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Confinement Effects on Glass-Forming Aqueous Dimethyl Sulfoxide Solutions. Molecules 2020; 25:molecules25184127. [PMID: 32917011 PMCID: PMC7570821 DOI: 10.3390/molecules25184127] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 09/04/2020] [Accepted: 09/05/2020] [Indexed: 11/17/2022] Open
Abstract
Combining broadband dielectric spectroscopy and nuclear magnetic resonance studies, we analyze the reorientation dynamics and the translational diffusion associated with the glassy slowdown of the eutectic aqueous dimethyl sulfoxide solution in nano-sized confinements, explicitly, in silica pores with different diameters and in ficoll and lysozyme matrices at different concentrations. We observe that both rotational and diffusive dynamics are slower and more heterogeneous in the confinements than in the bulk but the degree of these effects depends on the properties of the confinement and differs for the components of the solution. For the hard and the soft matrices, the slowdown and the heterogeneity become more prominent when the size of the confinement is reduced. In addition, the dynamics are more retarded for dimethyl sulfoxide than for water, implying specific guest-host interactions. Moreover, we find that the temperature dependence of the reorientation dynamics and of the translational diffusion differs in severe confinements, indicating a breakdown of the Stokes–Einstein–Debye relation. It is discussed to what extent these confinement effects can be rationalized in the framework of core-shell models, which assume bulk-like and slowed-down motions in central and interfacial confinement regions, respectively.
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2
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Fortes AD, Ponsonby J, Kirichek O, García-Sakai V. On the crystal structures and phase transitions of hydrates in the binary dimethyl sulfoxide–water system. ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS 2020; 76:733-748. [DOI: 10.1107/s2052520620008999] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 07/01/2020] [Indexed: 11/10/2022]
Abstract
Neutron powder diffraction data have been collected from a series of flash-frozen aqueous solutions of dimethyl sulfoxide (DMSO) with concentrations between 25 and 66.7 mol% DMSO. These reveal the existence of three stoichiometric hydrates, which crystallize on warming between 175 and 195 K. DMSO trihydrate crystallizes in the monoclinic space group P21/c, with unit-cell parameters at 195 K of a = 10.26619 (3), b = 7.01113 (2), c = 10.06897 (3) Å, β = 101.5030 (2)° and V = 710.183 (3) Å3 (Z = 4). Two of the symmetry-inequivalent water molecules form a sheet of tiled four- and eight-sided rings; the DMSO molecules are sandwiched between these sheets and linked along the b axis by the third water molecule to generate water–DMSO–water tapes. Two different polymorphs of DMSO dihydrate have been identified. The α phase is monoclinic (space group P21/c), with unit-cell parameters at 175 K of a = 6.30304 (4), b = 9.05700 (5), c = 11.22013 (7) Å, β = 105.9691 (4)° and V = 615.802 (4) Å3 (Z = 4). Its structure contains water–DMSO–water chains, but these are polymerized in such a manner as to form sheets of reniform eight-sided rings, with the methyl groups extending on either side of the sheet. On warming above 198 K, α-DMSO·2H2O undergoes a solid-state transformation to a mixture of DMSO·3H2O + anhydrous DMSO, and there is then a stable eutectic between these two phases at ∼203 K. The β-phase of DMSO dihydrate has been observed in a rapidly frozen eutectic melt and in very DMSO-rich mixtures. It is observed to be unstable with respect to the α-phase; above ∼180 K, β-DMSO·2H2O converts irreversibly to α-DMSO·2H2O. At 175 K, the lattice parameters of β-DMSO·2H2O are a = 6.17448 (10), b = 11.61635 (16), c = 8.66530 (12) Å, β = 101.663 (1)° and V = 608.684 (10) Å3 (Z = 4), hence this polymorph is just 1.16% denser than the α-phase under identical conditions. Like the other two hydrates, the space group appears likely, on the basis of systematic absences, to be P21/c, but the structure has not yet been determined. Our results reconcile 60 years of contradictory interpretations of the phase relations in the binary DMSO–water system, particularly between mole fractions of 0.25–0.50, and confirm empirical and theoretical studies of the liquid structure around the eutectic composition (33.33 mol% DMSO).
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Seydel T, Edkins RM, Edkins K. Picosecond self-diffusion in ethanol-water mixtures. Phys Chem Chem Phys 2019; 21:9547-9552. [PMID: 31020975 DOI: 10.1039/c9cp01982k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the self-diffusion in ethanol-water mixtures as a function of the water-ethanol ratio measured at different temperatures using quasi-elastic neutron spectroscopy (QENS). For our protiated samples, QENS is mainly sensitive to the dominant ensemble-averaged incoherent scattering from the hydrogen atoms of the liquid mixtures. The energy range and resolution render our experiment sensitive to the picosecond time scale and nanometer length scale. These observation scales complement different scales accessible by nuclear magnetic resonance techniques. Subsequent to testing different models, we find that a simple jump-diffusion model averaging over both types of molecules, water and ethanol, best fits our data.
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Affiliation(s)
- Tilo Seydel
- Institut Laue-Langevin, 71 Avenue des Martyrs, F-38042 Grenoble, France
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4
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Wei Q, Zhou D, Li X, Chen Y, Bian H. Structural Dynamics of Dimethyl Sulfoxide Aqueous Solutions Investigated by Ultrafast Infrared Spectroscopy: Using Thiocyanate Anion as a Local Vibrational Probe. J Phys Chem B 2018; 122:12131-12138. [DOI: 10.1021/acs.jpcb.8b10058] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Qianshun Wei
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China
| | - Dexia Zhou
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China
| | - Xiaoqian Li
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China
| | - Yuwan Chen
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China
| | - Hongtao Bian
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China
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Zitzmann FD, Jahnke HG, Pfeiffer SA, Frank R, Nitschke F, Mauritz L, Abel B, Belder D, Robitzki AA. Microfluidic Free-Flow Electrophoresis Based Solvent Exchanger for Continuously Operating Lab-on-Chip Applications. Anal Chem 2017; 89:13550-13558. [DOI: 10.1021/acs.analchem.7b03959] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Franziska D. Zitzmann
- Center
for Biotechnology and Biomedicine, Molecular Biological-Biochemical
Processing Technology, Leipzig University, Deutscher Platz 5, D-04103 Leipzig, Germany
| | - Heinz-Georg Jahnke
- Center
for Biotechnology and Biomedicine, Molecular Biological-Biochemical
Processing Technology, Leipzig University, Deutscher Platz 5, D-04103 Leipzig, Germany
| | - Simon A. Pfeiffer
- Institute
of Analytical Chemistry, Leipzig University, Linnéstraße 3, 04103 Leipzig, Germany
| | - Ronny Frank
- Center
for Biotechnology and Biomedicine, Molecular Biological-Biochemical
Processing Technology, Leipzig University, Deutscher Platz 5, D-04103 Leipzig, Germany
| | - Felix Nitschke
- Center
for Biotechnology and Biomedicine, Molecular Biological-Biochemical
Processing Technology, Leipzig University, Deutscher Platz 5, D-04103 Leipzig, Germany
| | - Laura Mauritz
- Institute
of Analytical Chemistry, Leipzig University, Linnéstraße 3, 04103 Leipzig, Germany
| | - Bernd Abel
- Leibniz Institute
of Surface Engineering (IOM), Permoserstrasse
15, 04318 Leipzig, Germany
| | - Detlev Belder
- Institute
of Analytical Chemistry, Leipzig University, Linnéstraße 3, 04103 Leipzig, Germany
| | - Andrea A. Robitzki
- Center
for Biotechnology and Biomedicine, Molecular Biological-Biochemical
Processing Technology, Leipzig University, Deutscher Platz 5, D-04103 Leipzig, Germany
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6
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Hedlund A, Köhnke T, Theliander H. Diffusion in Ionic Liquid–Cellulose Solutions during Coagulation in Water: Mass Transport and Coagulation Rate Measurements. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01594] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Artur Hedlund
- Bio-based
fibers, Swerea IVF, P.O. Box 104, SE-431 22 Mölndal, Sweden
| | - Tobias Köhnke
- Bio-based
fibers, Swerea IVF, P.O. Box 104, SE-431 22 Mölndal, Sweden
| | - Hans Theliander
- Forest
Products and Chemical Engineering, Chalmers University of Engineering, SE-412 96 Göteborg, Sweden
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7
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Sedov IA, Magsumov TI. Molecular dynamics study of unfolding of lysozyme in water and its mixtures with dimethyl sulfoxide. J Mol Graph Model 2017; 76:466-474. [PMID: 28797927 DOI: 10.1016/j.jmgm.2017.07.032] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 07/28/2017] [Accepted: 07/30/2017] [Indexed: 11/17/2022]
Abstract
All-atom explicit solvent molecular dynamics was used to study the process of unfolding of hen egg white lysozyme in water and mixtures of water with dimethyl sulfoxide at different compositions. We have determined the kinetic parameters of unfolding at a constant temperature 450K. For each run, the time of disruption of the tertiary structure of lysozyme tu was defined as the moment when a certain structural criterion computed from the trajectory reaches its critical value. A good agreement is observed between the results obtained using several different criteria. The secondary structure according to DSSP calculations is found to be partially unfolded to the moment of disruption of tertiary structure, but some of its elements keep for a long time after that. The values of tu averaged over ten 30ns-long trajectories for each solvent composition are shown to decrease very rapidly with addition of dimethyl sulfoxide, and rather small amounts of dimethyl sulfoxide are found to change the pathway of unfolding. In pure water, despite the loss of tertiary contacts and disruption of secondary structure elements, the protein preserves its compact globular state at least over 130ns of simulation, while even at 5mol percents of dimethyl sulfoxide it loses its compactness within 30ns. The proposed methodology is a generally applicable tool to quantify the rate of protein unfolding in simulation studies.
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Affiliation(s)
- Igor A Sedov
- Chemical Institute, Kazan Federal University, 420008, Kremlevskaya 18, Kazan, Russia.
| | - Timur I Magsumov
- Chemical Institute, Kazan Federal University, 420008, Kremlevskaya 18, Kazan, Russia
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Fábián B, Idrissi A, Marekha B, Jedlovszky P. Local lateral environment of the molecules at the surface of DMSO-water mixtures. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2016; 28:404002. [PMID: 27506283 DOI: 10.1088/0953-8984/28/40/404002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Molecular dynamics simulations of the liquid-vapour interface of dimethyl sulphoxide (DMSO)-water mixtures of 11 different compositions, including two neat systems are performed on the canonical (N, V, T) ensemble at 298 K. The molecules constituting the surface layer of these systems are selected by means of the identification of the truly interfacial molecules (ITIM) method, and their local lateral environment at the liquid surface is investigated by performing Voronoi analysis. The obtained results reveal that both molecules prefer to be in a mixed local environment, consisting of both kinds of molecules, at the liquid surface, and this preference is even stronger here than in the bulk liquid phase. Neat-like patches, in which a molecule is surrounded by like neighbours, are not found. However, vacancies that are surrounded solely by water molecules are observed at the liquid surface. Our results show that strongly hydrogen bonded DMSO·H2O complexes, known to exist in the bulk phase of these mixtures, are absent from the liquid surface.
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Affiliation(s)
- Balázs Fábián
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Szt. Gellért tér 4, H-1111 Budapest, Hungary. Institut UTINAM (CNRS UMR 6213), Université Bourgogne Franche-Comté, 16 route de Gray, F-25030 Besançon, France
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9
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Mantha S, Yethiraj A. Dynamics of water confined in lyotropic liquid crystals: Molecular dynamics simulations of the dynamic structure factor. J Chem Phys 2016; 144:084504. [DOI: 10.1063/1.4942471] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Affiliation(s)
- Sriteja Mantha
- Theoretical Chemistry Institute and Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
| | - Arun Yethiraj
- Theoretical Chemistry Institute and Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
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Idrissi A, Marekha B, Kiselev M, Jedlovszky P. The local environment of the molecules in water–DMSO mixtures, as seen from computer simulations and Voronoi polyhedra analysis. Phys Chem Chem Phys 2015; 17:3470-81. [DOI: 10.1039/c4cp04839c] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The local structure of DMSO–water mixtures is studied by computer simulation and Voronoi analysis.
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Affiliation(s)
- Abdenacer Idrissi
- Laboratoire de Spectrochimie Infrarouge et Raman (UMR CNRS A8516)
- Université Lille 1
- Science et Technologies
- 59655 Villeneuve d'Ascq Cedex
- France
| | - B. Marekha
- Laboratoire de Spectrochimie Infrarouge et Raman (UMR CNRS A8516)
- Université Lille 1
- Science et Technologies
- 59655 Villeneuve d'Ascq Cedex
- France
| | - M. Kiselev
- Institute of Solution Chemistry of the Russian Academy of Sciences
- 153045 Ivanovo
- Russia
| | - Pál Jedlovszky
- Laboratory of Interfaces and Nanosize Systems
- Institute of Chemistry
- Eötvös Loránd University
- H-1117 Budapest
- Hungary
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11
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Jie Q, Guo-Zhu J. Dielectric constant of polyhydric alcohol-DMSO mixture solution at the microwave frequency. J Phys Chem A 2013; 117:12983-9. [PMID: 24245484 DOI: 10.1021/jp4082245] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Dielectric spectrum of polyhydric alcohol (1,2,3)-DMSO (dimethyl sulfoxide) mixtures, at full concentration, have been determined by the dielectric relaxation spectroscopy (DRS) method at frequencies from 20 MHz to 20 GHz at room temperature. The mixture behavior is described according to four Davidson-Cole terms whose evolution with composition is analyzed. The binding energies and hydrogen bond (HB) numbers between solute-solute and solvent-solute pairs are obtained from the permittivity using the Luzar model. The average HBs number associated with DMSO decreases with increasing mole fraction of DMSO. The binding energy of solute-solute (E11) and solvent-solute (E12) interaction decreases with the increased numbers of carbon atoms in the alcohols.
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Affiliation(s)
- Qian Jie
- College of Physics and Electronics Engineering, Sichuan Normal University , Chengdu 610066, China
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12
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Yu X, Chen G, Zhang S. A model for predicting the permeation of dimethyl sulfoxide into articular cartilage, and its application to the liquidus-tracking method. Cryobiology 2013; 67:332-8. [PMID: 24125912 DOI: 10.1016/j.cryobiol.2013.09.168] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 08/29/2013] [Accepted: 09/30/2013] [Indexed: 10/26/2022]
Abstract
Long-term storage of articular cartilage (AC) has excited great interest due to the practical surgical significance of this tissue. The liquidus-tracking (LT) method developed by Pegg et al. (2006) [29] for vitreous preservation of AC achieved reasonable survival of post-warming chondrocytes in situ, but the design of the entire procedure was more dependent on trial and error. Mathematical modeling would help to better understand the LT process, and thereby make possible improvements to attain higher cell survival. Mass transfer plays a dominant role in the LT process. In the present study, a diffusion model based on the free-volume theory and the Flory-Huggins thermodynamics theory was developed to predict the permeation of dimethyl sulfoxide (Me2SO) into AC. A comparison between the predicted mean concentration of Me2SO in the AC disc and the experimental data over wide temperature and concentration ranges [-30 to 37 °C, 10 to 64.5% (w/w)] shows that the developed model can accurately describe the permeation of Me2SO into AC [coefficient of determination (R(2)): 0.951-1.000, mean relative error (MRE): 0.8-12.8%]. With this model, the spatial and temporal distribution of Me2SO in the AC disc during a loading/unloading process can be obtained. Application of the model to Pegg et al.'s LT procedure revealed that the liquidus line is virtually not followed for the center part of the AC disc. The presently developed model will be a useful tool in the analysis and design of the LT method for vitreous preservation of AC.
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Affiliation(s)
- Xiaoyi Yu
- Institute of Refrigeration and Cryogenics, Zhejiang University, Hangzhou 310027, China.
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13
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Chowdhuri S, Pattanayak SK. Pressure dependence on the single-particle dynamics and hydrogen-bond structural relaxation of water–DMSO mixtures under ambient and cold conditions. Mol Phys 2012. [DOI: 10.1080/00268976.2012.707692] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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14
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Liu X, Vlugt TJH, Bardow A. Maxwell–Stefan Diffusivities in Binary Mixtures of Ionic Liquids with Dimethyl Sulfoxide (DMSO) and H2O. J Phys Chem B 2011; 115:8506-17. [DOI: 10.1021/jp203026c] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xin Liu
- Lehrstuhl für Technische Thermodynamik, RWTH Aachen University, Schinkelstrasse 8, 52062 Aachen, Germany
- Process & Energy Laboratory, Delft University of Technology, Leeghwaterstraat 44, 2628 CA Delft, The Netherlands
| | - Thijs J. H. Vlugt
- Process & Energy Laboratory, Delft University of Technology, Leeghwaterstraat 44, 2628 CA Delft, The Netherlands
| | - André Bardow
- Lehrstuhl für Technische Thermodynamik, RWTH Aachen University, Schinkelstrasse 8, 52062 Aachen, Germany
- Process & Energy Laboratory, Delft University of Technology, Leeghwaterstraat 44, 2628 CA Delft, The Netherlands
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15
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Roy S, Banerjee S, Biyani N, Jana B, Bagchi B. Theoretical and Computational Analysis of Static and Dynamic Anomalies in Water−DMSO Binary Mixture at Low DMSO Concentrations. J Phys Chem B 2010; 115:685-92. [DOI: 10.1021/jp109622h] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Susmita Roy
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India
| | - Saikat Banerjee
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India
| | - Nikhil Biyani
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India
| | - Biman Jana
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India
| | - Biman Bagchi
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India
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16
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Swenson J, Sjöström J, Fernandez-Alonso F. Reduced mobility of di-propylene glycol methylether in its aqueous mixtures by quasielastic neutron scattering. J Chem Phys 2010; 133:234506. [PMID: 21186874 DOI: 10.1063/1.3515958] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The hydrogen (H-) bonding interplay between water and other organic molecules is important both in nature and in a wide range of technological applications. Structural relaxation and, thus, diffusion in aqueous mixtures are generally dependent on both the strength and the structure of the H-bonds. To investigate diffusion in H-bonding mixtures, we present a quasielastic neutron scattering study of di-propylene glycol methylether (2PGME) mixed with H(2)O (or D(2)O) over the concentration range 0-90 wt.% water. We observe a nonmonotonic behavior of the dynamics with a maximum in average relaxation time for the mixture with 30 wt.% water, which is more than a factor 2 larger compared to that of either of the pure constituents. This is a result in qualitative agreement with previous calorimetric studies and the behavior of aqueous mixtures of simple mono-alcohols. More surprisingly, we notice that the dynamics of the 2PGME molecules in the mixture is slowed down by more than a factor 3 at 30 wt.% water but that the water dynamics indicates an almost monotonous behavior. Furthermore, in the low momentum transfer (Q) range of the 2PGME, where the intermediate scattering function I(Q,t) is considerably stretched in time (i.e., the stretching parameter β ≪ 1), it is evident for the 2PGME-D(2)O samples that the Q-dependence of the inverse average relaxation time, <τ>(-1), is greater than 2. This implies that the relaxation dynamics is partly homogenously stretched, i.e., the relaxation of each relaxing unit is somewhat intrinsically stretched in time.
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Affiliation(s)
- Jan Swenson
- Department of Applied Physics, Chalmers University of Technology, SE-41296 Göteborg, Sweden
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17
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Bordallo HN, Aldridge LP. Concrete and Cement Paste Studied by Quasi-Elastic Neutron Scattering. ACTA ACUST UNITED AC 2010. [DOI: 10.1524/zpch.2010.6098] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Abstract
In a world where the effects of climate change on weather patterns is accepted as real and serious, the problem of decreasing the production of carbon dioxide is perceived as increasingly important. The cement industry produces 5–7% of the world’s carbon dioxide emission and its survival will depend on improvements in the production of concrete which will be both more durable and require less carbon dioxide per unit of manufacture than the currently produced concrete. The durability of concrete is related to its ability to limit fluid transmission and knowledge of how to reduce the rate at which water will be transmitted through cement paste is critical to improving durability. However, because of the complex chemical and physical nature of cement pastes, understanding water mobility is a great challenge. Many techniques are not applicable simply because they are not sensitive to the range of size from angstroms to microns and the extent of water interaction with the cement where water can either be chemically bound at hydroxyls or physically free in large pores. In this review paper, we present the most up to date results on the physical chemistry of the water/ cement paste interactions studied by quasi-elastic neutron scattering. These results bring new insight to the mobility of water in the gel pores, the small pores (radius less than 50Å) that control the rate of water transmission in the cement pastes from which high quality concrete will be made.
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19
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Antoniou E, Buitrago CF, Tsianou M, Alexandridis P. Solvent effects on polysaccharide conformation. Carbohydr Polym 2010. [DOI: 10.1016/j.carbpol.2009.08.019] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Bordallo HN, Aldridge LP, Fouquet P, Pardo LC, Unruh T, Wuttke J, Yokaichiya F. Hindered water motions in hardened cement pastes investigated over broad time and length scales. ACS APPLIED MATERIALS & INTERFACES 2009; 1:2154-2162. [PMID: 20355849 DOI: 10.1021/am900332n] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
We investigated the dynamics of confined water in different hydrated cement pastes with minimized contributions of capillary water. It was found that the water motions are extremely reduced compared to those of bulk water. The onset of water mobility, which was modified by the local environment, was investigated with elastic temperature scans using the high-resolution neutron backscattering instrument SPHERES. Using a Cauchy-Lorenz distribution, the quasi-elastic signal observed in the spectra obtained by the backscattering spectrometer was analyzed, leading to the identification of rotational motions with relaxation times of 0.3 ns. Additionally, neutron spin echo (NSE) spectroscopy was used to measure the water diffusion over the local network of pores. The motions observed in the NSE time scale were characterized by diffusion constants ranging from 0.6 to 1.1 x 10(-9) m(2) s(-1) most likely related to water molecules removed from the interface. In summary, our results indicate that the local diffusion observed in the gel pores of hardened cement pastes is on the order of that found in deeply supercooled water. Finally, the importance of the magnetic properties of cement pastes were discussed in relation to the observation of a quasi-elastic signal on the dried sample spectra measured using the time-of-flight spectrometer.
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Affiliation(s)
- Heloisa N Bordallo
- Helmholtz-Zentrum Berlin fur Materialien und Energie GmbH, Glienicker Strasse 100, D-14109 Berlin, Germany.
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Loksztejn A, Dzwolak W. Noncooperative dimethyl sulfoxide-induced dissection of insulin fibrils: toward soluble building blocks of amyloid. Biochemistry 2009; 48:4846-51. [PMID: 19385641 DOI: 10.1021/bi900394b] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The enormous molecular weight complicates detailed structural studies of amyloid fibrils and obscures identification of biologically active forms of protein aggregates in amyloid-related diseases. Here we show that aqueous solutions of dimethyl sulfoxide (DMSO) solubilize insulin fibrils while maintaining their beta-pleated structure. This is accompanied by a marked decrease in the fluorescence of thioflavin T. According to atomic force microscopy images and dynamic light scattering measurements, the partial DMSO-induced dissection of insulin fibrils favors formation of smaller soluble oligomers, which retain a limited capacity to induce daughter generation of fibrils through seeding to the native insulin, as well as the ability to reassemble into fibrils upon removal of DMSO through dialysis against water. These findings suggest that the DMSO-induced ensembles of insulin molecules are closely related to elementary building blocks of amyloid fibrils.
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Affiliation(s)
- Anna Loksztejn
- Department of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
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Laage D. Reinterpretation of the Liquid Water Quasi-Elastic Neutron Scattering Spectra Based on a Nondiffusive Jump Reorientation Mechanism. J Phys Chem B 2009; 113:2684-7. [DOI: 10.1021/jp900307n] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Damien Laage
- Ecole Normale Supérieure, Département de Chimie, 24 rue Lhomond, F-75005 Paris, France, CNRS, UMR 8640 PASTEUR, 24 rue Lhomond, F-75005 Paris, France
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23
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Dynamics of water in LiCl and CaCl2 aqueous solutions confined in silica matrices: A backscattering neutron spectroscopy study. Chem Phys 2008. [DOI: 10.1016/j.chemphys.2008.05.019] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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24
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Demontis P, Gulín-González J, Jobic H, Masia M, Sale R, Suffritti GB. Dynamical properties of confined water nanoclusters: Simulation study of hydrated zeolite NaA: structural and vibrational properties. ACS NANO 2008; 2:1603-1614. [PMID: 19206362 DOI: 10.1021/nn800303r] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Water nanoclusters confined to zeolitic cavities have been extensively investigated by various experimental techniques. We report a series of molecular dynamics simulations at different temperatures and for water nanoclusters of different sizes in order to attempt an atomistic interpretation of the properties of these systems. The cavities of zeolite NaA are spherical in shape and about 1 nm in diameter and can host nanoclusters of water containing nearly up to 24 water molecules. A modified interaction potential, yielding a better reproduction of experimental hydration energy and water diffusivity across a number of different zeolites, is proposed. Molecular dynamics simulations reproduce the known experimental structural features obtained by X-ray diffraction. Variations of simulated vibrational IR and IINS spectra with temperature and size of nanoclusters are in good agreement with experiment. The simulated water nanoclusters in zeolite NaA are found to be too small to crystallize and, at low temperature, behave as amorphous ice, in agreement with recent experimental results for similar water nanoclusters in reverse micelles.
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Jalarvo N, Bordallo HN, Aliouane N, Adams MA, Pieper J, Argyriou DN. Dynamics of Water in NaxCoO2·yH2O. J Phys Chem B 2007; 112:703-9. [DOI: 10.1021/jp074398y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Niina Jalarvo
- Hahn-Meitner Institut, Glienicker Strasse 100, 14109 Berlin, Germany, Institut Laue Langevin, B.P. 156, 38042 Grenoble, Cedex 9, France, ISIS Pulsed Neutron Scattering Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, OX11 0QX, U.K., and Technische Universität Berlin, Institut für Chemie, Max-Volmer-Laboratorium für Biophysikalische Chemie, Strasse des 17. Juni 135 10623 Berlin, Germany
| | - Heloisa N. Bordallo
- Hahn-Meitner Institut, Glienicker Strasse 100, 14109 Berlin, Germany, Institut Laue Langevin, B.P. 156, 38042 Grenoble, Cedex 9, France, ISIS Pulsed Neutron Scattering Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, OX11 0QX, U.K., and Technische Universität Berlin, Institut für Chemie, Max-Volmer-Laboratorium für Biophysikalische Chemie, Strasse des 17. Juni 135 10623 Berlin, Germany
| | - Nadir Aliouane
- Hahn-Meitner Institut, Glienicker Strasse 100, 14109 Berlin, Germany, Institut Laue Langevin, B.P. 156, 38042 Grenoble, Cedex 9, France, ISIS Pulsed Neutron Scattering Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, OX11 0QX, U.K., and Technische Universität Berlin, Institut für Chemie, Max-Volmer-Laboratorium für Biophysikalische Chemie, Strasse des 17. Juni 135 10623 Berlin, Germany
| | - Mark A. Adams
- Hahn-Meitner Institut, Glienicker Strasse 100, 14109 Berlin, Germany, Institut Laue Langevin, B.P. 156, 38042 Grenoble, Cedex 9, France, ISIS Pulsed Neutron Scattering Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, OX11 0QX, U.K., and Technische Universität Berlin, Institut für Chemie, Max-Volmer-Laboratorium für Biophysikalische Chemie, Strasse des 17. Juni 135 10623 Berlin, Germany
| | - Jörg Pieper
- Hahn-Meitner Institut, Glienicker Strasse 100, 14109 Berlin, Germany, Institut Laue Langevin, B.P. 156, 38042 Grenoble, Cedex 9, France, ISIS Pulsed Neutron Scattering Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, OX11 0QX, U.K., and Technische Universität Berlin, Institut für Chemie, Max-Volmer-Laboratorium für Biophysikalische Chemie, Strasse des 17. Juni 135 10623 Berlin, Germany
| | - Dimitri N. Argyriou
- Hahn-Meitner Institut, Glienicker Strasse 100, 14109 Berlin, Germany, Institut Laue Langevin, B.P. 156, 38042 Grenoble, Cedex 9, France, ISIS Pulsed Neutron Scattering Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, OX11 0QX, U.K., and Technische Universität Berlin, Institut für Chemie, Max-Volmer-Laboratorium für Biophysikalische Chemie, Strasse des 17. Juni 135 10623 Berlin, Germany
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26
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Harpham MR, Levinger NE, Ladanyi BM. An investigation of water dynamics in binary mixtures of water and dimethyl sulfoxide. J Phys Chem B 2007; 112:283-93. [PMID: 18052269 DOI: 10.1021/jp074985j] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The motion of water molecules in mixtures of water and d6-dimethyl sulfoxide (DMSO) has been explored through molecular dynamics (MD) simulations using the SPC/E water model (J. Chem. Phys. 1987, 91, 6269) and the P2 DMSO model (J. Chem. Phys. 1993, 98, 8160). We evaluate the self-intermediate scattering functions, FS(Q,t), which are related by a Fourier transform to the incoherent structure factors, S(Q,omega), measured in quasielastic neutron scattering (QNS) experiments. We compare our results to recent QNS experiments on these mixtures reported by Bordallo et al. (J. Chem. Phys. 2004, 121, 12457). In addition to comparing the MD data to the experimental signals, which correspond to a convolution of S(Q,omega) with a resolution function, we examine the rotational and translational components of FS(Q,t) and investigate to what extent simulation results for the single-molecule dynamics follow the dynamical models that are used in the analysis of the experimental data. We find that the agreement between the experimental signal and the MD data is quite good and that the portion of FS(Q,t) due to translational dynamics is well represented by the jump-diffusion model. The model parameters and their composition dependence are in reasonable agreement with experiment, exhibiting similar trends in water mobility with composition. Specifically, we find that water motion is less hindered in water-rich and water-poor mixtures than it is near equimolar composition. We find that the extent of coupling between rotational and translational motion contributing to FS(Q,t) increases as the equimolar composition of the mixture is approached. Thus, the decoupling approximation, which is used to extract information on rotational relaxation from QNS spectra at higher momentum transfer (Q) values, becomes less accurate than that in water-rich or DMSO-rich mixtures. We also find that rotational relaxation deviates quite strongly from the isotropic rotational diffusion model. We explore this issue further by investigating the behavior of orientational time correlations for different unit vectors and corresponding to Legendre polynomials of orders 1-4. We find that the rotational time correlations of water molecules behave in a way that is more consistent with the extended jump rotation model recently proposed by Laage and Hynes (Science 2006, 311, 832).
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Affiliation(s)
- Michael R Harpham
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, USA
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Sando GM, Dahl K, Owrutsky JC. Vibrational Spectroscopy and Dynamics of Azide Ion in Ionic Liquid and Dimethyl Sulfoxide Water Mixtures. J Phys Chem B 2007; 111:4901-9. [PMID: 17388412 DOI: 10.1021/jp067143d] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Steady-state and time-resolved infrared spectroscopy of the azide (N(3)-) anion has been used to characterize aqueous mixtures both with the ionic liquid (IL) 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM][BF(4)]) and with dimethyl sulfoxide (DMSO). In the DMSO-water mixtures, two anion vibrational bands are observed for low water mole fractions (0 > X(w) > 0.25), which indicates a heterogeneous ion solvation environment. The band at 2000 cm(-1) observed for neat DMSO does not shift but decreases in amplitude as the amount of water is increased. Another band appears at slightly higher frequency at low X(w) (=0.05). As the amount of water is increased, this band shifts to higher frequency and becomes stronger and is attributed to azide with an increasing degree of hydration. At intermediate and high X(w), a single band is observed that shifts almost linearly with water mole fraction toward the bulk water value. The heterogeneity is evident from the infrared pump-probe studies in which the decay times depend on probe frequency at low mole fraction. For the azide spectra in IL-water mixtures, a single azide band is observed for each mole fraction mixture. The azide band shifts almost linearly with mole fraction, indicating nearly ideal mixing behavior. As with the DMSO-water mixtures, the time-resolved IR decay times are probe-frequency-dependent at low mole fraction, again indicating heterogeneous solvation. In both the DMSO and IL mixtures with water, the relaxation times are slower than would be expected from ideal mixing, suggesting that vibrational relaxation of azide is more sensitive than its vibrational frequency to the solvent structure. The results are discussed in terms of preferential solvation and the degree to which the azide shift and vibrational relaxation depend on the degree of water association in the mixtures.
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Affiliation(s)
- Gerald M Sando
- U.S. Naval Research Laboratory, Washington, District of Columbia 20375-5342, USA
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Malardier-Jugroot C, Head-Gordon T. Separable cooperative and localized translational motions of water confined by a chemically heterogeneous environment. Phys Chem Chem Phys 2007; 9:1962-71. [PMID: 17431524 DOI: 10.1039/b616997j] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report quasi-elastic neutron scattering experiments at two resolutions that probe timescales of picoseconds to nanoseconds for the hydration dynamics of water, confined in a concentrated solution of N-acetyl-leucine-methylamide (NALMA) peptides in water over a temperature range of 248 K to 288 K. The two QENS resolutions used allow for a clean separation of two observable translational components, and ultimately two very different relaxation processes, that become evident when analyzed under a combination of the jump diffusion model and the relaxation cage model. The first translational motion is a localized beta-relaxation process of the bound surface water, and exhibits an Arrhenius temperature dependence and a large activation energy of approximately 8 kcal mol(-1). The second non-Arrhenius translational component is a dynamical signature of the alpha-relaxation of more fluid water, exhibiting a glass transition temperature of approximately 116 K when fit to the Volger Fulcher Tamman functional form. These peptide solutions provide a novel experimental system for examining confinement in order to understand the dynamical transition in bulk supercooled water by removing the unwanted interface of the confining material on water dynamics.
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29
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Magazù S, Migliardo F, Telling MTF. Study of the dynamical properties of water in disaccharide solutions. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2006; 36:163-71. [PMID: 17109123 DOI: 10.1007/s00249-006-0108-0] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2006] [Revised: 09/22/2006] [Accepted: 10/10/2006] [Indexed: 10/23/2022]
Abstract
This work presents quasi-elastic neutron scattering (QENS) and neutron spin echo (NSE) findings on homologous disaccharide (i.e. trehalose, maltose and sucrose)/water solutions as a function of temperature. The dynamical properties of these systems are investigated by QENS, which, on the picosecond scale, allows for the characterisation of the diffusion of both solutes and solvent. On the other hand, NSE investigates the dynamics on the nanosecond scale, allowing for the relaxation times of the disaccharide/water systems to be evaluated. The experimental data highlight a strong slowing down of water in the presence of disaccharides. The whole set of findings indicates, therefore, a noticeable disaccharide-water interaction, which is more intense in the case of trehalose. This feature can justify its higher bioprotective effectiveness.
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Affiliation(s)
- S Magazù
- Dipartimento di Fisica, Università di Messina, PO Box 55, S.ta Sperone C.da Papardo, 98166 Messina, Italy.
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