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Wang X, Zhang X, He A, Guo J, Liu Z. Toward Enhancing Performance of Electromagnetic Wave Absorption for Conductive Metal-Organic Frameworks: Nanostructure Engineering or Crystal Morphology Controlling. Inorg Chem 2024; 63:6948-6956. [PMID: 38575907 DOI: 10.1021/acs.inorgchem.4c00387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
Conductive metal-organic frameworks (cMOFs), which have high porosity and intrinsic electron conductivity, are regarded as ideal candidates for electromagnetic wave (EMW) absorption materials. Controlling the nanostructure of absorbers may be one of the effective strategies to improve the electromagnetic wave (EMW) absorption performance. Herein, a series of conductive Cu-HHTP MOFs (HHTP = 2,3,6,7,10,11-hexahydroxytriphenyl hydrates) with different nanostructures or crystal morphologies were successfully synthesized by using different structural inducers to regulate the changes in the morphology, thereby improving the EMW absorption performance. Specifically, when ammonia was used as an inducer, the obtained A-Cu-HHTP with a nanosheet structure exhibited excellent EMW absorption performance. The minimum reflection loss (RLmin) can reach -51.08 dB at 7.25 GHz with a thickness of 4.4 mm, and the maximum effective absorption bandwidth (EAB) can cover 5.73 GHz at 2.5 mm. The influence of the nanostructures of the cMOFs on the dielectric and EMW absorption performance was clarified. The nanosheet structure of A-Cu-HHTP increases its specific surface area, which expands multiple scattering and reflection paths of incident EMW; Meanwhile, the unique structure facilitates the formation of more heterogeneous interfaces, optimizing impedance matching. The significant improvement in EMW performance is mainly attributed to multiple reflections and scattering as well as impedance matching. This work not only provides a simple and effective strategy for improving electromagnetic wave absorption performance but also offers guidelines for preparing morphology functional cMOF materials.
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Affiliation(s)
- Xueling Wang
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, P. R. China
| | - Xuan Zhang
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, P. R. China
| | - Aining He
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, P. R. China
| | - Jing Guo
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, P. R. China
| | - Zhiliang Liu
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, P. R. China
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2
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Suaud N, Colin A, Bouammali M, Mallah T, Guihéry N. Understanding the Electronic Structure of Magnetic Trinuclear Complexes Based on the Tris-Dioxolene Triphenylene Non-Innocent Bridging Ligand, a Theoretical Study. Chemistry 2024; 30:e202302256. [PMID: 37922225 DOI: 10.1002/chem.202302256] [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: 07/14/2023] [Revised: 11/03/2023] [Accepted: 11/03/2023] [Indexed: 11/05/2023]
Abstract
A complete theoretical analysis using first the simple Hückel model followed by more sophisticated multi-reference calculations on a trinuclear Ni(II) complex (Tp#Ni3 HHTP), bearing the non-innocent bridging ligand HHTP3- , is carried out. The three semiquinone moieties of HHTP3- couple antiferromagnetically and lead to a single unpaired electron localized on one of the moieties. The calculated exchange coupling integrals together with the zero-field parameters allow, when varied within a certain range, reproducing the experimental data. These results are generalized for two similar other trinuclear complexes containing Ni(II) and Cu(II). The electronic structure of HHTP3- turns out to be independent of both the chemical nature and the geometry of the metal ions. We also establish a direct correlation between the geometrical and the electronic structures of the non-innocent ligand that is consistent with the results of calculations. It allows experimentalists to get insight into the magnetic behavior of this type of complexes by an analysis of their X-ray structure.
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Affiliation(s)
- Nicolas Suaud
- Laboratoire de Chimie et Physique Quantiques (LCPQ), Université de Toulouse, CNRS, 118 route de Narbonne, F-31062, Toulouse, France
| | - Aristide Colin
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS, Université Paris-Saclay, 17, avenue des Sciences, 91400, Orsay, France
| | - Mohammed Bouammali
- Laboratoire de Chimie et Physique Quantiques (LCPQ), Université de Toulouse, CNRS, 118 route de Narbonne, F-31062, Toulouse, France
| | - Talal Mallah
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS, Université Paris-Saclay, 17, avenue des Sciences, 91400, Orsay, France
| | - Nathalie Guihéry
- Laboratoire de Chimie et Physique Quantiques (LCPQ), Université de Toulouse, CNRS, 118 route de Narbonne, F-31062, Toulouse, France
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3
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Zhang Y, Wang J, Apostol P, Rambabu D, Eddine Lakraychi A, Guo X, Zhang X, Lin X, Pal S, Rao Bakuru V, Chen X, Vlad A. Bimetallic Anionic Organic Frameworks with Solid-State Cation Conduction for Charge Storage Applications. Angew Chem Int Ed Engl 2023; 62:e202310033. [PMID: 37651171 DOI: 10.1002/anie.202310033] [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: 07/14/2023] [Revised: 08/30/2023] [Accepted: 08/31/2023] [Indexed: 09/01/2023]
Abstract
A new phosphonate-based anionic bimetallic organic framework, with the general formula of A4 -Zn-DOBDP (wherein A is Li+ or Na+ , and DOBDP6- is the 2,5-dioxido-1,4-benzenediphosphate ligand) is prepared and characterized for energy storage applications. With four alkali cations per formula unit, the A4 -Zn-DOBDP MOF is found to be the first example of non-solvated cation conducting MOF with measured conductivities of 5.4×10-8 S cm-1 and 3.4×10-8 S cm-1 for Li4 - and Na4 - phases, indicating phase and composition effects of Li+ and Na+ shuttling through the channels. Three orders of magnitude increase in ionic conductivity is further attained upon solvation with propylene carbonate, placing this system among the best MOF ionic conductors at room temperature. As positive electrode material, Li4 -Zn-DOBDP delivers a specific capacity of 140 mAh g-1 at a high average discharge potential of 3.2 V (vs. Li+ /Li) with 90 % of capacity retention over 100 cycles. The significance of this research extends from the development of a new family of electroactive phosphonate-based MOFs with inherent ionic conductivity and reversible cation storage, to providing elementary insights into the development of highly sought yet still evasive MOFs with mixed-ion and electron conduction for energy storage applications.
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Affiliation(s)
- Yan Zhang
- College of Materials Science and Engineering, Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology, Hunan University, Changsha, 410082, Hunan, P. R. China
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, 1348, Louvain-la-Neuve, Belgium
| | - Jiande Wang
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, 1348, Louvain-la-Neuve, Belgium
| | - Petru Apostol
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, 1348, Louvain-la-Neuve, Belgium
| | - Darsi Rambabu
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, 1348, Louvain-la-Neuve, Belgium
| | - Alae Eddine Lakraychi
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, 1348, Louvain-la-Neuve, Belgium
| | - Xiaolong Guo
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, 1348, Louvain-la-Neuve, Belgium
| | - Xiaozhe Zhang
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, 1348, Louvain-la-Neuve, Belgium
| | - Xiaodong Lin
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, 1348, Louvain-la-Neuve, Belgium
| | - Shubhadeep Pal
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, 1348, Louvain-la-Neuve, Belgium
| | - Vasudeva Rao Bakuru
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, 1348, Louvain-la-Neuve, Belgium
| | - Xiaohua Chen
- College of Materials Science and Engineering, Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology, Hunan University, Changsha, 410082, Hunan, P. R. China
| | - Alexandru Vlad
- Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, 1348, Louvain-la-Neuve, Belgium
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4
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Park KC, Kittikhunnatham P, Lim J, Thaggard GC, Liu Y, Martin CR, Leith GA, Toler DJ, Ta AT, Birkner N, Lehman-Andino I, Hernandez-Jimenez A, Morrison G, Amoroso JW, Zur Loye HC, DiPrete DP, Smith MD, Brinkman KS, Phillpot SR, Shustova NB. f-block MOFs: A Pathway to Heterometallic Transuranics. Angew Chem Int Ed Engl 2023; 62:e202216349. [PMID: 36450099 DOI: 10.1002/anie.202216349] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 11/29/2022] [Accepted: 11/30/2022] [Indexed: 12/05/2022]
Abstract
A novel series of heterometallic f-block-frameworks including the first examples of transuranic heterometallic 238 U/239 Pu-metal-organic frameworks (MOFs) and a novel monometallic 239 Pu-analog are reported. In combination with theoretical calculations, we probed the kinetics and thermodynamics of heterometallic actinide(An)-MOF formation and reported the first value of a U-to-Th transmetallation rate. We concluded that formation of uranyl species could be a driving force for solid-state metathesis. Density of states near the Fermi edge, enthalpy of formation, band gap, proton affinity, and thermal/chemical stability were probed as a function of metal ratios. Furthermore, we achieved 97 % of the theoretical maximum capacity for An-integration. These studies shed light on fundamental aspects of actinide chemistry and also foreshadow avenues for the development of emerging classes of An-containing materials, including radioisotope thermoelectric generators or metalloradiopharmaceuticals.
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Affiliation(s)
- Kyoung Chul Park
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA
| | | | - Jaewoong Lim
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA
| | - Grace C Thaggard
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA
| | - Yuan Liu
- Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, USA
| | - Corey R Martin
- Savannah River National Laboratory, Aiken, SC 29808, USA
| | - Gabrielle A Leith
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA
| | - Donald J Toler
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA
| | - An T Ta
- Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, USA
| | - Nancy Birkner
- Department of Materials Science and Engineering, Clemson University, Clemson, SC 29634, USA.,Center for Nuclear Environmental Engineering Sciences and Radioactive Waste Management (NEESRWM), Clemson University, Clemson, SC 29634, USA
| | | | | | - Gregory Morrison
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA
| | - Jake W Amoroso
- Savannah River National Laboratory, Aiken, SC 29808, USA
| | - Hans-Conrad Zur Loye
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA.,Savannah River National Laboratory, Aiken, SC 29808, USA
| | - Dave P DiPrete
- Savannah River National Laboratory, Aiken, SC 29808, USA
| | - Mark D Smith
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA
| | - Kyle S Brinkman
- Department of Materials Science and Engineering, Clemson University, Clemson, SC 29634, USA.,Center for Nuclear Environmental Engineering Sciences and Radioactive Waste Management (NEESRWM), Clemson University, Clemson, SC 29634, USA
| | - Simon R Phillpot
- Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, USA
| | - Natalia B Shustova
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29208, USA
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5
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Miao Z, Quainoo T, Czyszczon-Burton TM, Rotthowe N, Parr JM, Liu ZF, Inkpen MS. Charge Transport Across Dynamic Covalent Chemical Bridges. NANO LETTERS 2022; 22:8331-8338. [PMID: 36215246 PMCID: PMC9614958 DOI: 10.1021/acs.nanolett.2c03288] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 10/03/2022] [Indexed: 06/16/2023]
Abstract
Relationships between chemical structure and conductivity in ordered polymers (OPs) are difficult to probe using bulk samples. We propose that conductance measurements of appropriate molecular-scale models can reveal trends in electronic coupling(s) between repeat units that may help inform OP design. Here, we apply the scanning tunneling microscope-based break-junction (STM-BJ) method to study transport through single-molecules comprising OP-relevant imine, imidazole, diazaborole, and boronate ester dynamic covalent chemical bridges. Notably, solution-stable boron-based compounds dissociate in situ unless measured under a rigorously inert glovebox atmosphere. We find that junction conductance negatively correlates with the electronegativity difference between bridge atoms, and corroborative first-principles calculations further reveal a different nodal structure in the transmission eigenchannels of boronate ester junctions. This work reaffirms expectations that highly polarized bridge motifs represent poor choices for the construction of OPs with high through-bond conductivity and underscores the utility of glovebox STM-BJ instrumentation for studies of air-sensitive materials.
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Affiliation(s)
- Zelin Miao
- Department
of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Timothy Quainoo
- Department
of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - Thomas M. Czyszczon-Burton
- Department
of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Nils Rotthowe
- Department
of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Joseph M. Parr
- Department
of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Zhen-Fei Liu
- Department
of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - Michael S. Inkpen
- Department
of Chemistry, University of Southern California, Los Angeles, California 90089, United States
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6
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Park KC, Martin CR, Leith GA, Thaggard GC, Wilson GR, Yarbrough BJ, Maldeni Kankanamalage BKP, Kittikhunnatham P, Mathur A, Jatoi I, Manzi MA, Lim J, Lehman-Andino I, Hernandez-Jimenez A, Amoroso JW, DiPrete DP, Liu Y, Schaeperkoetter J, Misture ST, Phillpot SR, Hu S, Li Y, Leydier A, Proust V, Grandjean A, Smith MD, Shustova NB. Capture Instead of Release: Defect-Modulated Radionuclide Leaching Kinetics in Metal-Organic Frameworks. J Am Chem Soc 2022; 144:16139-16149. [PMID: 36027644 DOI: 10.1021/jacs.2c06905] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Comparison of defect-controlled leaching-kinetics modulation of metal-organic frameworks (MOFs) and porous functionalized silica-based materials was performed on the example of a radionuclide and radionuclide surrogate for the first time, revealing an unprecedented readsorption phenomenon. On a series of zirconium-based MOFs as model systems, we demonstrated the ability to capture and retain >99% of the transuranic 241Am radionuclide after 1 week of storage. We report the possibility of tailoring radionuclide release kinetics in MOFs through framework defects as a function of postsynthetically installed organic ligands including cation-chelating crown ether-based linkers. Based on comprehensive analysis using spectroscopy (EXAFS, UV-vis, FTIR, and NMR), X-ray crystallography (single crystal and powder), and theoretical calculations (nine kinetics models and structure simulations), we demonstrated the synergy of radionuclide integration methods, topological restrictions, postsynthetic scaffold modification, and defect engineering. This combination is inaccessible in any other material and highlights the advantages of using well-defined frameworks for gaining fundamental knowledge necessary for the advancement of actinide-based material development, providing a pathway for addressing upcoming challenges in the nuclear waste administration sector.
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Affiliation(s)
- Kyoung Chul Park
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Corey R Martin
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Gabrielle A Leith
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Grace C Thaggard
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Gina R Wilson
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Brandon J Yarbrough
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Buddhima K P Maldeni Kankanamalage
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Preecha Kittikhunnatham
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Abhijai Mathur
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Isak Jatoi
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Mackenzie A Manzi
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Jaewoong Lim
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | | | | | - Jake W Amoroso
- Savannah River National Laboratory, Aiken, South Carolina 29808, United States
| | - David P DiPrete
- Savannah River National Laboratory, Aiken, South Carolina 29808, United States
| | - Yuan Liu
- Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Joseph Schaeperkoetter
- Kazuo Inamori School of Engineering, Alfred University, Alfred, New York 14802, United States
| | - Scott T Misture
- Kazuo Inamori School of Engineering, Alfred University, Alfred, New York 14802, United States
| | - Simon R Phillpot
- Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611, United States
| | - Shenyang Hu
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Yulan Li
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Antoine Leydier
- Commissariat à l'Énergie Atomique (CEA), DES, ISEC, DMRC, University Montpellier, Marcoule, BP 17171, 30207 Bagnols-sur-Cèze Cedex, France
| | - Vanessa Proust
- Commissariat à l'Énergie Atomique (CEA), DES, ISEC, DMRC, University Montpellier, Marcoule, BP 17171, 30207 Bagnols-sur-Cèze Cedex, France
| | - Agnès Grandjean
- Commissariat à l'Énergie Atomique (CEA), DES, ISEC, DMRC, University Montpellier, Marcoule, BP 17171, 30207 Bagnols-sur-Cèze Cedex, France
| | - Mark D Smith
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Natalia B Shustova
- Department of Chemistry and Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
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7
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Yang L, Oppenheim JJ, Dincă M. Strong magnetic exchange coupling in a radical-bridged trinuclear nickel complex. Dalton Trans 2022; 51:8583-8587. [PMID: 35612004 DOI: 10.1039/d2dt01337a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reaction of 2,3,6,7,10,11-hexaaminotriphenylene hexahydrochloride (HATP·6HCl) and (TpPhNi)Cl (TpPh = tris(3,5-diphenyl-1-pyrazolyl)borate) produces the radical-bridged trinickel complex [(TpPhNi)3(HITP)] (HITP3-˙ = 2,3,6,7,10,11-hexaiminotriphenylene). Magnetic measurements and broken-symmetry density functional theory calculations reveal strong exchange coupling persisting at room temperature between HITP3-˙ and two of the three Ni2+ centers, a rare example of strong radical-mediated magnetic coupling in multimetallic complexes. These results demonstrate the potential of radical-bearing tritopic HITP ligands as building blocks for extended molecule-based magnetic materials.
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Affiliation(s)
- Luming Yang
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA.
| | - Julius J Oppenheim
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA.
| | - Mircea Dincă
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA.
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9
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Intrator JA, Orchanian NM, Clough AJ, Haiges R, Marinescu SC. Electronically-coupled redox centers in trimetallic cobalt complexes. Dalton Trans 2022; 51:5660-5672. [PMID: 35322818 DOI: 10.1039/d1dt03404a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Synthesis and isolation of molecular building blocks of metal-organic frameworks (MOFs) can provide unique opportunities for characterization that would otherwise be inaccessible due to the heterogeneous nature of MOFs. Herein, we report a series of trinuclear cobalt complexes incorporating dithiolene ligands, triphenylene-2,3,6,7,10,11-hexathiolate (THT) (13+), and benzene hexathiolate (BHT) (23+), with 1,1,1,-tris(diphenylphosphinomethyl)ethane (triphos) employed as the capping ligand. Single crystal X-ray analyses of 13+ and 23+ display three five-coordinate cobalt centers bound to the triphos and dithiolene ligands in a distorted square pyramidal geometry. Cyclic voltammetry studies of 13+ and 23+ reveal three redox features associated with the formation of mixed valence states due to the sequential reduction of the redox-active metal centers (CoIII/II). Using this electrochemical data, the comproportionality values were determined for 1 and 2 (log Kc = 1.4 and 1.5 for 1, and 4.7 and 5.8 for 2), suggesting strong resonance-stabilized coupling of the metal centers, with stronger electronic coupling observed for complex 2 compared to that for complex 1. Cyclic voltammetry studies were also performed in solvents of varying polarity, whereupon the difference in the standard potentials (ΔE1/2) for 1 and 2 was found to shift as a function of the polarity of the solvent, indicating a negative correlation between the dielectric constant of the electrochemical medium and the stability of the mixed valence species. Spectroelectrochemical studies of in situ generated multi-valent (MV) states of complexes 1 and 2 display characteristic NIR intervalence charge transfer (IVCT) bands, and analysis of the IVCT transitions for complex 2 suggests a weakly coupled class II multi-valent species and relatively large electronic coupling factors (1700 cm-1 for the first multi-valent state of 22+, and 1400 and 4000 cm-1 for the second multi-valent state of 2+). Density functional theory (DFT) calculations indicate a significant deviation in relative energies of the frontier orbitals of complexes 13+, 23+, and 3+ that contrasts those calculated for the analogous trinuclear cobalt dithiolene complexes employing pentamethylcyclopentadienyl (Cp*) as the capping ligand (Co3Cp*3THT and Co3Cp*3BHT, respectively), and may be a result of the cationic nature of complexes 13+, 23+, and 3+.
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Affiliation(s)
- Jeremy A Intrator
- Department of Chemistry, University of Southern California, Los Angeles, CA, 900089, USA.
| | - Nicholas M Orchanian
- Department of Chemistry, University of Southern California, Los Angeles, CA, 900089, USA.
| | - Andrew J Clough
- Department of Chemistry, University of Southern California, Los Angeles, CA, 900089, USA.
| | - Ralf Haiges
- Department of Chemistry, University of Southern California, Los Angeles, CA, 900089, USA.
| | - Smaranda C Marinescu
- Department of Chemistry, University of Southern California, Los Angeles, CA, 900089, USA.
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10
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Wang J, Hu H, Lu S, Hu J, Zhu H, Duan F, Du M. Conductive metal and covalent organic frameworks for electrocatalysis: design principles, recent progress and perspective. NANOSCALE 2022; 14:277-288. [PMID: 34935018 DOI: 10.1039/d1nr06197f] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Metal and covalent organic frameworks (MOFs/COFs) are emerging promising candidates in the field of catalysts due to their porous nature, chemically well-defined active sites and structural diversity. However, they are typically provided with poor electrical conductivity, which is insufficient for them to work as satisfying electrocatalysts. Designing and fabricating MOFs/COFs with high conductivity presents a new avenue towards special electrochemical reactions. This minireview firstly highlighted the origin and design principles of conductive MOFs/COFs for electrocatalysis on the basis of typical charge transfer mechanisms, that is "through space", "extended conjugation" and "through bond". An overview of conductive MOFs/COFs used in the electrocatalytic carbon dioxide reduction reaction (CO2RR), water splitting and the oxygen reduction reaction (ORR) was then made to track the very recent progress. In the final remarks, the present challenges and perspectives for the use of conductive MOFs/COFs as electrocatalysts including their structural optimization, feasible applications and structure-activity correlation are proposed.
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Affiliation(s)
- Jinyan Wang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China.
| | - Hongyin Hu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China.
| | - Shuanglong Lu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China.
| | - Jundie Hu
- School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China
| | - Han Zhu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China.
| | - Fang Duan
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China.
| | - Mingliang Du
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China.
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11
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Zheng X, Wu X, Zhang L, Kang J, Zhou M, Zhong Y, Zhang J, Wang L. High spin Fe 3+-related bonding strength and electron transfer for sensitive and stable SERS detection. Chem Sci 2022; 13:12560-12566. [PMID: 36382283 PMCID: PMC9629176 DOI: 10.1039/d2sc03998b] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 10/05/2022] [Indexed: 11/21/2022] Open
Abstract
The SERS performance of trimetallic MIL-101(FeNiTi) and the spin state of Fe3+ is positively correlated. The SERS enhancement mechanism is explored regarding the bonding strength and charge transfer between molecules and MIL-101.
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Affiliation(s)
- Xinlu Zheng
- Shanghai Engineering Research Center for Multi-Media Environmental Catalysis and Resource Utilization, Key Lab for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Xiao Wu
- Shanghai Engineering Research Center for Multi-Media Environmental Catalysis and Resource Utilization, Key Lab for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Letian Zhang
- Shanghai Engineering Research Center for Multi-Media Environmental Catalysis and Resource Utilization, Key Lab for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Jianjian Kang
- Shanghai Engineering Research Center for Multi-Media Environmental Catalysis and Resource Utilization, Key Lab for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Man Zhou
- Shanghai Engineering Research Center for Multi-Media Environmental Catalysis and Resource Utilization, Key Lab for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Yang Zhong
- Shanghai Engineering Research Center for Multi-Media Environmental Catalysis and Resource Utilization, Key Lab for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Jinlong Zhang
- Shanghai Engineering Research Center for Multi-Media Environmental Catalysis and Resource Utilization, Key Lab for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Lingzhi Wang
- Shanghai Engineering Research Center for Multi-Media Environmental Catalysis and Resource Utilization, Key Lab for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science & Technology, 130 Meilong Road, Shanghai, 200237, China
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