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Yamamoto YI, Suzuki T. Ultrafast Geminate Recombination Facilitated by Hydrogen-Atom Transfer in Charge Transfer Reactions from Hydroxide and Methoxide Ions. J Phys Chem Lett 2023; 14:10463-10468. [PMID: 37963188 DOI: 10.1021/acs.jpclett.3c02815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2023]
Abstract
Previous transient absorption spectroscopy (TAS) hinted at an exceptionally rapid geminate recombination process in charge transfer reactions involving OH- or OD- ions in liquid water and CH3O- ions in liquid methanol. However, a comprehensive investigation of these dynamics using TAS has been hindered by the technical challenges stemming from the ultrafast spectral shift that spans a wide wavelength range from the mid-infrared to the visible on the subpicosecond time scale. To address these challenges, we have employed ultraviolet time-resolved photoelectron spectroscopy of aqueous solutions, enabling us to observe and analyze the complete dynamics, including electron detachment, solvation, and geminate recombination. Our findings are consistent with those of Iglev et al. ( J. Phys. Chem. Lett. 2015, 6, 986-992), supporting the hypothesis that the structural diffusion of OH/OD/CH3O induced by a presolvated electron plays a pivotal role in facilitating ultrafast geminate recombination.
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Affiliation(s)
- Yo-Ichi Yamamoto
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-Ku, Kyoto 606-8502, Japan
| | - Toshinori Suzuki
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-Ku, Kyoto 606-8502, Japan
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2
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Koga M, Yoneda Y, Sotome H, Miyasaka H. Ionization dynamics of a phenylenediamine derivative in solutions as revealed by femtosecond simultaneous and stepwise two-photon excitation. Phys Chem Chem Phys 2019; 21:2889-2898. [PMID: 30451254 DOI: 10.1039/c8cp06530f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Femtosecond transient absorption spectroscopy with off-resonant simultaneous and resonant stepwise two-photon excitation methods were applied to the direct observation of photoionization dynamics of a phenylenediamine derivative in n-hexane, ethanol and acetonitrile solutions. Upon the selective excitation of the solute via the off-resonant two-photon excitation to the energy level almost equivalent with the ionization potential in the gas phase, rapid appearance of the radical cation (within ca. 100-200 fs) was observed in polar and nonpolar solutions. On the other hand, in the case where the excited energy level from the ground state is 0.8 eV lower than the ionization potential in the gas phase, the radical cation appears only in polar solutions in sub-ps to ps time scales, indicating that the photoionization does not occur directly from the highly electronically excited state even in the polar solution. Comparison of the dynamics between ethanol and acetonitrile solutions strongly suggested that the solvation process of the precursor species leading to the ionization took a crucial role in the electron ejection process with lower energy in polar solutions.
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Affiliation(s)
- Masafumi Koga
- Division of Frontier Materials Science and Center for Advanced Interdisciplinary Research, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan.
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3
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Dubosq C, Zanuttini D, Gervais B. RASPT2 Analysis of the F–(H2O)n=1–7 and OH–(H2O)n=1–7 CTTS States. J Phys Chem A 2018; 122:7033-7041. [DOI: 10.1021/acs.jpca.8b04970] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- C. Dubosq
- Normandie University, ENSICAEN, UNICAEN, CEA, CNRS, CIMAP, UMR 6252, BP 5133, F-14070 Caen Cedex 05, France
| | - D. Zanuttini
- Normandie University, ENSICAEN, UNICAEN, CEA, CNRS, CIMAP, UMR 6252, BP 5133, F-14070 Caen Cedex 05, France
| | - B. Gervais
- Normandie University, ENSICAEN, UNICAEN, CEA, CNRS, CIMAP, UMR 6252, BP 5133, F-14070 Caen Cedex 05, France
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4
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Abstract
The dynamics of chemical reactions in liquid solutions are now amenable to direct study using ultrafast laser spectroscopy techniques and advances in computer simulation methods. The surrounding solvent affects the chemical reaction dynamics in numerous ways, which include: (i) formation of complexes between reactants and solvent molecules; (ii) modifications to transition state energies and structures relative to the reactants and products; (iii) coupling between the motions of the reacting molecules and the solvent modes, and exchange of energy; (iv) solvent caging of reactants and products; and (v) structural changes to the solvation shells in response to the changing chemical identity of the solutes, on timescales which may be slower than the reactive events. This article reviews progress in the study of bimolecular chemical reaction dynamics in solution, concentrating on reactions which occur on ground electronic states. It illustrates this progress with reference to recent experimental and computational studies, and considers how the various ways in which a solvent affects the chemical reaction dynamics can be unravelled. Implications are considered for research in fields such as mechanistic synthetic chemistry.
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Affiliation(s)
- Andrew J Orr-Ewing
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK.
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5
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Affiliation(s)
- David Zanuttini
- CIMAP, ENSICAEN, CNRS, CEA/IRAMIS, Université de Caen, 14070 Caen cedex 05, France
| | - Benoit Gervais
- CIMAP, ENSICAEN, CNRS, CEA/IRAMIS, Université de Caen, 14070 Caen cedex 05, France
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6
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Hutzler D, Werhahn JC, Heider R, Bradler M, Kienberger R, Riedle E, Iglev H. Highly Selective Relaxation of the OH Stretching Overtones in Isolated HDO Molecules Observed by Infrared Pump-Repump-Probe Spectroscopy. J Phys Chem A 2015; 119:6831-6. [PMID: 26039752 DOI: 10.1021/acs.jpca.5b05145] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A quantitative investigation of the relaxation dynamics of higher-lying vibrational states is afforded by a novel method of infrared pump-repump-probe spectroscopy. The technique is used to study the dynamics of OH stretching overtones in NaClO4·HDO monohydrate. We observe a continuous decrease of the energy separation for the first four states, i.e. v01 = 3575 cm(-1), v12 = 3370 cm(-1), and v23 = 3170 cm(-1), respectively. The population lifetime of the first excited state is 7.2 ps, while the one of the second excited state is largely reduced to 1.4 ps. The relaxation of the v = 2 state proceeds nearly quantitatively to the v = 1 state. The new information on the OH stretching overtones demands improved theoretical potentials and modeling of the H bond interactions. This work shows the potential of the new technique for the precise study of complex vibrational relaxation pathways.
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Affiliation(s)
- Daniel Hutzler
- †Physik-Department, Technische Universität München, James-Franck-Strasse, D-85748 Garching, Germany
| | - Jasper C Werhahn
- †Physik-Department, Technische Universität München, James-Franck-Strasse, D-85748 Garching, Germany
| | - Rupert Heider
- †Physik-Department, Technische Universität München, James-Franck-Strasse, D-85748 Garching, Germany
| | - Maximilian Bradler
- ‡Lehrstuhl für BioMolekulare Optik, Ludwig-Maximilians-Universität München, Oettingenstraße 67, D-80538 Munich, Germany
| | - Reinhard Kienberger
- †Physik-Department, Technische Universität München, James-Franck-Strasse, D-85748 Garching, Germany
| | - Eberhard Riedle
- ‡Lehrstuhl für BioMolekulare Optik, Ludwig-Maximilians-Universität München, Oettingenstraße 67, D-80538 Munich, Germany
| | - Hristo Iglev
- †Physik-Department, Technische Universität München, James-Franck-Strasse, D-85748 Garching, Germany
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7
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Affiliation(s)
- Andrew J. Orr-Ewing
- School of Chemistry, University of Bristol, Bristol BS8 1TS, United Kingdom;
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8
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Iglev H, Kolev SK, Rossmadl H, St Petkov P, Vayssilov GN. Hydrogen Atom Transfer from Water or Alcohols Activated by Presolvated Electrons. J Phys Chem Lett 2015; 6:986-992. [PMID: 26262857 DOI: 10.1021/acs.jpclett.5b00288] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
High-energy irradiation of protic solvents can transiently introduce excess electrons that are implicated in a diverse range of reductive processes. Here we report the evolution of electron solvation in water and in alcohols following photodetachment from aqueous hydroxide or the corresponding alkoxides studied by two- and three-pulse femtosecond spectroscopy and ab initio molecular dynamic simulations. The experiments reveal an ultrafast recombination channel of the excess electrons. Through the calculations this channel emerges as an H-atom transfer process to the hydroxyl or alkoxy radical species from neighboring solvent molecules, which are activated as the presolvated electron occupies their antibonding orbitals. The initially low activation barrier in the early stages of electron solvation was found to increase (from 12 to 44 kJ/mol in water) as full solvation proceeded.
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Affiliation(s)
- Hristo Iglev
- †Physik-Department, Technische Universität München, James-Franck-Strasse, D-85748 Garching, Germany
| | - Stefan K Kolev
- ‡Faculty of Chemistry and Pharmacy, University of Sofia, Blvd. J. Bauchier 1, 1126 Sofia, Bulgaria
| | - Hubert Rossmadl
- †Physik-Department, Technische Universität München, James-Franck-Strasse, D-85748 Garching, Germany
| | - Petko St Petkov
- ‡Faculty of Chemistry and Pharmacy, University of Sofia, Blvd. J. Bauchier 1, 1126 Sofia, Bulgaria
- ∥Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany
| | - Georgi N Vayssilov
- ‡Faculty of Chemistry and Pharmacy, University of Sofia, Blvd. J. Bauchier 1, 1126 Sofia, Bulgaria
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9
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Yan F, Zheng J, Xue X, Zhang J, Huang F, Qiu Y. Radical macro spatial separation: a novel way to enhance the photocatalytic efficiency. RSC Adv 2015. [DOI: 10.1039/c5ra00882d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Radical macro spatial separation can be achieved via a new photocatalytic system and significantly improved the photocatalytic efficiency.
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Affiliation(s)
- Fengpo Yan
- College of Electronics and Information Science
- Fujian Jiangxia University
- Fuzhou 350108
- China
- Institute of Advanced Photovoltaics
| | - Jinsheng Zheng
- Key Laboratory of Optoelectronic Materials Chemistry and Physics
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- China
| | - Xiaogang Xue
- Key Laboratory of Optoelectronic Materials Chemistry and Physics
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- China
| | - Jiye Zhang
- Key Laboratory of Optoelectronic Materials Chemistry and Physics
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- China
| | - Feng Huang
- Key Laboratory of Optoelectronic Materials Chemistry and Physics
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- China
| | - Yu Qiu
- College of Electronics and Information Science
- Fujian Jiangxia University
- Fuzhou 350108
- China
- Institute of Advanced Photovoltaics
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10
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Opalka D, Sprik M. Solute–Solvent Charge-Transfer Excitations and Optical Absorption of Hydrated Hydroxide from Time-Dependent Density-Functional Theory. J Chem Theory Comput 2014; 10:2465-70. [DOI: 10.1021/ct5002889] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Daniel Opalka
- Department
of Chemistry, University of Cambridge, Cambridge CB2 1EW, United Kingdom
| | - Michiel Sprik
- Department
of Chemistry, University of Cambridge, Cambridge CB2 1EW, United Kingdom
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11
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Zhu J, Paparelli L, Hospes M, Arents J, Kennis JTM, van Stokkum IHM, Hellingwerf KJ, Groot ML. Photoionization and Electron Radical Recombination Dynamics in Photoactive Yellow Protein Investigated by Ultrafast Spectroscopy in the Visible and Near-Infrared Spectral Region. J Phys Chem B 2013; 117:11042-8. [DOI: 10.1021/jp311906f] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jingyi Zhu
- Department
of Physics and Astronomy,
Faculty of Sciences, VU University, De
Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
| | - Laura Paparelli
- Department
of Physics and Astronomy,
Faculty of Sciences, VU University, De
Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
| | - Marijke Hospes
- Laboratory for Microbiology,
Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The
Netherlands
| | - Jos Arents
- Laboratory for Microbiology,
Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The
Netherlands
| | - John T. M. Kennis
- Department
of Physics and Astronomy,
Faculty of Sciences, VU University, De
Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
| | - Ivo H. M. van Stokkum
- Department
of Physics and Astronomy,
Faculty of Sciences, VU University, De
Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
| | - Klaas J. Hellingwerf
- Laboratory for Microbiology,
Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The
Netherlands
| | - Marie Louise Groot
- Department
of Physics and Astronomy,
Faculty of Sciences, VU University, De
Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
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12
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Codorniu-Hernández E, Kusalik PG. Mobility mechanism of hydroxyl radicals in aqueous solution via hydrogen transfer. J Am Chem Soc 2011; 134:532-8. [PMID: 22107057 DOI: 10.1021/ja208874t] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The hydroxyl radical (OH*) is a highly reactive oxygen species that plays a salient role in aqueous solution. The influence of water molecules upon the mobility and reactivity of the OH* constitutes a crucial knowledge gap in our current understanding of many critical reactions that impact a broad range of scientific fields. Specifically, the relevant molecular mechanisms associated with OH* mobility and the possibility of diffusion in water via a H-transfer reaction remain open questions. Here we report insights into the local hydration and electronic structure of the OH* in aqueous solution from Car-Parrinello molecular dynamics and explore the mechanism of H-transfer between OH* and a water molecule. The relatively small free energy barrier observed (~4 kcal/mol) supports a conjecture that the H-transfer can be a very rapid process in water, in accord with very recent experimental results, and that this reaction can contribute significantly to OH* mobility in aqueous solution. Our findings reveal a novel H-transfer mechanism of hydrated OH*, resembling that of hydrated OH(-) and presenting hybrid characteristics of hydrogen-atom and electron-proton transfer processes, where local structural fluctuations play a pivotal role.
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Affiliation(s)
- Edelsys Codorniu-Hernández
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary T2N1N4, Alberta, Canada
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13
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Codorniu-Hernández E, Kusalik PG. Insights into the Solvation and Mobility of the Hydroxyl Radical in Aqueous Solution. J Chem Theory Comput 2011; 7:3725-32. [DOI: 10.1021/ct200418e] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Edelsys Codorniu-Hernández
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, T2N1N4, Alberta, Canada
| | - Peter G. Kusalik
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, T2N1N4, Alberta, Canada
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14
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Direct observation of ultrafast-electron-transfer reactions unravels high effectiveness of reductive DNA damage. Proc Natl Acad Sci U S A 2011; 108:11778-83. [PMID: 21730183 DOI: 10.1073/pnas.1104367108] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Both water and electron-transfer reactions play important roles in chemistry, physics, biology, and the environment. Oxidative DNA damage is a well-known mechanism, whereas the relative role of reductive DNA damage is unknown. The prehydrated electron (e(pre)-), a novel species of electrons in water, is a fascinating species due to its fundamental importance in chemistry, biology, and the environment. e(pre)- is an ideal agent to observe reductive DNA damage. Here, we report both the first in situ femtosecond time-resolved laser spectroscopy measurements of ultrafast-electron-transfer (UET) reactions of e(pre)- with various scavengers (KNO(3), isopropanol, and dimethyl sulfoxide) and the first gel electrophoresis measurements of DNA strand breaks induced by e(pre)- and OH(•) radicals co-produced by two-UV-photon photolysis of water. We strikingly found that the yield of reductive DNA strand breaks induced by each e(pre)- is twice the yield of oxidative DNA strand breaks induced by each OH(•) radical. Our results not only unravel the long-standing mystery about the relative role of radicals in inducing DNA damage under ionizing radiation, but also challenge the conventional notion that oxidative damage is the main pathway for DNA damage. The results also show the potential of femtomedicine as a new transdisciplinary frontier and the broad significance of UET reactions of e(pre)- in many processes in chemistry, physics, biology, and the environment.
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15
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Fischer MK, Rossmadl H, Iglev H. Novel geminate recombination channel after indirect photoionization of water. J Chem Phys 2011; 134:214507. [PMID: 21663367 DOI: 10.1063/1.3597776] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
We studied the photolysis of neat protonated and heavy water using pump-probe and pump-repump-probe spectroscopy. A novel recombination channel is reported leading to ultrafast quenching (0.7 ± 0.1 ps) of almost one third of the initial number of photo-generated electrons. The efficiency and the recombination rate of this channel are lower in heavy water, 27 ± 5% and (0.9 ± 0.1 ps)(-1), respectively. Comparison with similar data measured after photodetachment of aqueous hydroxide provides evidence for the formation of short-lived OH:e(-) (OD:e(-)) pairs after indirect photoionization of water at 9.2 eV.
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Affiliation(s)
- Martin K Fischer
- Physik-Department E 11, Technische Universität München, D-85748 Garching, Germany
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16
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Torres-Alacan J, Kratz S, Vöhringer P. Independent pairs and Monte-Carlo simulations of the geminate recombination of solvated electrons in liquid-to-supercritical water. Phys Chem Chem Phys 2011; 13:20806-19. [DOI: 10.1039/c1cp21678c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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