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Balijapelly S, Sandineni P, Adhikary A, Gerasimchuk NN, Chernatynskiy AV, Choudhury A. Ternary alkali ion thiogallates, A5GaS4 (A = Li and Na), with isolated tetrahedral building units and their ionic conductivities. Dalton Trans 2021; 50:7372-7379. [DOI: 10.1039/d1dt00766a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Lithium- and sodium-thiogallates have been synthesized by chemical sulfidation and sealed tube synthesis routes. Their ionic conductivities are reported here.
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Affiliation(s)
| | - Prashanth Sandineni
- Department of Chemistry
- Missouri University of Science and Technology
- Rolla
- USA
| | - Amit Adhikary
- Department of Chemistry
- Missouri University of Science and Technology
- Rolla
- USA
| | | | | | - Amitava Choudhury
- Department of Chemistry
- Missouri University of Science and Technology
- Rolla
- USA
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Alsiary RA, Alghrably M, Saoudi A, Al-Ghamdi S, Jaremko L, Jaremko M, Emwas AH. Using NMR spectroscopy to investigate the role played by copper in prion diseases. Neurol Sci 2020; 41:2389-2406. [PMID: 32328835 PMCID: PMC7419355 DOI: 10.1007/s10072-020-04321-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Accepted: 02/29/2020] [Indexed: 12/31/2022]
Abstract
Prion diseases are a group of rare neurodegenerative disorders that develop as a result of the conformational conversion of normal prion protein (PrPC) to the disease-associated isoform (PrPSc). The mechanism that actually causes disease remains unclear. However, the mechanism underlying the conformational transformation of prion protein is partially understood-in particular, there is strong evidence that copper ions play a significant functional role in prion proteins and in their conformational conversion. Various models of the interaction of copper ions with prion proteins have been proposed for the Cu (II)-binding, cell-surface glycoprotein known as prion protein (PrP). Changes in the concentration of copper ions in the brain have been associated with prion diseases and there is strong evidence that copper plays a significant functional role in the conformational conversion of PrP. Nevertheless, because copper ions have been shown to have both a positive and negative effect on prion disease onset, the role played by Cu (II) ions in these diseases remains a topic of debate. Because of the unique properties of paramagnetic Cu (II) ions in the magnetic field, their interactions with PrP can be tracked even at single atom resolution using nuclear magnetic resonance (NMR) spectroscopy. Various NMR approaches have been utilized to study the kinetic, thermodynamic, and structural properties of Cu (II)-PrP interactions. Here, we highlight the different models of copper interactions with PrP with particular focus on studies that use NMR spectroscopy to investigate the role played by copper ions in prion diseases.
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Affiliation(s)
- Rawiah A. Alsiary
- King Abdullah International Medical Research Center (KAIMRC), Jeddah, Saudi Arabia/King Saud bin Abdulaziz University for Health Sciences (KSAU-HS), Jeddah, Saudi Arabia
| | - Mawadda Alghrably
- Biological and Environmental Science and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, Kingdom of Saudi Arabia
| | - Abdelhamid Saoudi
- Oncology, Ministry of National Guard Health Affairs, Jeddah, Saudi Arabia. King Abdullah International Medical Research Center (KAIMRC), Jeddah, Saudi Arabia/King Saud bin Abdulaziz University for Health Sciences (KSAU-HS), Jeddah, Saudi Arabia
| | - Suliman Al-Ghamdi
- Oncology, Ministry of National Guard Health Affairs, Jeddah, Saudi Arabia. King Abdullah International Medical Research Center (KAIMRC), Jeddah, Saudi Arabia/King Saud bin Abdulaziz University for Health Sciences (KSAU-HS), Jeddah, Saudi Arabia
| | - Lukasz Jaremko
- Biological and Environmental Science and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, Kingdom of Saudi Arabia
| | - Mariusz Jaremko
- Biological and Environmental Science and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal, Kingdom of Saudi Arabia
| | - Abdul-Hamid Emwas
- Imaging and Characterization Core Lab, King Abdullah University of Science and Technology (KAUST), Thuwal, Kingdom of Saudi Arabia
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Gamon J, Duff BB, Dyer MS, Collins C, Daniels LM, Surta TW, Sharp PM, Gaultois MW, Blanc F, Claridge JB, Rosseinsky MJ. Computationally Guided Discovery of the Sulfide Li 3AlS 3 in the Li-Al-S Phase Field: Structure and Lithium Conductivity. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2019; 31:9699-9714. [PMID: 32063680 PMCID: PMC7011735 DOI: 10.1021/acs.chemmater.9b03230] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 10/22/2019] [Indexed: 06/10/2023]
Abstract
With the goal of finding new lithium solid electrolytes by a combined computational-experimental method, the exploration of the Li-Al-O-S phase field resulted in the discovery of a new sulfide Li3AlS3. The structure of the new phase was determined through an approach combining synchrotron X-ray and neutron diffraction with 6Li and 27Al magic-angle spinning nuclear magnetic resonance spectroscopy and revealed to be a highly ordered cationic polyhedral network within a sulfide anion hcp-type sublattice. The originality of the structure relies on the presence of Al2S6 repeating dimer units consisting of two edge-shared Al tetrahedra. We find that, in this structure type consisting of alternating tetrahedral layers with Li-only polyhedra layers, the formation of these dimers is constrained by the Al/S ratio of 1/3. Moreover, by comparing this structure to similar phases such as Li5AlS4 and Li4.4Al0.2Ge0.3S4 ((Al + Ge)/S = 1/4), we discovered that the AlS4 dimers not only influence atomic displacements and Li polyhedral distortions but also determine the overall Li polyhedral arrangement within the hcp lattice, leading to the presence of highly ordered vacancies in both the tetrahedral and Li-only layer. AC impedance measurements revealed a low lithium mobility, which is strongly impacted by the presence of ordered vacancies. Finally, a composition-structure-property relationship understanding was developed to explain the extent of lithium mobility in this structure type.
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Affiliation(s)
- Jacinthe Gamon
- Department
of Chemistry, University of Liverpool, Crown Street, L69 7ZD Liverpool, U.K.
| | - Benjamin B. Duff
- Department
of Chemistry, University of Liverpool, Crown Street, L69 7ZD Liverpool, U.K.
- Stephenson
Institute for Renewable Energy, University
of Liverpool, Peach Street L69 7ZF Liverpool, U.K.
| | - Matthew S. Dyer
- Department
of Chemistry, University of Liverpool, Crown Street, L69 7ZD Liverpool, U.K.
| | - Christopher Collins
- Department
of Chemistry, University of Liverpool, Crown Street, L69 7ZD Liverpool, U.K.
| | - Luke M. Daniels
- Department
of Chemistry, University of Liverpool, Crown Street, L69 7ZD Liverpool, U.K.
| | - T. Wesley Surta
- Department
of Chemistry, University of Liverpool, Crown Street, L69 7ZD Liverpool, U.K.
| | - Paul M. Sharp
- Department
of Chemistry, University of Liverpool, Crown Street, L69 7ZD Liverpool, U.K.
| | - Michael W. Gaultois
- Department
of Chemistry, University of Liverpool, Crown Street, L69 7ZD Liverpool, U.K.
| | - Frédéric Blanc
- Department
of Chemistry, University of Liverpool, Crown Street, L69 7ZD Liverpool, U.K.
- Stephenson
Institute for Renewable Energy, University
of Liverpool, Peach Street L69 7ZF Liverpool, U.K.
| | - John Bleddyn Claridge
- Department
of Chemistry, University of Liverpool, Crown Street, L69 7ZD Liverpool, U.K.
| | - Matthew J. Rosseinsky
- Department
of Chemistry, University of Liverpool, Crown Street, L69 7ZD Liverpool, U.K.
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Alahmari F, Davaasuren B, Emwas AH, M.F.J. Costa P, Rothenberger A. Tris(ethylenediamine)nickel(II) thio-hydroxogermanate monohydrate: Synthesis, crystal structure, 1H NMR, EPR, optical and magnetic properties. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.01.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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