1
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Milovanović MR, Zarić SD. New Aspects of Alcohol-Alcohol and Alcohol-Water Interactions: Crystallographic and Quantum Chemical Studies of Antiparallel O-H/O-H Interactions. J Phys Chem Lett 2024; 15:1294-1304. [PMID: 38284997 DOI: 10.1021/acs.jpclett.3c03399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2024]
Abstract
New modes of interaction, antiparallel O-H/O-H interactions of alcohol-alcohol dimers and alcohol-water dimers, were studied by analyzing data in the Cambridge Structural Database (CSD) and by calculating potential energy surfaces at a very accurate quantum chemical CCSD(T)/CBS level. The data reveal the existence of antiparallel interactions in crystal structures and significant interaction energies. Data from the CSD for alcohol-alcohol dimers show 49.2% of contacts with classical hydrogen bonds and 10.1% of contacts with antiparallel interactions, while for alcohol-water dimers, 59.4% of contacts are classical hydrogen bonds and only 0.6% of contacts are antiparallel interactions. The calculations were performed on methanol, ethanol, and n-propanol dimers. Classical hydrogen-bonded alcohol-alcohol and alcohol-water dimers have interaction energies of up to -6.2 kcal/mol and up to -5.5 kcal/mol, respectively. Antiparallel interactions in alcohol-alcohol and alcohol-water dimers have interaction energies of up to -4.7 kcal/mol and up to -4.4 kcal/mol, respectively. Symmetry-adapted perturbation theory analysis for antiparallel interactions shows their electrostatic nature.
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Affiliation(s)
- Milan R Milovanović
- Innovative Centre of the Faculty of Chemistry, Studentski trg 12-16, Belgrade 11000, Serbia
| | - Snežana D Zarić
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade 11000, Serbia
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2
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Nagasaka M. Carbon K-edge x-ray absorption spectra of liquid alcohols from quantum chemical calculations of liquid structures obtained by molecular dynamics simulations. J Chem Phys 2023; 158:024501. [PMID: 36641387 DOI: 10.1063/5.0131017] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
For reproducing the carbon K-edge x-ray absorption spectra of liquid alcohols, inner-shell quantum chemical calculations based on the Hartree-Fock method were performed with the snapshots of the liquid structures obtained by molecular dynamics simulations. The C K-edge inner-shell spectrum of liquid ethanol (EtOH) was obtained by the summation of one thousand calculated spectra of EtOH molecules including neighbor EtOH molecules within the CH2-CH2 distance of 6 Å. For the C K-edge inner-shell spectrum of liquid methanol (MeOH), we have calculated one thousand spectra of MeOH molecules including neighbor MeOH molecules within the CH3-CH3 distance of 6 Å. The calculated C K-edge inner-shell spectra of liquid alcohols well reproduced the spectral shapes of the experimentally obtained x-ray absorption spectra and the spectral changes from gas to liquid phases.
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Affiliation(s)
- Masanari Nagasaka
- Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan and SOKENDAI (The Graduate University for Advanced Studies), Myodaiji, Okazaki 444-8585, Japan
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3
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Ma Q, Gao R, Liu Y, Dou H, Zheng Y, Or T, Yang L, Li Q, Cu Q, Feng R, Zhang Z, Nie Y, Ren B, Luo D, Wang X, Yu A, Chen Z. Regulation of Outer Solvation Shell Toward Superior Low-Temperature Aqueous Zinc-Ion Batteries. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2207344. [PMID: 36177699 DOI: 10.1002/adma.202207344] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 09/19/2022] [Indexed: 06/16/2023]
Abstract
Aqueous Zn-ion batteries are well regarded among a next-generation energy-storage technology due to their low cost and high safety. However, the unstable stripping/plating process leading to severe dendrite growth under high current density and low temperature impede their practical application. Herein, it is demonstrated that the addition of 2-propanol can regulate the outer solvation shell structure of Zn2+ by replacing water molecules to establish a "eutectic solvation shell", which provides strong affinity with the Zn (101) crystalline plane and fast desolvation kinetics during the plating process, rendering homogeneous Zn deposition without dendrite formation. As a result, the Zn anode exhibits promising cycle stability over 500 h under an elevated current density of 15 mA cm-2 and high depth of discharge of 51.2%. Furthermore, remarkable electrochemical performance is achieved in a 150 mAh Zn|V2 O5 pouch cell over 1000 cycles at low temperature of -20 °C. This work not only offers a new strategy to achieve excellent performance of aqueous Zn-ion batteries under harsh conditions, but also reveals electrolyte structure designs that can be applied in related energy storage and conversion fields.
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Affiliation(s)
- Qianyi Ma
- Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, ON, N2L 3G1, Canada
| | - Rui Gao
- Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, ON, N2L 3G1, Canada
| | - Yizhou Liu
- South China Academy of Advanced Optoelectronics, School of Information and Optoelectronic Science and Engineering & International Academy of Optoelectronics at Zhaoqing, South China Normal University, Guangzhou, 510006, China
| | - Haozhen Dou
- Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, ON, N2L 3G1, Canada
| | - Yun Zheng
- Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, ON, N2L 3G1, Canada
| | - Tyler Or
- Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, ON, N2L 3G1, Canada
| | - Leixin Yang
- South China Academy of Advanced Optoelectronics, School of Information and Optoelectronic Science and Engineering & International Academy of Optoelectronics at Zhaoqing, South China Normal University, Guangzhou, 510006, China
| | - Qingying Li
- South China Academy of Advanced Optoelectronics, School of Information and Optoelectronic Science and Engineering & International Academy of Optoelectronics at Zhaoqing, South China Normal University, Guangzhou, 510006, China
| | - Qiao Cu
- South China Academy of Advanced Optoelectronics, School of Information and Optoelectronic Science and Engineering & International Academy of Optoelectronics at Zhaoqing, South China Normal University, Guangzhou, 510006, China
| | - Renfei Feng
- Canadian Light Source, Saskatoon, S7N 2V3, Canada
| | - Zhen Zhang
- Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, ON, N2L 3G1, Canada
| | - Yihang Nie
- South China Academy of Advanced Optoelectronics, School of Information and Optoelectronic Science and Engineering & International Academy of Optoelectronics at Zhaoqing, South China Normal University, Guangzhou, 510006, China
| | - Bohua Ren
- Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, ON, N2L 3G1, Canada
| | - Dan Luo
- Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, ON, N2L 3G1, Canada
- South China Academy of Advanced Optoelectronics, School of Information and Optoelectronic Science and Engineering & International Academy of Optoelectronics at Zhaoqing, South China Normal University, Guangzhou, 510006, China
| | - Xin Wang
- South China Academy of Advanced Optoelectronics, School of Information and Optoelectronic Science and Engineering & International Academy of Optoelectronics at Zhaoqing, South China Normal University, Guangzhou, 510006, China
| | - Aiping Yu
- Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, ON, N2L 3G1, Canada
| | - Zhongwei Chen
- Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, ON, N2L 3G1, Canada
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4
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Nagasaka M, Bouvier M, Yuzawa H, Kosugi N. Hydrophobic Cluster Formation in Aqueous Ethanol Solutions Probed by Soft X-ray Absorption Spectroscopy. J Phys Chem B 2022; 126:4948-4955. [PMID: 35748647 DOI: 10.1021/acs.jpcb.2c02990] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Hydrophobic cluster structures in aqueous ethanol solutions at different concentrations have been investigated by soft X-ray absorption spectroscopy (XAS). In the O K-edge XAS, we have found that hydrogen bond structures among water molecules are enhanced in the middle-concentration region by the hydrophobic interaction of the ethyl groups in ethanol. In the C K-edge XAS, the lower energy features arise from a transition from the terminal methyl C 1s electron to an unoccupied orbital of 3s Rydberg character, which is sensitive to the nearest-neighbor intermolecular interactions. From the comparison of C K-edge XAS with the inner-shell calculations, we have found that ethanol clusters are easily formed in the middle-concentration region due to the hydrophobic interaction of the ethyl group in ethanol, resulting in the enhancement of the hydrogen bond structures among water molecules. This behavior is different from aqueous methanol solutions, where the methanol-water mixed clusters are more predominant in the middle-concentration region due to the relatively weak hydrophobic interactions of the methyl group in methanol.
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Affiliation(s)
- Masanari Nagasaka
- Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Myodaiji, Okazaki 444-8585, Japan
| | - Mathilde Bouvier
- Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan
| | - Hayato Yuzawa
- Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan
| | - Nobuhiro Kosugi
- Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan.,SOKENDAI (The Graduate University for Advanced Studies), Myodaiji, Okazaki 444-8585, Japan
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5
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Sahle CJ, de Clermont Gallerande E, Niskanen J, Longo A, Elbers M, Schroer MA, Sternemann C, Jahn S. Hydration in aqueous NaCl. Phys Chem Chem Phys 2022; 24:16075-16084. [PMID: 35735165 DOI: 10.1039/d2cp00162d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Atomistic details about the hydration of ions in aqueous solutions are still debated due to the disordered and statistical nature of the hydration process. However, many processes from biology, physical chemistry to materials sciences rely on the complex interplay between solute and solvent. Oxygen K-edge X-ray excitation spectra provide a sensitive probe of the local atomic and electronic surrounding of the excited sites. We used ab initio molecular dynamics simulations together with extensive spectrum calculations to relate the features found in experimental oxygen K-edge spectra of a concentration series of aqueous NaCl with the induced structural changes upon solvation of the salt and distill the spectral fingerprints of the first hydration shells around the Na+- and Cl--ions. By this combined experimental and theoretical approach, we find the strongest spectral changes to indeed result from the first hydration shells of both ions and relate the observed shift of spectral weight from the post- to the main-edge to the origin of the post-edge as a shape resonance.
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Affiliation(s)
- Christoph J Sahle
- ESRF, The European Synchrotron, 71 Avenue des Martyrs, CS40220, FR-38043 Grenoble Cedex 9, France.
| | | | - Johannes Niskanen
- Department of Physics and Astronomy, University of Turku, FI-20014 Turun Yliopisto, Finland
| | - Alessandro Longo
- ESRF, The European Synchrotron, 71 Avenue des Martyrs, CS40220, FR-38043 Grenoble Cedex 9, France.
| | - Mirko Elbers
- Fakultät Physik/DELTA, Technische Universität Dortmund, D-44221 Dortmund, Germany
| | - Martin A Schroer
- Nanoparticle Process Technology, University of Duisburg-Essen, D-47057 Duisburg, Germany
| | - Christian Sternemann
- Fakultät Physik/DELTA, Technische Universität Dortmund, D-44221 Dortmund, Germany
| | - Sandro Jahn
- Institute of Geology and Mineralogy, University of Cologne, D-50674 Köln, Germany
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6
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Georgiou R, Sahle CJ, Sokaras D, Bernard S, Bergmann U, Rueff JP, Bertrand L. X-ray Raman Scattering: A Hard X-ray Probe of Complex Organic Systems. Chem Rev 2022; 122:12977-13005. [PMID: 35737888 DOI: 10.1021/acs.chemrev.1c00953] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This paper provides a review of the characterization of organic systems via X-ray Raman scattering (XRS) and a step-by-step guidance for its application. We present the fundamentals of XRS required to use the technique and discuss the main parameters of the experimental set-ups to optimize spectral and spatial resolution while maximizing signal-to-background ratio. We review applications that target the analysis of mixtures of organic compounds, the identification of minor spectral features, and the spatial discrimination in heterogeneous systems. We discuss the recent development of the direct tomography technique, which utilizes the XRS process as a contrast mechanism for assessing the three-dimensional spatially resolved carbon chemistry of complex organic materials. We conclude by exposing the current limitations and provide an outlook on how to overcome some of the existing challenges and advance future developments and applications of this powerful technique for complex organic systems.
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Affiliation(s)
- Rafaella Georgiou
- Université Paris-Saclay, CNRS, Ministère de la Culture, UVSQ, MNHN, IPANEMA, F-91192 Saint-Aubin, France.,Synchrotron SOLEIL, L'Orme des Merisiers, Saint Aubin BP 48, 91192, Gif-sur-Yvette, France
| | | | - Dimosthenis Sokaras
- SLAC National Accelerator Laboratory, Stanford Synchrotron Radiation Lightsource, Menlo Park, California 94025, United States
| | - Sylvain Bernard
- Muséum National d'Histoire Naturelle, Sorbonne Université, CNRS, UMR 7590, Institut de Minéralogie, Physique des Matériaux et Cosmochimie, 75005 Paris, France
| | - Uwe Bergmann
- Department of Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Jean-Pascal Rueff
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint Aubin BP 48, 91192, Gif-sur-Yvette, France.,Laboratoire de Chimie Physique-Matière et Rayonnement, Sorbonne Université, CNRS, 75005 Paris, France
| | - Loïc Bertrand
- Photophysique et Photochimie Supramoléculaires et Macromoléculaires, Université Paris-Saclay, ENS Paris-Saclay, CNRS, 91190 Gif-sur-Yvette, France
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7
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Hamilton I, Gebala M, Herschlag D, Russell R. Direct Measurement of Interhelical DNA Repulsion and Attraction by Quantitative Cross-Linking. J Am Chem Soc 2022; 144:1718-1728. [PMID: 35073489 PMCID: PMC8815069 DOI: 10.1021/jacs.1c11122] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Indexed: 12/30/2022]
Abstract
To better understand the forces that mediate nucleic acid compaction in biology, we developed the disulfide cross-linking approach xHEED (X-linking of Helices to measure Electrostatic Effects at Distance) to measure the distance-dependent encounter frequency of two DNA helices in solution. Using xHEED, we determined the distance that the electrostatic potential extends from DNA helices, the dependence of this distance on ionic conditions, and the magnitude of repulsion when two helices approach one another. Across all conditions tested, the potential falls to that of the bulk solution within 15 Å of the major groove surface. For separations of ∼30 Å, we measured a repulsion of 1.8 kcal/mol in low monovalent ion concentration (30 mM Na+), with higher Na+ concentrations ameliorating this repulsion, and 2 M Na+ or 100 mM Mg2+ eliminating it. Strikingly, we found full screening at very low Co3+ concentrations and net attraction at higher concentrations, without the higher-order DNA condensation that typically complicates studies of helical attraction. Our measurements define the relevant distances for electrostatic interactions of nucleic-acid helices in biology and introduce a new method to propel further understanding of how these forces impact biological processes.
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Affiliation(s)
- Ian Hamilton
- Department
of Molecular Biosciences, University of
Texas at Austin, Austin, Texas 78712, United States
| | - Magdalena Gebala
- Department
of Biochemistry, Stanford University, Stanford California 94305, United States
| | - Daniel Herschlag
- Department
of Biochemistry, Stanford University, Stanford California 94305, United States
| | - Rick Russell
- Department
of Molecular Biosciences, University of
Texas at Austin, Austin, Texas 78712, United States
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8
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Hande V, Chakrabarty S. Size-Dependent Order-Disorder Crossover in Hydrophobic Hydration: Comparison between Spherical Solutes and Linear Alcohols. ACS OMEGA 2022; 7:2671-2678. [PMID: 35097265 PMCID: PMC8793046 DOI: 10.1021/acsomega.1c05064] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 12/31/2021] [Indexed: 05/03/2023]
Abstract
Theory and computer simulation studies have predicted that water molecules around hydrophobic molecules should undergo an order-disorder transition with increasing solute size around a 1 nm length scale. Some theories predict the formation of a clathrate-like ordered structure around smaller hydrophobic solutes (<1 nm) and the formation of disordered vapor-liquid interfaces around larger solutes (>1 nm) and surfaces. Experimental validation of these predictions has often been elusive and contradictory. High-resolution Raman spectroscopy has detected that water around small hydrophobic solutes shows a signature similar to that of bulk water at lower temperature (increased ordering and a stronger hydrogen-bonded network). Similarly, water around larger solutes shows an increasing population of dangling OH bonds very similar to higher temperature bulk water. Thus, the solute size dependence of the structure and dynamics of water around hydrophobic molecules seems to have an analogy with the temperature dependence in bulk water. In this work, using atomistic classical molecular dynamics (MD) simulations, we have systematically investigated this aspect and characterized this interesting analogy. Structural order parameters including the tetrahedral order parameter (Q), hydrogen bond distribution, and vibrational power spectrum highlight this similarity. However, in contrast to the experimental observations, we do not observe any length-dependent crossover for linear hydrophobic alcohols (n-alkanols) using classical MD simulations. This is in agreement with earlier findings that linear alkane chains do not demonstrate the length-dependent order-disorder transition due to the presence of a sub-nanometer length scale along the cross section of the chain. Moreover, the collapsed state of linear hydrocarbon chains is not significantly populated for smaller chains (number of carbons below 20). In the context of our computational results, we raise several pertinent questions related to the sensitivity of various structural and dynamical parameters toward capturing these complex phenomena of hydrophobic hydration.
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Affiliation(s)
- Vrushali Hande
- Physical
and Materials Chemistry Division, CSIR-National
Chemical Laboratory, Pune, Maharashtra 411008, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Suman Chakrabarty
- Department
of Chemical, Biological & Macromolecular Sciences, S. N. Bose National Centre for Basic Sciences, Kolkata 700 106, India
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9
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Pruessmann T, Nagel P, Simonelli L, Batchelor D, Gordon R, Schimmelpfennig B, Trumm M, Vitova T. Opportunities and challenges of applying advanced X-ray spectroscopy to actinide and lanthanide N-donor ligand systems. JOURNAL OF SYNCHROTRON RADIATION 2022; 29:53-66. [PMID: 34985423 PMCID: PMC8733980 DOI: 10.1107/s1600577521012091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 11/12/2021] [Indexed: 06/14/2023]
Abstract
N-donor ligands such as n-Pr-BTP [2,6-bis(5,6-dipropyl-1,2,4-triazin-3-yl)pyridine] preferentially bind trivalent actinides (An3+) over trivalent lanthanides (Ln3+) in liquid-liquid separation. However, the chemical and physical processes responsible for this selectivity are not yet well understood. Here, an explorative comparative X-ray spectroscopy and computational (L3-edge) study for the An/Ln L3-edge and the N K-edge of [An/Ln(n-Pr-BTP)3](NO3)3, [Ln(n-Pr-BTP)3](CF3SO3)3 and [Ln(n-Pr-BTP)3](ClO4)3 complexes is presented. High-resolution X-ray absorption near-edge structure (HR-XANES) L3-edge data reveal additional features in the pre- and post-edge range of the spectra that are investigated using the quantum chemical codes FEFF and FDMNES. X-ray Raman spectroscopy studies demonstrate the applicability of this novel technique for investigations of liquid samples of partitioning systems at the N K-edge.
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Affiliation(s)
- Tim Pruessmann
- Institute for Nuclear Waste Disposal, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Peter Nagel
- Institute for Quantum Materials and Technologies, Karlsruhe Institute of Technology, 76021 Karlsruhe, Germany
| | - Laura Simonelli
- ALBA Synchrotron Light Facility, Cerdanyola del Vallès 08290, Spain
| | - David Batchelor
- Institute for Photon Science and Synchrotron Radiation, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Robert Gordon
- PNCSRF, APS Sector 20, Argonne, IL 60439, USA
- Moyie Institute, Burnaby, BC, Canada
| | - Bernd Schimmelpfennig
- Institute for Nuclear Waste Disposal, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Michael Trumm
- Institute for Nuclear Waste Disposal, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Tonya Vitova
- Institute for Nuclear Waste Disposal, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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10
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Sun T, Wyslouzil BE. Freezing of Dilute Aqueous-Alcohol Nanodroplets: The Effect of Molecular Structure. J Phys Chem B 2021; 125:12329-12343. [PMID: 34709826 DOI: 10.1021/acs.jpcb.1c06188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We investigate vapor-liquid nucleation and subsequent freezing of aqueous-alcohol nanodroplets containing 1-pentanol, 1-hexanol, and their 3-isomers. The aerosols are produced in a supersonic nozzle, where condensation and freezing are characterized by static pressure and Fourier transform Infrared (FTIR) spectroscopy measurements. At fixed water concentrations, the presence of alcohol enables particle formation at higher temperatures since both the equilibrium vapor pressure above the critical clusters and the cluster interfacial free energy are decreased relative to the pure water case. The disappearance of a small free OH peak, observed for pure water droplets, when alcohols are added and shifts in the CH peaks as a function of alcohol chain length reveal varying surface partitioning preferences of the alcohols. Changes in the FTIR spectra during freezing, as well as changes in the ice component derived from self-modeling curve resolution analysis, show that 1-hexanol and 1-pentanol perturb freezing less than their branched isomers do. This behavior may reflect the molecular footprints of the alcohols, the available surface area of the droplets, and not only alcohol solubility. The presence of alcohols also lowers the freezing temperature relative to that of pure water, but when there is clear evidence for the formation of ice, the ice nucleation rates change by less than a factor of ∼2-3 for all cases studied.
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Affiliation(s)
- Tong Sun
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, Ohio 43210, United States
| | - Barbara E Wyslouzil
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, Ohio 43210, United States.,Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
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11
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12
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Temperature-dependent structure of 1-propanol/water mixtures: X-ray diffraction experiments and computer simulations at low and high alcohol contents. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117188] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Weeraratna C, Amarasinghe C, Lu W, Ahmed M. A Direct Probe of the Hydrogen Bond Network in Aqueous Glycerol Aerosols. J Phys Chem Lett 2021; 12:5503-5511. [PMID: 34087076 DOI: 10.1021/acs.jpclett.1c01383] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The properties of aerosols are of paramount importance in atmospheric chemistry and human health. The hydrogen bond network of glycerol-water aerosols generated from an aqueous solution with different mixing ratios is probed directly with X-ray photoelectron spectroscopy. The carbon and oxygen X-ray spectra reveal contributions from gas and condensed phase components of the aerosol. It is shown that water suppresses glycerol evaporation up to a critical mixing ratio. A dielectric analysis using terahertz spectroscopy coupled with infrared spectroscopy of the bulk solutions provides a picture of the microscopic heterogeneity prevalent in the hydrogen bond network when combined with the photoelectron spectroscopy analysis. The hydrogen bond network is composed of three intertwined regions. At low concentrations, glycerol molecules are surrounded by water forming a solvated water network. Adding more glycerol leads to a confined water network, maximizing at 22 mol %, beyond which the aerosol resembles bulk glycerol. This microscopic view of hydrogen bonding networks holds promise in probing evaporation, diffusion dynamics, and reactivity in aqueous aerosols.
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Affiliation(s)
- Chaya Weeraratna
- Chemical Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Chandika Amarasinghe
- Chemical Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Wenchao Lu
- Chemical Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Musahid Ahmed
- Chemical Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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14
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Priyadarsini A, Mallik BS. Insignificant Effect of Temperature on the Structure and Angular Jumps of Water near a Hydrophobic Cation. ACS OMEGA 2021; 6:8356-8364. [PMID: 33817496 PMCID: PMC8015100 DOI: 10.1021/acsomega.1c00091] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 03/15/2021] [Indexed: 05/12/2023]
Abstract
The ambiguity in the behavior of water molecules around hydrophobic solutes is a matter of interest for many studies. Motivated by the earlier results on the dynamics of water molecules around tetramethylammonium (TMA) cation, we present the effect of temperature on the structure and angular jumps of water due to hydrophobicity using first principles molecular dynamics simulations. The average intermolecular distance between the central oxygen and four nearest neighbors is found to be the highest for water molecules in the solvation shell of TMA at 400 K, followed by the same at 330 K. The hydrogen bond (HB) donor-acceptor count, HB per water molecule, and tetrahedral order parameter suggests the loss of tetrahedrality in the solvation shell. Elevated temperature affects the tetrahedral parameter in local regions. The HB jump mechanism is studied for methyl hydrogen and water molecules in the solvation shell. Observations hint at the presence of dangling water molecules in the vicinity of the hydrophobic cation, and no evidence is found for the enhanced structural ordering of nearby water molecules.
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15
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16
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Sinha S, Gharat PM, Pal H, Dutta Choudhury S. Lumichrome tautomerism in alcohol-water mixtures: Effect of carbon chain length and mole fraction of alcohols. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113621] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Pothoczki S, Pusztai L, Bakó I. Molecular Dynamics Simulation Studies of the Temperature-Dependent Structure and Dynamics of Isopropanol–Water Liquid Mixtures at Low Alcohol Content. J Phys Chem B 2019; 123:7599-7610. [DOI: 10.1021/acs.jpcb.9b05631] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Szilvia Pothoczki
- Wigner Research Centre for Physics, Hungarian Academy of Sciences, Konkoly-Thege M. út 29-33, H-1121 Budapest, Hungary
| | - László Pusztai
- Wigner Research Centre for Physics, Hungarian Academy of Sciences, Konkoly-Thege M. út 29-33, H-1121 Budapest, Hungary
- International Research Organization for Advanced Science and Technology (IROAST), Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan
| | - Imre Bakó
- Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok körútja 2, H-1117 Budapest, Hungary
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18
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Sun CQ. Aqueous charge injection: solvation bonding dynamics, molecular nonbond interactions, and extraordinary solute capabilities. INT REV PHYS CHEM 2018. [DOI: 10.1080/0144235x.2018.1544446] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Chang Q. Sun
- EBEAM, Yangtze Normal University, Chongqing, People's Republic of China
- NOVITAS, EEE, Nanyang Technological University, Singapore, Singapore
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19
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Sahle CJ, Schroer MA, Jeffries CM, Niskanen J. Hydration in aqueous solutions of ectoine and hydroxyectoine. Phys Chem Chem Phys 2018; 20:27917-27923. [DOI: 10.1039/c8cp05308a] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
We explore the influence of the two osmolytes ectoine and hydroxyectoine on the structure of pure water and aqueous NaCl solutions using non-resonant X-ray Raman scattering spectroscopy at the oxygen K-edge.
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Affiliation(s)
- Christoph J. Sahle
- European Synchrotron Radiation Facility, 71 Avenue des Martyrs
- 38000 Grenoble
- France
| | - Martin A. Schroer
- European Molecular Biology Laboratory (EMBL)
- Hamburg Outstation c/o DESY
- 22607 Hamburg
- Germany
| | - Cy M. Jeffries
- European Molecular Biology Laboratory (EMBL)
- Hamburg Outstation c/o DESY
- 22607 Hamburg
- Germany
| | - Johannes Niskanen
- University of Turku
- Department of Physics and Astronomy
- FI-20014 Turun yliopisto
- Finland
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20
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Rekik N, Alshammari MF. Electrical anharmonicity and dampings contributions to Cl- H→ stretching band in gaseous (CH 3 ) 2 O…HCl complex: Quantum dynamic study and prediction of the temperature effects. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2017.04.054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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21
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Huotari S, Sahle CJ, Henriquet C, Al-Zein A, Martel K, Simonelli L, Verbeni R, Gonzalez H, Lagier MC, Ponchut C, Moretti Sala M, Krisch M, Monaco G. A large-solid-angle X-ray Raman scattering spectrometer at ID20 of the European Synchrotron Radiation Facility. JOURNAL OF SYNCHROTRON RADIATION 2017; 24:521-530. [PMID: 28244449 DOI: 10.1107/s1600577516020579] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Accepted: 12/28/2016] [Indexed: 06/06/2023]
Abstract
An end-station for X-ray Raman scattering spectroscopy at beamline ID20 of the European Synchrotron Radiation Facility is described. This end-station is dedicated to the study of shallow core electronic excitations using non-resonant inelastic X-ray scattering. The spectrometer has 72 spherically bent analyzer crystals arranged in six modular groups of 12 analyzer crystals each for a combined maximum flexibility and large solid angle of detection. Each of the six analyzer modules houses one pixelated area detector allowing for X-ray Raman scattering based imaging and efficient separation of the desired signal from the sample and spurious scattering from the often used complicated sample environments. This new end-station provides an unprecedented instrument for X-ray Raman scattering, which is a spectroscopic tool of great interest for the study of low-energy X-ray absorption spectra in materials under in situ conditions, such as in operando batteries and fuel cells, in situ catalytic reactions, and extreme pressure and temperature conditions.
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Affiliation(s)
- S Huotari
- ESRF - The European Synchrotron, CS40220, 38043 Grenoble Cedex 9, France
| | - Ch J Sahle
- ESRF - The European Synchrotron, CS40220, 38043 Grenoble Cedex 9, France
| | - Ch Henriquet
- ESRF - The European Synchrotron, CS40220, 38043 Grenoble Cedex 9, France
| | - A Al-Zein
- ESRF - The European Synchrotron, CS40220, 38043 Grenoble Cedex 9, France
| | - K Martel
- ESRF - The European Synchrotron, CS40220, 38043 Grenoble Cedex 9, France
| | - L Simonelli
- ESRF - The European Synchrotron, CS40220, 38043 Grenoble Cedex 9, France
| | - R Verbeni
- ESRF - The European Synchrotron, CS40220, 38043 Grenoble Cedex 9, France
| | - H Gonzalez
- ESRF - The European Synchrotron, CS40220, 38043 Grenoble Cedex 9, France
| | - M C Lagier
- ESRF - The European Synchrotron, CS40220, 38043 Grenoble Cedex 9, France
| | - C Ponchut
- ESRF - The European Synchrotron, CS40220, 38043 Grenoble Cedex 9, France
| | - M Moretti Sala
- ESRF - The European Synchrotron, CS40220, 38043 Grenoble Cedex 9, France
| | - M Krisch
- ESRF - The European Synchrotron, CS40220, 38043 Grenoble Cedex 9, France
| | - G Monaco
- ESRF - The European Synchrotron, CS40220, 38043 Grenoble Cedex 9, France
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22
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Lehmkühler F, Forov Y, Elbers M, Steinke I, Sahle CJ, Weis C, Tsuji N, Itou M, Sakurai Y, Poulain A, Sternemann C. Temperature dependence of the hydrogen bond network in trimethylamine N-oxide and guanidine hydrochloride–water solutions. Phys Chem Chem Phys 2017; 19:28470-28475. [DOI: 10.1039/c7cp04958g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present an X-ray Compton scattering study on aqueous trimethylamine N-oxide (TMAO) and guanidine hydrochloride solutions (GdnHCl) as a function of temperature.
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Affiliation(s)
- Felix Lehmkühler
- Deutsches Elektronen-Synchrotron DESY
- 22607 Hamburg
- Germany
- The Hamburg Centre for Ultrafast Imaging
- 22761 Hamburg
| | - Yury Forov
- Fakultät Physik/DELTA
- Technische Universität Dortmund
- 44221 Dortmund
- Germany
| | - Mirko Elbers
- Fakultät Physik/DELTA
- Technische Universität Dortmund
- 44221 Dortmund
- Germany
| | - Ingo Steinke
- Deutsches Elektronen-Synchrotron DESY
- 22607 Hamburg
- Germany
- The Hamburg Centre for Ultrafast Imaging
- 22761 Hamburg
| | | | - Christopher Weis
- Fakultät Physik/DELTA
- Technische Universität Dortmund
- 44221 Dortmund
- Germany
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23
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Fransson T, Harada Y, Kosugi N, Besley NA, Winter B, Rehr JJ, Pettersson LGM, Nilsson A. X-ray and Electron Spectroscopy of Water. Chem Rev 2016; 116:7551-69. [PMID: 27244473 DOI: 10.1021/acs.chemrev.5b00672] [Citation(s) in RCA: 109] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Here we present an overview of recent developments of X-ray and electron spectroscopy to probe water at different temperatures. Photon-induced ionization followed by detection of electrons from either the O 1s level or the valence band is the basis of photoelectron spectroscopy. Excitation between the O 1s and the unoccupied states or occupied states is utilized in X-ray absorption and X-ray emission spectroscopies. These techniques probe the electronic structure of the liquid phase and show sensitivity to the local hydrogen-bonding structure. Both experimental aspects related to the measurements and theoretical simulations to assist in the interpretation are discussed in detail. Different model systems are presented such as the different bulk phases of ice and various adsorbed monolayer structures on metal surfaces.
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Affiliation(s)
- Thomas Fransson
- Department of Physics, Chemistry and Biology, Linköping University , S-581 83 Linköping, Sweden
| | - Yoshihisa Harada
- Institute for Solid State Physics (ISSP), The University of Tokyo , Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
| | - Nobuhiro Kosugi
- Institute for Molecular Science , Myodaiji, Okazaki 444-8585, Japan
| | - Nicholas A Besley
- Department of Physical and Theoretical Chemistry, School of Chemistry, The University of Nottingham , University Park, Nottingham NG7 2RD, United Kingdom
| | - Bernd Winter
- Institute of Methods for Material Development, Helmholtz Center Berlin , Albert-Einstein-Strasse 15, D-12489 Berlin, Germany
| | - John J Rehr
- Department of Physics, University of Washington , Seattle, Washington 98195, United States
| | - Lars G M Pettersson
- Department of Physics, AlbaNova University Center, Stockholm University , S-106 91 Stockholm, Sweden
| | - Anders Nilsson
- Department of Physics, AlbaNova University Center, Stockholm University , S-106 91 Stockholm, Sweden
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24
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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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25
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Nicol JR, Dixon D, Coulter JA. Gold nanoparticle surface functionalization: a necessary requirement in the development of novel nanotherapeutics. Nanomedicine (Lond) 2016; 10:1315-26. [PMID: 25955125 DOI: 10.2217/nnm.14.219] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
With several gold nanoparticle-based therapies currently undergoing clinical trials, these treatments may soon be in the clinic as novel anticancer agents. Gold nanoparticles are the subject of a wide ranging international research effort with preclinical studies underway for multiple applications including photoablation, diagnostic imaging, radiosensitization and multifunctional drug-delivery vehicles. These applications require an increasingly complex level of surface modification in order to achieve efficacy and limit off-target toxicity. This review will discuss the main obstacles in relation to surface functionalization and the chemical approaches commonly utilized. Finally, we review a range of recent preclinical studies that aim to advance gold nanoparticle treatments toward the clinic.
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Affiliation(s)
- James R Nicol
- School of Pharmacy, McClay Research Centre, Queen's University Belfast, Belfast, UK
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26
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Sahle CJ, Schroer MA, Juurinen I, Niskanen J. Influence of TMAO and urea on the structure of water studied by inelastic X-ray scattering. Phys Chem Chem Phys 2016; 18:16518-26. [DOI: 10.1039/c6cp01922f] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present a study on the influence of the naturally occurring organic osmolytes tri-methylamine N-oxide (TMAO) and urea on the bulk structure of water using X-ray Raman scattering spectroscopy.
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Affiliation(s)
| | - Martin A. Schroer
- Deutsches Elektronen-Synchrotron DESY
- 22607 Hamburg
- Germany
- The Hamburg Centre for Ultrafast Imaging (CUI)
- 22761 Hamburg
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27
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Martiniano HFMC, Galamba N. Fast and slow dynamics and the local structure of liquid and supercooled water next to a hydrophobic amino acid. Phys Chem Chem Phys 2016; 18:27639-27647. [DOI: 10.1039/c6cp04532d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We study, through molecular dynamics simulations, the structure and orientational dynamics of water next to a blocked hydrophobic amino acid, valine (Val), above and below the freezing point of water.
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Affiliation(s)
- H. F. M. C. Martiniano
- BioSystems & Integrative Sciences Institute
- Faculdade de Ciências da Universidade de Lisboa
- Campo Grande
- Portugal
| | - N. Galamba
- Centro de Química e Bioquímica
- Faculdade de Ciências da Universidade de Lisboa
- Campo Grande
- Portugal
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28
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Hande VR, Chakrabarty S. Structural Order of Water Molecules around Hydrophobic Solutes: Length-Scale Dependence and Solute–Solvent Coupling. J Phys Chem B 2015; 119:11346-57. [DOI: 10.1021/acs.jpcb.5b03449] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Vrushali R. Hande
- Physical and Materials Chemistry
Division, CSIR-National Chemical Laboratory, Pune-411008, India
| | - Suman Chakrabarty
- Physical and Materials Chemistry
Division, CSIR-National Chemical Laboratory, Pune-411008, India
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29
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Men Z, Fang W, Li Z, Sun C, Li Z, Wang X. Hydrated-electron resonance enhancement O-H stretching vibration of water hexamer at air-water interface. OPTICS LETTERS 2015; 40:1434-1437. [PMID: 25831351 DOI: 10.1364/ol.40.001434] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Raman scattering of the O-H stretching vibration mode inside water, as well as near and at the air-water interface, was investigated by laser-induced breakdown (LIB). An intense and characteristic higher wavenumber Raman shift of the O-H vibration was observed at the air-water interface, which was attributed to the hydrated-electron resonance enhancement of the O-H stretching vibration mode of water hexamer. The hydrated electron in the water hexamer structure was formed by excess electrons injected into the gas-like phase with low hydrogen bond order under LIB. The electron-phonon coupled mechanism was discussed.
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30
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Sahle CJ, Mirone A, Niskanen J, Inkinen J, Krisch M, Huotari S. Planning, performing and analyzing X-ray Raman scattering experiments. JOURNAL OF SYNCHROTRON RADIATION 2015; 22:400-409. [PMID: 25723942 PMCID: PMC4786055 DOI: 10.1107/s1600577514027581] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Accepted: 12/17/2014] [Indexed: 06/01/2023]
Abstract
A compilation of procedures for planning and performing X-ray Raman scattering (XRS) experiments and analyzing data obtained from them is presented. In particular, it is demonstrated how to predict the overall shape of the spectra, estimate detection limits for dilute samples, and how to normalize the recorded spectra to absolute units. In addition, methods for processing data from multiple-crystal XRS spectrometers with imaging capability are presented, including a super-resolution method that can be used for direct tomography using XRS spectra as the contrast. An open-source software package with these procedures implemented is also made available.
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Affiliation(s)
- Ch. J. Sahle
- Department of Physics, PO Box 64, FI-00014 University of Helsinki, Helsinki, Finland
- European Synchrotron Radiation Facility, BP 220, F-38043 Grenoble Cedex, France
| | - A. Mirone
- European Synchrotron Radiation Facility, BP 220, F-38043 Grenoble Cedex, France
| | - J. Niskanen
- Department of Physics, PO Box 64, FI-00014 University of Helsinki, Helsinki, Finland
| | - J. Inkinen
- Department of Physics, PO Box 64, FI-00014 University of Helsinki, Helsinki, Finland
| | - M. Krisch
- European Synchrotron Radiation Facility, BP 220, F-38043 Grenoble Cedex, France
| | - S. Huotari
- Department of Physics, PO Box 64, FI-00014 University of Helsinki, Helsinki, Finland
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31
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McGregor J, Li R, Zeitler JA, D'Agostino C, Collins JHP, Mantle MD, Manyar H, Holbrey JD, Falkowska M, Youngs TGA, Hardacre C, Stitt EH, Gladden LF. Structure and dynamics of aqueous 2-propanol: a THz-TDS, NMR and neutron diffraction study. Phys Chem Chem Phys 2015; 17:30481-91. [DOI: 10.1039/c5cp01132a] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
90 molH2O% is identified as a critical composition at which alcohol–water interactions are maximised; with 4–5 H2O molecules present in the hydration shell per 2-propanol.
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Affiliation(s)
- James McGregor
- Department of Chemical Engineering and Biotechnology
- University of Cambridge
- Cambridge CB2 3RA
- UK
| | - Ruoyu Li
- Department of Chemical Engineering and Biotechnology
- University of Cambridge
- Cambridge CB2 3RA
- UK
| | - J. Axel Zeitler
- Department of Chemical Engineering and Biotechnology
- University of Cambridge
- Cambridge CB2 3RA
- UK
| | - Carmine D'Agostino
- Department of Chemical Engineering and Biotechnology
- University of Cambridge
- Cambridge CB2 3RA
- UK
| | - James H. P. Collins
- Department of Chemical Engineering and Biotechnology
- University of Cambridge
- Cambridge CB2 3RA
- UK
| | - Mick D. Mantle
- Department of Chemical Engineering and Biotechnology
- University of Cambridge
- Cambridge CB2 3RA
- UK
| | - Haresh Manyar
- School of Chemistry and Chemical Engineering
- Queen's University Belfast
- Belfast BT9 5AG
- UK
| | - John D. Holbrey
- School of Chemistry and Chemical Engineering
- Queen's University Belfast
- Belfast BT9 5AG
- UK
| | - Marta Falkowska
- School of Chemistry and Chemical Engineering
- Queen's University Belfast
- Belfast BT9 5AG
- UK
| | | | - Christopher Hardacre
- School of Chemistry and Chemical Engineering
- Queen's University Belfast
- Belfast BT9 5AG
- UK
| | | | - Lynn F. Gladden
- Department of Chemical Engineering and Biotechnology
- University of Cambridge
- Cambridge CB2 3RA
- UK
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