1
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Antypov D, Collins CM, Vasylenko A, Gusev VV, Gaultois MW, Darling GR, Dyer MS, Rosseinsky MJ. Statistically Derived Proxy Potentials Accelerate Geometry Optimization of Crystal Structures. Chemphyschem 2024; 25:e202400254. [PMID: 38567647 DOI: 10.1002/cphc.202400254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 03/26/2024] [Accepted: 03/26/2024] [Indexed: 04/04/2024]
Abstract
The crystal structures of known materials contain the information about the interatomic interactions that produced these stable compounds. Similar to the use of reported protein structures to extract effective interactions between amino acids, that has been a useful tool in protein structure prediction, we demonstrate how to use this statistical paradigm to learn the effective inter-atomic interactions in crystalline inorganic solids. By analyzing the reported crystallographic data for inorganic materials, we have constructed statistically derived proxy potentials (SPPs) that can be used to assess how realistic or unusual a computer-generated structure is compared to the reported experimental structures. The SPPs can be directly used for structure optimization to improve this similarity metric, that we refer to as the SPP score. We apply such optimization step to markedly improve the quality of the input crystal structures for DFT calculations and demonstrate that the SPPs accelerate geometry optimization for three systems relevant to battery materials. As this approach is chemistry-agnostic and can be used at scale, we produced a database of all possible pair potentials in a tabulated form ready to use.
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Affiliation(s)
- Dmytro Antypov
- Department of Chemistry, University of Liverpool, 51 Oxford Street, Liverpool, L7 3NY, UK
- Leverhulme Research Centre for Functional Materials Design, University of Liverpool, 51 Oxford Street, Liverpool, L7 3NY, UK
| | - Christopher M Collins
- Department of Chemistry, University of Liverpool, 51 Oxford Street, Liverpool, L7 3NY, UK
- Leverhulme Research Centre for Functional Materials Design, University of Liverpool, 51 Oxford Street, Liverpool, L7 3NY, UK
| | - Andrij Vasylenko
- Department of Chemistry, University of Liverpool, 51 Oxford Street, Liverpool, L7 3NY, UK
- Leverhulme Research Centre for Functional Materials Design, University of Liverpool, 51 Oxford Street, Liverpool, L7 3NY, UK
| | - Vladimir V Gusev
- Department of Computer Science, University of Liverpool, Ashton Street, Liverpool, L69 3BX, UK
| | - Michael W Gaultois
- Department of Chemistry, University of Liverpool, 51 Oxford Street, Liverpool, L7 3NY, UK
- Leverhulme Research Centre for Functional Materials Design, University of Liverpool, 51 Oxford Street, Liverpool, L7 3NY, UK
| | - George R Darling
- Department of Chemistry, University of Liverpool, 51 Oxford Street, Liverpool, L7 3NY, UK
| | - Matthew S Dyer
- Department of Chemistry, University of Liverpool, 51 Oxford Street, Liverpool, L7 3NY, UK
- Leverhulme Research Centre for Functional Materials Design, University of Liverpool, 51 Oxford Street, Liverpool, L7 3NY, UK
| | - Matthew J Rosseinsky
- Department of Chemistry, University of Liverpool, 51 Oxford Street, Liverpool, L7 3NY, UK
- Leverhulme Research Centre for Functional Materials Design, University of Liverpool, 51 Oxford Street, Liverpool, L7 3NY, UK
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2
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Sarkar D, Bhui A, Maria I, Dutta M, Biswas K. Hidden structures: a driving factor to achieve low thermal conductivity and high thermoelectric performance. Chem Soc Rev 2024; 53:6100-6149. [PMID: 38717749 DOI: 10.1039/d4cs00038b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/18/2024]
Abstract
The long-range periodic atomic arrangement or the lack thereof in solids typically dictates the magnitude and temperature dependence of their lattice thermal conductivity (κlat). Compared to crystalline materials, glasses exhibit a much-suppressed κlat across all temperatures as the phonon mean free path reaches parity with the interatomic distances therein. While the occurrence of such glass-like thermal transport in crystalline solids captivates the scientific community with its fundamental inquiry, it also holds the potential for profoundly impacting the field of thermoelectric energy conversion. Therefore, efficient manipulation of thermal transport and comprehension of the microscopic mechanisms dictating phonon scattering in crystalline solids are paramount. As quantized lattice vibrations (i.e., phonons) drive κlat, atomistic insights into the chemical bonding characteristics are crucial to have informed knowledge about their origins. Recently, it has been observed that within the highly symmetric 'averaged' crystal structures, often there are hidden locally asymmetric atomic motifs (within a few Å), which exert far-reaching influence on phonon transport. Phenomena such as local atomic off-centering, atomic rattling or tunneling, liquid-like atomic motion, site splitting, local ordering, etc., which arise within a few Å scales, are generally found to drastically disrupt the passage of heat carrying phonons. Despite their profound implication(s) for phonon dynamics, they are often overlooked by traditional crystallographic techniques. In this review, we provide a brief overview of the fundamental aspects of heat transport and explore the status quo of innately low thermally conductive crystalline solids, wherein the phonon dynamics is majorly governed by local structural phenomena. We also discuss advanced techniques capable of characterizing the crystal structure at the sub-atomic level. Subsequently, we delve into the emergent new ideas with examples linked to local crystal structure and lattice dynamics. While discussing the implications of the local structure for thermal conductivity, we provide the state-of-the-art examples of high-performance thermoelectric materials. Finally, we offer our viewpoint on the experimental and theoretical challenges, potential new paths, and the integration of novel strategies with material synthesis to achieve low κlat and realize high thermoelectric performance in crystalline solids via local structure designing.
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Affiliation(s)
- Debattam Sarkar
- New Chemistry Unit, School of Advanced Materials and International Centre for Materials Science, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O., Bangalore 560064, India.
| | - Animesh Bhui
- New Chemistry Unit, School of Advanced Materials and International Centre for Materials Science, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O., Bangalore 560064, India.
| | - Ivy Maria
- New Chemistry Unit, School of Advanced Materials and International Centre for Materials Science, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O., Bangalore 560064, India.
| | - Moinak Dutta
- New Chemistry Unit, School of Advanced Materials and International Centre for Materials Science, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O., Bangalore 560064, India.
| | - Kanishka Biswas
- New Chemistry Unit, School of Advanced Materials and International Centre for Materials Science, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur P.O., Bangalore 560064, India.
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3
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Zhang Z, Deng D, Xu X, Zhang J, Yan S, Guo Z, Dong H, Chen Z, Su Z. Stretchable Tb-Tb Distance Regulates the Piezofluorochromic Behavior of Chiral Tb(III)-MOF upon Compression. JACS AU 2024; 4:2050-2057. [PMID: 38818063 PMCID: PMC11134353 DOI: 10.1021/jacsau.4c00259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 05/01/2024] [Accepted: 05/01/2024] [Indexed: 06/01/2024]
Abstract
Luminescent chiral Tb-MOF microcrystals with the Tb2(COO)4 subunit indicated strong green mechano-luminescence under compression. Furthermore, piezofluorochromic behavior in the diamond anvil cell was observed, with the intensity tendency of decreasing-increasing-decreasing and a shortened lifetime upon compression, due to the reversible stretchable Tb-Tb interactions. The Tb-Tb distance upon compression was refined through in situ high-pressure X-ray absorption spectra, which was consistent with the tendency of the piezofluorochromic intensity. In situ high-pressure UV-vis absorption spectra, Fourier transform infrared spectra, and powder X-ray diffraction demonstrated the full recovery of Tb-MOF after over 10 GPa compressions due to the semiflexible ligand. This work not only provided an ultrastable Tb-MOF but also illustrated the relationship of the piezofluorochromic behavior with the detailed structural transformation for the first time.
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Affiliation(s)
- Ziyou Zhang
- Jiangsu
Collaborative Innovation Center of Biomedical Functional Materials,
Jiangsu Key Laboratory of Biofunctional Materials, College of Chemistry
and Materials Science, Nanjing Normal University, Nanjing 210046, China
- Center
for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
| | - Dongping Deng
- Jiangsu
Collaborative Innovation Center of Biomedical Functional Materials,
Jiangsu Key Laboratory of Biofunctional Materials, College of Chemistry
and Materials Science, Nanjing Normal University, Nanjing 210046, China
| | - Xiaoqian Xu
- Jiangsu
Collaborative Innovation Center of Biomedical Functional Materials,
Jiangsu Key Laboratory of Biofunctional Materials, College of Chemistry
and Materials Science, Nanjing Normal University, Nanjing 210046, China
| | - Jiangwei Zhang
- College
of Chemistry and Chemical Engineering, Inner
Mongolia University, Hohhot 010021, China
| | - Shuai Yan
- Shanghai
Synchrotron Radiation Facility, Institute
of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China
| | - Zhiying Guo
- Beijing
Synchrotron Radiation Facility, Institute
of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Hongliang Dong
- Center
for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
| | - Zhiqiang Chen
- Center
for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
| | - Zhi Su
- Jiangsu
Collaborative Innovation Center of Biomedical Functional Materials,
Jiangsu Key Laboratory of Biofunctional Materials, College of Chemistry
and Materials Science, Nanjing Normal University, Nanjing 210046, China
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4
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Wang WB, Li W, Ohta R, Kambara M. Cluster-Assisted Mesoplasma Chemical Vapor Deposition for Fast Epitaxial Growth of SiGe/Si Heterostructures: A Molecular Dynamics Simulation Study. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2448. [PMID: 38793514 PMCID: PMC11123204 DOI: 10.3390/ma17102448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 05/15/2024] [Accepted: 05/16/2024] [Indexed: 05/26/2024]
Abstract
Co-condensation of mixed SiGe nanoclusters and impingement of SiGe nanoclusters on a Si substrate were applied using molecular dynamics (MD) simulation in this study to mimic the fast epitaxial growth of SiGe/Si heterostructures under mesoplasma chemical vapor deposition (CVD) conditions. The condensation dynamics and properties of the SiGe nanoclusters during the simulations were investigated first, and then the impingement of transient SiGe nanoclusters on both Si smooth and trench substrate surfaces under varying conditions was studied theoretically. The results show that the mixed nanoclusters as precursors demonstrate potential for enhancing epitaxial SiGe film growth at a high growth rate, owing to their loosely bound atomic structures and high mobility on the substrate surface. By varying cluster sizes and substrate temperatures, this study also reveals that smaller clusters and higher substrate temperatures contribute to faster structural ordering and smoother surface morphologies. Furthermore, the formed layers display a consistent SiGe composition, closely aligning with nominal values, and the cluster-assisted deposition method achieves the epitaxial bridging of heterostructures during cluster impingement, highlighting its additional distinctive characteristics. The implications of this work make it clear that the mechanism of fast alloyed epitaxial film growth by cluster-assisted mesoplasma CVD is critical for extending it as a versatile platform for synthesizing various epitaxial films.
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Affiliation(s)
- Wen-bo Wang
- School of Materials Science and Engineering, Dongguan University of Technology, Dongguan 523808, China;
- School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Wenfang Li
- School of Materials Science and Engineering, Dongguan University of Technology, Dongguan 523808, China;
| | - Ryoshi Ohta
- Department of Materials Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo, Tokyo 113-8656, Japan
| | - Makoto Kambara
- Department of Materials Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo, Tokyo 113-8656, Japan
- Department of Materials and Manufacturing Science, Osaka University, 2-1, Yamadaoka, Suita 565-0871, Japan
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5
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Yuan Z, Li Z, Luo J, Nawaz A, Zhang B, Dessie W. The Optimization of Pair Distribution Functions for the Evaluation of the Degree of Disorder and Physical Stability in Amorphous Solids. Molecules 2024; 29:2379. [PMID: 38792239 PMCID: PMC11123969 DOI: 10.3390/molecules29102379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 05/11/2024] [Accepted: 05/17/2024] [Indexed: 05/26/2024] Open
Abstract
The amorphous form of poorly soluble drugs is physically unstable and prone to crystallization, resulting in decreased solubility and bioavailability. However, the conventional accelerated stability test for amorphous drugs is time-consuming and inaccurate. Therefore, there is an urgent need to develop rapid and accurate stability assessment technology. This study used the antitumor drug nilotinib free base as a model drug. The degree of disorder and physical stability in the amorphous form was assessed by applying the pair distribution function (PDF) and principal component analysis (PCA) methods based on powder X-ray diffraction (PXRD) data. Specifically, the assessment conditions, such as the PDF interatomic distance range, PXRD detector type, and PXRD diffraction angle range were also optimized. The results showed that more reliable PCA data could be obtained when the PDF interatomic distance range was 0-15 Å. When the PXRD detector was a semiconductor-type detector, the PDF data obtained were more accurate than other detectors. When the PXRD diffraction angle range was 5-40°, the intermolecular arrangement of the amorphous drugs could be accurately predicted. Finally, the accelerated stability test also showed that under the above-optimized conditions, this method could accurately and rapidly assess the degree of disorder and physical stability in the amorphous form of drugs, which has obvious advantages compared with the accelerated stability test.
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Affiliation(s)
- Zhihui Yuan
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425199, China; (Z.Y.); (J.L.); (A.N.); (W.D.)
| | - Zunhua Li
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425199, China; (Z.Y.); (J.L.); (A.N.); (W.D.)
| | - Jie Luo
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425199, China; (Z.Y.); (J.L.); (A.N.); (W.D.)
| | - Asad Nawaz
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425199, China; (Z.Y.); (J.L.); (A.N.); (W.D.)
| | - Bowen Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
| | - Wubliker Dessie
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425199, China; (Z.Y.); (J.L.); (A.N.); (W.D.)
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6
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Zografi G, Newman A, Shalaev E. Structural Features of the Glassy State and Their Impact on the Solid-State Properties of Organic Molecules in Pharmaceutical Systems. J Pharm Sci 2024:S0022-3549(24)00186-2. [PMID: 38768756 DOI: 10.1016/j.xphs.2024.05.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 05/13/2024] [Accepted: 05/14/2024] [Indexed: 05/22/2024]
Abstract
This paper reviews the structure and properties of amorphous active pharmaceutical ingredients (APIs), including small molecules and proteins, in the glassy state (below the glass transition temperature, Tg). Amorphous materials in the neat state and formulated with excipients as miscible amorphous mixtures are included, and the role of absorbed water in affecting glass structure and stability has also been considered. We defined the term "structure" to indicate the way the various molecules in a glass interact with each other and form distinctive molecular arrangements as regions or domains of varying number of molecules, molecular packing, and density. Evidence is presented to suggest that such systems generally exist as heterogeneous structures made up of high-density domains surrounded by a lower density arrangement of molecules, termed the microstructure. It has been shown that the method of preparation and the time frame for handling and storage can give rise to variable glass structures and varying physical properties. Throughout this paper, examples are given of theoretical, computer simulation, and experimental studies which focus on the nature of intermolecular interactions, the size of heterogeneous higher density domains, and the impact of such systems on the relative physical and chemical stability of pharmaceutical systems.
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Affiliation(s)
- George Zografi
- School of Pharmacy, University of Wisconsin-Madison, Madison, WI, United States
| | - Ann Newman
- Seventh Street Development Group LLC, Kure Beach, NC, United States.
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7
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Chen LX, Yano J. Deciphering Photoinduced Catalytic Reaction Mechanisms in Natural and Artificial Photosynthetic Systems on Multiple Temporal and Spatial Scales Using X-ray Probes. Chem Rev 2024; 124:5421-5469. [PMID: 38663009 DOI: 10.1021/acs.chemrev.3c00560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/09/2024]
Abstract
Utilization of renewable energies for catalytically generating value-added chemicals is highly desirable in this era of rising energy demands and climate change impacts. Artificial photosynthetic systems or photocatalysts utilize light to convert abundant CO2, H2O, and O2 to fuels, such as carbohydrates and hydrogen, thus converting light energy to storable chemical resources. The emergence of intense X-ray pulses from synchrotrons, ultrafast X-ray pulses from X-ray free electron lasers, and table-top laser-driven sources over the past decades opens new frontiers in deciphering photoinduced catalytic reaction mechanisms on the multiple temporal and spatial scales. Operando X-ray spectroscopic methods offer a new set of electronic transitions in probing the oxidation states, coordinating geometry, and spin states of the metal catalytic center and photosensitizers with unprecedented energy and time resolution. Operando X-ray scattering methods enable previously elusive reaction steps to be characterized on different length scales and time scales. The methodological progress and their application examples collected in this review will offer a glimpse into the accomplishments and current state in deciphering reaction mechanisms for both natural and synthetic systems. Looking forward, there are still many challenges and opportunities at the frontier of catalytic research that will require further advancement of the characterization techniques.
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Affiliation(s)
- Lin X Chen
- Chemical Science and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Junko Yano
- Molecular Biophysics & Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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8
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Thompson NB, Mulfort KL, Tiede DM. Toward a quantitative description of solvation structure: a framework for differential solution scattering measurements. IUCRJ 2024; 11:423-433. [PMID: 38700232 PMCID: PMC11067739 DOI: 10.1107/s2052252524003282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Accepted: 04/15/2024] [Indexed: 05/05/2024]
Abstract
Appreciating that the role of the solute-solvent and other outer-sphere interactions is essential for understanding chemistry and chemical dynamics in solution, experimental approaches are needed to address the structural consequences of these interactions, complementing condensed-matter simulations and coarse-grained theories. High-energy X-ray scattering (HEXS) combined with pair distribution function analysis presents the opportunity to probe these structures directly and to develop quantitative, atomistic models of molecular systems in situ in the solution phase. However, at concentrations relevant to solution-phase chemistry, the total scattering signal is dominated by the bulk solvent, prompting researchers to adopt a differential approach to eliminate this unwanted background. Though similar approaches are well established in quantitative structural studies of macromolecules in solution by small- and wide-angle X-ray scattering (SAXS/WAXS), analogous studies in the HEXS regime-where sub-ångström spatial resolution is achieved-remain underdeveloped, in part due to the lack of a rigorous theoretical description of the experiment. To address this, herein we develop a framework for differential solution scattering experiments conducted at high energies, which includes concepts of the solvent-excluded volume introduced to describe SAXS/WAXS data, as well as concepts from the time-resolved X-ray scattering community. Our theory is supported by numerical simulations and experiment and paves the way for establishing quantitative methods to determine the atomic structures of small molecules in solution with resolution approaching that of crystallography.
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Affiliation(s)
- Niklas B. Thompson
- Division of Chemical Sciences and Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 USA
| | - Karen L. Mulfort
- Division of Chemical Sciences and Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 USA
| | - David M. Tiede
- Division of Chemical Sciences and Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 USA
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9
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Wilke SK, Benmore CJ, Menon V, Smith D, Byrn SR, Weber R. Molecular structure of ketoprofen-polyvinylpyrrolidone solid dispersions prepared by different amorphization methods. RSC PHARMACEUTICS 2024; 1:121-131. [PMID: 38646594 PMCID: PMC11024667 DOI: 10.1039/d3pm00038a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 02/25/2024] [Indexed: 04/23/2024]
Abstract
Amorphous solid dispersions (ASDs) are a widely studied formulation approach for improving the bioavailability of poorly water-soluble pharmaceuticals. Yet, a complete understanding remains lacking for how specific processing methods may influence ASDs' molecular structure. We prepare ketoprofen/polyvinylpyrrolidone (KTP/PVP) ASDs, ranging from 0-75 wt% KTP, using five different amorphization techniques: melt quenching, rotary evaporation with vacuum drying, spray drying, and acoustic levitation with either a premixed solution or in situ mixing of separate co-sprayed solutions. The co-spray levitation approach enables on-demand compositional changes in a containerless processing environment, while requiring minimal pharmaceutical material (∼1 mg). The structure of all ASDs are then compared using high-energy X-ray total scattering. X-ray pair distribution functions are similar for most ASDs of a given composition (Rx = 0.4-2.5%), which is consistent with them having similar intramolecular structure. More notably, differences in the X-ray structure factors for the various amorphization routes indicate differing extents of molecular mixing, a direct indication of their relative stability against crystallization. Melt quenching, spray drying, and levitation of premixed solutions exhibit some degree of molecular mixing, while the co-sprayed levitation samples have molecular arrangements like those of KTP/PVP physical mixtures. These findings illustrate how X-ray total scattering can be used to benchmark amorphous forms prepared by different techniques.
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Affiliation(s)
- Stephen K Wilke
- Materials Development, Inc. Evanston 825 Chicago Ave IL 60202 USA
- X-Ray Science Division, Advanced Photon Source, Argonne National Laboratory Argonne IL 60439 USA
| | - Chris J Benmore
- X-Ray Science Division, Advanced Photon Source, Argonne National Laboratory Argonne IL 60439 USA
| | - Vrishank Menon
- Materials Development, Inc. Evanston 825 Chicago Ave IL 60202 USA
| | - Dan Smith
- Improved Pharma West Lafayette IN 47906 USA
| | | | - Richard Weber
- Materials Development, Inc. Evanston 825 Chicago Ave IL 60202 USA
- X-Ray Science Division, Advanced Photon Source, Argonne National Laboratory Argonne IL 60439 USA
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10
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Yao L, Pütz AM, Vignolo-González H, Lotsch BV. Covalent Organic Frameworks as Single-Site Photocatalysts for Solar-to-Fuel Conversion. J Am Chem Soc 2024; 146:9479-9492. [PMID: 38547041 PMCID: PMC11009957 DOI: 10.1021/jacs.3c11539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 03/11/2024] [Accepted: 03/12/2024] [Indexed: 04/11/2024]
Abstract
Single-site photocatalysts (SSPCs) are well-established as potent platforms for designing innovative materials to accomplish direct solar-to-fuel conversion. Compared to classical inorganic porous materials, such as zeolites and silica, covalent organic frameworks (COFs)─an emerging class of porous polymers that combine high surface areas, structural diversity, and chemical stability─are attractive candidates for SSPCs due to their molecular-level precision and intrinsic light harvesting ability, both amenable to structural engineering. In this Perspective, we summarize the design concepts and state-of-the-art strategies for the construction of COF SSPCs, and we review the development of COF SSPCs and their applications in solar-to-fuel conversion from their inception. Underlying pitfalls concerning photocatalytic characterization are discussed, and perspectives for the future development of this burgeoning field are given.
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Affiliation(s)
- Liang Yao
- Max
Planck Institute for Solid State Research, Heisenbergstrasse 1, 70569 Stuttgart, Germany
| | - Alexander M. Pütz
- Max
Planck Institute for Solid State Research, Heisenbergstrasse 1, 70569 Stuttgart, Germany
- Department
of Chemistry, University of Munich (LMU), Butenandtstrasse 5-13, 81377 Munich, Germany
| | - Hugo Vignolo-González
- Max
Planck Institute for Solid State Research, Heisenbergstrasse 1, 70569 Stuttgart, Germany
- Department
of Chemistry, University of Munich (LMU), Butenandtstrasse 5-13, 81377 Munich, Germany
| | - Bettina V. Lotsch
- Max
Planck Institute for Solid State Research, Heisenbergstrasse 1, 70569 Stuttgart, Germany
- Department
of Chemistry, University of Munich (LMU), Butenandtstrasse 5-13, 81377 Munich, Germany
- E-Conversion
and Center for Nanoscience, Lichtenbergstraße 4a, Garching, 85748 Munich, Germany
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11
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Guo L, Wu S, Zhou Z, Ma Y. Structural analysis of nanocrystals by pair distribution function combining electron diffraction with crystal tilting. IUCRJ 2024; 11:202-209. [PMID: 38362918 PMCID: PMC10916296 DOI: 10.1107/s2052252524001064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 01/31/2024] [Indexed: 02/17/2024]
Abstract
As an important characterization method, pair distribution function (PDF) has been extensively used in structural analysis of nanomaterials, providing key insights into the degree of crystallinity, atomic structure, local disorder etc. The collection of scattering signals with good statistics is necessary for a reliable structural analysis. However, current conventional electron diffraction experiments using PDF (ePDF) are limited in their ability to acquire continuous diffraction rings for large nanoparticles. Herein, a new method - tilt-ePDF - is proposed to improve the data quality and compatibility of ePDF by a combination of electron diffraction and specimen tilting. In the present work, a tilt-series of electron diffraction patterns was collected from gold nanoparticles with three different sizes and a standard sample polycrystalline aluminium film for ePDF analysis. The results show that tilt-ePDF can not only enhance the continuity of diffraction rings, but can also improve the signal-to-noise ratio in the high scattering angle range. As a result, compared with conventional ePDF data, tilt-ePDF data provide structure parameters with a better accuracy and lower residual factors in the refinement against the crystal structure. This method provides a new way of utilizing ePDF to obtain accurate local structure information from nanoparticles.
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Affiliation(s)
- Linshuo Guo
- School of Physical Science and Technology, and Shanghai Key Laboratory of High-resolution Electron Microscopy, ShanghaiTech University, Shanghai 201210, People’s Republic of China
| | - Shitao Wu
- School of Physical Science and Technology, and Shanghai Key Laboratory of High-resolution Electron Microscopy, ShanghaiTech University, Shanghai 201210, People’s Republic of China
| | - Zhengyang Zhou
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People’s Republic of China
| | - Yanhang Ma
- School of Physical Science and Technology, and Shanghai Key Laboratory of High-resolution Electron Microscopy, ShanghaiTech University, Shanghai 201210, People’s Republic of China
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12
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Anker AS, Kjær ETS, Juelsholt M, Jensen KMØ. POMFinder: identifying polyoxometallate cluster structures from pair distribution function data using explainable machine learning. J Appl Crystallogr 2024; 57:34-43. [PMID: 38322723 PMCID: PMC10840315 DOI: 10.1107/s1600576723010014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 11/16/2023] [Indexed: 02/08/2024] Open
Abstract
Characterization of a material structure with pair distribution function (PDF) analysis typically involves refining a structure model against an experimental data set, but finding or constructing a suitable atomic model for PDF modelling can be an extremely labour-intensive task, requiring carefully browsing through large numbers of possible models. Presented here is POMFinder, a machine learning (ML) classifier that rapidly screens a database of structures, here polyoxometallate (POM) clusters, to identify candidate structures for PDF data modelling. The approach is shown to identify suitable POMs from experimental data, including in situ data collected with fast acquisition times. This automated approach has significant potential for identifying suitable models for structure refinement to extract quantitative structural parameters in materials chemistry research. POMFinder is open source and user friendly, making it accessible to those without prior ML knowledge. It is also demonstrated that POMFinder offers a promising modelling framework for combined modelling of multiple scattering techniques.
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Affiliation(s)
- Andy S. Anker
- Department of Chemistry and Nano-Science Center, University of Copenhagen, 2100 Copenhagen Ø, Denmark
| | - Emil T. S. Kjær
- Department of Chemistry and Nano-Science Center, University of Copenhagen, 2100 Copenhagen Ø, Denmark
| | - Mikkel Juelsholt
- Department of Materials, University of Oxford, Parks Road, Oxford, Oxfordshire OX1 3PH, United Kingdom
| | - Kirsten M. Ø. Jensen
- Department of Chemistry and Nano-Science Center, University of Copenhagen, 2100 Copenhagen Ø, Denmark
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13
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Pardhi E, Tomar DS, Khemchandani R, Bazaz MR, Dandekar MP, Samanthula G, Singh SB, Mehra NK. Monophasic coamorphous sulpiride: a leap in physicochemical attributes and dual inhibition of GlyT1 and P-glycoprotein, supported by experimental and computational insights. J Biomol Struct Dyn 2024:1-30. [PMID: 38299571 DOI: 10.1080/07391102.2024.2308048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 12/30/2023] [Indexed: 02/02/2024]
Abstract
Study aimed to design and development of a supramolecular formulation of sulpiride (SUL) to enhance its solubility, dissolution and permeability by targeting a novel GlyT1 inhibition mechanism. SUL is commonly used to treat gastric and duodenal ulcers, migraine, anti-emetic, anti-depressive and anti-dyspeptic conditions. Additionally, Naringin (NARI) was incorporated as a co-former to enhance the drug's intestinal permeability by targeting P-glycoprotein (P-gp) efflux inhibition. NARI, a flavonoid has diverse biological activities, including anti-apoptotic, anti-oxidant, and anti-inflammatory properties. This study aims to design and develop a supramolecular formulation of SUL with NARI to enhance its solubility, dissolution, and permeability by targeting a novel GlyT1 inhibition mechanism, extensive experimental characterization was performed using solid-state experimental techniques in conjunction with a computational approach. This approach included quantum mechanics-based molecular dynamics (MD) simulation and density functional theory (DFT) studies to investigate intermolecular interactions, phase transformation and various electronic structure-based properties. The findings of the miscibility study, radial distribution function (RDF) analysis, quantitative simulations of hydrogen/π-π bond interactions and geometry optimization aided in comprehending the coamorphization aspects of SUL-NARI Supramolecular systems. Molecular docking and MD simulation were performed for detailed binding affinity assessment and target validation. The solubility, dissolution and ex-vivo permeability studies demonstrated significant improvements with 31.88-fold, 9.13-fold and 1.83-fold increments, respectively. Furthermore, biological assessments revealed superior neuroprotective effects in the SUL-NARI coamorphous system compared to pure SUL. In conclusion, this study highlights the advantages of a drug-nutraceutical supramolecular formulation for improving the solubility and permeability of SUL, targeting novel schizophrenia treatment approaches through combined computational and experimental analyses.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Ekta Pardhi
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Hyderabad, India
| | - Devendra Singh Tomar
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Hyderabad, India
| | - Rahul Khemchandani
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| | - Mohd Rabi Bazaz
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| | - Manoj P Dandekar
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| | - Gananadhamu Samanthula
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| | - Shashi Bala Singh
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad, India
| | - Neelesh Kumar Mehra
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research, Hyderabad, India
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14
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Fei L, Wang M, Qiao M, Zhang Y, Wang A, Zhao Y, Liu J, Wang S, Guo X, Wang J, Bi J, Zhang P, Guo Z, Yue Y, Yuan J, Di Tommaso D, Li F, Ji Z. Comparative Investigation of the Microstructure of MgCl 2 Aqueous Solutions Using Different X-ray Scattering Sources, Raman Spectroscopy, and Atomistic Simulations. J Phys Chem B 2024; 128:208-221. [PMID: 38113228 DOI: 10.1021/acs.jpcb.3c05763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
Aqueous solutions of magnesium chloride (MgCl2(aq)) are often used to test advances in the theory of electrolyte solutions because they are considered an ideal strong 2:1 electrolyte. However, there is evidence that some ion association occurs in these solutions, even at low concentrations. Even a small ion-pairing constant can have a significant impact on the chemical speciation of ions, so it is important to determine whether ion pairing actually occurs. In this study, MgCl2(aq) with concentrations ranging from 1 to 35% was studied using three methods: X-ray scattering (XRS) with the Shanghai Synchrotron Radiation Facility (SSRF) and silver-anode laboratory sources, Raman spectroscopy, and molecular dynamics (MD) simulations with the COMPASS-II and Madrid force fields. XRS results were analyzed in the framework of PDF theory to obtain the reduced structure function F(Q) and the reduced pair distribution function G(r). The F(Q) values from synchrotron radiation and laboratory sources both showed that the tetrahedral hydrogen bonds in bulk water were destroyed with the increased MgCl2 concentration. The results of G(r) indicated that the main peaks centered at 2.05 and 2.80 Å can be ascribed to the interactions of Mg-O and O-O, respectively. The peak at 3.10 Å is attributed to the combined effect of O-O and Cl-O. By comparing the structural information on MgCl2 solution obtained from the two light sources, it was found that both SSRF and silver-anode laboratory sources can reflect the above-mentioned structural information on MgCl2 solution. The radial distribution function (RDF) obtained from MD simulations of MgCl2 solutions assigned the peaks at 2.0, 2.8, and 3.2 Å to the Mg-O, O-O, and Cl-O interatomic pairs, respectively. The decrease in the O-O coordination number confirms that the hydrogen-bonding network of water is disrupted by increasing MgCl2 observed by X-ray scattering. The proportion of Mg-Cl contact ion pairs gradually increases with MgCl2 concentration as does the coordination number. Raman spectroscopy results show that the bond type changes from double donor double acceptor (DDAA) to single donor-single acceptor (DA) with increasing concentration, providing explicit details of the hydrogen-bond evolution in the aqueous solution.
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Affiliation(s)
- Liting Fei
- Engineering Research Center of Seawater Utilization Technology of Ministry of Education, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
| | - Meiling Wang
- Engineering Research Center of Seawater Utilization Technology of Ministry of Education, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
| | - Mengdan Qiao
- Engineering Research Center of Seawater Utilization Technology of Ministry of Education, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
| | - Yu Zhang
- Engineering Research Center of Seawater Utilization Technology of Ministry of Education, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
| | - Ao Wang
- Engineering Research Center of Seawater Utilization Technology of Ministry of Education, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
| | - Yingying Zhao
- Engineering Research Center of Seawater Utilization Technology of Ministry of Education, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
- National-Local Joint Engineering Laboratory of Chemical Energy Saving Process Integration and Resource Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
- Tianjin Key Laboratory of Intrinsically Safe Chemical Technology, Tianjin 300130, China
- Hebei Collaborative Innovation Center of Modern Marine Chemical Technology, Tianjin 300401, China
| | - Jie Liu
- Engineering Research Center of Seawater Utilization Technology of Ministry of Education, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
- National-Local Joint Engineering Laboratory of Chemical Energy Saving Process Integration and Resource Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
- Tianjin Key Laboratory of Intrinsically Safe Chemical Technology, Tianjin 300130, China
- Hebei Collaborative Innovation Center of Modern Marine Chemical Technology, Tianjin 300401, China
| | - Shizhao Wang
- Engineering Research Center of Seawater Utilization Technology of Ministry of Education, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
- National-Local Joint Engineering Laboratory of Chemical Energy Saving Process Integration and Resource Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
- Tianjin Key Laboratory of Intrinsically Safe Chemical Technology, Tianjin 300130, China
- Hebei Collaborative Innovation Center of Modern Marine Chemical Technology, Tianjin 300401, China
| | - Xiaofu Guo
- Engineering Research Center of Seawater Utilization Technology of Ministry of Education, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
- National-Local Joint Engineering Laboratory of Chemical Energy Saving Process Integration and Resource Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
- Tianjin Key Laboratory of Intrinsically Safe Chemical Technology, Tianjin 300130, China
- Hebei Collaborative Innovation Center of Modern Marine Chemical Technology, Tianjin 300401, China
| | - Jing Wang
- Engineering Research Center of Seawater Utilization Technology of Ministry of Education, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
- National-Local Joint Engineering Laboratory of Chemical Energy Saving Process Integration and Resource Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
- Tianjin Key Laboratory of Intrinsically Safe Chemical Technology, Tianjin 300130, China
- Hebei Collaborative Innovation Center of Modern Marine Chemical Technology, Tianjin 300401, China
| | - Jingtao Bi
- Engineering Research Center of Seawater Utilization Technology of Ministry of Education, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
- National-Local Joint Engineering Laboratory of Chemical Energy Saving Process Integration and Resource Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
- Tianjin Key Laboratory of Intrinsically Safe Chemical Technology, Tianjin 300130, China
- Hebei Collaborative Innovation Center of Modern Marine Chemical Technology, Tianjin 300401, China
| | - Panpan Zhang
- Engineering Research Center of Seawater Utilization Technology of Ministry of Education, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
- National-Local Joint Engineering Laboratory of Chemical Energy Saving Process Integration and Resource Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
- Tianjin Key Laboratory of Intrinsically Safe Chemical Technology, Tianjin 300130, China
- Hebei Collaborative Innovation Center of Modern Marine Chemical Technology, Tianjin 300401, China
| | - Zhiyuan Guo
- Engineering Research Center of Seawater Utilization Technology of Ministry of Education, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
- National-Local Joint Engineering Laboratory of Chemical Energy Saving Process Integration and Resource Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
- Tianjin Key Laboratory of Intrinsically Safe Chemical Technology, Tianjin 300130, China
- Hebei Collaborative Innovation Center of Modern Marine Chemical Technology, Tianjin 300401, China
| | - Yajun Yue
- China Spallation Neutron Source, Dongguan, Guangdong 523000, China
| | - Junsheng Yuan
- Engineering Research Center of Seawater Utilization Technology of Ministry of Education, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
- National-Local Joint Engineering Laboratory of Chemical Energy Saving Process Integration and Resource Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
- Tianjin Key Laboratory of Intrinsically Safe Chemical Technology, Tianjin 300130, China
- Hebei Collaborative Innovation Center of Modern Marine Chemical Technology, Tianjin 300401, China
| | - Devis Di Tommaso
- Department of Chemistry, School of Physical and Chemical Sciences, Queen Mary University of London, Mile End Road, London E1 4NS, U.K
- Digital Environment Research Institute, Queen Mary University of London, Empire House, 67-75 New Road, London E1 1HH, U.K
| | - Fei Li
- Engineering Research Center of Seawater Utilization Technology of Ministry of Education, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
- National-Local Joint Engineering Laboratory of Chemical Energy Saving Process Integration and Resource Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
- Tianjin Key Laboratory of Intrinsically Safe Chemical Technology, Tianjin 300130, China
- Hebei Collaborative Innovation Center of Modern Marine Chemical Technology, Tianjin 300401, China
| | - Zhiyong Ji
- Engineering Research Center of Seawater Utilization Technology of Ministry of Education, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
- National-Local Joint Engineering Laboratory of Chemical Energy Saving Process Integration and Resource Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
- Tianjin Key Laboratory of Intrinsically Safe Chemical Technology, Tianjin 300130, China
- Hebei Collaborative Innovation Center of Modern Marine Chemical Technology, Tianjin 300401, China
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15
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Reinle-Schmitt M, Šišak Jung D, Morin M, Costa F, Casati N, Gozzo F. Exploring high-throughput synchrotron X-Ray powder diffraction for the structural analysis of pharmaceuticals. Int J Pharm X 2023; 6:100221. [PMID: 38146324 PMCID: PMC10749245 DOI: 10.1016/j.ijpx.2023.100221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 11/20/2023] [Accepted: 11/27/2023] [Indexed: 12/27/2023] Open
Abstract
Synchrotron radiation offers a host of advanced properties, surpassing conventional laboratory sources with its high brightness, tunable phonon energy, photon beam coherence for advanced X-ray imaging, and a structured time profile, ideal for capturing dynamic atomic and molecular processes. However, these benefits come at the cost of operational complexity and expenses. Three decades ago, synchrotron radiation facilities, while technically open to all scientists, primarily served a limited community. Despite substantial accessibility improvements over the past two decades, synchrotron measurements still do not qualify as routine analyses. The intrinsic complexity of synchrotron science means experiments are pursued only when no alternatives suffice. In recent years, strides have been made in technology transfer offices, intermediate synchrotron-based analytical service companies, and the development of high-throughput synchrotron systems at various facilities, reshaping the perception of synchrotron science. This article investigates the practical application of synchrotron X-Ray Powder Diffraction (s-XRPD) techniques in pharmaceutical analysis. By utilizing concrete examples, we demonstrate how high-throughput systems have the potential to revolutionize s-XRPD applications in the pharmaceutical industry, rapidly generating XRPD patterns of comparable or superior quality to those obtained in state-of-the-art laboratory XRPD, all in less than 5 s. Additional cases featuring well-established pharmaceutical active ingredients (API) and excipients substantiate the concept of high throughput in pharmaceuticals, affirming data quality through structural refinements aligned with literature-derived unit cell parameters. Synchrotron data need not always be state-of-the-art to compete with lab-XRPD data. The key lies in ensuring user-friendliness, reproducibility, accessibility, cost-effectiveness, and the streamlined efforts associated with synchrotron instrumentation to remain highly competitive with their laboratory counterparts.
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Affiliation(s)
- M. Reinle-Schmitt
- Excelsus Structural Solutions (Swiss) AG, PARK INNOVAARE, 5234 Villigen, Switzerland
| | - D. Šišak Jung
- DECTRIS, Täfernweg 1, 5405 Baden-Dättwil, Switzerland
| | - M. Morin
- Excelsus Structural Solutions (Swiss) AG, PARK INNOVAARE, 5234 Villigen, Switzerland
| | - F.N. Costa
- Excelsus Structural Solutions (Swiss) AG, PARK INNOVAARE, 5234 Villigen, Switzerland
| | - N. Casati
- Paul Scherrer Institute, Forschungsstrasse 111, 5232 Villigen PSI, Switzerland
| | - F. Gozzo
- Excelsus Structural Solutions (Swiss) AG, PARK INNOVAARE, 5234 Villigen, Switzerland
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16
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Farsad A, Marcos-Hernandez M, Sinha S, Westerhoff P. Sous Vide-Inspired Impregnation of Amorphous Titanium (Hydr)Oxide into Carbon Block Point-of-Use Filters for Arsenic Removal from Water. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:20410-20420. [PMID: 37948748 PMCID: PMC10810566 DOI: 10.1021/acs.est.3c06586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
Carbon block filters, commonly employed as point-of-use (POU) water treatment components, effectively eliminate pathogens and adsorb undesirable tastes, odors, and organic contaminants, all while producing no water waste. However, they lack the capability to remove arsenic. Enabling the carbon block to remove arsenic could reduce its exposure risks in tap water. Inspired by Sous vide cooking techniques, we developed a low-energy, low-chemical method for impregnating commercially available carbon block with titanium (hydr)oxide (THO) in four integrated steps: (1) vacuum removal of air from the carbon block, (2) impregnation with precursors in a flexible pouch, (3) sealing to prevent oxygen intrusion, and (4) heating in a water bath at 80 °C for 20 h to eliminate exposure and reactions with air. This process achieved a uniform 13 wt % Ti loading in the carbon block. Our modified carbon block POU filter efficiently removed both arsenate and arsenite from tap water matrices containing 10 or 100 μg/L arsenic concentrations in batch experiments or continuous flow operations. Surprisingly, the THO-modified carbon block removed arsenite better than arsenate. This innovative method, using 70% fewer chemicals than traditional autoclave techniques, offers a cost-effective solution to reduce exposure to arsenic and lower its overall risk in tap water.
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Affiliation(s)
- Alireza Farsad
- School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ 85287, USA
- Engineering Research Center for Nanotechnology-Enabled Water Treatment (NEWT), Arizona State University, Tempe, AZ 85287, USA
| | - Mariana Marcos-Hernandez
- School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ 85287, USA
| | - Shahnawaz Sinha
- School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ 85287, USA
- Engineering Research Center for Nanotechnology-Enabled Water Treatment (NEWT), Arizona State University, Tempe, AZ 85287, USA
| | - Paul Westerhoff
- School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ 85287, USA
- Engineering Research Center for Nanotechnology-Enabled Water Treatment (NEWT), Arizona State University, Tempe, AZ 85287, USA
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17
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Silva IDA, Bartalucci E, Bolm C, Wiegand T. Opportunities and Challenges in Applying Solid-State NMR Spectroscopy in Organic Mechanochemistry. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2304092. [PMID: 37407000 DOI: 10.1002/adma.202304092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 06/12/2023] [Accepted: 06/28/2023] [Indexed: 07/07/2023]
Abstract
In recent years it is shown that mechanochemical strategies can be beneficial in directed conversions of organic compounds. Finding new reactions proved difficult, and due to the lack of mechanistic understanding of mechanochemical reaction events, respective efforts have mostly remained empirical. Spectroscopic techniques are crucial in shedding light on these questions. In this overview, the opportunities and challenges of solid-state nuclear magnetic resonance (NMR) spectroscopy in the field of organic mechanochemistry are discussed. After a brief discussion of the basics of high-resolution solid-state NMR under magic-angle spinning (MAS) conditions, seven opportunities for solid-state NMR in the field of organic mechanochemistry are presented, ranging from ex situ approaches to structurally elucidated reaction products obtained by milling to the potential and limitations of in situ solid-state NMR approaches. Particular strengths of solid-state NMR, for instance in differentiating polymorphs, in NMR-crystallographic structure-determination protocols, or in detecting weak noncovalent interactions in molecular-recognition events employing proton-detected solid-state NMR experiments at fast MAS frequencies, are discussed.
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Affiliation(s)
| | - Ettore Bartalucci
- Max Planck Institute for Chemical Energy Conversion, Stiftstr. 34-36, 45470, Mülheim/Ruhr, Germany
- Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Worringerweg 2, 52074, Aachen, Germany
| | - Carsten Bolm
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Thomas Wiegand
- Max Planck Institute for Chemical Energy Conversion, Stiftstr. 34-36, 45470, Mülheim/Ruhr, Germany
- Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Worringerweg 2, 52074, Aachen, Germany
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18
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Worlitzer VM, Ariel G, Lazar EA. Pair correlation function based on Voronoi topology. Phys Rev E 2023; 108:064115. [PMID: 38243531 DOI: 10.1103/physreve.108.064115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 11/09/2023] [Indexed: 01/21/2024]
Abstract
The pair correlation function (PCF) has proven an effective tool for analyzing many physical systems due to its simplicity and its applicability for simulated and experimental data. However, as an averaged quantity, the PCF can fail to capture subtle structural differences in particle arrangements, even when those differences can have a major impact on system properties. Here, we use Voronoi topology to introduce a discrete version of the PCF that highlights local interparticle topological configurations. The advantages of the Voronoi PCF are demonstrated in several examples including crystalline, hyperuniform, and active systems showing clustering and giant number fluctuations.
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Affiliation(s)
- Vasco M Worlitzer
- Department of Mathematics, Bar Ilan University, Ramat Gan 5290002, Israel
| | - Gil Ariel
- Department of Mathematics, Bar Ilan University, Ramat Gan 5290002, Israel
| | - Emanuel A Lazar
- Department of Mathematics, Bar Ilan University, Ramat Gan 5290002, Israel
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19
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Goncalves BG, Heise RM, Banerjee IA. Development of Self-Assembled Biomimetic Nanoscale Collagen-like Peptide-Based Scaffolds for Tissue Engineering: An In Silico and Laboratory Study. Biomimetics (Basel) 2023; 8:548. [PMID: 37999189 PMCID: PMC10669358 DOI: 10.3390/biomimetics8070548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 11/01/2023] [Accepted: 11/02/2023] [Indexed: 11/25/2023] Open
Abstract
Development of biocomposite scaffolds has gained tremendous attention due to their potential for tissue regeneration. However, most scaffolds often contain animal-derived collagen that may elicit an immunological response, necessitating the development of new biomaterials. Herein, we developed a new collagen-like peptide,(Pro-Ala-His)10 (PAH)10, and explored its ability to be utilized as a functional biomaterial by incorporating it with a newly synthesized peptide-based self-assembled gel. The gel was prepared by conjugating a pectin derivative, galataric acid, with a pro-angiogenic peptide (LHYQDLLQLQY) and further functionalized with a cortistatin-derived peptide, (Phe-Trp-Lys-Thr)4 (FWKT)4, and the bio-ionic liquid choline acetate. The self-assembly of (PAH)10 and its interactions with the galactarate-peptide conjugates were examined using replica exchange molecular dynamics (REMD) simulations. Results revealed the formation of a multi-layered scaffold, with enhanced stability at higher temperatures. We then synthesized the scaffold and examined its physicochemical properties and its ability to integrate with aortic smooth muscle cells. The scaffold was further utilized as a bioink for bioprinting to form three-dimensional cell-scaffold matrices. Furthermore, the formation of actin filaments and elongated cell morphology was observed. These results indicate that the (PAH)10 hybrid scaffold provides a suitable environment for cell adhesion, proliferation and growth, making it a potentially valuable biomaterial for tissue engineering.
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Affiliation(s)
| | | | - Ipsita A. Banerjee
- Department of Chemistry, Fordham University, 441 East Fordham Road, Bronx, New York, NY 10458, USA; (B.G.G.); (R.M.H.)
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20
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Tikhonov DS. Regularized weighted sine least-squares spectral analysis for gas electron diffraction data. J Chem Phys 2023; 159:174101. [PMID: 37909450 DOI: 10.1063/5.0168417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 10/12/2023] [Indexed: 11/03/2023] Open
Abstract
Here, we present a new approach for obtaining radial distribution functions (RDF) from the electron diffraction data using a regularized weighted sine least-squares spectral analysis. It allows for explicitly transferring the measured experimental uncertainties in the reduced molecular scattering function to the produced RDF. We provide a numerical demonstration, discuss the uncertainties and correlations in the RDFs, and suggest a regularization parameter choice criterion. The approach is also applicable for other diffraction data, e.g., for x-ray or neutron diffraction of liquid samples.
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Affiliation(s)
- Denis S Tikhonov
- Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22607 Hamburg, Germany
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21
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Chen Z, Nie H, Benmore CJ, Smith PA, Du Y, Byrn S, Templeton AC, Su Y. Probing Molecular Packing of Amorphous Pharmaceutical Solids Using X-ray Atomic Pair Distribution Function and Solid-State NMR. Mol Pharm 2023; 20:5763-5777. [PMID: 37800667 DOI: 10.1021/acs.molpharmaceut.3c00628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/07/2023]
Abstract
The structural investigation of amorphous pharmaceuticals is of paramount importance in comprehending their physicochemical stability. However, it has remained a relatively underexplored realm primarily due to the limited availability of high-resolution analytical tools. In this study, we utilized the combined power of X-ray pair distribution functions (PDFs) and solid-state nuclear magnetic resonance (ssNMR) techniques to probe the molecular packing of amorphous posaconazole and its amorphous solid dispersion at the molecular level. Leveraging synchrotron X-ray PDF data and employing the empirical potential structure refinement (EPSR) methodology, we unraveled the existence of a rigid conformation and discerned short-range intermolecular C-F contacts within amorphous posaconazole. Encouragingly, our ssNMR 19F-13C distance measurements offered corroborative evidence supporting these findings. Furthermore, employing principal component analysis on the X-ray PDF and ssNMR data sets enabled us to gain invaluable insights into the chemical nature of the intermolecular interactions governing the drug-polymer interplay. These outcomes not only furnish crucial structural insights facilitating the comprehension of the underlying mechanisms governing the physicochemical stability but also underscore the efficacy of synergistically harnessing X-ray PDF and ssNMR techniques, complemented by robust modeling strategies, to achieve a high-resolution exploration of amorphous structures.
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Affiliation(s)
- Zhenxuan Chen
- Analytical Research and Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Haichen Nie
- Center for Materials Science and Engineering, Merck & Co., Inc., West Point, Pennsylvania 19486, United States
- Pharmaceutical Sciences and Clinical Supply, Merck & Co., Inc., West Point, Pennsylvania 19486, United States
| | - Chris J Benmore
- X-ray Science Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Pamela A Smith
- Improved Pharma, West Lafayette, Indiana 47906, United States
| | - Yong Du
- Analytical Research and Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Stephen Byrn
- Improved Pharma, West Lafayette, Indiana 47906, United States
- Department of Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, Indiana 47907, United States
| | - Allen C Templeton
- Pharmaceutical Sciences and Clinical Supply, Merck & Co., Inc., West Point, Pennsylvania 19486, United States
| | - Yongchao Su
- Analytical Research and Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
- Pharmaceutical Sciences and Clinical Supply, Merck & Co., Inc., West Point, Pennsylvania 19486, United States
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22
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Hong R, Nie H, Henry RF, Garner SM, Catron ND, Hertzler RL, Souers AJ, Sheikh AY, Chen S. Pharmaceutical Development Challenges in a Beyond Rule of Five Prodrug: Case Study of ABBV-167, Phosphate Prodrug of Venetoclax. Mol Pharm 2023; 20:5811-5826. [PMID: 37750872 DOI: 10.1021/acs.molpharmaceut.3c00675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/27/2023]
Abstract
ABBV-167, a phosphate prodrug of BCL-2 inhibitor venetoclax, was recently progressed into the clinic as an alternative means of reducing pill burden for patients in high-dose indications. The dramatically enhanced aqueous solubility of ABBV-167 allowed for high drug loading within a crystalline tablet and, when administered in phase I clinical study, conferred venetoclax exposure commensurate with the equivalent dose administered as an amorphous solid dispersion. In enabling the progression into the clinic, we performed a comprehensive evaluation of the CMC development aspects of this beyond the rule of five (bRo5) prodrug. Adding a phosphate moiety resulted in excessively complex chemical speciation and solid form landscapes with significant physical-chemical stability liabilities. A combination of experimental and computational methods including microelectron diffraction (MicroED), total scattering, tablet colorimetry, finite element, and molecular dynamics modeling were used to understand CMC developability across drug substance and product manufacture and storage. The prodrug's chemical structural characteristics and loose crystal packing were found to be responsible for the loss of crystallinity during its manufacturing, which in turn led to high solid-state chemical reactivity and poor shelf life stability. The ABBV-167 case exemplifies key CMC development challenges for complex chemical matter such as bRo5 phosphate prodrugs with significant ramifications during drug substance and drug product manufacturing and storage.
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Affiliation(s)
- Richard Hong
- Research & Development, AbbVie Inc., North Chicago, Illinois 60064, United States
| | - Haichen Nie
- Research & Development, AbbVie Inc., North Chicago, Illinois 60064, United States
| | - Rodger F Henry
- Research & Development, AbbVie Inc., North Chicago, Illinois 60064, United States
| | - Sean M Garner
- Research & Development, AbbVie Inc., North Chicago, Illinois 60064, United States
| | - Nathaniel D Catron
- Research & Development, AbbVie Inc., North Chicago, Illinois 60064, United States
| | - Russell L Hertzler
- Research & Development, AbbVie Inc., North Chicago, Illinois 60064, United States
| | - Andrew J Souers
- Research & Development, AbbVie Inc., North Chicago, Illinois 60064, United States
| | - Ahmad Y Sheikh
- Research & Development, AbbVie Inc., North Chicago, Illinois 60064, United States
| | - Shuang Chen
- Research & Development, AbbVie Inc., North Chicago, Illinois 60064, United States
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23
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Martins ICB, Larsen AS, Madsen AØ, Frederiksen OA, Correia A, Jensen KMØ, Jeppesen HS, Rades T. Unveiling polyamorphism and polyamorphic interconversions in pharmaceuticals: the peculiar case of hydrochlorothiazide. Chem Sci 2023; 14:11447-11455. [PMID: 37886102 PMCID: PMC10599472 DOI: 10.1039/d3sc02802j] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 09/22/2023] [Indexed: 10/28/2023] Open
Abstract
Polyamorphism has been a controversial and highly debated solid-state phenomenon in both material and pharmaceutical communities. Although some evidence of this fascinating phenomenon has been reported for several inorganic systems, and more recently also for a few organic compounds, the occurrence of polyamorphism is poorly understood and the molecular-level organization of polyamorphic forms is still unknown. Here we have investigated the occurrence of polyamorphism and polyamorphic interconversions in hydrochlorothiazide (HCT), using both experimental and computational methods. Three distinct HCT polyamorphs, presenting distinct physical and thermal stabilities as well as distinct relaxation properties, were systematically prepared using spray-drying (SD), quench-cooling (QC) and ball milling (BM) methods. HCT polyamorph II (obtained by QC) was found to be more physically stable than polyamorphs I and III (obtained by SD and BM, respectively). Furthermore, polyamorphs I and III could be converted into polyamorph II after QC, while polyamorph II did not convert to any other polyamorph after SD or BM. Molecular dynamics simulations show that HCT dihedral angle distributions are significantly different for polyamorphs I and II, which is postulated as a possible explanation for their different physicochemical properties.
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Affiliation(s)
- Inês C B Martins
- Department of Pharmacy, University of Copenhagen Universitetsparken 2 2100 Copenhagen Denmark
| | - Anders S Larsen
- Department of Pharmacy, University of Copenhagen Universitetsparken 2 2100 Copenhagen Denmark
| | - Anders Ø Madsen
- Department of Pharmacy, University of Copenhagen Universitetsparken 2 2100 Copenhagen Denmark
| | | | - Alexandra Correia
- Division of Pharmaceutical Chemistry and Technology, University of Helsinki Viikinkaari 5 00790 Helsinki Finland
| | - Kirsten M Ø Jensen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5 2100 Copenhagen Denmark
| | - Henrik S Jeppesen
- Deutsches Elektronen-Synchrotron (DESY) Notkestrasse 85 D-22607 Hamburg Germany
| | - Thomas Rades
- Department of Pharmacy, University of Copenhagen Universitetsparken 2 2100 Copenhagen Denmark
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24
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Greenberg M, Tulloch KM, Reynoso ME, Knapp JL, Sayem FH, Bartkus DD, Lum RH, LaFratta CN, Tanski JM, Anderson CM. Synthesis, Structure, and Photophysical Properties of Platinum Compounds with Thiophene-Derived Cyclohexyl Diimine Ligands. ACS OMEGA 2023; 8:38587-38596. [PMID: 37867690 PMCID: PMC10586441 DOI: 10.1021/acsomega.3c05567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Accepted: 09/21/2023] [Indexed: 10/24/2023]
Abstract
Platinum(II) and platinum(IV) compounds were prepared by the stereoselective and regioselective reactions of thiophene-derived cyclohexyl diimine C^N^N-ligands with [Pt2Me4(μ-SMe2)2]. Newly synthesized ligands were characterized by NMR spectroscopy and elemental analysis, and Pt(II)/Pt(IV) compounds were characterized by NMR spectroscopy, elemental analysis, high-resolution mass spectrometry, and single-crystal X-ray diffraction. UV-vis absorbance and photoluminescence measurements were performed on newly synthesized complexes, as well as structurally related Pt(II)/Pt(IV) compounds with benzene-derived cyclohexyl diimine ligands, in dichloromethane solution, as solids, and as 5% by weight PMMA-doped films. DFT and TD-DFT calculations were performed, and the results were compared with the observed spectroscopic properties of the newly synthesized complexes. X-ray total scattering measurements and real space pair distribution function analysis were performed on the synthesized complexes to examine the local- and intermediate-range atomic structures of the emissive solid states.
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Affiliation(s)
- Matthew
W. Greenberg
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road,Annandale-on-Hudson, New York 12504, United States
| | - Kris M. Tulloch
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road,Annandale-on-Hudson, New York 12504, United States
| | - Michelle E. Reynoso
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road,Annandale-on-Hudson, New York 12504, United States
| | - Juliette L. Knapp
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road,Annandale-on-Hudson, New York 12504, United States
| | - Farman H. Sayem
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road,Annandale-on-Hudson, New York 12504, United States
| | - Daphne D. Bartkus
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road,Annandale-on-Hudson, New York 12504, United States
| | - Ryan H. Lum
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road,Annandale-on-Hudson, New York 12504, United States
| | - Christopher N. LaFratta
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road,Annandale-on-Hudson, New York 12504, United States
| | - Joseph M. Tanski
- Department
of Chemistry, Vassar College, Poughkeepsie, New York 12604, United States
| | - Craig M. Anderson
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road,Annandale-on-Hudson, New York 12504, United States
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25
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Oyeneyin OE, Ibrahim A, Ipinloju N, Ademoyegun AJ, Ojo ND. Insight into the corrosion inhibiting potential and anticancer activity of 1-(4-methoxyphenyl)-5-methyl-N'-(2-oxoindolin-3-ylidene)-1H-1,2,3-triazole-4-carbohydrazide via computational approaches. J Biomol Struct Dyn 2023:1-18. [PMID: 37747068 DOI: 10.1080/07391102.2023.2260491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 09/13/2023] [Indexed: 09/26/2023]
Abstract
Cancer is a major health concern globally. Orthodox and traditional medicine have actively been explored to manage this disease. Also, corrosion is a natural catastrophe that weakens and deteriorates metallic structures and their alloys causing major structural failures and severe economic implications. Designing and exploring multi-functional materials are beneficial since they are adaptive to different fields including engineering and pharmaceutics. In this study, we examined the anti-corrosion and anti-cancer potentials of 1-(4-methoxyphenyl)-5-methyl-N'-(2-oxoindolin-3-ylidene)-1H-1,2,3-triazole-4-carbohydrazide (MAC) using computational approaches. The molecular reactivity descriptors and charge distribution parameters of MAC were studied in gas and water at density functional theory (DFT) at B3LYP/6-311++G(d,p) theory level. The binding and mechanism of interaction between MAC and iron surface was studied using Monte Carlo (MC) and molecular dynamics (MD) simulation in hydrochloric acid medium. From the DFT, MC, and MD simulations, it was observed that MAC interacted spontaneously with iron surface essentially via van der Waal and electrostatic interactions. The near-parallel alignment of the corrosion inhibitor on iron plane facilitates its adsorption and isolation of the metal surface from the acidic solution. Further, the compound was docked in the binding pocket of anaplastic lymphoma kinase (ALK: 4FNZ) protein to assess its anti-cancer potential. The binding score, pharmacokinetics, and drug-likeness of MAC were compared with the reference drug (Crizotinib). The MAC displayed binding scores of -5.729 kcal/mol while Crizotinib has -3.904 kcal/mol. MD simulation of the complexes revealed that MAC is more stable and exhibits more favourable hydrogen bonding with the ALK receptor's active site than Crizotinib.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Oluwatoba Emmanuel Oyeneyin
- Theoretical and Computational Chemistry Unit, Adekunle Ajasin University, Akungba-Akoko, Nigeria
- School of Chemistry and Physics, University of Kwazulu-Natal, Durban, South Africa
| | - Abdulwasiu Ibrahim
- Department of Biochemistry and Molecular Biology, Usmanu Danfodiyo University, Sokoto Nigeria
| | - Nureni Ipinloju
- Theoretical and Computational Chemistry Unit, Adekunle Ajasin University, Akungba-Akoko, Nigeria
| | - Adeniyi John Ademoyegun
- Theoretical and Computational Chemistry Unit, Adekunle Ajasin University, Akungba-Akoko, Nigeria
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26
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Di Mino C, Seel AG, Clancy AJ, Headen TF, Földes T, Rosta E, Sella A, Skipper NT. Strong structuring arising from weak cooperative O-H···π and C-H···O hydrogen bonding in benzene-methanol solution. Nat Commun 2023; 14:5900. [PMID: 37736749 PMCID: PMC10516861 DOI: 10.1038/s41467-023-41451-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 08/30/2023] [Indexed: 09/23/2023] Open
Abstract
Weak hydrogen bonds, such as O-H···π and C-H···O, are thought to direct biochemical assembly, molecular recognition, and chemical selectivity but are seldom observed in solution. We have used neutron diffraction combined with H/D isotopic substitution to obtain a detailed spatial and orientational picture of the structure of benzene-methanol mixtures. Our analysis reveals that methanol fully solvates and surrounds each benzene molecule. The expected O-H···π interaction is highly localised and directional, with the methanol hydroxyl bond aligned normal to the aromatic plane and the hydrogen at a distance of 2.30 Å from the ring centroid. Simultaneously, the tendency of methanol to form chain and cyclic motifs in the bulk liquid is manifest in a highly templated solvation structure in the plane of the ring. The methanol molecules surround the benzene so that the O-H bonds are coplanar with the aromatic ring while the oxygens interact with C-H groups through simultaneous bifurcated hydrogen bonds. This demonstrates that weak hydrogen bonding can modulate existing stronger interactions to give rise to highly ordered cooperative structural motifs that persist in the liquid phase.
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Affiliation(s)
- Camilla Di Mino
- Department of Physics and Astronomy, University College London, London, WC1E 6BT, UK
| | - Andrew G Seel
- ISIS Neutron and Muon Source, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Didcot, OX11 0QX, UK.
| | - Adam J Clancy
- Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK
| | - Thomas F Headen
- ISIS Neutron and Muon Source, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Didcot, OX11 0QX, UK
| | - Támas Földes
- Department of Physics and Astronomy, University College London, London, WC1E 6BT, UK
| | - Edina Rosta
- Department of Physics and Astronomy, University College London, London, WC1E 6BT, UK
| | - Andrea Sella
- Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK.
| | - Neal T Skipper
- Department of Physics and Astronomy, University College London, London, WC1E 6BT, UK.
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27
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Song Y, Gómez-Recio I, Ghoridi A, Igoa Saldaña F, Janisch D, Sassoye C, Dupuis V, Hrabovsky D, Ruiz-González ML, González-Calbet JM, Casale S, Zitolo A, Lassalle-Kaiser B, Laberty-Robert C, Portehault D. Heterostructured Cobalt Silicide Nanocrystals: Synthesis in Molten Salts, Ferromagnetism, and Electrocatalysis. J Am Chem Soc 2023; 145:19207-19217. [PMID: 37615605 DOI: 10.1021/jacs.3c01110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Abstract
Nanoscale heterostructures of covalent intermetallics should give birth to a wide range of interface-driven physical and chemical properties. Such a level of design however remains unattainable for most of these compounds, due to the difficulty to reach a crystalline order of covalent bonds at the moderate temperatures required for colloidal chemistry. Herein, we design heterostructured cobalt silicide nanoparticles to trigger magnetic and catalytic properties in silicon-based materials. Our strategy consists in controlling the diffusion of cobalt atoms into silicon nanoparticles, by reacting these particles in molten salts. By adjusting the temperature, we tune the conversion of the initial silicon particles toward homogeneous CoSi nanoparticles and core-shell nanoparticles made of a CoSi shell and a silicon-rich core. The increased interface-to-volume ratio of the CoSi component in the core-shell particles yields distinct properties compared to the bulk and homogeneous nanoparticles. First, the core-shell particles exhibit increased ferromagnetism, despite the bulk diamagnetic properties of cobalt monosilicide. Second, the core-shell nanoparticles act as efficient precatalysts for alkaline water oxidation, where the nanostructure is converted in situ into a layered cobalt silicon oxide/(oxy)hydroxide with high and stable oxygen evolution reaction (OER) electrocatalytic activity. This work demonstrates a route to design heterostructured nanocrystals of covalent intermetallic compounds and shows that these new structures exhibit very rich, yet poorly explored, interface-based physical properties and reactivity.
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Affiliation(s)
- Yang Song
- Sorbonne Université, CNRS, Laboratoire de Chimie de la Matière Condensée de Paris (CMCP), 4 place Jussieu, F-75005 Paris, France
| | - Isabel Gómez-Recio
- Sorbonne Université, CNRS, Laboratoire de Chimie de la Matière Condensée de Paris (CMCP), 4 place Jussieu, F-75005 Paris, France
| | - Anissa Ghoridi
- Sorbonne Université, CNRS, Laboratoire de Chimie de la Matière Condensée de Paris (CMCP), 4 place Jussieu, F-75005 Paris, France
| | - Fernando Igoa Saldaña
- Sorbonne Université, CNRS, Laboratoire de Chimie de la Matière Condensée de Paris (CMCP), 4 place Jussieu, F-75005 Paris, France
| | - Daniel Janisch
- Sorbonne Université, CNRS, Laboratoire de Chimie de la Matière Condensée de Paris (CMCP), 4 place Jussieu, F-75005 Paris, France
| | - Capucine Sassoye
- Sorbonne Université, CNRS, Laboratoire de Chimie de la Matière Condensée de Paris (CMCP), 4 place Jussieu, F-75005 Paris, France
| | - Vincent Dupuis
- Sorbonne Université, CNRS, Laboratoire de Physicochimie des Electrolytes et Nanosystèmes Interfaciaux (PHENIX), 4 place Jussieu, F-75005 Paris, France
| | - David Hrabovsky
- Sorbonne Université, CNRS, Institut de Minéralogie de Physique des Matériaux et de Cosmochimie (IMPMC), 4 place Jussieu, F-75005 Paris, France
| | - M Luisa Ruiz-González
- Dpto. de Química Inorgánica I, Facultad de Ciencias Químicas, Universidad Complutense, 28040 Madrid, Spain
| | - José M González-Calbet
- Dpto. de Química Inorgánica I, Facultad de Ciencias Químicas, Universidad Complutense, 28040 Madrid, Spain
| | - Sandra Casale
- Sorbonne Université, CNRS, Laboratoire de Réactivité de Surface (LRS), 4 place Jussieu, F-75005 Paris, France
| | - Andrea Zitolo
- Synchrotron SOLEIL, L'Orme des Merisiers, Départementale 128, 91190 Saint-Aubin, France
| | | | - Christel Laberty-Robert
- Sorbonne Université, CNRS, Laboratoire de Chimie de la Matière Condensée de Paris (CMCP), 4 place Jussieu, F-75005 Paris, France
| | - David Portehault
- Sorbonne Université, CNRS, Laboratoire de Chimie de la Matière Condensée de Paris (CMCP), 4 place Jussieu, F-75005 Paris, France
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28
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Saunders LK, Irving D, Chater PA, Diaz-Lopez M. Noncovalent bonding assessment by pair distribution function. Faraday Discuss 2023; 244:356-369. [PMID: 37158101 DOI: 10.1039/d2fd00159d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Noncovalent interactions are essential in the formation and properties of a diverse range of materials. However, reliably identifying noncovalent interactions remains challenging using conventional methods such as X-ray diffraction, especially in nanocrystalline, poorly crystalline or amorphous materials which lack long-range lattice periodicity. Here, we demonstrate the accurate determination of deviations in the local structure and tilting of aromatic rings during the temperature-induced first order structural transition in the 1 : 1 adduct of 4,4'-bipyridinium squarate (BIPY:SQA) from the low temperature form HAZFAP01 to high temperature HAZFAP07 by X-ray pair distribution function. This work demonstrates how pair distribution function analyses can improve our understanding of local structural deviations resulting from noncovalent bonds and guide the development of novel functional materials.
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Affiliation(s)
- Lucy K Saunders
- Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK.
| | - Daniel Irving
- Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK.
| | - Philip A Chater
- Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK.
| | - Maria Diaz-Lopez
- Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot OX11 0DE, UK.
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29
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Liu Y, Buckett MI, Jin GB, Burch MJ, Rosas AS, Thoma GM, Steinbach AJ. From Microanalysis to Atomic Electron Pair Distribution Function (ePDF): Adding Another Degree of Freedom in Analyzing Nanoscale Materials. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2023; 29:1750-1751. [PMID: 37613919 DOI: 10.1093/micmic/ozad067.905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Affiliation(s)
- Yang Liu
- Corporate Research Analytical Laboratory, 3M Company, St. Paul, MN, United States
| | - Mary I Buckett
- Corporate Research Analytical Laboratory, 3M Company, St. Paul, MN, United States
| | - Geng Bang Jin
- Corporate Research Analytical Laboratory, 3M Company, St. Paul, MN, United States
| | - Matthew J Burch
- Corporate Research Analytical Laboratory, 3M Company, St. Paul, MN, United States
| | - Alyssa S Rosas
- Corporate Research Materials Laboratory, 3M Company, St. Paul, MN, United States
| | - Grant M Thoma
- Corporate Research Materials Laboratory, 3M Company, St. Paul, MN, United States
| | - Andy J Steinbach
- Corporate Research Materials Laboratory, 3M Company, St. Paul, MN, United States
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30
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Ge Y, Huang B, Li L, Yun Q, Shi Z, Chen B, Zhang H. Structural Transformation of Unconventional-Phase Materials. ACS NANO 2023. [PMID: 37428980 DOI: 10.1021/acsnano.3c01922] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/12/2023]
Abstract
The structural transformation of materials, which involves the evolution of different structural features, including phase, composition, morphology, etc., under external conditions, represents an important fundamental phenomenon and has drawn substantial research interest. Recently, materials with unconventional phases that are different from their thermodynamically stable ones have been demonstrated to possess distinct properties and compelling functions and can further serve as starting materials for structural transformation studies. The identification and mechanism study of the structural transformation process of unconventional-phase starting materials can not only provide deep insights into their thermodynamic stability in potential applications but also offer effective approaches for the synthesis of other unconventional structures. Here, we briefly summarize the recent research progress on the structural transformation of some typical starting materials with various unconventional phases, including the metastable crystalline phase, amorphous phase, and heterophase, induced by different approaches. The importance of unconventional-phase starting materials in the structural modulation of resultant intermediates and products will be highlighted. The employment of diverse in situ/operando characterization techniques and theoretical simulations in studying the mechanism of the structural transformation process will also be introduced. Finally, we discuss the existing challenges in this emerging research field and provide some future research directions.
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Affiliation(s)
- Yiyao Ge
- School of Materials Science and Engineering, Peking University, Beijing 100871, China
| | - Biao Huang
- Department of Chemistry, City University of Hong Kong, Hong Kong, China
- Hong Kong Branch of National Precious Metals Material Engineering Research Center (NPMM), City University of Hong Kong, Hong Kong, China
| | - Lujiang Li
- Department of Chemistry, City University of Hong Kong, Hong Kong, China
| | - Qinbai Yun
- Department of Chemistry, City University of Hong Kong, Hong Kong, China
| | - Zhenyu Shi
- Department of Chemistry, City University of Hong Kong, Hong Kong, China
| | - Bo Chen
- Department of Chemistry, City University of Hong Kong, Hong Kong, China
| | - Hua Zhang
- Department of Chemistry, City University of Hong Kong, Hong Kong, China
- Hong Kong Branch of National Precious Metals Material Engineering Research Center (NPMM), City University of Hong Kong, Hong Kong, China
- Shenzhen Research Institute, City University of Hong Kong, Shenzhen 518057, China
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31
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He X. Fundamental Perspectives on the Electrochemical Water Applications of Metal-Organic Frameworks. NANO-MICRO LETTERS 2023; 15:148. [PMID: 37286907 PMCID: PMC10247659 DOI: 10.1007/s40820-023-01124-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 05/10/2023] [Indexed: 06/09/2023]
Abstract
HIGHLIGHTS The recent development and implementation of metal-organic frameworks (MOFs) and MOF-based materials in electrochemical water applications are reviewed. The critical factors that affect the performances of MOFs in the electrochemical reactions, sensing, and separations are highlighted. Advanced tools, such as pair distribution function analysis, are playing critical roles in unraveling the functioning mechanisms, including local structures and nanoconfined interactions. Metal-organic frameworks (MOFs), a family of highly porous materials possessing huge surface areas and feasible chemical tunability, are emerging as critical functional materials to solve the growing challenges associated with energy-water systems, such as water scarcity issues. In this contribution, the roles of MOFs are highlighted in electrochemical-based water applications (i.e., reactions, sensing, and separations), where MOF-based functional materials exhibit outstanding performances in detecting/removing pollutants, recovering resources, and harvesting energies from different water sources. Compared with the pristine MOFs, the efficiency and/or selectivity can be further enhanced via rational structural modulation of MOFs (e.g., partial metal substitution) or integration of MOFs with other functional materials (e.g., metal clusters and reduced graphene oxide). Several key factors/properties that affect the performances of MOF-based materials are also reviewed, including electronic structures, nanoconfined effects, stability, conductivity, and atomic structures. The advancement in the fundamental understanding of these key factors is expected to shed light on the functioning mechanisms of MOFs (e.g., charge transfer pathways and guest-host interactions), which will subsequently accelerate the integration of precisely designed MOFs into electrochemical architectures to achieve highly effective water remediation with optimized selectivity and long-term stability.
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Affiliation(s)
- Xiang He
- Department of Mechanical and Civil Engineering, Florida Institute of Technology, Melbourne, FL, 32901, USA.
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32
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Roelsgaard M, Kløve M, Christensen R, Bertelsen AD, Broge NLN, Kantor I, Sørensen DR, Dippel AC, Banerjee S, Zimmermann MV, Glaevecke P, Gutowski O, Jørgensen MRV, Iversen BB. A reactor for time-resolved X-ray studies of nucleation and growth during solvothermal synthesis. J Appl Crystallogr 2023; 56:581-588. [PMID: 37284256 PMCID: PMC10241040 DOI: 10.1107/s1600576723002339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Accepted: 03/09/2023] [Indexed: 06/08/2023] Open
Abstract
Understanding the nucleation and growth mechanisms of nanocrystals under hydro- and solvothermal conditions is key to tailoring functional nanomaterials. High-energy and high-flux synchrotron radiation is ideal for characterization by powder X-ray diffraction and X-ray total scattering in real time. Different versions of batch-type cell reactors have been employed in this work, exploiting the robustness of polyimide-coated fused quartz tubes with an inner diameter of 0.7 mm, as they can withstand pressures up to 250 bar and temperatures up to 723 K for several hours. Reported here are recent developments of the in situ setups available for general users on the P21.1 beamline at PETRA III and the DanMAX beamline at MAX IV to study nucleation and growth phenomena in solvothermal synthesis. It is shown that data suitable for both reciprocal-space Rietveld refinement and direct-space pair distribution function refinement can be obtained on a timescale of 4 ms.
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Affiliation(s)
- Martin Roelsgaard
- Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
- MAX IV Laboratory, Lund University, 224 84 Lund, Sweden
| | - Magnus Kløve
- Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
| | - Rasmus Christensen
- Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
| | - Andreas D. Bertelsen
- Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
| | - Nils L. N. Broge
- Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
| | - Innokenty Kantor
- MAX IV Laboratory, Lund University, 224 84 Lund, Sweden
- Department of Physics, Technical University of Denmark, 2880 Kongens Lyngby, Denmark
| | - Daniel Risskov Sørensen
- Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
- MAX IV Laboratory, Lund University, 224 84 Lund, Sweden
| | - Ann-Christin Dippel
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Soham Banerjee
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | | | - Philipp Glaevecke
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Olof Gutowski
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Mads Ry Vogel Jørgensen
- Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
- MAX IV Laboratory, Lund University, 224 84 Lund, Sweden
| | - Bo Brummerstedt Iversen
- Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
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33
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Zhang L, Wang N, Li Y. Design, synthesis, and application of some two-dimensional materials. Chem Sci 2023; 14:5266-5290. [PMID: 37234883 PMCID: PMC10208047 DOI: 10.1039/d3sc00487b] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Accepted: 04/18/2023] [Indexed: 05/28/2023] Open
Abstract
Two-dimensional (2D) materials are widely used as key components in the fields of energy conversion and storage, optoelectronics, catalysis, biomedicine, etc. To meet the practical needs, molecular structure design and aggregation process optimization have been systematically carried out. The intrinsic correlation between preparation methods and the characteristic properties is investigated. This review summarizes the recent research achievements of 2D materials in the aspect of molecular structure modification, aggregation regulation, characteristic properties, and device applications. The design strategies to fabricate functional 2D materials starting from precursor molecules are introduced in detail referring to organic synthetic chemistry and self-assembly technology. It provides important research ideas for the design and synthesis of related materials.
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Affiliation(s)
- Luwei Zhang
- Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion, Science Center for Material Creation and Energy Conversion, School of Chemistry and Chemical Engineering, Shandong University 27 Shanda Nanlu Jinan 250100 P. R. China
| | - Ning Wang
- Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion, Science Center for Material Creation and Energy Conversion, School of Chemistry and Chemical Engineering, Shandong University 27 Shanda Nanlu Jinan 250100 P. R. China
| | - Yuliang Li
- Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion, Science Center for Material Creation and Energy Conversion, School of Chemistry and Chemical Engineering, Shandong University 27 Shanda Nanlu Jinan 250100 P. R. China
- Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences Zhongguancun North First Street 2 Beijing 100190 P. R. China
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34
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Ji W, Kim DM, Posson BM, Carlson KJ, Chew AC, Chew AJ, Hossain M, Mojica AF, Ottoes SM, Tran DV, Greenberg MW, Hamachi LS. COF-300 synthesis and colloidal stabilization with substituted benzoic acids. RSC Adv 2023; 13:14484-14493. [PMID: 37188250 PMCID: PMC10176042 DOI: 10.1039/d3ra02202a] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 05/03/2023] [Indexed: 05/17/2023] Open
Abstract
Colloidal covalent organic framework (COF) synthesis enables morphological control of crystallite size and shape. Despite numerous examples of 2D COF colloids with various linkage chemistries, 3D imine-linked COF colloids are more challenging synthetic targets. Here we report a rapid (15 min-5 day) synthesis of hydrated COF-300 colloids ranging in length (251 nm-4.6 μm) with high crystallinity and moderate surface areas (150 m2 g-1). These materials are characterized by pair distribution function analysis, which is consistent with the known average structure for this material alongside different degrees of atomic disorder at different length scales. Additionally, we investigate a series of para-substituted benzoic acid catalysts, finding that 4-cyano and 4-fluoro substituted benzoic acids produce the largest COF-300 crystallites with lengths of 1-2 μm. In situ dynamic light scattering experiments are used to assess time to nucleation in conjunction with 1H NMR model compound studies to probe the impact of catalyst acidity on the imine condensation equilibrium. We observe cationically stabilized colloids with a zeta potential of up to +14.35 mV in benzonitrile as a result of the carboxylic acid catalyst protonating surface amine groups. We leverage these surface chemistry insights to synthesize small COF-300 colloids using sterically hindered diortho-substituted carboxylic acid catalysts. This fundamental study of COF-300 colloid synthesis and surface chemistry will provide new insights into the role of acid catalysts both as imine condensation catalysts and as colloid stabilizing agents.
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Affiliation(s)
- Woojung Ji
- Department of Chemistry, University of Michigan Ann Arbor 48109 MI USA
| | - Dean M Kim
- Department of Chemistry and Biochemistry, California Polytechnic State University San Luis Obispo 93407 CA USA
| | - Brendan M Posson
- Department of Chemistry and Biochemistry, California Polytechnic State University San Luis Obispo 93407 CA USA
| | - Kyla J Carlson
- Department of Materials Engineering, California Polytechnic State University San Luis Obispo CA 93407 USA
| | - Alison C Chew
- Department of Chemistry and Biochemistry, California Polytechnic State University San Luis Obispo 93407 CA USA
- Department of Materials Engineering, California Polytechnic State University San Luis Obispo CA 93407 USA
| | - Alyssa J Chew
- Department of Chemistry and Biochemistry, California Polytechnic State University San Luis Obispo 93407 CA USA
| | - Meherin Hossain
- Department of Chemistry and Biochemistry, Bard College Annandale-on-Hudson NY 12504 USA
| | - Alexis F Mojica
- Department of Chemistry and Biochemistry, California Polytechnic State University San Luis Obispo 93407 CA USA
| | - Sachi M Ottoes
- Department of Chemistry and Biochemistry, California Polytechnic State University San Luis Obispo 93407 CA USA
| | - Donna V Tran
- Department of Chemistry and Biochemistry, California Polytechnic State University San Luis Obispo 93407 CA USA
| | - Matthew W Greenberg
- Department of Chemistry and Biochemistry, Bard College Annandale-on-Hudson NY 12504 USA
| | - Leslie S Hamachi
- Department of Chemistry and Biochemistry, California Polytechnic State University San Luis Obispo 93407 CA USA
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35
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Pokratath R, Lermusiaux L, Checchia S, Mathew JP, Cooper SR, Mathiesen JK, Landaburu G, Banerjee S, Tao S, Reichholf N, Billinge SJL, Abécassis B, Jensen KMØ, De Roo J. An Amorphous Phase Precedes Crystallization: Unraveling the Colloidal Synthesis of Zirconium Oxide Nanocrystals. ACS NANO 2023; 17:8796-8806. [PMID: 37093055 PMCID: PMC10173684 DOI: 10.1021/acsnano.3c02149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
One can nowadays readily generate monodisperse colloidal nanocrystals, but the underlying mechanism of nucleation and growth is still a matter of intense debate. Here, we combine X-ray pair distribution function (PDF) analysis, small-angle X-ray scattering (SAXS), nuclear magnetic resonance (NMR), and transmission electron microscopy (TEM) to investigate the nucleation and growth of zirconia nanocrystals from zirconium chloride and zirconium isopropoxide at 340 °C, in the presence of surfactant (tri-n-octylphosphine oxide). Through E1 elimination, precursor conversion leads to the formation of small amorphous particles (less than 2 nm in diameter). Over the course of the reaction, the total particle concentration decreases while the concentration of nanocrystals stays constant after a sudden increase (nucleation). Kinetic modeling suggests that amorphous particles nucleate into nanocrystals through a second order process and they are also the source of nanocrystal growth. There is no evidence for a soluble monomer. The nonclassical nucleation is related to a precursor decomposition rate that is an order of magnitude higher than the observed crystallization rate. Using different zirconium precursors (e.g., ZrBr4 or Zr(OtBu)4), we can tune the precursor decomposition rate and thus control the nanocrystal size. We expect these findings to help researchers in the further development of colloidal syntheses.
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Affiliation(s)
- Rohan Pokratath
- Department of Chemistry, University of Basel, Mattenstrasse 24a, 4058 Basel, Switzerland
| | - Laurent Lermusiaux
- ENSL, CNRS, Laboratoire de Chimie UMR 5182, 46 allée d'Italie, 69364 Lyon, France
| | - Stefano Checchia
- ESRF Synchrotron, ID15A Beamline, 71 Avenue des Martyrs, CS40220, 38043 Grenoble, France
| | | | - Susan Rudd Cooper
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen Ø, Denmark
| | - Jette Katja Mathiesen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen Ø, Denmark
- Department of Physics, Technical University of Denmark, Fysikvej Bldg. 312, 2800 Kgs. Lyngby, Denmark
| | - Guillaume Landaburu
- ENSL, CNRS, Laboratoire de Chimie UMR 5182, 46 allée d'Italie, 69364 Lyon, France
| | - Soham Banerjee
- Deutsches Elektronen-Synchrotron DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Songsheng Tao
- Applied Physics and Applied Mathematics Department, Columbia University, New York, New York 10027, United States
| | - Nico Reichholf
- Department of Chemistry, University of Basel, Mattenstrasse 24a, 4058 Basel, Switzerland
| | - Simon J L Billinge
- Applied Physics and Applied Mathematics Department, Columbia University, New York, New York 10027, United States
| | - Benjamin Abécassis
- ENSL, CNRS, Laboratoire de Chimie UMR 5182, 46 allée d'Italie, 69364 Lyon, France
| | - Kirsten M Ø Jensen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen Ø, Denmark
| | - Jonathan De Roo
- Department of Chemistry, University of Basel, Mattenstrasse 24a, 4058 Basel, Switzerland
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36
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Di Mino C, Clancy AJ, Sella A, Howard CA, Headen TF, Seel AG, Skipper NT. Weak Interactions in Dimethyl Sulfoxide (DMSO)-Tertiary Amide Solutions: The Versatility of DMSO as a Solvent. J Phys Chem B 2023; 127:1357-1366. [PMID: 36752593 PMCID: PMC9940205 DOI: 10.1021/acs.jpcb.2c07155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
The structures of equimolar mixtures of the commonly used polar aprotic solvents dimethylformamide (DMF) and dimethylacetamide (DMAc) in dimethyl sulfoxide (DMSO) have been investigated via neutron diffraction augmented by extensive hydrogen/deuterium isotopic substitution. Detailed 3-dimensional structural models of these solutions have been derived from the neutron data via Empirical Potential Structure Refinement (EPSR). The intermolecular center-of-mass (CoM) distributions show that the first coordination shell of the amides comprises ∼13-14 neighbors, of which approximately half are DMSO. In spite of this near ideal coordination shell mixing, the changes to the amide-amide structure are found to be relatively subtle when compared to the pure liquids. Analysis of specific intermolecular atom-atom correlations allows quantitative interpretation of the competition between weak interactions in the solution. We find a hierarchy of formic and methyl C-H···O hydrogen bonds forms the dominant local motifs, with peak positions in the range of 2.5-3.0 Å. We also observe a rich variety of steric and dispersion interactions, including those involving the O═C-N amide π-backbones. This detailed insight into the structural landscape of these important liquids demonstrates the versatility of DMSO as a solvent and the remarkable sensitivity of neutron diffraction, which is critical for understanding weak intermolecular interactions at the nanoscale and thereby tailoring solvent properties to specific applications.
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Affiliation(s)
- Camilla Di Mino
- Department
of Physics and Astronomy, University College
London, Gower Street, LondonWC1E
6BT, U.K.
| | - Adam J. Clancy
- Department
of Chemistry, University College London, 20 Gordon Street, LondonWC1H 0AJ, U.K.
| | - Andrea Sella
- Department
of Chemistry, University College London, 20 Gordon Street, LondonWC1H 0AJ, U.K.
| | - Christopher A. Howard
- Department
of Physics and Astronomy, University College
London, Gower Street, LondonWC1E
6BT, U.K.
| | - Thomas F. Headen
- ISIS
Neutron and Muon Source, Science and Technology
Facilities Council, Rutherford Appleton Laboratory, Harwell Campus, DidcotOX11 0QX, U.K.
| | - Andrew G. Seel
- ISIS
Neutron and Muon Source, Science and Technology
Facilities Council, Rutherford Appleton Laboratory, Harwell Campus, DidcotOX11 0QX, U.K.,E-mail: . Phone: +44 (0)1793 547500
| | - Neal T. Skipper
- Department
of Physics and Astronomy, University College
London, Gower Street, LondonWC1E
6BT, U.K.,E-mail: . Phone: +44 (0)207 679 3526
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37
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Desgranges L, Baldinozzi G, Fischer HE, Lander GH. Temperature-dependent anisotropy in the bond lengths of UO 2as a result of phonon-induced atomic correlations. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2023; 35:10LT01. [PMID: 36580678 DOI: 10.1088/1361-648x/acaf1d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 12/29/2022] [Indexed: 06/17/2023]
Abstract
Previous experiments on cubic UO2have suggested that the temperature dependences of the nearest-neighbour U-O and U-U distances aredifferent. We have acquired total-scattering neutron diffraction patterns out toQ = 23.5 Å-1for50<T<1023 K and produced via Fourier transform a pair-distribution functionPDF(r). ThePDF(r)shows quite clearly thatr(U-O), defined by the maximum of the U-O peak in thePDF(r), does in fact decrease with increasing temperature, whereasr(U-U)follows the lattice expansion as expected. We also observe that ther(U-O)contraction accelerates continuously aboveT ≈ 400 K, consistent with earlier experiments by others. Furthermore, by analysing the eigenvectors of the phonon modes, we show that theΔ5(TO1)phonon tends to separate the eight equivalent U-O distances into six shorter and two longer distances, where the longer pair contribute to a high-rtail observed in the U-O distance distribution becoming increasingly anisotropic at higherT. These results have significance for a wide range of materials in which heavy and light atoms are combined in a simple atomic structure.
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Affiliation(s)
| | - Gianguido Baldinozzi
- CentraleSupélec, CNRS, SPMS, Université Paris-Saclay, 91190 Gif-sur-Yvette, France
| | - Henry E Fischer
- Institut Laue Langevin, 71 avenue des Martyrs, CS 20156, 38042 Grenoble cedex 9, France
| | - Gerard H Lander
- Institut Laue Langevin, 71 avenue des Martyrs, CS 20156, 38042 Grenoble cedex 9, France
- European Commission, Joint Research Centre (JRC), Postfach 2340, 76125 Karlsruhe, Germany
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38
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Qiao M, Wang M, Meng X, Zhu H, Zhang Y, Ji Z, Zhao Y, Liu J, Wang S, Guo X, Wang J, Bi J, Zhang P, Di Tommaso D, Li F, Yuan J. Fine Analysis of the Component Effect on the Microstructure of LiCl Solution. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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39
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Leist C, He M, Liu X, Kaiser U, Qi H. Deep-Learning Pipeline for Statistical Quantification of Amorphous Two-Dimensional Materials. ACS NANO 2022; 16:20488-20496. [PMID: 36484533 DOI: 10.1021/acsnano.2c06807] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Aberration-corrected transmission electron microscopy enables imaging of two-dimensional (2D) materials with atomic resolution. However, dissecting the short-range-ordered structures in radiation-sensitive and amorphous 2D materials remains a significant challenge due to low atomic contrast and laborious manual evaluation. Here, we imaged carbon-based 2D materials with strong contrast, which is enabled by chromatic and spherical aberration correction at a low acceleration voltage. By constructing a deep-learning pipeline, atomic registry in amorphous 2D materials can be precisely determined, providing access to a full spectrum of quantitative data sets, including bond length/angle distribution, pair distribution function, and real-space polygon mapping. Accurate segmentation of micropores and surface contamination, together with robustness against background inhomogeneity, guaranteed the quantification validity in complex experimental images. The automated image analysis provides quantitative metrics with high efficiency and throughput, which may shed light on the structural understanding of short-range-ordered structures. In addition, the convolutional neural network can be readily generalized to crystalline materials, allowing for automatic defect identification and strain mapping.
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Affiliation(s)
- Christopher Leist
- Central Facility for Electron Microscopy, Materials Science Electron Microscopy, Universität Ulm, 89081Ulm, Germany
| | - Meng He
- College of Materials Science and Engineering, Xi'an Shiyou University, 710065Xi'an, People's Republic of China
| | - Xue Liu
- School of Materials Science and Engineering, Xi'an Jiaotong University, 710049Xi'an, People's Republic of China
| | - Ute Kaiser
- Central Facility for Electron Microscopy, Materials Science Electron Microscopy, Universität Ulm, 89081Ulm, Germany
| | - Haoyuan Qi
- Faculty of Chemistry and Food Chemistry & Center for Advancing Electronics Dresden (cfaed), Technische Universität Dresden, 01062Dresden, Germany
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40
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Zhou X, Zhou Y, Deng Y, Zhang Y. Molecular Dynamics Study on Structure, Vibrational Properties, and Transport Coefficients of Liquid Alumina. MATERIALS (BASEL, SWITZERLAND) 2022; 15:8370. [PMID: 36499865 PMCID: PMC9736481 DOI: 10.3390/ma15238370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 11/20/2022] [Accepted: 11/22/2022] [Indexed: 06/17/2023]
Abstract
The structure, vibrational density of states, and transport coefficients of liquid alumina were studied using molecular dynamics simulations. At the temperature of 2500 K, 3000 K, 3500 K, and 4000 K, systems with three different densities were constructed, respectively, including the configurations with densities of 2.81 g/cm3 and 3.17 g/cm3, and the relaxed ones with nearly zero pressure at each temperature. With the changes in temperature or density, the transformations on the structural, vibrational and transport properties were discussed. The Born-Mayer-Huggins type of atomic interactions was used, with newly optimized parameters. The analysis of the interatomic correlations indicated that the short-range order of liquid alumina was mainly constructed by AlO4 tetrahedra, also a certain number of AlO3 and AlO5 was present. Meanwhile, the structural transitions on the elemental units occurred as either the temperature or density increased. Two primary frequency bands were observed in each vibrational density of states spectrum, with the higher frequency bands produced by the O atom vibrations, and the lower frequency ones generated by the Al atom vibrations. Self-diffusion coefficients were estimated using the linear behavior of the mean-squared displacement at long time, while by using the Green-Kubo relation during equilibrium molecular dynamics simulations, thermal conductivities and viscosities were calculated. Significantly, the viscosity at 2500 K with a density of 2.81 g/cm3 was equal to 25.23 mPa s, which was very close to the experimental finding.
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Affiliation(s)
- Xiaolin Zhou
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin 150080, China
- Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin 150080, China
| | - Yufeng Zhou
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin 150080, China
- Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin 150080, China
| | - Ya Deng
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin 150080, China
- Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin 150080, China
| | - Yumin Zhang
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin 150080, China
- Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin 150080, China
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41
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Xing J, Wang W, Huang S, Du M, Huang B, Liu Y, He S, Yao T, Li S, Liu Y. Effects of Grain Refinement and Thermal Aging on Atomic Scale Local Structures of Ultra-Fine Explosives by X-ray Total Scattering. MATERIALS (BASEL, SWITZERLAND) 2022; 15:6835. [PMID: 36234175 PMCID: PMC9572120 DOI: 10.3390/ma15196835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 09/27/2022] [Accepted: 09/28/2022] [Indexed: 06/16/2023]
Abstract
The atomic scale local structures affect the initiation performance of ultra-fine explosives according to the stimulation results of hot spot formation. However, the experimental characterization of local structures in ultra-fine explosives has been rarely reported, due to the difficulty in application of characterization methods having both high resolution in and small damage to unstable organic explosive materials. In this work, X-ray total scattering was explored to investigate the atomic scale local distortion of two widely applicable ultra-fine explosives, LLM-105 and HNS. The experimental spectra of atomic pair distribution function (PDF) derived from scattering results were fitted by assuming rigid ring structures in molecules. The effects of grain refinement and thermal aging on the atomic scale local structure were investigated, and the changes in both the length of covalent bonds have been identified. Results indicate that by decreasing the particle size of LLM-105 and HNS from hundreds of microns to hundreds of nanometers, the crystal structures remain, whereas the molecular configuration slightly changes and the degree of structural disorder increases. For example, the average length of covalent bonds in LLM-105 reduces from 1.25 Å to 1.15 Å, whereas that in HNS increases from 1.25 Å to 1.30 Å, which is possibly related to the incomplete crystallization process and internal stress. After thermal aging of ultra-fine LLM-105 and HNS, the degree of structural disorder decreases, and the distortion in molecules formed in the synthesis process gradually healed. The average length of covalent bonds in LLM-105 increases from 1.15 Å to 1.27 Å, whereas that in HNS reduces from 1.30 Å to 1.20 Å. The possible reason is that the atomic vibration in the molecule intensifies during the heat aging treatment, and the internal stress was released through changes in molecular configuration, and thus the atomic scale distortion gradually heals. The characterization method and findings in local structures obtained in this work may pave the path to deeply understand the relationship between the defects and performance of ultra-fine explosives.
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Affiliation(s)
- Jiangtao Xing
- College of Ordnance Engineering, Naval University of Engineering, Wuhan 430033, China
| | - Weili Wang
- College of Ordnance Engineering, Naval University of Engineering, Wuhan 430033, China
| | - Shiliang Huang
- China Academy of Engineering Physics, Institute of Chemical Materials, Mianyang 621900, China
| | - Maohua Du
- College of Ordnance Engineering, Naval University of Engineering, Wuhan 430033, China
| | - Bing Huang
- China Academy of Engineering Physics, Institute of Chemical Materials, Mianyang 621900, China
| | - Yousong Liu
- China Academy of Engineering Physics, Institute of Chemical Materials, Mianyang 621900, China
| | - Shanshan He
- China Academy of Engineering Physics, Institute of Chemical Materials, Mianyang 621900, China
| | - Tianle Yao
- Navy Research Institute, Beijing 100072, China
| | - Shichun Li
- China Academy of Engineering Physics, Institute of Chemical Materials, Mianyang 621900, China
| | - Yu Liu
- China Academy of Engineering Physics, Institute of Chemical Materials, Mianyang 621900, China
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42
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Xiang G, Luo X, Cao T, Zhang A, Yu H. Atomic Diffusion and Crystal Structure Evolution at the Fe-Ti Interface: Molecular Dynamics Simulations. MATERIALS (BASEL, SWITZERLAND) 2022; 15:6302. [PMID: 36143614 PMCID: PMC9504233 DOI: 10.3390/ma15186302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 09/04/2022] [Accepted: 09/07/2022] [Indexed: 06/16/2023]
Abstract
The diffusion bonding method is one of the most essential manufacturing technologies for Ti-steel composite plates. In this paper, the atomic diffusion behavior at the Fe-Ti interface during the bonding process of Ti-steel composite plates is studied using classical diffusion theory and molecular dynamics (MD) simulation. Henceforth, the diffusion mechanism of Fe and Ti atoms at the bonding interface is obtained at the atomic scale. The results show that Fe and Ti atoms diffused deeply into each other during the diffusion process. This behavior consequently increased the thickness of the diffusion layer. Moreover, the diffusion quantity of Fe atoms to the Ti side was much greater than that of Ti atoms to the Fe side. Large plastic deformation and shear strain occurred at the diffusion interface during diffusion. The crystal structure of the diffusion zone was damaged and defects were generated, which was beneficial to the diffusion behavior of the interface atoms. As the diffusion time and temperature increased, the shear strain of the atoms at the interface also increased. Furthermore, there is a relationship between the mutual diffusion coefficient and the temperature. Subsequently, after the diffusion temperature was raised, the mutual diffusion coefficient and atomic disorder (Fe atom and Ti atom) increased accordingly.
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Affiliation(s)
- Guojin Xiang
- School of Mechanical Engineering, Yanshan University, Qinhuangdao 066000, China
- Pangang Group Research Institute Co., Ltd., Panzhihua 617000, China
| | - Xu Luo
- Pangang Group Research Institute Co., Ltd., Panzhihua 617000, China
| | - Tianxu Cao
- School of Mechanical Engineering, Yanshan University, Qinhuangdao 066000, China
| | - Ankang Zhang
- School of Mechanical Engineering, Yanshan University, Qinhuangdao 066000, China
| | - Hui Yu
- School of Mechanical Engineering, Yanshan University, Qinhuangdao 066000, China
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43
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Saura-Múzquiz M, Marlton FP, Mullens BG, Manjón-Sanz AM, Neuefeind JC, Everett M, Brand HEA, Mondal S, Vaitheeswaran G, Kennedy BJ. Understanding the Re-entrant Phase Transition in a Non-magnetic Scheelite. J Am Chem Soc 2022; 144:15612-15621. [PMID: 35994733 DOI: 10.1021/jacs.2c05620] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The stereochemical activity of lone pair electrons plays a central role in determining the structural and electronic properties of both chemically simple materials such as H2O, as well as more complex condensed phases such as photocatalysts or thermoelectrics. TlReO4 is a rare example of a non-magnetic material exhibiting a re-entrant phase transition and emphanitic behavior in the long-range structure. Here, we describe the role of the Tl+ 6s2 lone pair electrons in these unusual phase transitions and illustrate its tunability by chemical doping, which has broad implications for functional materials containing lone pair bearing cations. First-principles density functional calculations clearly show the contribution of the Tl+ 6s2 in the valence band region. Local structure analysis, via neutron total scattering, revealed that changes in the long-range structure of TlReO4 occur due to changes in the correlation length of the Tl+ lone pairs. This has a significant effect on the anion interactions, with long-range ordered lone pairs creating a more densely packed structure. This resulted in a trade-off between anionic repulsions and lone pair correlations that lead to symmetry lowering upon heating in the long-range structure, whereby lattice expansion was necessary for the Tl+ lone pairs to become highly correlated. Similarly, introducing lattice expansion through chemical pressure allowed long-range lone pair correlations to occur over a wider temperature range, demonstrating a method for tuning the energy landscape of lone pair containing functional materials.
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Affiliation(s)
- Matilde Saura-Múzquiz
- School of Chemistry, University of Sydney, F11, Sydney, New South Wales 2006, Australia
| | - Frederick P Marlton
- School of Chemistry, University of Sydney, F11, Sydney, New South Wales 2006, Australia
| | - Bryce G Mullens
- School of Chemistry, University of Sydney, F11, Sydney, New South Wales 2006, Australia
| | - Alicia María Manjón-Sanz
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Joerg C Neuefeind
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Michelle Everett
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Helen E A Brand
- Australian Synchrotron, Australian Nuclear Science and Technology Organisation, 800 Blackburn Road, Clayton, Victoria 3168, Australia
| | - Subrata Mondal
- Advanced Centre of Research in High Energy Materials (ACRHEM), University of Hyderabad, Prof. C. R. Rao Road, Gachibowli, Hyderabad 500046, Telangana, India
| | - Ganapathy Vaitheeswaran
- School of Physics, University of Hyderabad, Prof. C. R. Rao Road, Gachibowli, Hyderabad 500046, Telangana, India
| | - Brendan J Kennedy
- School of Chemistry, University of Sydney, F11, Sydney, New South Wales 2006, Australia
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Partially Ordered Lanthanide Carboxylates with a Highly Adaptable 1D Polymeric Structure. Polymers (Basel) 2022; 14:polym14163328. [PMID: 36015584 PMCID: PMC9414554 DOI: 10.3390/polym14163328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/08/2022] [Accepted: 08/12/2022] [Indexed: 11/17/2022] Open
Abstract
A new family of 14 isostructural [Ln(piv)3(en)]∞ lanthanide pivalate (piv−, 2,2-dimethylpropanoate) complexes with ethylenediamine (en) was synthesized by a topology-preserving transformation from 1D coordination polymers [Ln(piv)3]∞. The crystal structures of the compounds were determined by single-crystal and powder X-ray diffraction, which demonstrated that despite the regular ligand arrangement within the chains, the latter are intricately packed within the partially ordered crystal, as only two of four ligands are strictly bound by the translational symmetry. The peculiarities of the lanthanide coordination environment were explored by total X-ray scattering with pair distribution function analysis. Periodic DFT calculations revealed the chain stabilization by intrachain H-bonds and weak interchain interactions. Noticeably, the energy difference was infinitesimally small even between the two considered extreme variants of ordered packing, which is in line with the disturbed packing order of the chains. The luminescent properties of Eu and Tb complexes were investigated in order to prove the energy transfer between lanthanide ions within the heterometallic complex. This opens up the prospect of creating new materials for optical applications. The heterometallic compound Eu0.05Tb0.95(piv)3(en) was synthesized, and was found to demonstrate temperature-dependent luminescence with a linear dependence of the thermometric parameter I(Eu)/I(Tb) within the temperature range from −80 °C to 80 °C, and had a maximum relative sensitivity value of 0.2%/K.
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45
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Tsymbarenko D, Grebenyuk D, Burlakova M, Zobel M. Quick and robust PDF data acquisition using a laboratory single-crystal X-ray diffractometer for study of polynuclear lanthanide complexes in solid form and in solution. J Appl Crystallogr 2022. [DOI: 10.1107/s1600576722005878] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Self-assembled polynuclear lanthanide hydroxo complexes are important objects in the reticular chemistry approach to the design of various functional materials. Revealing their structure in the solid state and understanding the molecular mechanism of self-assembly in solution require a universal and reliable structural method. Pair distribution function (PDF) analysis is a powerful technique which enables structural insight for a wide range of crystalline and amorphous materials on the nanoscale, but commonly measurements are performed at synchrotron X-ray sources or on specially designed laboratory diffractometers. In the present paper, a standard Bruker D8 QUEST single-crystal X-ray diffractometer equipped with a micro-focus Mo tube and CMOS Photon III detector was adapted to measure PDF data of high quality with Q
max = 16.97 Å–1 for solid and liquid samples. An improved data collection strategy and the original data reduction software FormagiX enable calibration and azimuthal full-frame integration of 2D frames, delivering reliable PDFs up to 80 Å with instrumental parameters Q
damp = 0.018 Å−1 and Q
broad = 0.010 Å−1. The effectiveness of the developed approach was demonstrated with reference samples and real-case studies of tetranuclear lanthanide hydroxocarboxylates in solid form and in solution.
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46
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Zimmerli NK, Müller CR, Abdala PM. Deciphering the structure of heterogeneous catalysts across scales using pair distribution function analysis. TRENDS IN CHEMISTRY 2022. [DOI: 10.1016/j.trechm.2022.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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47
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Chepkemboi C, Jorgensen K, Sato J, Laurita G. Strategies and Considerations for Least-Squares Analysis of Total Scattering Data. ACS OMEGA 2022; 7:14402-14411. [PMID: 35572759 PMCID: PMC9089679 DOI: 10.1021/acsomega.2c01285] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 04/06/2022] [Indexed: 06/15/2023]
Abstract
The process of least-squares analysis has been applied for decades in the field of crystallography. Here, we discuss the application of this process to total scattering data, primarily in the combination of least-squares Rietveld refinements and fitting of the atomic pair distribution function (PDF). While these two approaches use the same framework, the interpretation of results from least-squares fitting of PDF data should be done with caution through carefully constructed analysis approaches. We provide strategies and considerations for applying least-squares analysis to total scattering data, combining both crystallographic Rietveld and fitting of PDF data, given in context with recent examples from the literature. This perspective is aimed to be an accessible document for those new to the total scattering approach, as well as a reflective framework for the total scattering expert.
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48
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Scholz T, Schneider C, Terban MW, Deng Z, Eger R, Etter M, Dinnebier RE, Canepa P, Lotsch BV. Superionic Conduction in the Plastic Crystal Polymorph of Na 4P 2S 6. ACS ENERGY LETTERS 2022; 7:1403-1411. [PMID: 35434367 PMCID: PMC9008513 DOI: 10.1021/acsenergylett.1c02815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 03/07/2022] [Indexed: 06/14/2023]
Abstract
Sodium thiophosphates are promising materials for large-scale energy storage applications benefiting from high ionic conductivities and the geopolitical abundance of the elements. A representative of this class is Na4P2S6, which currently shows two known polymorphs-α and β. This work describes a third polymorph of Na4P2S6, γ, that forms above 580 °C, exhibits fast-ion conduction with low activation energy, and is mechanically soft. Based on high-temperature diffraction, pair distribution function analysis, thermal analysis, impedance spectroscopy, and ab initio molecular dynamics calculations, the γ-Na4P2S6 phase is identified to be a plastic crystal characterized by dynamic orientational disorder of the P2S6 4- anions translationally fixed on a body-centered cubic lattice. The prospect of stabilizing plastic crystals at operating temperatures of solid-state batteries, with benefits from their high ionic conductivities and mechanical properties, could have a strong impact in the field of solid-state battery research.
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Affiliation(s)
- Tanja Scholz
- Max
Planck Institute for Solid State Research, Heisenbergstraße 1, 70569 Stuttgart, Germany
| | - Christian Schneider
- Max
Planck Institute for Solid State Research, Heisenbergstraße 1, 70569 Stuttgart, Germany
| | - Maxwell W. Terban
- Max
Planck Institute for Solid State Research, Heisenbergstraße 1, 70569 Stuttgart, Germany
| | - Zeyu Deng
- Department
of Materials Science and Engineering, National
University of Singapore, 9 Engineering Drive 1, 117575 Singapore
| | - Roland Eger
- Max
Planck Institute for Solid State Research, Heisenbergstraße 1, 70569 Stuttgart, Germany
| | - Martin Etter
- Deutsches
Elektronensynchrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany
| | - Robert E. Dinnebier
- Max
Planck Institute for Solid State Research, Heisenbergstraße 1, 70569 Stuttgart, Germany
| | - Pieremanuele Canepa
- Department
of Materials Science and Engineering, National
University of Singapore, 9 Engineering Drive 1, 117575 Singapore
- Department
of Chemical and Biomolecular Engineering, National University of Singapore, Engineering Drive 4, 117585 Singapore
| | - Bettina V. Lotsch
- Max
Planck Institute for Solid State Research, Heisenbergstraße 1, 70569 Stuttgart, Germany
- LMU
Munich, Butenandtstraße
5-13, 81377 Munich, Germany
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49
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Effects of Structural and Microstructural Features on the Total Scattering Pattern of Nanocrystalline Materials. NANOMATERIALS 2022; 12:nano12081252. [PMID: 35457960 PMCID: PMC9030889 DOI: 10.3390/nano12081252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/03/2022] [Accepted: 04/04/2022] [Indexed: 12/10/2022]
Abstract
Atomic- and nanometer-scale features of nanomaterials have a strong influence on their chemical and physical properties and a detailed description of these elements is a crucial step in their characterization. Total scattering methods, in real and reciprocal spaces, have been established as fundamental techniques to retrieve this information. Although the impact of microstructural features, such as defectiveness of different kinds, has been extensively studied in reciprocal space, disentangling these effects from size- and morphology-induced properties, upon downsizing, is not a trivial task. Additionally, once the experimental pattern is Fourier transformed to calculate the pair distribution function, the direct fingerprint of structural and microstructural features is severely lost and no modification of the histogram of interatomic distances derived therefrom is clearly discussed nor considered in the currently available protocols. Hereby, starting from atomistic models of a prototypical system (cadmium selenide), we simulate multiple effects on the atomic pair distribution function, obtained from reciprocal space patterns computed through the Debye scattering equation. Size and size dispersion effects, as well as different structures, morphologies, and their interplay with several kinds of planar defects, are explored, aiming at identifying the main (measurable and informative) fingerprints of these features on the total scattering pattern in real and reciprocal spaces, highlighting how, and how much, they become evident when comparing different cases. The results shown herein have general validity and, as such, can be further extended to other classes of nanomaterials.
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50
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Ghosh AC, Legrand A, Rajapaksha R, Craig GA, Sassoye C, Balázs G, Farrusseng D, Furukawa S, Canivet J, Wisser FM. Rhodium-Based Metal-Organic Polyhedra Assemblies for Selective CO 2 Photoreduction. J Am Chem Soc 2022; 144:3626-3636. [PMID: 35179874 DOI: 10.1021/jacs.1c12631] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Heterogenization of molecular catalysts via their immobilization within extended structures often results in a lowering of their catalytic properties due to a change in their coordination sphere. Metal-organic polyhedra (MOP) are an emerging class of well-defined hybrid compounds with a high number of accessible metal sites organized around an inner cavity, making them appealing candidates for catalytic applications. Here, we demonstrate a design strategy that enhances the catalytic properties of dirhodium paddlewheels heterogenized within MOP (Rh-MOP) and their three-dimensional assembled supramolecular structures, which proved to be very efficient catalysts for the selective photochemical reduction of carbon dioxide to formic acid. Surprisingly, the catalytic activity per Rh atom is higher in the supramolecular structures than in its molecular sub-unit Rh-MOP or in the Rh-metal-organic framework (Rh-MOF) and yields turnover frequencies of up to 60 h-1 and production rates of approx. 76 mmole formic acid per gram of the catalyst per hour, unprecedented in heterogeneous photocatalysis. The enhanced catalytic activity is investigated by X-ray photoelectron spectroscopy and electrochemical characterization, showing that self-assembly into supramolecular polymers increases the electron density on the active site, making the overall reaction thermodynamically more favorable. The catalyst can be recycled without loss of activity and with no change of its molecular structure as shown by pair distribution function analysis. These results demonstrate the high potential of MOP as catalysts for the photoreduction of CO2 and open a new perspective for the electronic design of discrete molecular architectures with accessible metal sites for the production of solar fuels.
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Affiliation(s)
- Ashta C Ghosh
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON-UMR 5256, 2 Avenue Albert Einstein, 69626 Villeurbanne Cedex, France
| | - Alexandre Legrand
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Yoshida, Sakyo-ku, 606-8501 Kyoto, Japan
| | - Rémy Rajapaksha
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON-UMR 5256, 2 Avenue Albert Einstein, 69626 Villeurbanne Cedex, France
| | - Gavin A Craig
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Yoshida, Sakyo-ku, 606-8501 Kyoto, Japan.,Department of Pure and Applied Chemistry, University of Strathclyde, G11XL Glasgow, Scotland
| | - Capucine Sassoye
- Sorbonne Université, Chimie de la Matière Condensée de Paris-UMR 7574, 4 Place Jussieu, 75005 Paris, France
| | - Gábor Balázs
- Institute of Inorganic Chemistry, University of Regensburg, 93040 Regensburg, Germany
| | - David Farrusseng
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON-UMR 5256, 2 Avenue Albert Einstein, 69626 Villeurbanne Cedex, France
| | - Shuhei Furukawa
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Yoshida, Sakyo-ku, 606-8501 Kyoto, Japan
| | - Jérôme Canivet
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON-UMR 5256, 2 Avenue Albert Einstein, 69626 Villeurbanne Cedex, France
| | - Florian M Wisser
- Institute of Inorganic Chemistry, University of Regensburg, 93040 Regensburg, Germany
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