1
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Zhang T, Wen M, Ding C, Zhang Y, Ma X, Wang Z, Lily M, Liu J, Wang R. Multiple evaluations of atmospheric behavior between Criegee intermediates and HCHO: Gas-phase and air-water interface reaction. J Environ Sci (China) 2023; 127:308-319. [PMID: 36522063 DOI: 10.1016/j.jes.2022.06.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 05/31/2022] [Accepted: 06/02/2022] [Indexed: 06/17/2023]
Abstract
Given the high abundance of water in the atmosphere, the reaction of Criegee intermediates (CIs) with (H2O)2 is considered to be the predominant removal pathway for CIs. However, recent experimental findings reported that the reactions of CIs with organic acids and carbonyls are faster than expected. At the same time, the interface behavior between CIs and carbonyls has not been reported so far. Here, the gas-phase and air-water interface behavior between Criegee intermediates and HCHO were explored by adopting high-level quantum chemical calculations and Born-Oppenheimer molecular dynamics (BOMD) simulations. Quantum chemical calculations evidence that the gas-phase reactions of CIs + HCHO are submerged energy or low energy barriers processes. The rate ratios speculate that the HCHO could be not only a significant tropospheric scavenger of CIs, but also an inhibitor in the oxidizing ability of CIs on SOx in dry and highly polluted areas with abundant HCHO concentration. The reactions of CH2OO with HCHO at the droplet's surface follow a loop structure mechanism to produce i) SOZ (), ii) BHMP (HOCH2OOCH2OH), and iii) HMHP (HOCH2OOH). Considering the harsh reaction conditions between CIs and HCHO at the interface (i.e., the two molecules must be sufficiently close to each other), the hydration of CIs is still their main atmospheric loss pathway. These results could help us get a better interpretation of the underlying CIs-aldehydes chemical processes in the global polluted urban atmospheres.
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Affiliation(s)
- Tianlei Zhang
- Institute of Theoretical and Computational Chemistry, Shaanxi Key Laboratory of Catalysis, School of Chemical & Environment Science, Shaanxi University of Technology, Hanzhong 723001, China.
| | - Mingjie Wen
- Institute of Theoretical and Computational Chemistry, Shaanxi Key Laboratory of Catalysis, School of Chemical & Environment Science, Shaanxi University of Technology, Hanzhong 723001, China
| | - Chao Ding
- Institute of Theoretical and Computational Chemistry, Shaanxi Key Laboratory of Catalysis, School of Chemical & Environment Science, Shaanxi University of Technology, Hanzhong 723001, China
| | - Yongqi Zhang
- Institute of Theoretical and Computational Chemistry, Shaanxi Key Laboratory of Catalysis, School of Chemical & Environment Science, Shaanxi University of Technology, Hanzhong 723001, China
| | - Xiaohui Ma
- School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China.
| | - Zhuqing Wang
- Shandong Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou 253023, China
| | - Makroni Lily
- Environmental Research Institute, Shandong University, Qingdao 266237, China
| | - Junhai Liu
- Institute of Theoretical and Computational Chemistry, Shaanxi Key Laboratory of Catalysis, School of Chemical & Environment Science, Shaanxi University of Technology, Hanzhong 723001, China; Qinba Mountains of Bio-Resource Collaborative Innovation Center of Southern Shaanxi Province, Shaanxi University of Technology, Hanzhong 723001, China
| | - Rui Wang
- Institute of Theoretical and Computational Chemistry, Shaanxi Key Laboratory of Catalysis, School of Chemical & Environment Science, Shaanxi University of Technology, Hanzhong 723001, China
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2
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Martins-Costa MTC, Anglada JM, Francisco JS, Ruiz-López MF. Photosensitization mechanisms at the air-water interface of aqueous aerosols. Chem Sci 2022; 13:2624-2631. [PMID: 35340860 PMCID: PMC8890110 DOI: 10.1039/d1sc06866k] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 02/04/2022] [Indexed: 11/24/2022] Open
Abstract
Photosensitization reactions are believed to provide a key contribution to the overall oxidation chemistry of the Earth's atmosphere. Generally, these processes take place on the surface of aqueous aerosols, where organic surfactants accumulate and react, either directly or indirectly, with the activated photosensitizer. However, the mechanisms involved in these important interfacial phenomena are still poorly known. This work sheds light on the reaction mechanisms of the photosensitizer imidazole-2-carboxaldehyde through ab initio (QM/MM) molecular dynamics simulations and high-level ab initio calculations. The nature of the lowest excited states of the system (singlets and triplets) is described in detail for the first time in the gas phase, in bulk water, and at the air–water interface, and possible intersystem crossing mechanisms leading to the reactive triplet state are analyzed. Moreover, the reactive triplet state is shown to be unstable at the air–water surface in a pure water aerosol. The combination of this finding with the results obtained for simple surfactant-photosensitizer models, together with experimental data from the literature, suggests that photosensitization reactions assisted by imidazole-2-carboxaldehyde at the surface of aqueous droplets can only occur in the presence of surfactant species, such as fatty acids, that stabilize the photoactivated triplet at the interface. These findings should help the interpretation of field measurements and the design of new laboratory experiments to better understand atmospheric photosensitization processes. First-principles molecular dynamics simulations of imidazole-2-carboxaldehyde at the air–water interface highlight the role of surfactants in stabilising the reactive triplet state involved in photosensitisation reactions in aqueous aerosols.![]()
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Affiliation(s)
- Marilia T C Martins-Costa
- Laboratoire de Physique et Chimie Théoriques, UMR CNRS 7019, University of Lorraine, CNRS BP 70239 54506 Vandoeuvre-lès-Nancy France
| | - Josep M Anglada
- Departament de Química Biològica IQAC-CSIC c/ Jordi Girona 18 E-08034 Barcelona Spain
| | - Joseph S Francisco
- Department of Earth and Environmental Science and Department of Chemistry, University of Pennsylvania Philadelphia PA 19104-631 USA
| | - Manuel F Ruiz-López
- Laboratoire de Physique et Chimie Théoriques, UMR CNRS 7019, University of Lorraine, CNRS BP 70239 54506 Vandoeuvre-lès-Nancy France
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3
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Ortega-Guerrero A, Sahabudeen H, Croy A, Dianat A, Dong R, Feng X, Cuniberti G. Multiscale Modeling Strategy of 2D Covalent Organic Frameworks Confined at an Air-Water Interface. ACS APPLIED MATERIALS & INTERFACES 2021; 13:26411-26420. [PMID: 34034486 DOI: 10.1021/acsami.1c05967] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Two-dimensional covalent organic frameworks (2D COFs) have attracted attention as versatile active materials in many applications. Recent advances have demonstrated the synthesis of monolayer 2D COF via an air-water interface. However, the interfacial 2D polymerization mechanism has been elusive. In this work, we have used a multiscale modeling strategy to study dimethylmethylene-bridged triphenylamine building blocks confined at the air-water interface to form a 2D COF via Schiff-base reaction. A synergy between the computational investigations and experiments allowed the synthesis of a 2D-COF with one of the linkers considered. Our simulations complement the experimental characterization and show the preference of the building blocks to be at the interface with a favorable orientation for the polymerization. The air-water interface is shown to be a key factor to stabilize a flat conformation when a dimer molecule is considered. The structural and electronic properties of the monolayer COFs based on the two monomers are calculated and show a semiconducting nature with direct bandgaps. Our strategy provides a first step toward the in silico polymerization of 2D COFs at air-water interfaces capturing the initial steps of the synthesis up to the prediction of electronic properties of the 2D material.
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Affiliation(s)
- Andres Ortega-Guerrero
- Laboratory of Molecular Simulation (LSMO), Institut des Sciences et Ingénierie Chimiques, Valais Ecole Polytechnique Fédérale de Lausanne (EPFL), Rue de l'Industrie 17, CH-1951 Sion, Valais, Switzerland
| | - Hafeesudeen Sahabudeen
- Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062 Dresden, Germany
- Center for Advancing Electronics Dresden (CFAED), Technische Universität Dresden, 01062 Dresden, Germany
- Institute of Active Polymers, Helmholtz-Zentrum Hereon, Teltow 14513, Germany
| | - Alexander Croy
- Institute for Materials Science and Max Bergmann Center of Biomaterials, Technische Universität Dresden, 01062 Dresden, Germany
| | - Arezoo Dianat
- Institute for Materials Science and Max Bergmann Center of Biomaterials, Technische Universität Dresden, 01062 Dresden, Germany
| | - Renhao Dong
- Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062 Dresden, Germany
- Center for Advancing Electronics Dresden (CFAED), Technische Universität Dresden, 01062 Dresden, Germany
| | - Xinliang Feng
- Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062 Dresden, Germany
- Center for Advancing Electronics Dresden (CFAED), Technische Universität Dresden, 01062 Dresden, Germany
| | - Gianaurelio Cuniberti
- Institute for Materials Science and Max Bergmann Center of Biomaterials, Technische Universität Dresden, 01062 Dresden, Germany
- Dresden Center for Computational Materials Science (DCMS), Technische Universität Dresden, 01062 Dresden, Germany
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4
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Borrego-Sánchez A, Zemmouche M, Carmona-García J, Francés-Monerris A, Mulet P, Navizet I, Roca-Sanjuán D. Multiconfigurational Quantum Chemistry Determinations of Absorption Cross Sections (σ) in the Gas Phase and Molar Extinction Coefficients (ε) in Aqueous Solution and Air-Water Interface. J Chem Theory Comput 2021; 17:3571-3582. [PMID: 33974417 PMCID: PMC8444339 DOI: 10.1021/acs.jctc.0c01083] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Indexed: 11/29/2022]
Abstract
Theoretical determinations of absorption cross sections (σ) in the gas phase and molar extinction coefficients (ε) in condensed phases (water solution, interfaces or surfaces, protein or nucleic acids embeddings, etc.) are of interest when rates of photochemical processes, J = ∫ ϕ(λ) σ(λ) I(λ) dλ, are needed, where ϕ(λ) and I(λ) are the quantum yield of the process and the irradiance of the light source, respectively, as functions of the wavelength λ. Efficient computational strategies based on single-reference quantum-chemistry methods have been developed enabling determinations of line shapes or, in some cases, achieving rovibrational resolution. Developments are however lacking for strongly correlated problems, with many excited states, high-order excitations, and/or near degeneracies between states of the same and different spin multiplicities. In this work, we define and compare the performance of distinct computational strategies using multiconfigurational quantum chemistry, nuclear sampling of the chromophore (by means of molecular dynamics, ab initio molecular dynamics, or Wigner sampling), and conformational and statistical sampling of the environment (by means of molecular dynamics). A new mathematical approach revisiting previous absolute orientation algorithms is also developed to improve alignments of geometries. These approaches are benchmarked through the nπ* band of acrolein not only in the gas phase and water solution but also in a gas-phase/water interface, a common situation for instance in atmospheric chemistry. Subsequently, the best strategy is used to compute the absorption band for the adduct formed upon addition of an OH radical to the C6 position of uracil and compared with the available experimental data. Overall, quantum Wigner sampling of the chromophore with molecular dynamics sampling of the environment with CASPT2 electronic-structure determinations arise as a powerful methodology to predict meaningful σ(λ) and ε(λ) band line shapes with accurate absolute intensities.
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Affiliation(s)
- Ana Borrego-Sánchez
- Instituto
Andaluz de Ciencias de la Tierra, CSIC-University
of Granada, Av. de las
Palmeras 4, 18100 Armilla, Granada, Spain
| | - Madjid Zemmouche
- MSME,
Univ Gustave Eiffel, CNRS UMR 8208, Univ Paris-Est Créteil 8208, F-77454 Marne-la-Vallée, France
| | - Javier Carmona-García
- Instituto
de Ciencia Molecular, Universitat de València, P.O. Box 22085, València, Spain
| | - Antonio Francés-Monerris
- Université
de Lorraine and CNRS, LPCT UMR 7019, F-54000 Nancy, France
- Departamento
de Química Física, Universitat
de València, C/Dr.
Moliner 50, 46100 Burjassot, Spain
| | - Pep Mulet
- Departamento
de Matemáticas Área de Matemática Aplicada Facultad
de Matemáticas C/Dr. Moliner, 50 46100 Burjassot, Spain
| | - Isabelle Navizet
- MSME,
Univ Gustave Eiffel, CNRS UMR 8208, Univ Paris-Est Créteil 8208, F-77454 Marne-la-Vallée, France
| | - Daniel Roca-Sanjuán
- Instituto
de Ciencia Molecular, Universitat de València, P.O. Box 22085, València, Spain
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5
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Anglada JM, Martins-Costa MTC, Francisco JS, Ruiz-López MF. Reactivity of Undissociated Molecular Nitric Acid at the Air-Water Interface. J Am Chem Soc 2020; 143:453-462. [PMID: 33355444 DOI: 10.1021/jacs.0c11841] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Recent experiments and theoretical calculations have shown that HNO3 may exist in molecular form in aqueous environments, where in principle one would expect this strong acid to be completely dissociated. Much effort has been devoted to understanding this fact, which has huge environmental relevance since nitric acid is a component of acid rain and also contributes to renoxification processes in the atmosphere. Although the importance of heterogeneous processes such as oxidation and photolysis have been evidenced by experiments, most theoretical studies on hydrated molecular HNO3 have focused on the acid dissociation mechanism. In the present work, we carry out calculations at various levels of theory to obtain insight into the properties of molecular nitric acid at the surface of liquid water (the air-water interface). Through multi-nanosecond combined quantum-classical molecular dynamics simulations, we analyze the interface affinity of nitric acid and provide an order of magnitude for its lifetime with regard to acid dissociation, which is close to the value deduced using thermodynamic data in the literature (∼0.3 ns). Moreover, we study the electronic absorption spectrum and calculate the rate constant for the photolytic process HNO3 + hν → NO2 + OH, leading to 2 × 10-6 s-1, about twice the value in the gas phase. Finally, we describe the reaction HNO3 + OH → NO3 + H2O using a cluster model containing 21 water molecules with the help of high-level ab initio calculations. A large number of reaction paths are explored, and our study leads to the conclusion that the most favorable mechanism involves the formation of a pre-reactive complex (HNO3)(OH) from which product are obtained through a coupled proton-electron transfer mechanism that has a free-energy barrier of 6.65 kcal·mol-1. Kinetic calculations predict a rate constant increase by ∼4 orders of magnitude relative to the gas phase, and we conclude that at the air-water interface, a lower limit for the rate constant is k = 1.2 × 10-9 cm3·molecule-1·s-1. The atmospheric significance of all these results is discussed.
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Affiliation(s)
- Josep M Anglada
- Departament de Química Biològica, Institut de Química Avançada de Catalunya (IQAC - CSIC), c/Jordi Girona 18, E-08034 Barcelona, Spain
| | - Marilia T C Martins-Costa
- Laboratoire de Physique et Chimie Théoriques, UMR CNRS 7019, University of Lorraine, BP 70239, 54506 Vandoeuvre-lès-Nancy, France
| | - Joseph S Francisco
- Department of Earth and Environmental Science and Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6316, United States
| | - Manuel F Ruiz-López
- Laboratoire de Physique et Chimie Théoriques, UMR CNRS 7019, University of Lorraine, BP 70239, 54506 Vandoeuvre-lès-Nancy, France
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6
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Tang B, Li Z. Molecular Mechanisms and Atmospheric Implications of Criegee Intermediate-Alcohol Chemistry in the Gas Phase and Aqueous Surface Environments. J Phys Chem A 2020; 124:8585-8593. [PMID: 32946233 DOI: 10.1021/acs.jpca.0c06427] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Criegee intermediates and alcohols are important species in the atmosphere. In this study, we use quantum chemistry and Born-Oppenheimer molecular dynamics (BOMD) simulations to investigate the reaction between methanol/ethanol and Criegee intermediates (anti- or syn-CH3CHOO) in the gas phase and at the air-water interface. Reactions at the interface are found to be much faster than those in the gas phase. When water molecules are available, loop structures can be formed to facilitate the reaction. In addition, nonloop reaction pathways characterized by the formation of hydrated protons, although with a low possibility, are also identified at the air-water interface. Implications of our results on the fate of Criegee intermediates in the atmosphere are discussed, which deepen our understanding of Criegee intermediate-alcohol chemistry in humid environments.
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Affiliation(s)
- Bo Tang
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Zhenyu Li
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
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7
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Martins‐Costa MTC, Ruiz‐López MF. Isoprene Reactivity on Water Surfaces from ab initio QM/MM Molecular Dynamics Simulations. Chemphyschem 2020; 21:2263-2271. [DOI: 10.1002/cphc.202000652] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 08/17/2020] [Indexed: 11/07/2022]
Affiliation(s)
- Marilia T. C. Martins‐Costa
- Laboratoire de Physique et Chimie Théoriques UMR CNRS 7019 University of Lorraine CNRS BP 70239 54506 Vandoeuvre-lès-Nancy France
| | - Manuel F. Ruiz‐López
- Laboratoire de Physique et Chimie Théoriques UMR CNRS 7019 University of Lorraine CNRS BP 70239 54506 Vandoeuvre-lès-Nancy France
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8
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Huang Y, Barraza KM, Kenseth CM, Zhao R, Wang C, Beauchamp JL, Seinfeld JH. Probing the OH Oxidation of Pinonic Acid at the Air–Water Interface Using Field-Induced Droplet Ionization Mass Spectrometry (FIDI-MS). J Phys Chem A 2018; 122:6445-6456. [DOI: 10.1021/acs.jpca.8b05353] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Yuanlong Huang
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, California 91125, United States
| | - Kevin M. Barraza
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Christopher M. Kenseth
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Ran Zhao
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Chen Wang
- Department of Chemistry and Department of Physical and Environmental Sciences, University of Toronto, Toronto, Ontario M1C 1A4, Canada
| | - J. L. Beauchamp
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - John H. Seinfeld
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
- Division of Engineering and Applied Science, California Institute of Technology, Pasadena, California 91125, United States
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9
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Martins‐Costa MTC, Anglada JM, Ruiz‐López MF. Computational Insights into the CH
3
Cl+OH Chemical Reaction Dynamics at the Air–Water Interface. Chemphyschem 2017; 18:2747-2755. [DOI: 10.1002/cphc.201700437] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Revised: 06/02/2017] [Indexed: 11/11/2022]
Affiliation(s)
| | - Josep M. Anglada
- Departament de Química Biològica i Modelització MolecularIQAC, CSIC c/ Jordi Girona 18 E-08034 Barcelona Spain
| | - Manuel F. Ruiz‐López
- SRSMCUniversity of Lorraine and CNRS Boulevard des Aiguillettes, BP 70239 54506 Vandoeuvre-lès-Nancy France
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10
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Reed Harris AE, Pajunoja A, Cazaunau M, Gratien A, Pangui E, Monod A, Griffith EC, Virtanen A, Doussin JF, Vaida V. Multiphase Photochemistry of Pyruvic Acid under Atmospheric Conditions. J Phys Chem A 2017; 121:3327-3339. [DOI: 10.1021/acs.jpca.7b01107] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Allison E. Reed Harris
- Department
of Chemistry and Biochemistry, CIRES, University of Colorado, Boulder, Colorado 80309, United States
| | - Aki Pajunoja
- Department
of Applied Physics, University of Eastern Finland, Kuopio Campus, P.O. Box 1627, 70211 Kuopio, Finland
| | - Mathieu Cazaunau
- LISA, UMR
CNRS 7583,
Université Paris Est Cretéil (UPEC), Université
Paris Diderot (UPD), Institut Pierre Simon Laplace (IPSL), 94010 Cretéil, France
| | - Aline Gratien
- LISA, UMR
CNRS 7583,
Université Paris Est Cretéil (UPEC), Université
Paris Diderot (UPD), Institut Pierre Simon Laplace (IPSL), 94010 Cretéil, France
| | - Edouard Pangui
- LISA, UMR
CNRS 7583,
Université Paris Est Cretéil (UPEC), Université
Paris Diderot (UPD), Institut Pierre Simon Laplace (IPSL), 94010 Cretéil, France
| | - Anne Monod
- Aix Marseille
Université, CNRS, LCE, 13331, Marseille, France
| | - Elizabeth C. Griffith
- Department
of Chemistry and Biochemistry, CIRES, University of Colorado, Boulder, Colorado 80309, United States
| | - Annele Virtanen
- Department
of Applied Physics, University of Eastern Finland, Kuopio Campus, P.O. Box 1627, 70211 Kuopio, Finland
| | - Jean-Francois Doussin
- LISA, UMR
CNRS 7583,
Université Paris Est Cretéil (UPEC), Université
Paris Diderot (UPD), Institut Pierre Simon Laplace (IPSL), 94010 Cretéil, France
| | - Veronica Vaida
- Department
of Chemistry and Biochemistry, CIRES, University of Colorado, Boulder, Colorado 80309, United States
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11
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Martins-Costa MTC, Ruiz-López MF. Reaching multi-nanosecond timescales in combined QM/MM molecular dynamics simulations through parallel horsetail sampling. J Comput Chem 2017; 38:659-668. [PMID: 28093779 DOI: 10.1002/jcc.24723] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 12/14/2016] [Accepted: 12/19/2016] [Indexed: 12/27/2022]
Abstract
We report an enhanced sampling technique that allows to reach the multi-nanosecond timescale in quantum mechanics/molecular mechanics molecular dynamics simulations. The proposed technique, called horsetail sampling, is a specific type of multiple molecular dynamics approach exhibiting high parallel efficiency. It couples a main simulation with a large number of shorter trajectories launched on independent processors at periodic time intervals. The technique is applied to study hydrogen peroxide at the water liquid-vapor interface, a system of considerable atmospheric relevance. A total simulation time of a little more than 6 ns has been attained for a total CPU time of 5.1 years representing only about 20 days of wall-clock time. The discussion of the results highlights the strong influence of the solvation effects at the interface on the structure and the electronic properties of the solute. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Marilia T C Martins-Costa
- SRSMC, Faculté des Sciences et Technologies, University of Lorraine, CNRS, BP 70236, 54506 Vandoeuvre-lès-Nancy, France
| | - Manuel F Ruiz-López
- SRSMC, Faculté des Sciences et Technologies, University of Lorraine, CNRS, BP 70236, 54506 Vandoeuvre-lès-Nancy, France
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12
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Di Remigio R, Mozgawa K, Cao H, Weijo V, Frediani L. A polarizable continuum model for molecules at spherical diffuse interfaces. J Chem Phys 2016; 144:124103. [PMID: 27036423 DOI: 10.1063/1.4943782] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
We present an extension of the Polarizable Continuum Model (PCM) to simulate solvent effects at diffuse interfaces with spherical symmetry, such as nanodroplets and micelles. We derive the form of the Green's function for a spatially varying dielectric permittivity with spherical symmetry and exploit the integral equation formalism of the PCM for general dielectric environments to recast the solvation problem into a continuum solvation framework. This allows the investigation of the solvation of ions and molecules in nonuniform dielectric environments, such as liquid droplets, micelles or membranes, while maintaining the computationally appealing characteristics of continuum solvation models. We describe in detail our implementation, both for the calculation of the Green's function and for its subsequent use in the PCM electrostatic problem. The model is then applied on a few test systems, mainly to analyze the effect of interface curvature on solvation energetics.
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Affiliation(s)
- Roberto Di Remigio
- Department of Chemistry, Centre for Theoretical and Computational Chemistry, UiT, The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Krzysztof Mozgawa
- Department of Chemistry, Centre for Theoretical and Computational Chemistry, UiT, The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Hui Cao
- Department of Chemistry, Centre for Theoretical and Computational Chemistry, UiT, The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Ville Weijo
- Department of Chemistry, Centre for Theoretical and Computational Chemistry, UiT, The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Luca Frediani
- Department of Chemistry, Centre for Theoretical and Computational Chemistry, UiT, The Arctic University of Norway, N-9037 Tromsø, Norway
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13
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Rossignol S, Tinel L, Bianco A, Passananti M, Brigante M, Donaldson DJ, George C. Atmospheric photochemistry at a fatty acid-coated air-water interface. Science 2016; 353:699-702. [DOI: 10.1126/science.aaf3617] [Citation(s) in RCA: 102] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Accepted: 06/23/2016] [Indexed: 01/20/2023]
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14
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Marín-Yaseli MR, González-Toril E, Mompeán C, Ruiz-Bermejo M. The Role of Aqueous Aerosols in the “Glyoxylate Scenario”: An Experimental Approach. Chemistry 2016; 22:12785-99. [DOI: 10.1002/chem.201602195] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Margarita R. Marín-Yaseli
- Departamento de Evolución Molecular; Centro de Astrobiología (INTA-CSIC); Ctra. Torrejón-Ajlavir km 4,8 28850 Torrejón de Ardoz Madrid Spain
| | - Elena González-Toril
- Departamento de Evolución Molecular; Centro de Astrobiología (INTA-CSIC); Ctra. Torrejón-Ajlavir km 4,8 28850 Torrejón de Ardoz Madrid Spain
| | - Cristina Mompeán
- Departamento de Evolución Molecular; Centro de Astrobiología (INTA-CSIC); Ctra. Torrejón-Ajlavir km 4,8 28850 Torrejón de Ardoz Madrid Spain
| | - Marta Ruiz-Bermejo
- Departamento de Evolución Molecular; Centro de Astrobiología (INTA-CSIC); Ctra. Torrejón-Ajlavir km 4,8 28850 Torrejón de Ardoz Madrid Spain
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