1
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Ma Q, Gao R, Liu Y, Dou H, Zheng Y, Or T, Yang L, Li Q, Cu Q, Feng R, Zhang Z, Nie Y, Ren B, Luo D, Wang X, Yu A, Chen Z. Regulation of Outer Solvation Shell Toward Superior Low-Temperature Aqueous Zinc-Ion Batteries. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2207344. [PMID: 36177699 DOI: 10.1002/adma.202207344] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 09/19/2022] [Indexed: 06/16/2023]
Abstract
Aqueous Zn-ion batteries are well regarded among a next-generation energy-storage technology due to their low cost and high safety. However, the unstable stripping/plating process leading to severe dendrite growth under high current density and low temperature impede their practical application. Herein, it is demonstrated that the addition of 2-propanol can regulate the outer solvation shell structure of Zn2+ by replacing water molecules to establish a "eutectic solvation shell", which provides strong affinity with the Zn (101) crystalline plane and fast desolvation kinetics during the plating process, rendering homogeneous Zn deposition without dendrite formation. As a result, the Zn anode exhibits promising cycle stability over 500 h under an elevated current density of 15 mA cm-2 and high depth of discharge of 51.2%. Furthermore, remarkable electrochemical performance is achieved in a 150 mAh Zn|V2 O5 pouch cell over 1000 cycles at low temperature of -20 °C. This work not only offers a new strategy to achieve excellent performance of aqueous Zn-ion batteries under harsh conditions, but also reveals electrolyte structure designs that can be applied in related energy storage and conversion fields.
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Affiliation(s)
- Qianyi Ma
- Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, ON, N2L 3G1, Canada
| | - Rui Gao
- Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, ON, N2L 3G1, Canada
| | - Yizhou Liu
- South China Academy of Advanced Optoelectronics, School of Information and Optoelectronic Science and Engineering & International Academy of Optoelectronics at Zhaoqing, South China Normal University, Guangzhou, 510006, China
| | - Haozhen Dou
- Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, ON, N2L 3G1, Canada
| | - Yun Zheng
- Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, ON, N2L 3G1, Canada
| | - Tyler Or
- Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, ON, N2L 3G1, Canada
| | - Leixin Yang
- South China Academy of Advanced Optoelectronics, School of Information and Optoelectronic Science and Engineering & International Academy of Optoelectronics at Zhaoqing, South China Normal University, Guangzhou, 510006, China
| | - Qingying Li
- South China Academy of Advanced Optoelectronics, School of Information and Optoelectronic Science and Engineering & International Academy of Optoelectronics at Zhaoqing, South China Normal University, Guangzhou, 510006, China
| | - Qiao Cu
- South China Academy of Advanced Optoelectronics, School of Information and Optoelectronic Science and Engineering & International Academy of Optoelectronics at Zhaoqing, South China Normal University, Guangzhou, 510006, China
| | - Renfei Feng
- Canadian Light Source, Saskatoon, S7N 2V3, Canada
| | - Zhen Zhang
- Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, ON, N2L 3G1, Canada
| | - Yihang Nie
- South China Academy of Advanced Optoelectronics, School of Information and Optoelectronic Science and Engineering & International Academy of Optoelectronics at Zhaoqing, South China Normal University, Guangzhou, 510006, China
| | - Bohua Ren
- Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, ON, N2L 3G1, Canada
| | - Dan Luo
- Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, ON, N2L 3G1, Canada
- South China Academy of Advanced Optoelectronics, School of Information and Optoelectronic Science and Engineering & International Academy of Optoelectronics at Zhaoqing, South China Normal University, Guangzhou, 510006, China
| | - Xin Wang
- South China Academy of Advanced Optoelectronics, School of Information and Optoelectronic Science and Engineering & International Academy of Optoelectronics at Zhaoqing, South China Normal University, Guangzhou, 510006, China
| | - Aiping Yu
- Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, ON, N2L 3G1, Canada
| | - Zhongwei Chen
- Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, ON, N2L 3G1, Canada
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2
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Nydegger M, Pruška A, Galinski H, Zenobi R, Reiser A, Spolenak R. Additive manufacturing of Zn with submicron resolution and its conversion into Zn/ZnO core-shell structures. NANOSCALE 2022; 14:17418-17427. [PMID: 36385575 PMCID: PMC9714770 DOI: 10.1039/d2nr04549d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 11/08/2022] [Indexed: 06/16/2023]
Abstract
Electrohydrodynamic redox 3D printing (EHD-RP) is an additive manufacturing (AM) technique with submicron resolution and multi-metal capabilities, offering the possibility to switch chemistry during deposition "on-the-fly". Despite the potential for synthesizing a large range of metals by electrochemical small-scale AM techniques, to date, only Cu and Ag have been reproducibly deposited by EHD-RP. Here, we extend the materials palette available to EHD-RP by using aqueous solvents instead of organic solvents, as used previously. We demonstrate deposition of Cu and Zn from sacrificial anodes immersed in acidic aqueous solvents. Mass spectrometry indicates that the choice of the solvent is important to the deposition of pure Zn. Additionally, we show that the deposited Zn structures, 250 nm in width, can be partially converted into semiconducting ZnO structures by oxidation at 325 °C in air.
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Affiliation(s)
- Mirco Nydegger
- Laboratory for Nanometallurgy, Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 1-5/10, Zürich 8093, Switzerland.
| | - Adam Pruška
- Laboratory of Organic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 3, CH-8093, Zurich, Switzerland
| | - Henning Galinski
- Laboratory for Nanometallurgy, Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 1-5/10, Zürich 8093, Switzerland.
| | - Renato Zenobi
- Laboratory of Organic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 3, CH-8093, Zurich, Switzerland
| | - Alain Reiser
- Laboratory for Nanometallurgy, Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 1-5/10, Zürich 8093, Switzerland.
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Ralph Spolenak
- Laboratory for Nanometallurgy, Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 1-5/10, Zürich 8093, Switzerland.
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3
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Ito D, Nakao Y, Ishizaki M, Kurihara M, Ando H. Effect of Static Jahn-Teller Distortion on the Li + Transport in a Copper Hexacyanoferrate Framework. J Phys Chem A 2022; 126:6814-6825. [PMID: 36135963 DOI: 10.1021/acs.jpca.2c02398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Prussian blue (PB) and its analogues (PBAs) are potential cathode-active materials for rechargeable lithium-ion batteries. Although a body of research has assessed the performances of various PB/PBA cathodes with an eye to practical use, the underlying Li+-transport mechanism is still unclear. Focusing on copper hexacyanoferrate (CuHCF), a PBA that exhibits static Jahn-Teller (JT) distortion, we theoretically investigate how the framework's distortion affects the pathways and energetics of the Li+ transport. Density functional theory calculations of a local structure model of CuHCF reveal that the static JT distortion makes the favorable Li+-transport pathways quasi-two-dimensional, contrary to an intuitive picture of isotropic Li+ diffusion within the regular jungle-gym framework. The pathways are mutually interconnected, thereby creating an almost barrierless transport network. To better understand the distortion-induced transport anisotropy, we visually analyze the framework's electronic structure and noncovalent Li+-framework interactions. This study helps deepen the fundamental understanding of intrinsic Li+-transport properties of a distorted porous framework.
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Affiliation(s)
- Dan Ito
- Faculty of Science, Yamagata University, 1-4-12 Kojirakawa-machi, Yamagata 990-8560, Japan
| | - Yoshihide Nakao
- Faculty of Life Science, Kyushu Sangyo University, 2-3-1 Matsukadai, Higashi-ku, Fukuoka 813-8503, Japan
| | - Manabu Ishizaki
- Faculty of Science, Yamagata University, 1-4-12 Kojirakawa-machi, Yamagata 990-8560, Japan
| | - Masato Kurihara
- Faculty of Science, Yamagata University, 1-4-12 Kojirakawa-machi, Yamagata 990-8560, Japan
| | - Hideo Ando
- Faculty of Science, Yamagata University, 1-4-12 Kojirakawa-machi, Yamagata 990-8560, Japan
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4
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Paisuwan W, Ajavakom V, Sukwattanasinitt M, Tobisu M, Ajavakom A. Ratiometric and colorimetric detection of Cu2+ via the oxidation of benzodihydroquinoline derivatives and related synthetic methodology. SENSING AND BIO-SENSING RESEARCH 2022. [DOI: 10.1016/j.sbsr.2021.100470] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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5
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Asavasuthiphan V, Nuisin R, Kraiya C, Sukwattanasinitt M, Rashatasakhon P. Ratiometric Fluorescent Sensor for Copper(II) and Phosphate Ions from Aminopyrene Derivatives. Photochem Photobiol 2021; 98:856-863. [PMID: 34861046 DOI: 10.1111/php.13569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 11/30/2021] [Indexed: 11/27/2022]
Abstract
Three derivatives of 1-aminopyrene are functionalized with 2-picolyl and 2-picolinyl groups and are tested as fluorescent sensors for metal ions. The target compounds are successfully synthesized in yields of 50-90% and characterized by 1 H-NMR, 13 C-NMR, and HRMS. The compound with an amino picolyl group (P1) exhibits an excellent selectivity toward Cu(II) ion as the fluorescent signal shifts from 433 to 630 nm. From a fluorescence titration experiment, the limit of detection for Cu(II) ion is estimated as 0.19 µm. The fluorescence spectral shift by Cu(II) ion is reliant on the use of acetonitrile as a co-solvent, and the results from cyclic voltammetry and UV-Vis spectroscopy suggest that the sensing mechanism involves a coordination complex between the P1, acetonitrile and Cu(II) ion. Furthermore, this P1-Cu complex can also be used as a selective fluorescent sensor for PO4 3- ion with a detection limit of 0.44 µm.
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Affiliation(s)
- Voravin Asavasuthiphan
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Roongkan Nuisin
- Department of Environmental Science, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Charoenkwan Kraiya
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand.,Electrochemistry and Optical Spectroscopy Center of Excellence, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Mongkol Sukwattanasinitt
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand.,Nanotec-CU Center of Excellence on Food and Agriculture, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Paitoon Rashatasakhon
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand.,Nanotec-CU Center of Excellence on Food and Agriculture, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
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6
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Folgueras MC, Louisia S, Jin J, Gao M, Du A, Fakra SC, Zhang R, Seeler F, Schierle-Arndt K, Yang P. Ligand-Free Processable Perovskite Semiconductor Ink. NANO LETTERS 2021; 21:8856-8862. [PMID: 34612654 DOI: 10.1021/acs.nanolett.1c03308] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Traditional covalent semiconductors require complex processing methods for device fabrication due to their high cohesive energies. Here, we develop a stable, ligand-free perovskite semiconductor ink that can be used to make patterned semiconductor-based optoelectronics in one step. The perovskite ink is formed via the dissolution of crystals of vacancy-ordered double perovskite Cs2TeX6 (X = Cl-, Br-, I-) in polar aprotic solvents, leading to the stabilization of isolated [TeX6]2- octahedral anions and free Cs+ cations without the presence of ligands. The stabilization of the fundamental perovskite ionic octahedral building blocks in solution creates multifunctional inks with the ability to reversibly transform between the liquid ink and the solid-state perovskite crystalline system in air within minutes. These easily processable inks can be patterned onto various materials via dropcasting, spraying or painting, and stamping, highlighting the crucial role of solvated octahedral complexes toward the rapid formation of phase-pure perovskite structures in ambient conditions.
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Affiliation(s)
- Maria C Folgueras
- Department of Materials Science and Engineering, University of California, Berkeley, Berkeley, California 94720, United States
- California Research Alliance (CARA), BASF Corporation, Berkeley, California 94720, United States
| | - Sheena Louisia
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Jianbo Jin
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
- California Research Alliance (CARA), BASF Corporation, Berkeley, California 94720, United States
| | - Mengyu Gao
- Department of Materials Science and Engineering, University of California, Berkeley, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Alexandra Du
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
| | - Sirine C Fakra
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Rui Zhang
- California Research Alliance (CARA), BASF Corporation, Berkeley, California 94720, United States
| | | | - Kerstin Schierle-Arndt
- California Research Alliance (CARA), BASF Corporation, Berkeley, California 94720, United States
- BASF SE, Ludwigshafen am Rhein 67056, Germany
| | - Peidong Yang
- Department of Materials Science and Engineering, University of California, Berkeley, Berkeley, California 94720, United States
- Department of Chemistry, University of California, Berkeley, Berkeley, California 94720, United States
- California Research Alliance (CARA), BASF Corporation, Berkeley, California 94720, United States
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Kavli Energy NanoScience Institute, Berkeley, California 94720, United States
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7
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Frank P, Benfatto M. Symmetry Breaking in Solution-Phase [Cu(tsc) 2(H 2O) 2] 2+: Emergent Asymmetry in Cu-S Distances and in Covalence. J Phys Chem B 2021; 125:10779-10795. [PMID: 34546762 DOI: 10.1021/acs.jpcb.1c05022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The structure of aqueous Cu(II)-bis-thiosemicarbazide, [Cu(tsc)2]2+, is reported following EXAFS and MXAN analyses of the copper K-edge X-ray absorption (XAS) spectrum. The rising K-edge feature at 8987.1 eV is higher energy than those of crystalline models, implying unique electronic and structural solution states. EXAFS analysis (k = 2-13 Å-1; 2 × Cu-N = 2.02 ± 0.01 Å; 2 × Cu-S = 2.27 ± 0.01 Å; Cu-Oax = 2.41 ± 0.04 Å) could not resolve 5- versus 6-coordinate models. However, MXAN fits converged to an asymmetric broken symmetry 6-coordinate model with cis-disposed TSC ligands (Cu-Oax = 2.07 and 2.54 Å; Cu-N = 1.94 Å, 1.98 Å; Cu-S = 2.20 Å, 2.41 Å). Transition dipole integral evaluation of the sulfur K-edge XAS 1s → 3p valence transition feature at 2470.7 eV yielded a Cu-S covalence of 0.66 e-, indicating Cu1.34+. The high Cu-S covalence and short Cu-S bond in aqueous [Cu(tsc)2(H2O)2]2+ again contradict the need for a protein rack to explain the unique structure of the blue copper active site. MXAN models of dissolved Cu(II) complex ions have invariably featured broken centrosymmetry. The potential energy ground state for dissolved Cu(II) evidently includes the extended solvation field, providing a target for improved physical theory. A revised solvation model for aqueous Cu(II), |[Cu(H2O)5]·14H2O|2+, is presented.
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Affiliation(s)
- Patrick Frank
- Stanford Synchrotron Radiation Lightsource, SLAC, Stanford University, Menlo Park, California 94025, United States.,Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Maurizio Benfatto
- Laboratori Nazionali di Frascati-INFN, P.O. Box 13, 00044 Frascati, Italy
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8
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Kircheva N, Dobrev S, Yakimova B, Stoineva I, Angelova S. Molecular insights into the interaction of angiotensin I-converting enzyme (ACE) inhibitors and HEXXH motif. Biophys Chem 2021; 276:106626. [PMID: 34082361 DOI: 10.1016/j.bpc.2021.106626] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 05/24/2021] [Accepted: 05/24/2021] [Indexed: 10/21/2022]
Abstract
Nutraceuticals and functional foods garner a lot of attention as potential alternative therapies for treatment of (pre)hypertension. Food-derived proteins release large variety of bioactive peptides which are similar in structure to peptide sequences acting in the organism and therefore can modulate their physiological functions. Val-Pro-Pro (VPP) is a milk-derived tripeptide with assumed mild inhibitory activity against angiotensin-converting enzyme (ACE). Computational (DFT) methods are applied on simplified models of Zn2+-HEXXH binding motif without/with bound inhibitors in order to assess the ability of two pharmaceutical drugs (Captopril and Lisinopril) and Val-Pro-Pro to coordinate with Zn2+-HEXXH binding motif of ACE. Both drugs have significant affinity towards the active site, while the Val-Pro-Pro tripeptide has weaker affinity. The obtained results shed light on the thermodynamic aspects of the inhibitors coordination to the Zn2+-HEXXH binding motif of ACE.
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Affiliation(s)
- Nikoleta Kircheva
- Institute of Optical Materials and Technologies "Acad. J. Malinowski", Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
| | - Stefan Dobrev
- Institute of Optical Materials and Technologies "Acad. J. Malinowski", Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
| | - Boryana Yakimova
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
| | - Ivanka Stoineva
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
| | - Silvia Angelova
- Institute of Optical Materials and Technologies "Acad. J. Malinowski", Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria.
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9
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Ivanova B, Spiteller M. Electrospray ionization stochastic dynamic mass spectrometric 3D structural analysis of Zn II–ion containing complexes in solution. INORG NANO-MET CHEM 2021. [DOI: 10.1080/24701556.2021.1956963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Bojidarka Ivanova
- Lehrstuhl für Analytische Chemie, Institut für Umweltforschung, Fakultät für Chemie und Chemische Biologie, Universität Dortmund, Dortmund, Nordrhein-Westfalen, Deutschland
| | - Michael Spiteller
- Lehrstuhl für Analytische Chemie, Institut für Umweltforschung, Fakultät für Chemie und Chemische Biologie, Universität Dortmund, Dortmund, Nordrhein-Westfalen, Deutschland
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10
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Migliorati V, Fazio G, Pollastri S, Gentili A, Tomai P, Tavani F, D'Angelo P. Solubilization properties and structural characterization of dissociated HgO and HgCl2 in deep eutectic solvents. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115505] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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11
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Madkhali MMM, Rankine CD, Penfold TJ. Enhancing the analysis of disorder in X-ray absorption spectra: application of deep neural networks to T-jump-X-ray probe experiments. Phys Chem Chem Phys 2021; 23:9259-9269. [PMID: 33885072 DOI: 10.1039/d0cp06244h] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Many chemical and biological reactions, including ligand exchange processes, require thermal energy for the reactants to overcome a transition barrier and reach the product state. Temperature-jump (T-jump) spectroscopy uses a near-infrared (NIR) pulse to rapidly heat a sample, offering an approach for triggering these processes and directly accessing thermally-activated pathways. However, thermal activation inherently increases the disorder of the system under study and, as a consequence, can make quantitative interpretations of structural changes challenging. In this Article, we optimise a deep neural network (DNN) for the instantaneous prediction of Co K-edge X-ray absorption near-edge structure (XANES) spectra. We apply our DNN to analyse T-jump pump/X-ray probe data pertaining to the ligand exchange processes and solvation dynamics of Co2+ in chlorinated aqueous solution. Our analysis is greatly facilitated by machine learning, as our DNN is able to predict quickly and cost-effectively the XANES spectra of thousands of geometric configurations sampled from ab initio molecular dynamics (MD) using nothing more than the local geometric environment around the X-ray absorption site. We identify directly the structural changes following the T-jump, which are dominated by sample heating and a commensurate increase in the Debye-Waller factor.
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Affiliation(s)
- Marwah M M Madkhali
- Chemistry - School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK.
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12
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Song X, He H, Aboonasr Shiraz MH, Zhu H, Khosrozadeh A, Liu J. Enhanced reversibility and electrochemical window of Zn-ion batteries with an acetonitrile/water-in-salt electrolyte. Chem Commun (Camb) 2021; 57:1246-1249. [PMID: 33427248 DOI: 10.1039/d0cc06076c] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An acetonitrile/water-in-salt (AWIS) hybrid electrolyte was developed for Zn-ion batteries. Compared to conventional aqueous electrolytes, the AWIS hybrid electrolyte prolonged the lifespan of Zn|Zn cells from 150 to 2500 h and increased the upper cut-off voltage from 1.8 to 2.2 V for Zn-MnO2 batteries. This new AWIS hybrid electrolyte is expected to enhance the energy and power density of Zn-based batteries for large-scale grid storage.
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Affiliation(s)
- Xueyang Song
- School of Engineering, Faculty of Applied Science, The University of British Columbia, Kelowna, BC V1V 1V7, Canada.
| | - Huibing He
- School of Engineering, Faculty of Applied Science, The University of British Columbia, Kelowna, BC V1V 1V7, Canada.
| | | | - Hongzheng Zhu
- School of Engineering, Faculty of Applied Science, The University of British Columbia, Kelowna, BC V1V 1V7, Canada.
| | - Ali Khosrozadeh
- School of Engineering, Faculty of Applied Science, The University of British Columbia, Kelowna, BC V1V 1V7, Canada.
| | - Jian Liu
- School of Engineering, Faculty of Applied Science, The University of British Columbia, Kelowna, BC V1V 1V7, Canada.
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13
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Kircheva N, Dobrev S, Nikolova V, Angelova S, Dudev T. Zinc and Its Critical Role in Retinitis pigmentosa: Insights from DFT/SMD Calculations. Inorg Chem 2020; 59:17347-17355. [DOI: 10.1021/acs.inorgchem.0c02664] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Nikoleta Kircheva
- Institute of Optical Materials and Technologies “Acad. J. Malinowski”, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
| | - Stefan Dobrev
- Institute of Optical Materials and Technologies “Acad. J. Malinowski”, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
| | - Valya Nikolova
- Faculty of Chemistry and Pharmacy, Sofia University “St. Kl. Ohridski”, 1164 Sofia, Bulgaria
| | - Silvia Angelova
- Institute of Optical Materials and Technologies “Acad. J. Malinowski”, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
| | - Todor Dudev
- Faculty of Chemistry and Pharmacy, Sofia University “St. Kl. Ohridski”, 1164 Sofia, Bulgaria
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14
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Persson I, Lundberg D, Bajnóczi ÉG, Klementiev K, Just J, Sigfridsson Clauss KGV. EXAFS Study on the Coordination Chemistry of the Solvated Copper(II) Ion in a Series of Oxygen Donor Solvents. Inorg Chem 2020; 59:9538-9550. [PMID: 32614569 PMCID: PMC7467664 DOI: 10.1021/acs.inorgchem.0c00403] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
The
structures of the solvated copper(II) ion in water and nine organic
oxygen donor solvents with similar electron-pair donor ability, but
with different space-demanding properties at coordination, have been
studied by EXAFS. N,N′-Dimethylpropyleneurea
and N,N,N′,N′-tetramethylurea are sufficiently
space demanding at coordination to make the axial positions not accessible,
resulting in square-planar copper(II) solvate complexes with an intense
green color. The mean Cu–O bond distances in these two solvate
complexes are 1.939(3) and 1.935(3) Å, respectively. The best
fits of the remaining solvates, which are light blue in different
hues, are obtained with a Jahn–Teller distorted-octahedral
model consisting of four strongly bound solvent molecules in the equatorial
positions at 1.96(2) Å and two in the axial positions but with
different Cu–Oax bond distances: ca. 2.15 and 2.32
Å. This is in agreement with observations in solid-state structures
of compounds containing hexaaquacopper(II) complexes crystallizing
in noncentrosymmetric space groups and all reported crystal structures
containing a [Cu(H2O)5(O-ligand)] complex with
Jahn–Teller distortion. Such a structure is in agreement with
previous EPR and EXAFS studies proving the hydrated copper(II) ion
to be a noncentrosymmetric complex in aqueous solution. The refinements
of the EXAFS data of the solids [Cu(H2O)6](ClO4)2, [Cu(H2O)6](BrO3)2, [Cu(H2O)6]SiF6, Cu(NO3)2·2.5H2O, and CuSO4·5H2O gave Cu–O bond distances significantly
different from those reported in the crystallographic studies but
similar to the configuration and bond distances in the hydrated copper(II)
ion in aqueous solution. This may depend on whether the orientation
of the axial positions is random in one or three dimensions, giving
a mean structure of the solid with symmetry higher than that of the
individual complexes. This study presents the very first experimental
data from the new X-ray absorption spectroscopy beamline Balder at
the MAX IV synchrotron radiation facility in Lund, Sweden, as well
as the utilized properties of the beamline. The coordination chemistry of the solvated copper(II) ion
has been studied in 10 solvents, including water. The copper(II) ion
has a noncentrosymmetric Jahn−Teller distorted-octahedral geometry
with the axial Cu−O bond distances differing by ca. 0.2 Å.
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Affiliation(s)
- Ingmar Persson
- Department of Molecular Sciences, Swedish University of Agricultural Sciences, P.O. Box 7015, SE-750 07 Uppsala, Sweden
| | - Daniel Lundberg
- Department of Molecular Sciences, Swedish University of Agricultural Sciences, P.O. Box 7015, SE-750 07 Uppsala, Sweden
| | - Éva G Bajnóczi
- Department of Molecular Sciences, Swedish University of Agricultural Sciences, P.O. Box 7015, SE-750 07 Uppsala, Sweden
| | | | - Justus Just
- MAX IV Laboratory, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
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15
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Tavani F, Martini A, Capocasa G, Di Stefano S, Lanzalunga O, D'Angelo P. Direct Mechanistic Evidence for a Nonheme Complex Reaction through a Multivariate XAS Analysis. Inorg Chem 2020; 59:9979-9989. [PMID: 32598841 PMCID: PMC8008396 DOI: 10.1021/acs.inorgchem.0c01132] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
![]()
In
this work, we propose a method to directly determine the mechanism
of the reaction between the nonheme complex FeII(tris(2-pyridylmethyl)amine)
([FeII(TPA)(CH3CN)2]2+) and peracetic acid (AcOOH) in CH3CN, working at room
temperature. A multivariate analysis is applied to the time-resolved
coupled energy-dispersive X-ray absorption spectroscopy (EDXAS) reaction
data, from which a set of spectral and concentration profiles for
the reaction key species is derived. These “pure” extracted
EDXAS spectra are then quantitatively characterized by full multiple
scattering (MS) calculations. As a result, structural information
for the elusive reaction intermediates [FeIII(TPA)(κ2-OOAc)]2+ and [FeIV(TPA)(O)(X)]+/2+ is obtained, and it is suggested that X = AcO– in opposition to X = CH3CN. The employed strategy is
promising both for the spectroscopic characterization of reaction
intermediates that are labile or silent to the conventional spectroscopic
techniques, as well as for the mechanistic understanding of complex
redox reactions involving organic substrates. A combined multivariate and theoretical XAS analysis was
proven to be a powerful method to obtain direct evidence for the mechanism
of the reaction between the nonheme complex FeII(tris(2-pyridymethyl)amine)
([FeII(TPA)(CH3CN)2]2+) and peroxyacetic acid. This approach allowed to determine the time
evolution of the concentration profiles for all reaction intermediates
and to quantitatively characterize their structures, suggesting the
sixth coordinating ligand of the nonheme oxo complex [FeIV(TPA)(O)(X)]+/2+ is X = AcO− in
opposition to X = CH3CN.
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Affiliation(s)
- Francesco Tavani
- Dipartimento di Chimica, Università di Roma "La Sapienza", P.le A. Moro 5, 00185 Roma, Italy
| | - Andrea Martini
- Dipartimento di Chimica, Università degli Studi di Torino, Via P. Giuria 7, 10125 Torino, Italy.,The Smart Materials Research Institute, Southern Federal University, Sladkova 178/24, 344090 Rostov-on-Don, Russia
| | - Giorgio Capocasa
- Dipartimento di Chimica, Università di Roma "La Sapienza", P.le A. Moro 5, 00185 Roma, Italy
| | - Stefano Di Stefano
- Dipartimento di Chimica, Università di Roma "La Sapienza", P.le A. Moro 5, 00185 Roma, Italy
| | - Osvaldo Lanzalunga
- Dipartimento di Chimica, Università di Roma "La Sapienza", P.le A. Moro 5, 00185 Roma, Italy
| | - Paola D'Angelo
- Dipartimento di Chimica, Università di Roma "La Sapienza", P.le A. Moro 5, 00185 Roma, Italy
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16
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Reyna-Luna J, Flores R, Gómez-Balderas R, Franco-Pérez M. Chemical Equilibrium of Zinc Acetate Complexes in Ethanol Solution. A Theoretical Description through Thermodynamic Cycles. J Phys Chem B 2020; 124:3355-3370. [PMID: 32216349 DOI: 10.1021/acs.jpcb.9b10687] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The Gibbs free energy of complexation between the Zn(II) species and acetate ligands, forming the [Zn(OAc)n]2-n complexes with n = 1, 2 in an ethanol solution, was assessed by two different theoretical protocols based on thermodynamic cycles. In both approaches, the solution phase Gibbs free energy of each reaction is computed by summing up contributions from gas phase thermochemistry calculations to solvation Gibbs free energies obtained in a hybrid fashion, i.e., each (neutral or electrically charged) solute was first solvated by explicit solvent molecules in order to capture relevant (micro) solute-solvent and/or solvent-solvent interactions and then, a continuum model calculation is performed in order to get the corresponding bulky solute-solvent contributions. For our first thermodynamic protocol, here denominated as variant 1, a set of x independent solvent molecules are used to screen each of the involved solutes, while the variant 2 strategy uses the fact that a set of solvent molecules may exist as aggregates (or molecular clusters) in the solvent macroscopic media, before the solvation process of solutes. Our selected quantum theoretical protocol was the M05-2X/6-31+G(d)/SMD level. We made a systematic exploration about the influence of several sources of errors, such as the solvent conformation, the number of solvent molecules used to screen each of the involved solutes, the coordination geometry of the metallic center before and after the complexation process, and the pertinence of using molecular geometries optimized in gas phase and in ethanol solution, for the computation of the Gibbs free energy variation regarding the two chemical reactions under study. We set an accuracy threshold equal or less than 4.0 kcal·mol-1, with respect to the corresponding experimental records. The robustness of our thermodynamic strategies was then tested by computing the gas phase free energy contributions to the (solution phase) reaction free energies here assessed, using different density functional approximations, namely the M05-2X, BH&HLYP, PBE0, ωb97X-D and M06-2X functionals in conjunction with the larger 6-311+G(d,p) basis set.
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Affiliation(s)
- Julieta Reyna-Luna
- Departamento de Física y Química Teórica, Facultad de Química, Universidad Nacional Autónoma de México, Cd. Universitaria, 04510 Ciudad de México, México.,Laboratorio de Fisicoquímica Analítica, Unidad de Investigación Multidisciplinaria, Facultad de Estudios Superiores-Cuautitlán, Universidad Nacional Autónoma de México, Cuautitlán Izcalli, 54700, Estado de México, México
| | - Raúl Flores
- Laboratorio de Fisicoquímica Analítica, Unidad de Investigación Multidisciplinaria, Facultad de Estudios Superiores-Cuautitlán, Universidad Nacional Autónoma de México, Cuautitlán Izcalli, 54700, Estado de México, México
| | - Rodolfo Gómez-Balderas
- Laboratorio de Fisicoquímica Analítica, Unidad de Investigación Multidisciplinaria, Facultad de Estudios Superiores-Cuautitlán, Universidad Nacional Autónoma de México, Cuautitlán Izcalli, 54700, Estado de México, México
| | - Marco Franco-Pérez
- Departamento de Física y Química Teórica, Facultad de Química, Universidad Nacional Autónoma de México, Cd. Universitaria, 04510 Ciudad de México, México
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17
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Kannankutty K, Chen CC, Nguyen VS, Lin YC, Chou HH, Yeh CY, Wei TC. tert-Butylpyridine Coordination with [Cu(dmp) 2] 2+/+ Redox Couple and Its Connection to the Stability of the Dye-Sensitized Solar Cell. ACS APPLIED MATERIALS & INTERFACES 2020; 12:5812-5819. [PMID: 31942803 DOI: 10.1021/acsami.9b19119] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Cu(I)/(II) complex redox couples in dye-sensitized solar cell (DSSC) are of particular interest because of their low reorganization energy between Cu(I) and Cu(II), which minimizes the potential loss during sensitizer regeneration, thus allowing the open-circuit voltage of the device to go over 1.0 V. However, Cu(I)/(II)-based redox couples are reported to coordinate with 4-tert-butylpyridine (TBP), which is a standard additive in the electrolyte, and this is believed to account for the poor durability of a Cu(I)/(II)-based DSSCs. Despite TBP coordination on Cu(I)/(II) complexes are confirmed in the literature, its detailed mechanism is yet to be directly proven. In addition, how TBP coordination with Cu(I)/(II) complexes affects the stability of the device is never reported. Here, we choose bis(2,9-dimethyl-1,10-phenanthroline) copper(I)/(II) ([Cu(dmp)22+/+]) as the modeling redox couple to investigate its interaction with TBP. It is found that [Cu(dmp)2+] is resistive to TBP coordination but could form three new TBP-coordinated compounds. Moreover, it is also confirmed their electrochemical activity on Pt catalyst and mass transfer capability are both demoted significantly. As a result, serious fill factor loss is observed on the stability trail while short-circuit current density and open-circuit voltage are relatively unaffected. This unique degradation pattern may resemble a feature of Cu(I)/(II)-based redox couple after TBP poisoning.
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Affiliation(s)
- Kala Kannankutty
- Department of Chemical Engineering , National Tsing Hua University , Hsinchu 300 , Taiwan
| | - Ching-Chin Chen
- Department of Chemical Engineering , National Tsing Hua University , Hsinchu 300 , Taiwan
| | - Vinh Son Nguyen
- Department of Chemical Engineering , National Tsing Hua University , Hsinchu 300 , Taiwan
| | - Yu-Cheng Lin
- Department of Chemistry and Research Center for Sustainable Energy and Nanotechnology and Innovation and Development Center of Sustainable Agriculture , National Chung Hsing University , Taichung 402 , Taiwan
| | - Hsien-Hsin Chou
- Department of Chemistry and Research Center for Sustainable Energy and Nanotechnology and Innovation and Development Center of Sustainable Agriculture , National Chung Hsing University , Taichung 402 , Taiwan
| | - Chen-Yu Yeh
- Department of Chemistry and Research Center for Sustainable Energy and Nanotechnology and Innovation and Development Center of Sustainable Agriculture , National Chung Hsing University , Taichung 402 , Taiwan
| | - Tzu-Chien Wei
- Department of Chemical Engineering , National Tsing Hua University , Hsinchu 300 , Taiwan
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18
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Migliorati V, Lapi A, D'Angelo P. Unraveling the solvation geometries of the lanthanum(iii) bistriflimide salt in ionic liquid/acetonitrile mixtures. Phys Chem Chem Phys 2020; 22:20434-20443. [PMID: 32915187 DOI: 10.1039/d0cp03977b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
La(Tf2N)3 in C8(mim)2(Tf2N)2/acetonitrile mixtures forms 10-fold coordination complexes composed of both acetonitrile molecules and Tf2N− anions.
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Affiliation(s)
| | - Andrea Lapi
- Dipartimento di Chimica
- Università di Roma “La Sapienza”
- 00185 Roma
- Italy
| | - Paola D'Angelo
- Dipartimento di Chimica
- Università di Roma “La Sapienza”
- 00185 Roma
- Italy
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19
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Gao J, Wei C, Dong M, Wang G, Li Z, Qin Z, Wang J, Fan W. Evolution of Zn Species on Zn/HZSM‐5 Catalyst under H2Pretreated and its Effect on Ethylene Aromatization. ChemCatChem 2019. [DOI: 10.1002/cctc.201900596] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jie Gao
- State Key Laboratory of Coal Conversion Institute of Coal ChemistryChinese Academy of Sciences Taiyuan 030001 P. R. China
- University of the Chinese Academy of Sciences Beijing 100049 P.R. China
| | - Chunlei Wei
- State Key Laboratory of Coal Conversion Institute of Coal ChemistryChinese Academy of Sciences Taiyuan 030001 P. R. China
| | - Mei Dong
- State Key Laboratory of Coal Conversion Institute of Coal ChemistryChinese Academy of Sciences Taiyuan 030001 P. R. China
| | - Guofu Wang
- State Key Laboratory of Coal Conversion Institute of Coal ChemistryChinese Academy of Sciences Taiyuan 030001 P. R. China
| | - Zhikai Li
- State Key Laboratory of Coal Conversion Institute of Coal ChemistryChinese Academy of Sciences Taiyuan 030001 P. R. China
| | - Zhangfeng Qin
- State Key Laboratory of Coal Conversion Institute of Coal ChemistryChinese Academy of Sciences Taiyuan 030001 P. R. China
| | - Jianguo Wang
- State Key Laboratory of Coal Conversion Institute of Coal ChemistryChinese Academy of Sciences Taiyuan 030001 P. R. China
- University of the Chinese Academy of Sciences Beijing 100049 P.R. China
| | - Weibin Fan
- State Key Laboratory of Coal Conversion Institute of Coal ChemistryChinese Academy of Sciences Taiyuan 030001 P. R. China
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20
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Insight into the roles of two typical ion clusters and their second hydration shells: Implication for the nucleation mechanism in MgSO4 aqueous solution. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.01.042] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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21
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Chernyshev AV, Guda AA, Cannizzo A, Solov’eva EV, Voloshin NA, Rusalev Y, Shapovalov VV, Smolentsev G, Soldatov AV, Metelitsa AV. Operando XAS and UV–Vis Characterization of the Photodynamic Spiropyran–Zinc Complexes. J Phys Chem B 2019; 123:1324-1331. [DOI: 10.1021/acs.jpcb.8b11010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- A. V. Chernyshev
- Institute of Physical and Organic Chemistry, Southern Federal University, Stachka Avenue, 194/2, 344090 Rostov-on-Don, Russia
| | - A. A. Guda
- The Smart Materials Research Institute, Southern Federal University, Sladkova Street 178/24, 344090 Rostov-on-Don, Russia
| | - A. Cannizzo
- Institute of Applied Physics, University of Bern, Sidlerstrasse 5, 3012 Bern, Switzerland
| | - E. V. Solov’eva
- Institute of Physical and Organic Chemistry, Southern Federal University, Stachka Avenue, 194/2, 344090 Rostov-on-Don, Russia
| | - N. A. Voloshin
- Institute of Physical and Organic Chemistry, Southern Federal University, Stachka Avenue, 194/2, 344090 Rostov-on-Don, Russia
| | - Yu. Rusalev
- The Smart Materials Research Institute, Southern Federal University, Sladkova Street 178/24, 344090 Rostov-on-Don, Russia
| | - V. V. Shapovalov
- The Smart Materials Research Institute, Southern Federal University, Sladkova Street 178/24, 344090 Rostov-on-Don, Russia
| | | | - A. V. Soldatov
- The Smart Materials Research Institute, Southern Federal University, Sladkova Street 178/24, 344090 Rostov-on-Don, Russia
| | - A. V. Metelitsa
- Institute of Physical and Organic Chemistry, Southern Federal University, Stachka Avenue, 194/2, 344090 Rostov-on-Don, Russia
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22
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Migliorati V, Filipponi A, Sessa F, Lapi A, Serva A, D'Angelo P. Solvation structure of lanthanide(iii) bistriflimide salts in acetonitrile solution: a molecular dynamics simulation and EXAFS investigation. Phys Chem Chem Phys 2019; 21:13058-13069. [DOI: 10.1039/c9cp01417a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Lanthanide3+ ions in acetonitrile solutions of bistriflimide salts form 10-fold coordination complexes composed of both solvent molecules and counterions
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Affiliation(s)
| | - Adriano Filipponi
- Dipartimento di Scienze Fisiche e Chimiche
- Università degli Studi dell’Aquila, Via Vetoio
- 67100 L’Aquila
- Italy
| | - Francesco Sessa
- Dipartimento di Chimica
- Università di Roma “La Sapienza”
- 00185 Roma
- Italy
| | - Andrea Lapi
- Dipartimento di Chimica
- Università di Roma “La Sapienza”
- 00185 Roma
- Italy
- Istituto CNR di Metodologie Chimiche-IMC
| | - Alessandra Serva
- Dipartimento di Chimica
- Università di Roma “La Sapienza”
- 00185 Roma
- Italy
| | - Paola D'Angelo
- Dipartimento di Chimica
- Università di Roma “La Sapienza”
- 00185 Roma
- Italy
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23
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Frank P, Benfatto M, Qayyum M. [Cu(aq)] 2+ is structurally plastic and the axially elongated octahedron goes missing. J Chem Phys 2018; 148:204302. [PMID: 29865827 DOI: 10.1063/1.5024693] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
High resolution (k = 18 Å-1 or k = 17 Å-1) copper K-edge EXAFS and MXAN (Minuit X-ray Absorption Near Edge) analyses have been used to investigate the structure of dissolved [Cu(aq)]2+ in 1,3-propanediol (1,3-P) or 1,5-pentanediol (1,5-P) aqueous frozen glasses. EXAFS analysis invariably found a single axially asymmetric 6-coordinate (CN6) site, with 4×Oeq = 1.97 Å, Oax1 = 2.22 Å, and Oax2 = 2.34 Å, plus a second-shell of 4×Owater = 3.6 Å. However, MXAN analysis revealed that [Cu(aq)]2+ occupies both square pyramidal (CN5) and axially asymmetric CN6 structures. The square pyramid included 4×H2O = 1.95 Å and 1×H2O = 2.23 Å. The CN6 sites included either a capped, near perfect, square pyramid with 5×H2O = 1.94 ± 0.04 Å and H2Oax = 2.22 Å (in 1,3-P) or a split axial configuration with 4×H2O = 1.94, H2Oax1 = 2.14 Å, and H2Oax2 = 2.28 Å (in 1,5-P). The CN6 sites also included an 8-H2O second-shell near 3.7 Å, which was undetectable about the strictly pyramidal sites. Equatorial angles averaging 94° ± 5° indicated significant departures from tetragonal planarity. MXAN assessment of the solution structure of [Cu(aq)]2+ in 1,5-P prior to freezing revealed the same structures as previously found in aqueous 1M HClO4, which have become axially compressed in the frozen glasses. [Cu(aq)]2+ in liquid and frozen solutions is dominated by a 5-coordinate square pyramid, but with split axial CN6 appearing in the frozen glasses. Among these phases, the Cu-O axial distances vary across 1 Å, and the equatorial angles depart significantly from the square plane. Although all these structures remove the dx2-y2 , dz2 degeneracy, no structure can be described as a Jahn-Teller (JT) axially elongated octahedron. The JT-octahedral description for dissolved [Cu(aq)]2+ should thus be abandoned in favor of square pyramidal [Cu(H2O)5]2+. The revised ligand environments have bearing on questions of the Cu(i)/Cu(ii) self-exchange rate and on the mechanism for ligand exchange with bulk water. The plasticity of dissolved Cu(ii) complex ions falsifies the foundational assumption of the rack-induced bonding theory of blue copper proteins and obviates any need for a thermodynamically implausible protein constraint.
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Affiliation(s)
- Patrick Frank
- Department of Chemistry, Stanford University, Stanford, California 94305, USA
| | - Maurizio Benfatto
- Laboratori Nazionali di Frascati-INFN, P.O. Box 13, 00044 Frascati, Italy
| | - Munzarin Qayyum
- Department of Chemistry, Stanford University, Stanford, California 94305, USA
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24
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The electronic spectra and the structures of the individual copper(II) chloride and bromide complexes in acetonitrile according to steady-state absorption spectroscopy and DFT/TD-DFT calculations. Chem Phys 2018. [DOI: 10.1016/j.chemphys.2018.01.020] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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25
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Sessa F, Migliorati V, Serva A, Lapi A, Aquilanti G, Mancini G, D'Angelo P. On the coordination of Zn2+ ion in Tf2N− based ionic liquids: structural and dynamic properties depending on the nature of the organic cation. Phys Chem Chem Phys 2018; 20:2662-2675. [DOI: 10.1039/c7cp07497b] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The Zn2+ coordination structure changes when the Zn(Tf2N)2 salt is dissolved in ionic liquids resulting in more favorable interactions among solvent cations and anions.
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Affiliation(s)
- Francesco Sessa
- Dipartimento di Chimica
- Università di Roma “La Sapienza”
- 00185 Roma
- Italy
| | | | - Alessandra Serva
- Dipartimento di Chimica
- Università di Roma “La Sapienza”
- 00185 Roma
- Italy
| | - Andrea Lapi
- Dipartimento di Chimica
- Università di Roma “La Sapienza”
- 00185 Roma
- Italy
- Istituto CNR di Metodologie Chimiche-IMC
| | | | | | - Paola D'Angelo
- Dipartimento di Chimica
- Università di Roma “La Sapienza”
- 00185 Roma
- Italy
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26
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Bukharov MS, Shtyrlin VG, Gilyazetdinov EM, Serov NY, Madzhidov TI. Hydration of copper(II) amino acids complexes. J Comput Chem 2017; 39:821-826. [DOI: 10.1002/jcc.25154] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 12/12/2017] [Accepted: 12/13/2017] [Indexed: 11/05/2022]
Affiliation(s)
- Mikhail S. Bukharov
- Kazan Federal University, A. M. Butlerov Chemistry Institute, 18 Kremlevskaya St; Kazan 420008 Russian Federation
| | - Valery G. Shtyrlin
- Kazan Federal University, A. M. Butlerov Chemistry Institute, 18 Kremlevskaya St; Kazan 420008 Russian Federation
| | - Edward M. Gilyazetdinov
- Kazan Federal University, A. M. Butlerov Chemistry Institute, 18 Kremlevskaya St; Kazan 420008 Russian Federation
| | - Nikita Yu. Serov
- Kazan Federal University, A. M. Butlerov Chemistry Institute, 18 Kremlevskaya St; Kazan 420008 Russian Federation
| | - Timur I. Madzhidov
- Kazan Federal University, A. M. Butlerov Chemistry Institute, 18 Kremlevskaya St; Kazan 420008 Russian Federation
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27
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Chen G, Zhao Y, Shang L, Waterhouse GIN, Kang X, Wu LZ, Tung CH, Zhang T. Recent Advances in the Synthesis, Characterization and Application of Zn +-containing Heterogeneous Catalysts. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2016; 3:1500424. [PMID: 27818902 PMCID: PMC5072390 DOI: 10.1002/advs.201500424] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 01/09/2016] [Indexed: 06/06/2023]
Abstract
Monovalent Zn+ (3d104s1) systems possess a special electronic structure that can be exploited in heterogeneous catalysis and photocatalysis, though it remains challenge to synthesize Zn+-containing materials. By careful design, Zn+-related species can be synthesized in zeolite and layered double hydroxide systems, which in turn exhibit excellent catalytic potential in methane, CO and CO2 activation. Furthermore, by utilizing advanced characterization tools, including electron spin resonance, X-ray absorption fine structure and density functional theory calculations, the formation mechanism of the Zn+ species and their structure-performance relationships can be understood. Such advanced characterization tools guide the rational design of high-performance Zn+-containing catalysts for efficient energy conversion.
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Affiliation(s)
- Guangbo Chen
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry and Materials Science Northwest University Xi'an 710069 P.R. China; Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 P.R. China
| | - Yufei Zhao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 P.R. China
| | - Lu Shang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 P.R. China
| | | | - Xiaofeng Kang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry and Materials Science Northwest University Xi'an 710069 P.R. China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 P.R. China
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 P.R. China
| | - Tierui Zhang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 P.R. China
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28
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Zhang Y, Ersoy O, Karatutlu A, Little W, Sapelkin A. Local structure of Ge quantum dots determined by combined numerical analysis of EXAFS and XANES data. JOURNAL OF SYNCHROTRON RADIATION 2016; 23:253-259. [PMID: 26698071 DOI: 10.1107/s160057751501913x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 10/10/2015] [Indexed: 06/05/2023]
Abstract
The sensitivity of X-ray absorption near-edge structure (XANES) to the local symmetry has been investigated in small (∼4 nm) matrix-free Ge quantum dots. The FDMNES package was used to calculate the theoretical XANES spectra that were compared with the experimental data of as-prepared and annealed nanoparticles. It was found that XANES data for an as-prepared sample can only be adequately described if the second coordination shell of the diamond-type structural model is included in the FDMNES calculations. This is in contrast to the extended X-ray absorption fine-structure data that show only the first-shell signal. These results suggest that, despite the high degree of disorder and a large surface-to-volume ratio, as-prepared small Ge quantum dots retain the diamond-type symmetry beyond the first shell. Furthermore, we utilized this sensitivity of XANES to the local symmetry to study annealed Ge quantum dots and found evidence for significant structural distortion which we attribute to the existence of surface disorder in the annealed oxygen-free Ge quantum dots.
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Affiliation(s)
- Yuanpeng Zhang
- School of Physics and Astronomy, Queen Mary, University of London, Mile End Road, London E1 4NS, UK
| | - Osman Ersoy
- School of Physics and Astronomy, Queen Mary, University of London, Mile End Road, London E1 4NS, UK
| | - Ali Karatutlu
- School of Physics and Astronomy, Queen Mary, University of London, Mile End Road, London E1 4NS, UK
| | - William Little
- School of Physics and Astronomy, Queen Mary, University of London, Mile End Road, London E1 4NS, UK
| | - Andrei Sapelkin
- School of Physics and Astronomy, Queen Mary, University of London, Mile End Road, London E1 4NS, UK
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Guda SA, Guda AA, Soldatov MA, Lomachenko KA, Bugaev AL, Lamberti C, Gawelda W, Bressler C, Smolentsev G, Soldatov AV, Joly Y. Optimized Finite Difference Method for the Full-Potential XANES Simulations: Application to Molecular Adsorption Geometries in MOFs and Metal-Ligand Intersystem Crossing Transients. J Chem Theory Comput 2015; 11:4512-21. [PMID: 26575941 DOI: 10.1021/acs.jctc.5b00327] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Accurate modeling of the X-ray absorption near-edge spectra (XANES) is required to unravel the local structure of metal sites in complex systems and their structural changes upon chemical or light stimuli. Two relevant examples are reported here concerning the following: (i) the effect of molecular adsorption on 3d metals hosted inside metal-organic frameworks and (ii) light induced dynamics of spin crossover in metal-organic complexes. In both cases, the amount of structural models for simulation can reach a hundred, depending on the number of structural parameters. Thus, the choice of an accurate but computationally demanding finite difference method for the ab initio X-ray absorption simulations severely restricts the range of molecular systems that can be analyzed by personal computers. Employing the FDMNES code [Phys. Rev. B, 2001, 63, 125120] we show that this problem can be handled if a proper diagonalization scheme is applied. Due to the use of dedicated solvers for sparse matrices, the calculation time was reduced by more than 1 order of magnitude compared to the standard Gaussian method, while the amount of required RAM was halved. Ni K-edge XANES simulations performed by the accelerated version of the code allowed analyzing the coordination geometry of CO and NO on the Ni active sites in CPO-27-Ni MOF. The Ni-CO configuration was found to be linear, while Ni-NO was bent by almost 90°. Modeling of the Fe K-edge XANES of photoexcited aqueous [Fe(bpy)3](2+) with a 100 ps delay we identified the Fe-N distance elongation and bipyridine rotation upon transition from the initial low-spin to the final high-spin state. Subsequently, the X-ray absorption spectrum for the intermediate triplet state with expected 100 fs lifetime was theoretically predicted.
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Affiliation(s)
| | | | | | - Kirill A Lomachenko
- Department of Chemistry, NIS and CrisDi Centers, Turin University and INSTM Reference Center , 10125 Turin, Turin, Italy
| | | | - Carlo Lamberti
- Department of Chemistry, NIS and CrisDi Centers, Turin University and INSTM Reference Center , 10125 Turin, Turin, Italy
| | | | - Christian Bressler
- European XFEL, Albert-Einstein-Ring 19, 22761 Hamburg, Germany.,The Hamburg Centre for Ultrafast Imaging (CUI), Universität Hamburg , Luruper Chaussee 149, 22761 Hamburg, Germany
| | | | | | - Yves Joly
- Inst NEEL, Université Grenoble Alpes , 38042 Grenoble, France.,Institut NEEL, CNRS , 38042 Grenoble, France
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