1
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Guo J, Jiang Y. Submolecular Insights into Interfacial Water by Hydrogen-Sensitive Scanning Probe Microscopy. Acc Chem Res 2022; 55:1680-1692. [PMID: 35678704 DOI: 10.1021/acs.accounts.2c00111] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
ConspectusWater-solid interfaces have attracted extensive attention because of their crucial roles in a wide range of chemical and physical processes, such as ice nucleation and growth, dissolution, corrosion, heterogeneous catalysis, and electrochemistry. To understand these processes, enormous efforts have been made to obtain a molecular-level understanding of the structure and dynamics of water on various solid surfaces. By the use of scanning probe microscopy (SPM), many remarkable structures of H-bonding networks have been directly visualized, significantly advancing our understanding of the delicate competition between water-water and water-solid interactions. Moreover, the detailed dynamics of water molecules, such as diffusion, clustering, dissociation, and intermolecular and intramolecular proton transfer, have been investigated in a well-controlled manner by tip manipulation. However, resolving the submolecular structure of surface water has remained a great challenge for a long time because of the small size and light mass of protons. Discerning the position of hydrogen in water is not only crucial for the accurate determination of the structure of H-bonding networks but also indispensable in probing the proton transfer dynamics and the quantum nature of protons.In this Account, we focus on the recent advances in the H-sensitive SPM technique and its applications in probing the structures, dynamics, and nuclear quantum effects (NQEs) of surface water and ion hydrates at the submolecular level. First, we introduce the development of high-resolution scanning tunneling microscopy/spectroscopy (STM/S) and qPlus-based atomic force microscopy (qPlus-AFM), which allow access to the degrees of freedom of protons in both real and energy space. qPlus-AFM even allows imaging of interfacial water in a weakly perturbative manner by measuring the high-order electrostatic force between the CO-terminated tip and the polar water molecule, which enables the subtle difference of OH directionality to be discerned. Next we showcase the applications of H-sensitive STM/AFM in addressing several key issues related to water-solid interfaces. The surface wetting behavior and the H-bonding structure of low-dimensional ice on various hydrophilic and hydrophobic solid surfaces are characterized at the atomic scale. Then we discuss the quantitative assessment of NQEs of surface water, including proton tunneling and quantum delocalization. Moreover, the weakly perturbative and H-sensitive SPM technique can be also extended to investigations of water-ion interactions on solid surfaces, revealing the effect of hydration structure on the interfacial ion transport. Finally, we provide an outlook on the further directions and challenges for SPM studies of water-solid interfaces.
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Affiliation(s)
- Jing Guo
- College of Chemistry, Beijing Normal University, Beijing 100875, People's Republic of China
| | - Ying Jiang
- International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, People's Republic of China.,Collaborative Innovation Center of Quantum Matter, Beijing 100871, People's Republic of China.,Interdisciplinary Institute of Light-Element Quantum Materials and Research Center for Light-Element Advanced Materials, Peking University, Beijing 100871, People's Republic of China.,CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing 100190, People's Republic of China
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2
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Artemov VG, Ryzhov A, Carlsen E, Kapralov PO, Ouerdane H. Nonrotational Mechanism of Polarization in Alcohols. J Phys Chem B 2020; 124:11022-11029. [PMID: 33225700 DOI: 10.1021/acs.jpcb.0c09380] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Chemical polarity governs various mechanical, chemical, and thermodynamic properties of dielectrics. Polar liquids have been amply studied, yet the basic mechanisms underpinning their dielectric properties remain not fully understood, as standard models following Debye's phenomenological approach do not account for quantum effects and cannot aptly reproduce the full dc-up-to-THz spectral range. Here, using the illustrative case of monohydric alcohols, we show that deep tunneling and the consequent intermolecular separation of excess protons and "proton-holes" in the polar liquids govern their static and dynamic dielectric properties on the same footing. We performed systematic ultrabroadband (0-10 THz) spectroscopy experiments with monohydric alcohols of different (0.4-1.6 nm) molecular lengths and show that the finite lifetime of molecular species and the proton-hole correlation length are the two principle parameters responsible for the dielectric response of all the studied alcohols across the entire frequency range. Our results demonstrate that a quantum nonrotational intermolecular mechanism drives the polarization in alcohols while the rotational mechanism of molecular polarization plays a secondary role, manifesting itself in the sub-terahertz region only.
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Affiliation(s)
- Vasily G Artemov
- Center for Energy Science and Technology, Skolkovo Institute of Science and Technology, 121205 Moscow, Russia
| | - Alexander Ryzhov
- Center for Energy Science and Technology, Skolkovo Institute of Science and Technology, 121205 Moscow, Russia
| | - Emma Carlsen
- Department of Chemistry and Biochemistry, Brigham Young University, 84602 Provo, Utah, United States
| | | | - Henni Ouerdane
- Center for Energy Science and Technology, Skolkovo Institute of Science and Technology, 121205 Moscow, Russia
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3
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Bocedi A, Romanelli G, Andreani C, Senesi R. Hydrogen nuclear mean kinetic energy in water down the Mariana Trench: Competition of pressure and salinity. J Chem Phys 2020; 153:134306. [PMID: 33032407 DOI: 10.1063/5.0021926] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The Mariana Trench is one of the most famous and extreme environments on our planet. We report experimental values of the hydrogen nuclear mean kinetic energy in water samples at the same physical and chemical conditions than in the Challenger Deep within the Mariana Trench: a pressure of 1092 bars, a temperature of 1 °C, and a salinity of 35 g of salt per kg of water. Results were obtained by deep inelastic neutron scattering at the VESUVIO spectrometer at ISIS. We find that the effect of pressure is to increase the hydrogen nuclear mean kinetic energy with respect to ambient conditions, while ions in the solution have the opposite effect. These results confirm the recent state-of-the-art simulations of the nuclear hydrogen dynamics in water. The changes in the nuclear mean kinetic energy likely correspond to different isotopic fractionation values in the Challenger Deep compared to standard sea water.
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Affiliation(s)
- Alessio Bocedi
- Università degli Studi di Roma "Tor Vergata", Dipartimento di Scienze e Tecnologie Chimiche, Via della Ricerca Scientifica 1, Rome 00133, Italy
| | - Giovanni Romanelli
- ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11OQX, United Kingdom
| | - Carla Andreani
- Università degli Studi di Roma "Tor Vergata", Dipartimento di Fisica and NAST Center, Via della Ricerca Scientifica 1, Rome 00133, Italy
| | - Roberto Senesi
- Università degli Studi di Roma "Tor Vergata", Dipartimento di Fisica and NAST Center, Via della Ricerca Scientifica 1, Rome 00133, Italy
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4
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Moid M, Finkelstein Y, Moreh R, Maiti PK. Microscopic Study of Proton Kinetic Energy Anomaly for Nanoconfined Water. J Phys Chem B 2019; 124:190-198. [DOI: 10.1021/acs.jpcb.9b08667] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mohd Moid
- Centre for Condensed Matter Theory, Department of Physics, Indian Institute of Science, Bangalore 560012, India
| | | | - Raymond Moreh
- Physics Department, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Prabal K. Maiti
- Centre for Condensed Matter Theory, Department of Physics, Indian Institute of Science, Bangalore 560012, India
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5
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Kapil V, Cuzzocrea A, Ceriotti M. Anisotropy of the Proton Momentum Distribution in Water. J Phys Chem B 2018; 122:6048-6054. [DOI: 10.1021/acs.jpcb.8b03896] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Venkat Kapil
- Laboratory of Computational Science and Modelling, Institute of Materials, Ecole Polytechnique Fédérale de Lausanne, Lausanne 1015, Switzerland
| | - Alice Cuzzocrea
- Laboratory of Computational Science and Modelling, Institute of Materials, Ecole Polytechnique Fédérale de Lausanne, Lausanne 1015, Switzerland
| | - Michele Ceriotti
- Laboratory of Computational Science and Modelling, Institute of Materials, Ecole Polytechnique Fédérale de Lausanne, Lausanne 1015, Switzerland
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6
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Olsen RJ, Gillespie AK, Contescu CI, Taylor JW, Pfeifer P, Morris JR. Phase Transition of H 2 in Subnanometer Pores Observed at 75 K. ACS NANO 2017; 11:11617-11631. [PMID: 29083871 DOI: 10.1021/acsnano.7b06640] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Here we report a phase transition in H2 adsorbed in a locally graphitic Saran carbon with subnanometer pores 0.5-0.65 nm in width, in which two layers of hydrogen can just barely squeeze, provided they pack tightly. The phase transition is observed at 75 K, temperatures far higher than other systems in which an adsorbent is known to increase phase transition temperatures: for instance, H2 melts at 14 K in the bulk, but at 20 K on graphite because the solid H2 is stabilized by the surface structure. Here we observe a transition at 75 K and 77-200 bar: from a low-temperature, low-density phase to a high-temperature, higher density phase. We model the low-density phase as a monolayer commensurate solid composed mostly of para-H2 (the ground nuclear spin state, S = 0) and the high-density phase as an orientationally ordered bilayer commensurate solid composed mostly of ortho-H2 (S = 1). We attribute the increase in density with temperature to the fact that the oblong ortho-H2 can pack more densely. The transition is observed using two experiments. The high-density phase is associated with an increase in neutron backscatter by a factor of 7.0 ± 0.1. Normally, hydrogen produces no backscatter (scattering angle >90°). This backscatter appears along with a discontinuous increase in the excitation mass from 1.2 amu to 21.0 ± 2.3 amu, which we associate with collective nuclear spin excitations in the orientationally ordered phase. Film densities were measured using hydrogen adsorption. No phase transition was observed in H2 adsorbed in control activated carbon materials.
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Affiliation(s)
- Raina J Olsen
- Materials Science and Technology Division, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States
| | - Andrew K Gillespie
- Department of Physics and Astronomy, University of Missouri , Columbia, Missouri 65211, United States
| | - Cristian I Contescu
- Materials Science and Technology Division, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States
| | - Jonathan W Taylor
- ISIS Spallation Neutron Source, STFC, Rutherford Appleton Laboratory , Didcot OX11 0QX, United Kingdom
| | - Peter Pfeifer
- Department of Physics and Astronomy, University of Missouri , Columbia, Missouri 65211, United States
| | - James R Morris
- Materials Science and Technology Division, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States
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7
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Novikov VN, Sokolov AP. Quantum effects in dynamics of water and other liquids of light molecules. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2017; 40:57. [PMID: 28510231 DOI: 10.1140/epje/i2017-11546-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2017] [Accepted: 05/04/2017] [Indexed: 06/07/2023]
Abstract
Nuclear quantum effects in atomic motions are well known at low temperatures [Formula: see text] K, but analyses of structural relaxation in liquids and description of the glass transition traditionally neglect quantum effects at higher temperatures, [Formula: see text] K. Recent studies, however, suggested that nuclear quantum effects in systems of light molecules (e.g., water) might play an important role in structural dynamics and provide non-negligible contributions at such temperatures, and even up to ambient temperature. In this article, we discuss experimental evidences of the quantum effects in glass transition in liquids of light molecules and possible theoretical descriptions of these effects. We show that quantum effects may qualitatively change the temperature behavior of the structural relaxation time in supercooled liquids leading to deviations of some well-established properties of the glass transition when it happens at low temperatures. We also demonstrate that unusual behavior of water dynamics at low temperatures, including apparent fragile-to-strong crossover, can be ascribed to nuclear quantum effects.
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Affiliation(s)
- V N Novikov
- Department of Chemistry, University of Tennessee, 37996, Knoxville, TN, USA.
- Shull Wollan Center - Joint-Institute for Neutron Sciences, Oak Ridge National Laboratory and University of Tennessee, 37831, Oak Ridge, TN, USA.
- Institute of Automation and Electrometry, Russian Academy of Sciences, 630090, Novosibirsk, Russia.
| | - A P Sokolov
- Department of Chemistry, University of Tennessee, 37996, Knoxville, TN, USA
- Shull Wollan Center - Joint-Institute for Neutron Sciences, Oak Ridge National Laboratory and University of Tennessee, 37831, Oak Ridge, TN, USA
- Chemical Sciences Division, Oak Ridge National Laboratory, 37831, Oak Ridge, TN, USA
- Department of Physics and Astronomy, University of Tennessee, 37996, Knoxville, TN, USA
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8
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Schooneveld EM, Pietropaolo A, Andreani C, Perelli Cippo E, Rhodes NJ, Senesi R, Tardocchi M, Gorini G. Radiative neutron capture as a counting technique at pulsed spallation neutron sources: a review of current progress. REPORTS ON PROGRESS IN PHYSICS. PHYSICAL SOCIETY (GREAT BRITAIN) 2016; 79:094301. [PMID: 27502571 DOI: 10.1088/0034-4885/79/9/094301] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Neutron scattering techniques are attracting an increasing interest from scientists in various research fields, ranging from physics and chemistry to biology and archaeometry. The success of these neutron scattering applications is stimulated by the development of higher performance instrumentation. The development of new techniques and concepts, including radiative capture based neutron detection, is therefore a key issue to be addressed. Radiative capture based neutron detectors utilize the emission of prompt gamma rays after neutron absorption in a suitable isotope and the detection of those gammas by a photon counter. They can be used as simple counters in the thermal region and (simultaneously) as energy selector and counters for neutrons in the eV energy region. Several years of extensive development have made eV neutron spectrometers operating in the so-called resonance detector spectrometer (RDS) configuration outperform their conventional counterparts. In fact, the VESUVIO spectrometer, a flagship instrument at ISIS serving a continuous user programme for eV inelastic neutron spectroscopy measurements, is operating in the RDS configuration since 2007. In this review, we discuss the physical mechanism underlying the RDS configuration and the development of associated instrumentation. A few successful neutron scattering experiments that utilize the radiative capture counting techniques will be presented together with the potential of this technique for thermal neutron diffraction measurements. We also outline possible improvements and future perspectives for radiative capture based neutron detectors in neutron scattering application at pulsed neutron sources.
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Affiliation(s)
- E M Schooneveld
- Science and Technology Facilities Council, Didcot, Oxfordshire, UK
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9
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Andreani C, Romanelli G, Senesi R. Direct Measurements of Quantum Kinetic Energy Tensor in Stable and Metastable Water near the Triple Point: An Experimental Benchmark. J Phys Chem Lett 2016; 7:2216-2220. [PMID: 27214268 DOI: 10.1021/acs.jpclett.6b00926] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
This study presents the first direct and quantitative measurement of the nuclear momentum distribution anisotropy and the quantum kinetic energy tensor in stable and metastable (supercooled) water near its triple point, using deep inelastic neutron scattering (DINS). From the experimental spectra, accurate line shapes of the hydrogen momentum distributions are derived using an anisotropic Gaussian and a model-independent framework. The experimental results, benchmarked with those obtained for the solid phase, provide the state of the art directional values of the hydrogen mean kinetic energy in metastable water. The determinations of the direction kinetic energies in the supercooled phase, provide accurate and quantitative measurements of these dynamical observables in metastable and stable phases, that is, key insight in the physical mechanisms of the hydrogen quantum state in both disordered and polycrystalline systems. The remarkable findings of this study establish novel insight into further expand the capacity and accuracy of DINS investigations of the nuclear quantum effects in water and represent reference experimental values for theoretical investigations.
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Affiliation(s)
- Carla Andreani
- Università degli Studi di Roma "Tor Vergata" , Dipartimento di Fisica e Centro NAST, Via della Ricerca Scientifica 1, 00133 Roma, Italy
- Consiglio Nazionale delle Ricerche, CNR-IPCF, Sezione di Messina 98122, Italy
| | - Giovanni Romanelli
- ISIS Neutron Source, Science Technology Facility Council, Chilton, Oxfordshire OX11 0QX, United Kingdom
| | - Roberto Senesi
- Università degli Studi di Roma "Tor Vergata" , Dipartimento di Fisica e Centro NAST, Via della Ricerca Scientifica 1, 00133 Roma, Italy
- Consiglio Nazionale delle Ricerche, CNR-IPCF, Sezione di Messina 98122, Italy
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10
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Cheng B, Behler J, Ceriotti M. Nuclear Quantum Effects in Water at the Triple Point: Using Theory as a Link Between Experiments. J Phys Chem Lett 2016; 7:2210-2215. [PMID: 27203358 DOI: 10.1021/acs.jpclett.6b00729] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
One of the most prominent consequences of the quantum nature of light atomic nuclei is that their kinetic energy does not follow a Maxwell-Boltzmann distribution. Deep inelastic neutron scattering (DINS) experiments can measure this effect. Thus, the nuclear quantum kinetic energy can be probed directly in both ordered and disordered samples. However, the relation between the quantum kinetic energy and the atomic environment is a very indirect one, and cross-validation with theoretical modeling is therefore urgently needed. Here, we use state of the art path integral molecular dynamics techniques to compute the kinetic energy of hydrogen and oxygen nuclei in liquid, solid, and gas-phase water close to the triple point, comparing three different interatomic potentials and validating our results against equilibrium isotope fractionation measurements. We will then show how accurate simulations can draw a link between extremely precise fractionation experiments and DINS, therefore establishing a reliable benchmark for future measurements and providing key insights to increase further the accuracy of interatomic potentials for water.
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Affiliation(s)
- Bingqing Cheng
- Laboratory of Computational Science and Modelling, Institute of Materials, Ecole Polytechnique Fédérale de Lausanne , 1015 Lausanne, Switzerland
| | - Jörg Behler
- Lehrstuhl für Theoretische Chemie, Ruhr-Universität Bochum , 44801 Bochum, Germany
| | - Michele Ceriotti
- Laboratory of Computational Science and Modelling, Institute of Materials, Ecole Polytechnique Fédérale de Lausanne , 1015 Lausanne, Switzerland
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11
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Affiliation(s)
- Y. Finkelstein
- Chemistry Department, Nuclear Research Center - Negev, Beer-Sheva 84190, Israel
| | - R. Moreh
- Physics Department, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
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12
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Guo J, Lü JT, Feng Y, Chen J, Peng J, Lin Z, Meng X, Wang Z, Li XZ, Wang EG, Jiang Y. Nuclear quantum effects of hydrogen bonds probed by tip-enhanced inelastic electron tunneling. Science 2016; 352:321-5. [PMID: 27081066 DOI: 10.1126/science.aaf2042] [Citation(s) in RCA: 106] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Accepted: 03/14/2016] [Indexed: 01/28/2023]
Abstract
We report the quantitative assessment of nuclear quantum effects on the strength of a single hydrogen bond formed at a water-salt interface, using tip-enhanced inelastic electron tunneling spectroscopy based on a scanning tunneling microscope. The inelastic scattering cross section was resonantly enhanced by "gating" the frontier orbitals of water via a chlorine-terminated tip, so the hydrogen-bonding strength can be determined with high accuracy from the red shift in the oxygen-hydrogen stretching frequency of water. Isotopic substitution experiments combined with quantum simulations reveal that the anharmonic quantum fluctuations of hydrogen nuclei weaken the weak hydrogen bonds and strengthen the relatively strong ones. However, this trend can be completely reversed when a hydrogen bond is strongly coupled to the polar atomic sites of the surface.
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Affiliation(s)
- Jing Guo
- International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, P. R. China
| | - Jing-Tao Lü
- School of Physics and Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
| | - Yexin Feng
- International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, P. R. China. School of Physics and Electronics, Hunan University, Changsha 410082, P. R. China
| | - Ji Chen
- International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, P. R. China
| | - Jinbo Peng
- International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, P. R. China
| | - Zeren Lin
- International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, P. R. China
| | - Xiangzhi Meng
- International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, P. R. China
| | - Zhichang Wang
- International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, P. R. China
| | - Xin-Zheng Li
- School of Physics, Peking University, Beijing 100871, P. R. China. Collaborative Innovation Center of Quantum Matter, Beijing 100871, P. R. China.
| | - En-Ge Wang
- International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, P. R. China. Collaborative Innovation Center of Quantum Matter, Beijing 100871, P. R. China.
| | - Ying Jiang
- International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, P. R. China. Collaborative Innovation Center of Quantum Matter, Beijing 100871, P. R. China.
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13
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Ceriotti M, Fang W, Kusalik PG, McKenzie RH, Michaelides A, Morales MA, Markland TE. Nuclear Quantum Effects in Water and Aqueous Systems: Experiment, Theory, and Current Challenges. Chem Rev 2016; 116:7529-50. [DOI: 10.1021/acs.chemrev.5b00674] [Citation(s) in RCA: 339] [Impact Index Per Article: 42.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Michele Ceriotti
- Laboratory
of Computational Science and Modeling, Institute of Materials, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Wei Fang
- Thomas
Young Centre, London Centre for Nanotechnology and Department of Physics
and Astronomy, University College London, London WC1E 6BT, United Kingdom
| | - Peter G. Kusalik
- Department
of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Ross H. McKenzie
- School
of Mathematics and Physics, University of Queensland, Brisbane, 4072 Queensland Australia
| | - Angelos Michaelides
- Thomas
Young Centre, London Centre for Nanotechnology and Department of Physics
and Astronomy, University College London, London WC1E 6BT, United Kingdom
| | - Miguel A. Morales
- Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Thomas E. Markland
- Department
of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305, United States
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14
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Lehmkühler F, Forov Y, Büning T, Sahle CJ, Steinke I, Julius K, Buslaps T, Tolan M, Hakala M, Sternemann C. Intramolecular structure and energetics in supercooled water down to 255 K. Phys Chem Chem Phys 2016; 18:6925-30. [PMID: 26881494 DOI: 10.1039/c5cp07721d] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
We studied the structure and energetics of supercooled water by means of X-ray Raman and Compton scattering. Under supercooled conditions down to 255 K, the oxygen K-edge measured by X-ray Raman scattering suggests an increase of tetrahedral order similar to the conventional temperature effect observed in non-supercooled water. Compton profile differences indicate contributions beyond the theoretically predicted temperature effect and provide a deeper insight into local structural changes. These contributions suggest a decrease of the electron mean kinetic energy by 3.3 ± 0.7 kJ (mol K)(-1) that cannot be modeled within established water models. Our surprising results emphasize the need for water models that capture in detail the intramolecular structural changes and quantum effects to explain this complex liquid.
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Affiliation(s)
- Felix Lehmkühler
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany.
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15
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Finkelstein Y, Moreh R, Shang SL, Shchur Y, Wang Y, Liu ZK. On the mean kinetic energy of the proton in strong hydrogen bonded systems. J Chem Phys 2016; 144:054302. [PMID: 26851916 DOI: 10.1063/1.4940730] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
The mean atomic kinetic energies of the proton, Ke(H), and of the deuteron, Ke(D), were calculated in moderate and strongly hydrogen bonded (HB) systems, such as the ferro-electric crystals of the KDP type (XH2PO4, X = K, Cs, Rb, Tl), the DKDP (XD2PO4, X = K, Cs, Rb) type, and the X3H(SO4)2 superprotonic conductors (X = K, Rb). All calculations utilized the simulated partial phonon density of states, deduced from density functional theory based first-principle calculations and from empirical lattice dynamics simulations in which the Coulomb, short range, covalent, and van der Waals interactions were accounted for. The presently calculated Ke(H) values for the two systems were found to be in excellent agreement with published values obtained by deep inelastic neutron scattering measurements carried out using the VESUVIO instrument of the Rutherford Laboratory, UK. The Ke(H) values of the M3H(SO4)2 compounds, in which the hydrogen bonds are centro-symmetric, are much lower than those of the KDP type crystals, in direct consistency with the oxygen-oxygen distance ROO, being a measure of the HB strength.
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Affiliation(s)
- Y Finkelstein
- Nuclear Research Center-Negev, Beer-Sheva 84190, Israel
| | - R Moreh
- Physics Department, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - S L Shang
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Ya Shchur
- Institute for Condensed Matter Physics, 1 Svientsitskii str., L'viv 79011, Ukraine
| | - Y Wang
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Z K Liu
- Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
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16
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Romanelli G, Senesi R, Zhang X, Loh KP, Andreani C. Probing the effects of 2D confinement on hydrogen dynamics in water and ice adsorbed in graphene oxide sponges. Phys Chem Chem Phys 2015; 17:31680-4. [PMID: 26556604 DOI: 10.1039/c5cp05240h] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
We studied the single particle dynamics of water and ice adsorbed in graphene oxide (GO) sponges at T = 293 K and T = 20 K. We used Deep Inelastic Neutron Scattering (DINS) at the ISIS neutron and muon spallation source to derive the hydrogen mean kinetic energy, 〈EK〉, and momentum distribution, n(p). The goal of this work was to study the hydrogen dynamics under 2D confinement and the potential energy surface, fingerprinting the hydrogen interaction with the layered structure of the GO sponge. The observed scattering is interpreted within the framework of the impulse approximation. Samples of both water and ice adsorbed in GO show n(p) functions with almost harmonic and anisotropic line shapes and 〈EK〉 values in excess of the values found at the corresponding temperatures in the bulk. The hydrogen dynamics are discussed in the context of the interaction between the interfacial water and ice and the confining hydrophilic surface of the GO sponge.
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Affiliation(s)
- Giovanni Romanelli
- Università degli Studi di Roma "Tor Vergata", Dipartimento di Fisica and Centro NAST, Via della Ricerca Scientifica 1, 00133 Roma, Italy
| | - Roberto Senesi
- Università degli Studi di Roma "Tor Vergata", Dipartimento di Fisica and Centro NAST, Via della Ricerca Scientifica 1, 00133 Roma, Italy and Consiglio Nazionale delle Ricerche, CNR-IPCF, Sezione di Messina, Italy
| | - Xuan Zhang
- Graphene Research Centre and Centre for Advanced 2D Materials, Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Kian Ping Loh
- Graphene Research Centre and Centre for Advanced 2D Materials, Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
| | - Carla Andreani
- Università degli Studi di Roma "Tor Vergata", Dipartimento di Fisica and Centro NAST, Via della Ricerca Scientifica 1, 00133 Roma, Italy
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17
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Agapov AL, Kolesnikov AI, Novikov VN, Richert R, Sokolov AP. Quantum effects in the dynamics of deeply supercooled water. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2015; 91:022312. [PMID: 25768510 DOI: 10.1103/physreve.91.022312] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Indexed: 06/04/2023]
Abstract
Despite its simple chemical structure, water remains one of the most puzzling liquids with many anomalies at low temperatures. Combining neutron scattering and dielectric relaxation spectroscopy, we show that quantum fluctuations are not negligible in deeply supercooled water. Our dielectric measurements reveal the anomalously weak temperature dependence of structural relaxation in vapor-deposited water close to the glass transition temperature T(g)∼136K. We demonstrate that this anomalous behavior can be explained well by quantum effects. These results have significant implications for our understanding of water dynamics.
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Affiliation(s)
- A L Agapov
- Department of Chemistry and Joint Institute for Neutron Sciences, University of Tennessee, Knoxville, Tennessee 37996, USA
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - A I Kolesnikov
- Chemical and Engineering Materials Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - V N Novikov
- Department of Chemistry and Joint Institute for Neutron Sciences, University of Tennessee, Knoxville, Tennessee 37996, USA
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - R Richert
- Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287, USA
| | - A P Sokolov
- Department of Chemistry and Joint Institute for Neutron Sciences, University of Tennessee, Knoxville, Tennessee 37996, USA
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
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18
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Romanelli G, Fernandez-Alonso F, Andreani C. The Harmonic Picture of Nuclear Mean Kinetic Energies in Heavy Water. ACTA ACUST UNITED AC 2014. [DOI: 10.1088/1742-6596/571/1/012003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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19
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Walewski Ł, Forbert H, Marx D. Solvation of molecules in superfluid helium enhances the “interaction induced localization” effect. J Chem Phys 2014; 140:144305. [DOI: 10.1063/1.4870595] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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20
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Finkelstein Y, Moreh R. Temperature dependence of the proton kinetic energy in water between 5 and 673K. Chem Phys 2014. [DOI: 10.1016/j.chemphys.2014.01.004] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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21
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Kreck CA, Mancera RL. Characterization of the Glass Transition of Water Predicted by Molecular Dynamics Simulations Using Nonpolarizable Intermolecular Potentials. J Phys Chem B 2014; 118:1867-80. [DOI: 10.1021/jp411716y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Cara A. Kreck
- School of Biomedical Sciences,
CHIRI Biosciences, Curtin University, GPO Box U1987, Perth, Western
Australia 6845, Australia
| | - Ricardo L. Mancera
- School of Biomedical Sciences,
CHIRI Biosciences, Curtin University, GPO Box U1987, Perth, Western
Australia 6845, Australia
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22
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Senesi R, Romanelli G, Adams M, Andreani C. Temperature dependence of the zero point kinetic energy in ice and water above room temperature. Chem Phys 2013. [DOI: 10.1016/j.chemphys.2013.09.010] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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23
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Andreani C, Romanelli G, Senesi R. A combined INS and DINS study of proton quantum dynamics of ice and water across the triple point and in the supercritical phase. Chem Phys 2013. [DOI: 10.1016/j.chemphys.2013.07.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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24
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Senesi R, Flammini D, Kolesnikov AI, Murray ÉD, Galli G, Andreani C. The quantum nature of the OH stretching mode in ice and water probed by neutron scattering experiments. J Chem Phys 2013; 139:074504. [DOI: 10.1063/1.4818494] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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25
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Finkelstein Y, Moreh R. Proton dynamics in ice VII at high pressures. J Chem Phys 2013; 139:044716. [DOI: 10.1063/1.4816630] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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26
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Vos M, Weigold E, Moreh R. Elastic electron scattering from water vapor and ice at high momentum transfer. J Chem Phys 2013; 138:044307. [DOI: 10.1063/1.4775810] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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27
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Price DL, Fernandez-Alonso F. An Introduction to Neutron Scattering. EXPERIMENTAL METHODS IN THE PHYSICAL SCIENCES 2013. [DOI: 10.1016/b978-0-12-398374-9.00001-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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28
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Pietropaolo A, Colognesi D, Catti M, Nale AC, Adams MA, Ramirez-Cuesta AJ, Mayers J. Proton vibrational dynamics in lithium imide investigated through incoherent inelastic and Compton neutron scattering. J Chem Phys 2012. [PMID: 23206005 DOI: 10.1063/1.4767566] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
In the present study we report neutron spectroscopic measurements on polycrystalline lithium imide, namely, incoherent inelastic neutron scattering at 20 K, and neutron Compton scattering from 10 K up to room temperature. From the former technique the H-projected density of phonon states up to 100 meV is derived, while the latter works out the spherically averaged single-particle (i.e., H, Li, and N) momentum distributions and, from this, the mean kinetic energies. Only for H at the lowest investigated temperature, non-gaussian components of its momentum distribution are detected. However, these components do not seem directly connected to the system anharmonicity, being fully compatible with the simple N-H bond anisotropy. Neutron data are also complemented by ab initio lattice dynamics simulations, both harmonic and, at room temperature, carried out in the framework of the so-called "quantum colored noise thermostat" method. The single-particle mean kinetic energies in lithium imide as a function of temperature show a quite peculiar behavior at the moment not reproduced by ab initio lattice dynamics methods, at least as far as H and Li are concerned. As matter of fact, neither their low temperature values nor their temperature trends can be precisely explained in terms of standard phonon calculations.
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Affiliation(s)
- A Pietropaolo
- Dipartimento di Fisica G. Occhialini, Università degli Studi di Milano-Bicocca, Piazza della Scienza 3, 20126 Milan, Italy
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29
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Bruni F, Giuliani A, Mayers J, Ricci MA. Proton Momentum Distribution and Diffusion Coefficient in Water: Two Sides of the Same Coin? J Phys Chem Lett 2012; 3:2594-2597. [PMID: 26295880 DOI: 10.1021/jz3010305] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Water, the prototype of a liquid to ordinary people, is the most anomalous liquid to physicists, showing regions of the temperature-density (T,ρ) plane where its microscopic structure, diffusion coefficient, and density have anomalous behaviors. Structural anomalies occur over a broad bell-shaped T,ρ region. This region contains, as a matryoshka, two smaller regions, one delimiting dynamical and the other delimiting thermodynamic anomalies. Water anomalous behavior in each of these regions manifests itself as a decrease of order or an increase of the diffusion coefficient upon increasing pressure and as a decrease of density upon cooling. Here, we show that the radial momentum distribution of water protons and their mean kinetic energy have a peculiar, theoretically unpredicted anomaly in the region of dynamical anomalies. This anomaly can be rationalized as due to two distinct "families" of water protons, experiencing quite distinct local environments, leading to an enhancement of the momentum fluctuations along with an increase of kinetic energy.
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Affiliation(s)
- F Bruni
- †Dipartimento di Fisica "E. Amaldi", Università degli Studi "Roma Tre", Via della Vasca Navale 84, 00146 Roma, Italy
| | - A Giuliani
- †Dipartimento di Fisica "E. Amaldi", Università degli Studi "Roma Tre", Via della Vasca Navale 84, 00146 Roma, Italy
| | - J Mayers
- ‡STFC, Rutherford Appleton Laboratory, ISIS Facility, Didcot, Oxfordshire OX11 0QX, United Kingdom
| | - M A Ricci
- †Dipartimento di Fisica "E. Amaldi", Università degli Studi "Roma Tre", Via della Vasca Navale 84, 00146 Roma, Italy
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30
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Engel H, Doron D, Kohen A, Major DT. Momentum Distribution as a Fingerprint of Quantum Delocalization in Enzymatic Reactions: Open-Chain Path-Integral Simulations of Model Systems and the Hydride Transfer in Dihydrofolate Reductase. J Chem Theory Comput 2012; 8:1223-34. [DOI: 10.1021/ct200874q] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hamutal Engel
- Department of Chemistry and
the Lise Meitner−Minerva Center of Computational Quantum Chemistry,
Bar-Ilan University, Ramat-Gan 52900, Israel
| | - Dvir Doron
- Department of Chemistry and
the Lise Meitner−Minerva Center of Computational Quantum Chemistry,
Bar-Ilan University, Ramat-Gan 52900, Israel
| | - Amnon Kohen
- Department of Chemistry, University
of Iowa, Iowa City, Iowa 52242, United States
| | - Dan Thomas Major
- Department of Chemistry and
the Lise Meitner−Minerva Center of Computational Quantum Chemistry,
Bar-Ilan University, Ramat-Gan 52900, Israel
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31
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32
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Flammini D, Pietropaolo A, Senesi R, Andreani C, McBride F, Hodgson A, Adams MA, Lin L, Car R. Spherical momentum distribution of the protons in hexagonal ice from modeling of inelastic neutron scattering data. J Chem Phys 2012; 136:024504. [DOI: 10.1063/1.3675838] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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33
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Andreani C, Colognesi D, Pietropaolo A, Senesi R. Ground state proton dynamics in stable phases of water. Chem Phys Lett 2011. [DOI: 10.1016/j.cplett.2011.09.036] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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34
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Paesani F. Hydrogen bond dynamics in heavy water studied with quantum dynamical simulations. Phys Chem Chem Phys 2011; 13:19865-75. [PMID: 21892511 DOI: 10.1039/c1cp21863h] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The structure and dynamics of the hydrogen-bond network in heavy water (D(2)O) is studied as a function of the temperature using quantum dynamical simulations. Our approach combines an ab initio-based representation of the water interactions with an explicit quantum treatment of the molecular motion. A direct connection between the calculated linear and nonlinear vibrational spectra and the underlying molecular dynamics is made, which provides new insights into the rearrangement of the hydrogen-bond network in heavy water. A comparison with previous calculations on liquid H(2)O suggests that tunneling does not effectively contribute to the dynamics of the water hydrogen-bond network above the melting point. However, the effects of nuclear quantization are not negligible at all temperatures and become increasingly important near the melting point, which is in agreement with recent experimental analysis of the structural properties of liquid water as well as of the proton momentum distribution in supercooled water.
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Affiliation(s)
- Francesco Paesani
- Department of Chemistry and Biochemistry, University of California, La Jolla, San Diego, CA 92093, USA.
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35
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Giuliani A, Bruni F, Ricci MA, Adams MA. Isotope quantum effects on the water proton mean kinetic energy. PHYSICAL REVIEW LETTERS 2011; 106:255502. [PMID: 21770653 DOI: 10.1103/physrevlett.106.255502] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2011] [Indexed: 05/31/2023]
Abstract
A deep inelastic neutron scattering experiment, performed on D(2)O in the stable and metastable liquid phases, provides evidence for isotope quantum effects in the proton or deuteron single particle dynamics along the hydrogen bond. The deuteron mean kinetic energy extracted from the experimental data in the metastable supercooled phase (T = 276.15 K) exceeds the zero point energy and scales as sqrt[2] with that of protons in supercooled light water, at T = 269.15 K. The present data support the suggestion that even small changes in the short range environment of a deuteron or proton have a strong influence on its quantum behavior.
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Affiliation(s)
- A Giuliani
- Dipartimento di Fisica E Amaldi, Università degli Studi Roma Tre, Via della Vasca Navale 84, 00146 Roma, Italy
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36
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Seel AG, Sartbaeva A, Mayers J, Ramirez-Cuesta AJ, Edwards PP. Neutron Compton scattering investigation of sodium hydride: From bulk material to encapsulated nanoparticulates in amorphous silica gel. J Chem Phys 2011; 134:114511. [DOI: 10.1063/1.3561493] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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37
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Pantalei C, Senesi R, Andreani C, Sozzani P, Comotti A, Bracco S, Beretta M, Sokol PE, Reiter G. Interaction of single water molecules with silanols in mesoporous silica. Phys Chem Chem Phys 2011; 13:6022-8. [DOI: 10.1039/c0cp02479a] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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38
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Lin L, Morrone JA, Car R, Parrinello M. Displaced path integral formulation for the momentum distribution of quantum particles. PHYSICAL REVIEW LETTERS 2010; 105:110602. [PMID: 20867559 DOI: 10.1103/physrevlett.105.110602] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2010] [Revised: 06/05/2010] [Indexed: 05/29/2023]
Abstract
The proton momentum distribution, accessible by deep inelastic neutron scattering, is a very sensitive probe of the potential of mean force experienced by the protons in hydrogen-bonded systems. In this work we introduce a novel estimator for the end-to-end distribution of the Feynman paths, i.e., the Fourier transform of the momentum distribution. In this formulation, free particle and environmental contributions factorize. Moreover, the environmental contribution has a natural analogy to a free energy surface in statistical mechanics, facilitating the interpretation of experiments. The new formulation is not only conceptually but also computationally advantageous. We illustrate the method with applications to an empirical water model, ab initio ice, and one dimensional model systems.
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Affiliation(s)
- Lin Lin
- Program in Applied and Computational Mathematics, Princeton University, Princeton, New Jersey 08544, USA
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39
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Moreh R, Nemirovsky D. On the proton kinetic energy in H2O and in nanotube water. J Chem Phys 2010; 133:084506. [DOI: 10.1063/1.3478681] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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40
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Soper AK. Comment on "Excess of proton mean kinetic energy in supercooled water". PHYSICAL REVIEW LETTERS 2009; 103:069801-069802. [PMID: 19792618 DOI: 10.1103/physrevlett.103.069801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2009] [Indexed: 05/28/2023]
Affiliation(s)
- A K Soper
- ISIS Facility, STFC Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Didcot, Oxon, OX11 0QX, United Kingdom
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41
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Flammini D, Ricci MA, Bruni F. A new water anomaly: The temperature dependence of the proton mean kinetic energy. J Chem Phys 2009; 130:236101. [DOI: 10.1063/1.3142700] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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42
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Morrone JA, Lin L, Car R. Tunneling and delocalization effects in hydrogen bonded systems: A study in position and momentum space. J Chem Phys 2009; 130:204511. [DOI: 10.1063/1.3142828] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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43
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Ricci MA, Bruni F, Giuliani A. “Similarities” between confined and supercooled water. Faraday Discuss 2009; 141:347-58; discussion 443-65. [DOI: 10.1039/b805706k] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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