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Drużbicki K, Gaboardi M, Fernandez-Alonso F. Dynamics & Spectroscopy with Neutrons-Recent Developments & Emerging Opportunities. Polymers (Basel) 2021; 13:1440. [PMID: 33947108 PMCID: PMC8125526 DOI: 10.3390/polym13091440] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 04/27/2021] [Indexed: 12/19/2022] Open
Abstract
This work provides an up-to-date overview of recent developments in neutron spectroscopic techniques and associated computational tools to interrogate the structural properties and dynamical behavior of complex and disordered materials, with a focus on those of a soft and polymeric nature. These have and continue to pave the way for new scientific opportunities simply thought unthinkable not so long ago, and have particularly benefited from advances in high-resolution, broadband techniques spanning energy transfers from the meV to the eV. Topical areas include the identification and robust assignment of low-energy modes underpinning functionality in soft solids and supramolecular frameworks, or the quantification in the laboratory of hitherto unexplored nuclear quantum effects dictating thermodynamic properties. In addition to novel classes of materials, we also discuss recent discoveries around water and its phase diagram, which continue to surprise us. All throughout, emphasis is placed on linking these ongoing and exciting experimental and computational developments to specific scientific questions in the context of the discovery of new materials for sustainable technologies.
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Affiliation(s)
- Kacper Drużbicki
- Materials Physics Center, CSIC-UPV/EHU, Paseo Manuel de Lardizabal 5, 20018 Donostia-San Sebastian, Spain;
- Polish Academy of Sciences, Center of Molecular and Macromolecular Studies, Sienkiewicza 112, 90-363 Lodz, Poland
| | - Mattia Gaboardi
- Elettra—Sincrotrone Trieste S.C.p.A., S.S. 14 km 163.5 in Area Science Park, 34149 Trieste, Italy;
| | - Felix Fernandez-Alonso
- Materials Physics Center, CSIC-UPV/EHU, Paseo Manuel de Lardizabal 5, 20018 Donostia-San Sebastian, Spain;
- Donostia International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 Donostia-San Sebastian, Spain
- Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UK
- IKERBASQUE, Basque Foundation for Science, Plaza Euskadi 5, 48009 Bilbao, Spain
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Cahen S, Speyer L, Lagrange P, Hérold C. Topotactic Mechanisms Related to the Graphene Planes: Chemical Intercalation of Electron Donors into Graphite. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900758] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sébastien Cahen
- Carbon‐Based Materials Group Campus ARTEM ‐ 2 Allée André Guinier, B.P. 50840 54011 Nancy Cedex France
| | - Lucie Speyer
- Carbon‐Based Materials Group Campus ARTEM ‐ 2 Allée André Guinier, B.P. 50840 54011 Nancy Cedex France
| | - Philippe Lagrange
- Carbon‐Based Materials Group Campus ARTEM ‐ 2 Allée André Guinier, B.P. 50840 54011 Nancy Cedex France
| | - Claire Hérold
- Carbon‐Based Materials Group Campus ARTEM ‐ 2 Allée André Guinier, B.P. 50840 54011 Nancy Cedex France
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Parker SF. Assignment of the vibrational spectra of the parent polysilsesquioxane (POSS): Octahydridosilasequioxane, H 8Si 8O 12. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 171:222-228. [PMID: 27537700 DOI: 10.1016/j.saa.2016.08.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 08/02/2016] [Accepted: 08/07/2016] [Indexed: 06/06/2023]
Abstract
Polysilsesquioxanes (POSS) are molecules with the empirical formula (RSiO1.5)n where R is a hydrogen atom or hydroxyl or an organic moiety such as an alkyl, alkene, acrylate or epoxide. The silicon atoms occupy the corners of a cube and oxygen atoms are located on the edges, the versatility of silsesquioxanes arises from the vacant fourth position of silicon. The choice of substituent enables a wide variety of properties to be engineered in a straightforward manner. The parent POSS is octasilsesquioxane, H8Si8O12, with R=H and n=8. The present work employs periodic density functional theory calculations in conjunction with all the available vibrational (infrared, Raman and inelastic neutron scattering) spectra to generate a complete assignment of all the modes of the parent POSS octasilsesquioxane and some of its isotopomers for both the free, (Oh), molecule and the solid state material (C3i site symmetry) including the forbidden and very weak modes. The latter are of interest because in less symmetrical silsesquioxanes, these modes will be activated.
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Affiliation(s)
- Stewart F Parker
- ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, UK
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4
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Atomic Quantum Dynamics in Materials Research. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/b978-0-12-805324-9.00007-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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5
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Lindoy LP, Kolmann SJ, D’Arcy JH, Crittenden DL, Jordan MJT. Path integral Monte Carlo simulations of H2 adsorbed to lithium-doped benzene: A model for hydrogen storage materials. J Chem Phys 2015; 143:194302. [DOI: 10.1063/1.4932940] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
| | | | - Jordan H. D’Arcy
- School of Chemistry, The University of Sydney, Sydney, Australia
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D’Arcy JH, Kolmann SJ, Jordan MJT. “Plug-and-Play” potentials: Investigating quantum effects in (H2)2–Li+–benzene. J Chem Phys 2015; 143:074311. [DOI: 10.1063/1.4928760] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Jordan H. D’Arcy
- School of Chemistry, The University of Sydney, Sydney, Australia
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7
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Pinna RS, Rudić S, Parker SF, Gorini G, Fernandez-Alonso F. Monte carlo simulations of the TOSCA spectrometer: Assessment of current performance and future upgrades. EPJ WEB OF CONFERENCES 2015. [DOI: 10.1051/epjconf/20158303013] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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8
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Kolmann SJ, D'Arcy JH, Jordan MJT. Quantum effects and anharmonicity in the H2-Li+-benzene complex: A model for hydrogen storage materials. J Chem Phys 2013; 139:234305. [DOI: 10.1063/1.4831715] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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9
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Price DL, Fernandez-Alonso F. An Introduction to Neutron Scattering. EXPERIMENTAL METHODS IN THE PHYSICAL SCIENCES 2013. [DOI: 10.1016/b978-0-12-398374-9.00001-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Purewal J, Keith JB, Ahn CC, Brown CM, Tyagi M, Fultz B. Hydrogen diffusion in potassium intercalated graphite studied by quasielastic neutron scattering. J Chem Phys 2012; 137:224704. [DOI: 10.1063/1.4767055] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Graziano G, Klimeš J, Fernandez-Alonso F, Michaelides A. Improved description of soft layered materials with van der Waals density functional theory. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2012; 24:424216. [PMID: 23032994 DOI: 10.1088/0953-8984/24/42/424216] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The accurate description of van der Waals forces within density functional theory is currently one of the most active areas of research in computational physics and chemistry. Here we report results on the structural and energetic properties of graphite and hexagonal boron nitride, two layered materials where interlayer binding is dominated by van der Waals forces. Results from several density functionals are reported, including the optimized Becke88 van der Waals (optB88-vdW) and the optimized PBE van der Waals (optPBE-vdW) (Klimeš et al 2010 J. Phys.: Condens. Matter 22 022201) functionals. Where comparison to experiment and higher-level theory is possible, the results obtained from the two new van der Waals density functionals are in good agreement. An analysis of the physical nature of the interlayer binding in both graphite and hexagonal boron nitride is also reported.
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Affiliation(s)
- Gabriella Graziano
- Thomas Young Centre, London Centre for Nanotechnology and Department of Chemistry, University College London, London WC1E 6BT, UK
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Wood C, Skipper N, Gillan M. Ca-intercalated graphite as a hydrogen storage material: Stability against decomposition into CaH2 and graphite. J SOLID STATE CHEM 2011. [DOI: 10.1016/j.jssc.2011.04.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Krzystyniak M, Adams MA, Lovell A, Skipper NT, Bennington SM, Mayers J, Fernandez-Alonso F. Probing the binding and spatial arrangement of molecular hydrogen in porous hosts via neutron Compton scattering. Faraday Discuss 2011; 151:171-97; discussion 199-212. [DOI: 10.1039/c1fd00036e] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Kurban Z, Lovell A, Jenkins D, Bennington S, Loader I, Schober A, Skipper N. Turbostratic graphite nanofibres from electrospun solutions of PAN in dimethylsulphoxide. Eur Polym J 2010. [DOI: 10.1016/j.eurpolymj.2010.03.015] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Yin F, Akola J, Koskinen P, Manninen M, Palmer RE. Bright beaches of nanoscale potassium islands on graphite in STM imaging. PHYSICAL REVIEW LETTERS 2009; 102:106102. [PMID: 19392129 DOI: 10.1103/physrevlett.102.106102] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2008] [Indexed: 05/27/2023]
Abstract
We demonstrate, via scanning tunneling microscopy (STM) measurements performed at 48 K, the existence of "bright beaches" at the edges of K islands (diameter approximately 5-500 nm) on the graphite surface. The enhanced tunneling current is only observed in monolayer-high islands on graphite, and not in islands of similar geometry on top of a K monolayer film. First-principles density functional calculations and STM simulations suggest that this is an STM field effect, which appears as the positive tip attracts donated electrons back to the metallic K islands. The restored charge accumulates preferentially at the island edges.
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Affiliation(s)
- F Yin
- Nanoscale Physics Research Laboratory, School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom
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