 2023; 24:e202300543. [PMID: 37712497 DOI: 10.1002/cbic.202300543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 09/12/2023] [Accepted: 09/14/2023] [Indexed: 09/16/2023]
Abstract
In biological tissues, ionizing radiation interacts with a variety of molecules and the consequences include cell killing and the modification of mechanical properties. Applications of biological radiation action are for instance radiotherapy, sterilization, or the tailoring of biomaterial properties. During the first femtoseconds to milliseconds after the initial radiation action, biomolecular systems typically respond by transfer of charge, atoms, or energy. In the condensed phase, it is usually very difficult to distinguish direct effects from indirect effects. A straightforward solution for this problem is the use of gas-phase techniques, for instance from the field of mass spectrometry. In this review, we survey mainly experimental but also theoretical work, focusing on radiation-induced intra- and inter-molecular transfer of charge, atoms, and energy within biomolecular systems in the gas phase. Building blocks of DNA, proteins, and saccharides, but also antibiotics are considered. The emergence of general processes as well as their timescales and mechanisms are highlighted.
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Affiliation(s)
- François Chevalier
- CIMAP UMR 6252, CEA/CNRS/ENSICAEN/Université de Caen Normandie, Bd Becquerel, 14070, Caen, France
| | - Thomas Schlathölter
- Zernike Institute for Advanced Materials, University of Groningen, Groningen (The, Netherlands
- University College Groningen, University of Groningen, Groningen (The, Netherlands
| | - Jean-Christophe Poully
- CIMAP UMR 6252, CEA/CNRS/ENSICAEN/Université de Caen Normandie, Bd Becquerel, 14070, Caen, France
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2
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Jia D, Yang Y. Systematic Investigation of the Reliability of the Frozen Nuclei Approximation for Short-Pulse Excitation: The Example of HCCI+. Front Chem 2022; 10:857348. [PMID: 35372267 PMCID: PMC8966390 DOI: 10.3389/fchem.2022.857348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 02/07/2022] [Indexed: 11/13/2022] Open
Abstract
In this work we quantitatively study the reliability of the frozen nuclei approximation for ultrafast dynamics. Specifically we study laser excitation of HCCI+ from its ground state to the first electronically excited state. The population of the first excited state is obtained by both the frozen nuclei approximation and by multidimensional nuclear dynamics. Detailed comparison of the results by the two methods are performed to provide quantitative criteria for the reliability of the frozen nuclei approximation for this system.
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Affiliation(s)
- Dongming Jia
- MOE Key Laboratory for Non-equilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi’an Jiaotong University, Xi’an, China
| | - Yonggang Yang
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan, China
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, China
- *Correspondence: Yonggang Yang,
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3
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Pohl V, Hermann G, Tremblay JC. An open-source framework for analyzing N
-electron dynamics. I. Multideterminantal wave functions. J Comput Chem 2017; 38:1515-1527. [DOI: 10.1002/jcc.24792] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 02/27/2017] [Accepted: 02/28/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Vincent Pohl
- Institut für Chemie und Biochemie, Freie Universität Berlin; Takustraße 3 Berlin 14195 Germany
| | - Gunter Hermann
- Institut für Chemie und Biochemie, Freie Universität Berlin; Takustraße 3 Berlin 14195 Germany
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4
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Ding H, Jia D, Manz J, Yang Y. Reconstruction of the electronic flux during adiabatic attosecond charge migration in HCCI+. Mol Phys 2017. [DOI: 10.1080/00268976.2017.1287967] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Hao Ding
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy Laboratory, Shanxi University , Taiyuan, China
| | - Dongming Jia
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy Laboratory, Shanxi University , Taiyuan, China
| | - Jörn Manz
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy Laboratory, Shanxi University , Taiyuan, China
- Institut für Chemie und Biochemie, Freie Universität Berlin , 14195 Berlin, Germany
- Collaborative Innovation Center of Extreme Optics, Shanxi University , Taiyuan, China
| | - Yonggang Yang
- State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy Laboratory, Shanxi University , Taiyuan, China
- Collaborative Innovation Center of Extreme Optics, Shanxi University , Taiyuan, China
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5
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Jia D, Manz J, Paulus B, Pohl V, Tremblay JC, Yang Y. Quantum control of electronic fluxes during adiabatic attosecond charge migration in degenerate superposition states of benzene. Chem Phys 2017. [DOI: 10.1016/j.chemphys.2016.09.021] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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6
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Ramasesha K, Leone SR, Neumark DM. Real-Time Probing of Electron Dynamics Using Attosecond Time-Resolved Spectroscopy. Annu Rev Phys Chem 2016; 67:41-63. [DOI: 10.1146/annurev-physchem-040215-112025] [Citation(s) in RCA: 136] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Krupa Ramasesha
- Department of Chemistry, University of California, Berkeley, California 94720;
- Combustion Research Facility, Sandia National Laboratories, Livermore, California 94550
| | - Stephen R. Leone
- Department of Chemistry, University of California, Berkeley, California 94720;
- Department of Physics, University of California, Berkeley, California 94720
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720
| | - Daniel M. Neumark
- Department of Chemistry, University of California, Berkeley, California 94720;
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720
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7
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Klinkusch S, Tremblay JC. Resolution-of-identity stochastic time-dependent configuration interaction for dissipative electron dynamics in strong fields. J Chem Phys 2016; 144:184108. [DOI: 10.1063/1.4948646] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Stefan Klinkusch
- Institute for Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, D-14195 Berlin, Germany
| | - Jean Christophe Tremblay
- Institute for Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, D-14195 Berlin, Germany
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8
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Unitary group approach to the many-electron correlation problem: spin-dependent operators. Theor Chem Acc 2014. [DOI: 10.1007/s00214-014-1467-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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9
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Kuś T, Mignolet B, Levine RD, Remacle F. Pump and Probe of Ultrafast Charge Reorganization in Small Peptides: A Computational Study through Sudden Ionizations. J Phys Chem A 2013; 117:10513-25. [DOI: 10.1021/jp407295t] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- T. Kuś
- Department
of Chemistry, B6c, University of Liege, B4000 Liege, Belgium
| | - B. Mignolet
- Department
of Chemistry, B6c, University of Liege, B4000 Liege, Belgium
| | - R. D. Levine
- Fritz Haber Research
Centre for Molecular Dynamics, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel
| | - F. Remacle
- Department
of Chemistry, B6c, University of Liege, B4000 Liege, Belgium
- Fritz Haber Research
Centre for Molecular Dynamics, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel
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10
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Sonk JA, Schlegel HB. TD-CI Simulation of the Electronic Optical Response of Molecules in Intense Fields II: Comparison of DFT Functionals and EOM-CCSD. J Phys Chem A 2011; 115:11832-40. [DOI: 10.1021/jp206437s] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jason A. Sonk
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - H. Bernhard Schlegel
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
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11
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Sonk JA, Caricato M, Schlegel HB. TD-CI Simulation of the Electronic Optical Response of Molecules in Intense Fields: Comparison of RPA, CIS, CIS(D), and EOM-CCSD. J Phys Chem A 2011; 115:4678-90. [DOI: 10.1021/jp107384p] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jason A. Sonk
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - Marco Caricato
- Gaussian, Inc., 340 Quinnipiac Street, Building 40, Wallingford, Connecticut 06492, United States
| | - H. Bernhard Schlegel
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
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12
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Huber C, Klamroth T. Explicitly time-dependent coupled cluster singles doubles calculations of laser-driven many-electron dynamics. J Chem Phys 2011; 134:054113. [DOI: 10.1063/1.3530807] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
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13
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Tremblay JC, Klinkusch S, Klamroth T, Saalfrank P. Dissipative many-electron dynamics of ionizing systems. J Chem Phys 2011; 134:044311. [DOI: 10.1063/1.3532410] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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14
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Periyasamy G, Levine R, Remacle F. Electronic wave packet motion in water dimer cation: A many electron description. Chem Phys 2009. [DOI: 10.1016/j.chemphys.2009.08.004] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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15
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Abstract
A pump–probe experiment that can examine a pure charge migration on a time scale short compared to the onset of nuclear motion is discussed. The mass spectrometric studies of Schlag et al. suggest that short peptide terminated by an aromatic amino acid are particularly suitable test compounds. The pump pulse needs to ionize the molecule on a time scale short compared to the period of the electronic motion, typically sub-fs. However, ionization occurs preferentially when the electrical field of the light is maximal so that the duration of the pulse envelope can be somewhat longer. Detection by photoelectron spectrometry of the peptide cation, to produce a dication, is shown to be able to probe the electronic rearrangement.
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16
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Kuleff AI, Dreuw A. Theoretical description of charge migration with a single Slater-determinant and beyond. J Chem Phys 2009; 130:034102. [PMID: 19173505 DOI: 10.1063/1.3058899] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Triggered by the interest to study charge migration in large molecular systems, a simple methodology has recently been proposed based on straightforward density functional theory calculations. This approach describes the time evolution of the initially created hole density in terms of the time evolution of the ionized highest occupied molecular orbital (HOMO). Here we demonstrate that this time-dependent analog of Koopmans' theorem is not valid, and instead of the time evolution of the HOMO, the time evolution of the orbitals that remain occupied in the cation determines the evolution of the initially created hole in the framework of time-dependent single-determinant theories. Numerical examples underline that for a proper description of charge migration processes, an explicit treatment of the electron correlation is indispensable. Moreover, they also demonstrate that the attempts to describe charge migration based on Kohn-Sham density functional theory using conventional exchange-correlation functionals are doomed to fail due to the well-known self-interaction error.
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Affiliation(s)
- Alexander I Kuleff
- Institute of Physical Chemistry, Ruprecht Karls-University Heidelberg, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany.
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17
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Klamroth T, Nest M. Ultrafast electronic excitations of small sodium clusters and the onset of electron thermalization. Phys Chem Chem Phys 2009; 11:349-57. [DOI: 10.1039/b813619j] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Krause P, Klamroth T. Dipole switching in large molecules described by explicitly time-dependent configuration interaction. J Chem Phys 2008; 128:234307. [DOI: 10.1063/1.2939241] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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19
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Autobiographical Sketch. Mol Phys 2008. [DOI: 10.1080/00268970701794332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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20
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21
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Klein M, Rogge S, Remacle F, Levine RD. Transcending binary logic by gating three coupled quantum dots. NANO LETTERS 2007; 7:2795-9. [PMID: 17711336 DOI: 10.1021/nl071376e] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Physical considerations supported by numerical solution of the quantum dynamics including electron repulsion show that three weakly coupled quantum dots can robustly execute a complete set of logic gates for computing using three valued inputs and outputs. Input is coded as gating (up, unchanged, or down) of the terminal dots. A nanosecond time scale switching of the gate voltage requires careful numerical propagation of the dynamics. Readout is the charge (0, 1, or 2 electrons) on the central dot.
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Affiliation(s)
- Michael Klein
- The Fritz Haber Research Center for Molecular Dynamics, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
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22
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23
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Krause P, Klamroth T, Saalfrank P. Molecular response properties from explicitly time-dependent configuration interaction methods. J Chem Phys 2007; 127:034107. [PMID: 17655431 DOI: 10.1063/1.2749503] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
In this paper we report the calculation of molecular electric response properties with the help of explicitly time-dependent configuration interaction (TD-CI) methods. These methods have the advantage of being applicable (within the limitations of the time-dependent Schrodinger equation) to time-dependent perturbations of arbitrary shape and strength. Three variants are used to solve the time-dependent electronic Schrodinger equation, namely, the TD-CIS (inclusion of single excitations only), TD-CISD (inclusion of single and double excitations), and TD-CIS(D) (single excitations and perturbative treatment of double excitations) methods and applied for illustration to small molecules, H(2) and H(2)O. In the calculation, slowly varying off-resonant electric fields are applied to the molecules and linear (polarizabilities) and nonlinear (hyperpolarizabilities, harmonic generation) response properties are determined from the time-dependent dipole moments.
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Affiliation(s)
- Pascal Krause
- Theoretische Chemie, Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam, Germany
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24
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Remacle F, Levine RD. The time scale for electronic reorganization upon sudden ionization of the water and water-methanol hydrogen bonded dimers and of the weakly bound NO dimer. J Chem Phys 2006; 125:133321. [PMID: 17029474 DOI: 10.1063/1.2227023] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
When the valence molecular orbital is localized sudden ionization can cause the nascent hole to move rapidly even before any relaxation of the geometry occurs. Hydrogen bonded clusters offer suitable test systems where the hole is initially localized on one moiety. Computational studies are reported for the water dimer and water-methanol bimer. The local ionization potential of water is different in the methanol-water and water-methanol conformers and this difference is very clearly reflected in the dynamics of charge migration. For the NO dimer the results are that its structure is symmetric so that the two NO molecules are equivalent and do not exhibit the required localization. The role of symmetry is also evident in the charge propagation for holes created in different orbitals. Localization of the initial hole distribution even if absent in the bare molecule can still be induced by the intense electric field of a sudden photoionization. This effect is computationally studied for the NO dimer in the presence of a static electric field.
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Affiliation(s)
- F Remacle
- The Fritz Haber Research Center for Molecular Dynamics, The Hebrew University of Jerusalem, Jerusalem 91904, Israel and Département de Chimie, B6c, Université de Liège, B4000 Liège, Belgium
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25
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Abstract
Ultrafast, subfemtosecond charge migration in small peptides is discussed on the basis of computational studies and compared with the selective bond dissociation after ionization as observed by Schlag and Weinkauf. The reported relaxation could be probed in real time if the removal of an electron could be achieved on the attosecond time scale. Then the mean field seen by an electron would be changing rapidly enough to initiate the migration. Tyrosine-terminated tetrapeptides have a particularly fast charge migration where in <1 fs the charge arrives at the other end. A femtosecond pulse can be used to observe the somewhat slower relaxation induced by correlation between electrons of different spins. A slower relaxation also is indicated when removing a deeper-lying valence electron. When a chromophoric amino acid is at one end of the peptide, the charge can migrate all along the peptide backbone up to the N end, but site-selective ionization is probably easier to detect for tryptophan than for tyrosine.
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Affiliation(s)
- F. Remacle
- *The Fritz Haber Research Center for Molecular Dynamics, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
- Département de Chimie, B6c, Université de Liège, B4000 Liège, Belgium; and
| | - R. D. Levine
- *The Fritz Haber Research Center for Molecular Dynamics, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095-1569
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26
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Schlag EW, Selzle HL, Schanen P, Weinkauf R, Levine RD. Dissociation Kinetics of Peptide Ions. J Phys Chem A 2006; 110:8497-500. [PMID: 16821833 DOI: 10.1021/jp055764l] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The dissociation of peptide ions has been found to have ultrafast components that in many ways are uniquely different from typical unimolecular kinetics. As such, some peptide reactions provide new channels, which do not conform to statistical models of reaction kinetics. When the dissociation rates are in the 100 fs range, they are in a time scale where statistical methods do not yet apply, although molecules that have not yet dissociated will later in time undergo statistical redistribution of their excess energy, which, however, may not lead to noticeable reactivity within the experimental time frames for large peptides and hence are simply dissipative. This work is meant to reconcile the long time statistical results of Lifshitz et al. (2003) with the work of Schlag et al. (1995/6) that suggests an alternate parallel and much faster time scale for dissociation. It is argued that the two sets of results and interpretations augment one another and in fact open up a most interesting new field of peptide kinetics in addition to the unimolecular behavior, which becomes de facto arrested by the shear size of the molecule being unable to find a transition state on any reasonable time scale.
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Affiliation(s)
- E W Schlag
- Institut für Physikalische Chemie, TUM München, D-85747 Garching, Germany
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27
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Ohtsuki Y, Sugawara M, Kono H, Fujimura Y. Quantum Control of Molecular Reaction Dynamics by Laser Pulses: Development of Theory and Its Application. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2001. [DOI: 10.1246/bcsj.74.1167] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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28
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Remacle F, Levine RD. Superexchange, Localized, and Domain-Localized Charge States for Intramolecular Electron Transfer in Large Molecules and in Arrays of Quantum Dots. J Phys Chem B 2001. [DOI: 10.1021/jp002972z] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- F. Remacle
- Département de Chimie, B6, Université de Liège, B 4000 Liège, Belgium
| | - R. D. Levine
- The Fritz Haber Research Center for Molecular Dynamics, The Hebrew University, Jerusalem 91904, Israel, and Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095
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29
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30
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Remacle F, Levine RD. Quantum Dots as Chemical Building Blocks: Elementary Theoretical Considerations. Chemphyschem 2001; 2:20-36. [DOI: 10.1002/1439-7641(20010119)2:1<20::aid-cphc20>3.0.co;2-r] [Citation(s) in RCA: 111] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2000] [Indexed: 11/05/2022]
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31
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Desfrançois C, Carles S, Schermann JP. Weakly bound clusters of biological interest. Chem Rev 2000; 100:3943-62. [PMID: 11749335 DOI: 10.1021/cr990061j] [Citation(s) in RCA: 202] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- C Desfrançois
- Laboratoire de Physique des Lasers, Université Paris Nord, Villetaneuse, 93430, France
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32
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Van Hooydonk G. Gauge symmetry, chirality and parity effects in four-particle systems: Coulomb's law as a universal function for diatomic molecules. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2000; 56A:2273-2331. [PMID: 11075672 DOI: 10.1016/s1386-1425(00)00298-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Following recent work in search for a universal function (Van Hooydonk, Eur. J. Inorg. Chem., (1999), 1617), we test four symmetric +/- a(n)Rn potentials for reproducing molecular potential energy curves (PECs). Classical gauge symmetry for 1/R-potentials results in generic left right asymmetric PECs. A pair of symmetric perturbed Coulomb potentials is quantitatively in accordance with observed PECs. For a bond, a four-particle system, charge inversion (a parity effect, atom chirality) is the key to explain this shape generically. A parity adapted Hamiltonian reduces from ten to two terms and to a soluble Bohr-like formula, a Kratzer (1 - Re/R)2 potential. The result is similar to the combined action of spin and wave function symmetry upon the Hamiltonian in Heitler-London theory. Analytical perturbed Coulomb functions varying with (1 - Re/R) scale attractive and repulsive branches of PECs for 13 bonds H2, HF, LiH, KH, AuH, Li2, LiF, KLi, NaCs, Rb2, RbCs, Cs2 and I2 in a single straight line. The 400 turning points for 13 bonds are reproduced with a deviation of 0.007 A at both branches. For 230 points at the repulsive side, the deviation is 0.003 A. The perturbed electrostatic Coulomb law is a universal molecular function. Ab initio zero molecular parameter functions give PECs of acceptable quality, just using atomic ionisation energies. The function can be used as a model potential for inverting levels and gives a first principle's comparison of short- and long-range interactions, important for the study of cold atoms. Wave-packet dynamics, femto-chemistry applied to the crossing of covalent and ionic curves, can provide evidence for this theory. We anticipate this scale/shape invariant scheme applies to smaller scales in nuclear and high-energy particle physics. For larger gravitational scales (Newton 1/R potentials), problems with super-unification are discussed. Reactions between hydrogen and antihydrogen, feasible in the near future, will probably produce normal H2.
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Affiliation(s)
- G Van Hooydonk
- Department of Library Sciences, Ghent University, Belgium.
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33
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Remacle F, Levine RD. On the classical limit for electronic structure and dynamics in the orbital approximation. J Chem Phys 2000. [DOI: 10.1063/1.1288915] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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34
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Remacle F, Levine RD. Broken Symmetry in the Density of Electronic States of an Array of Quantum Dots As Computed for Scanning Tunneling Microscopy. J Phys Chem A 2000. [DOI: 10.1021/jp0012956] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- F. Remacle
- Département de Chimie, B6, Université de Liège, B 4000 Liège, Belgium
| | - R. D. Levine
- The Fritz Haber Research Center for Molecular Dynamics, The Hebrew University, Jerusalem 91904, Israel, and Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095
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35
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Remacle F, Levine RD. Electronic Response of Assemblies of Designer Atoms: The Metal−Insulator Transition and the Role of Disorder. J Am Chem Soc 2000. [DOI: 10.1021/ja9915448] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- F. Remacle
- Contribution from the Département de Chimie, B6, Université de Liège, B 4000 Liège, Belgium, The Fritz Haber Research Center for Molecular Dynamics, The Hebrew University, Jerusalem 91904, Israel, and Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095
| | - R. D. Levine
- Contribution from the Département de Chimie, B6, Université de Liège, B 4000 Liège, Belgium, The Fritz Haber Research Center for Molecular Dynamics, The Hebrew University, Jerusalem 91904, Israel, and Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095
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Remacle F, Levine RD. Configuration Interaction between Covalent and Ionic States in the Quantal and Semiclassical Limits with Application to Coherent and Hopping Charge Migration. J Phys Chem A 2000. [DOI: 10.1021/jp992924i] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- F. Remacle
- Département de Chimie, B6, Université de Liège, B 4000 Liège, Belgium
| | - R. D. Levine
- The Fritz Haber Research Center for Molecular Dynamics, The Hebrew University, Jerusalem 91904, Israel, and Department of Chemistry and Biochemistry, University of CaliforniaLos Angeles, Los Angeles, California 90095
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Remacle F, Levine RD. Architecture with designer atoms: simple theoretical considerations. Proc Natl Acad Sci U S A 2000; 97:553-8. [PMID: 10639117 PMCID: PMC15368 DOI: 10.1073/pnas.97.2.553] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The distinct electronic states of assemblies of metallic quantum dots are discussed in a simple approximation where each dot is mimicked as an "atom" that carries one valence electron. Because of their large size, the charging energy of the dots, I = energy required to add another electron, is much smaller than for ordinary atoms. The Coulomb blocking of charge migration is therefore easier to overcome. For the theory, however, this is a challenge, because ionic states, which are typically higher in energy, come down, so the density of electronic states is high, and special methods need to be adapted. Quantum dots are prepared by wet chemical methods and accordingly are not quite identical. They will have a size distribution that can be narrow (when the dots can be assembled into an ordered array) or broad. Other sources of disorder are packing imperfections, which are characteristic of a wider size distribution, ligand deformations, and chemical unevenness. Two experimental control parameters are the size of the dots and the spacing between them. We discuss the combined effects of the low charging energy and disorder and examine the distinct electronic phases that can be realized.
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Affiliation(s)
- F Remacle
- Département de Chimie, B6, Université de Liège, B 4000 Liège, Belgium
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