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Ishizuka T, Kojima T. Oxidative and Reductive Manipulation of C1 Resources by Bio-Inspired Molecular Catalysts to Produce Value-Added Chemicals. Acc Chem Res 2024; 57:2437-2447. [PMID: 39116211 DOI: 10.1021/acs.accounts.4c00390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2024]
Abstract
ConspectusTo tackle the energy and environmental concerns the world faces, much attention is given to catalytic reactions converting methane (CH4) and carbon dioxide (CO2) as abundant C1 resources into value-added chemicals with high efficiency and selectivity. In the oxidative conversion of CH4 to methanol, it is necessary to solve the requirement of strong oxidants due to the large bond-dissociation energy (BDE) of the C-H bonds in methane and achieve suppression of overoxidation due to the smaller BDE of the C-H bond in methanol as the product. On the other hand, to efficiently perform CO2 reduction, proton-coupled electron transfer (PCET) processes are required since the reduction potential of CO2 becomes positive by using proton-coupled processes; however, under the acidic conditions required for PCET, hydrogen evolution by the reduction of protons becomes competitive with CO2 reduction. Thus, it is indispensable to develop efficient catalysts for selective CO2 reduction. Recently, we have developed efficient catalytic reactions toward the alleviation of the concerns mentioned above. Concerning CH4 oxidation, inspired by metalloenzymes that oxidize hydrophobic organic substrates, a hydrophobic second coordination sphere (SCS) was introduced to an FeII complex bearing a pentadentate N-heterocyclic carbene ligand, and the FeII complex was used as a catalyst for CH4 oxidation in aqueous media. Consequently, CH4 was efficiently and selectively oxidized to methanol with 83% selectivity and a turnover number of 500. In contrast, when methanol was used as a substrate for catalytic oxidation by the FeII complex, oxidation products were obtained in a negligible yield, which was comparable to that of the control experiment without the catalyst. Therefore, the hydrophobic SCS of the FeII complex can capture only hydrophobic substrates such as CH4 and release hydrophilic products such as methanol to the aqueous medium for suppressing overoxidation ("catch-and-release" mechanism). On the other hand, for photocatalytic CO2 reduction, we have developed NiII complexes with N2S2-chelating ligands as catalysts, which have been inspired by carbon monoxide dehydrogenase, and have also introduced a binding site of Lewis-acidic metal ions to the SCS of the Ni complex. When Mg2+ was applied as a moderate Lewis acid, a Mg2+-bound Ni catalyst allowed us to achieve remarkable enhancement of the photocatalytic CO2 reduction to afford CO as the product with over 99% selectivity and a quantum yield of 11.4%. Divalent metal ions besides Mg2+ also showed similar positive impacts on photocatalytic CO2 reduction, whereas monovalent metal ions exhibited almost no effects and trivalent metal ions exclusively promoted hydrogen evolution. In this Account, we highlight our recent progress in the catalytic manipulations of CH4 and CO2 as C1 resources.
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Affiliation(s)
- Tomoya Ishizuka
- Department of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Takahiko Kojima
- Department of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
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2
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Bunjes O, Rittmeier A, Hedman D, Hua SA, Paul LA, Meyer F, Ding F, Wenderoth M. Testing functional anchor groups for the efficient immobilization of molecular catalysts on silver surfaces. Commun Chem 2024; 7:107. [PMID: 38724592 PMCID: PMC11082172 DOI: 10.1038/s42004-024-01186-3] [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: 12/13/2022] [Accepted: 04/23/2024] [Indexed: 05/12/2024] Open
Abstract
Modifications of complexes by attachment of anchor groups are widely used to control molecule-surface interactions. This is of importance for the fabrication of (catalytically active) hybrid systems, viz. of surface immobilized molecular catalysts. In this study, the complex fac-Re(S-Sbpy)(CO)3Cl (S-Sbpy = 3,3'-disulfide-2,2'-bipyridine), a sulfurated derivative of the prominent Re(bpy)(CO)3Cl class of CO2 reduction catalysts, was deposited onto the clean Ag(001) surface at room temperature. The complex is thermostable upon sublimation as supported by infrared absorption and nuclear magnetic resonance spectroscopy. Its anchoring process has been analyzed using scanning tunneling microscopy (STM) and density functional theory (DFT) calculations. The growth behavior was directly contrasted to the one of the parent complex fac-Re(bpy)(CO)3Cl (bpy = 2,2'-bipyridine). The sulfurated complex nucleates as single molecule at different surface sites and at molecule clusters. In contrast, for the parent complex nucleation only occurs in clusters of several molecules at specifically oriented surface steps. While this shows that surface immobilization of the sulfurated complex is more efficient as compared to the parent, symmetry analysis of the STM topographic data supported by DFT calculations indicates that more than 90% of the complexes adsorb in a geometric configuration very similar to the one of the parent complex.
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Affiliation(s)
- Ole Bunjes
- IV. Physikalisches Institut, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, 37077, Göttingen, Germany
| | - Alexandra Rittmeier
- IV. Physikalisches Institut, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, 37077, Göttingen, Germany
| | - Daniel Hedman
- Center for Multidimensional Carbon Materials, Institute for Basic Science (IBS), Ulsan, 44919, Republic of Korea
| | - Shao-An Hua
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstraße 4, 37077, Göttingen, Germany
| | - Lucas A Paul
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstraße 4, 37077, Göttingen, Germany
| | - Franc Meyer
- Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstraße 4, 37077, Göttingen, Germany
- International Center for Advanced Studies of Energy Conversion (ICASEC), Georg-August-Universität Göttingen, D-37077, Göttingen, Germany
| | - Feng Ding
- Center for Multidimensional Carbon Materials, Institute for Basic Science (IBS), Ulsan, 44919, Republic of Korea
- Department of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Martin Wenderoth
- IV. Physikalisches Institut, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, 37077, Göttingen, Germany.
- International Center for Advanced Studies of Energy Conversion (ICASEC), Georg-August-Universität Göttingen, D-37077, Göttingen, Germany.
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Xiao Y, Xie F, Zhang HT, Zhang MT. Bioinspired Binickel Catalyst for Carbon Dioxide Reduction: The Importance of Metal-ligand Cooperation. JACS AU 2024; 4:1207-1218. [PMID: 38559717 PMCID: PMC10976602 DOI: 10.1021/jacsau.4c00047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 02/17/2024] [Accepted: 02/21/2024] [Indexed: 04/04/2024]
Abstract
Catalyst design for the efficient CO2 reduction reaction (CO2RR) remains a crucial challenge for the conversion of CO2 to fuels. Natural Ni-Fe carbon monoxide dehydrogenase (NiFe-CODH) achieves reversible conversion of CO2 and CO at nearly thermodynamic equilibrium potential, which provides a template for developing CO2RR catalysts. However, compared with the natural enzyme, most biomimetic synthetic Ni-Fe complexes exhibit negligible CO2RR catalytic activities, which emphasizes the significance of effective bimetallic cooperation for CO2 activation. Enlightened by bimetallic synergy, we herein report a dinickel complex, NiIINiII(bphpp)(AcO)2 (where NiNi(bphpp) is derived from H2bphpp = 2,9-bis(5-tert-butyl-2-hydroxy-3-pyridylphenyl)-1,10-phenanthroline) for electrocatalytic reduction of CO2 to CO, which exhibits a remarkable reactivity approximately 5 times higher than that of the mononuclear Ni catalyst. Electrochemical and computational studies have revealed that the redox-active phenanthroline moiety effectively modulates the electron injection and transfer akin to the [Fe3S4] cluster in NiFe-CODH, and the secondary Ni site facilitates the C-O bond activation and cleavage through electron mediation and Lewis acid characteristics. Our work underscores the significant role of bimetallic cooperation in CO2 reduction catalysis and provides valuable guidance for the rational design of CO2RR catalysts.
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Affiliation(s)
- Yao Xiao
- Center of Basic Molecular
Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Fei Xie
- Center of Basic Molecular
Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Hong-Tao Zhang
- Center of Basic Molecular
Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Ming-Tian Zhang
- Center of Basic Molecular
Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
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4
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Gotico P, Halime Z, Leibl W, Aukauloo A. Bimetallic Molecular Catalyst Design for Carbon Dioxide Reduction. Chempluschem 2023; 88:e202300222. [PMID: 37466131 DOI: 10.1002/cplu.202300222] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 07/18/2023] [Accepted: 07/19/2023] [Indexed: 07/20/2023]
Abstract
The core challenge in developing cost-efficient catalysts for carbon dioxide (CO2 ) conversion mainly lies in controlling its complex reaction pathways. One such strategy exploits bimetallic cooperativity, which relies on the synergistic interaction between two metal centers to activate and convert the CO2 substrate. While this approach has seen an important trend in heterogeneous catalysis as a handle to control stabilities of surface intermediates, it has not often been utilized in molecular and heterogenized molecular catalytic systems. In this review, we gather general principles on how natural CO2 activating enzymes take advantage of bimetallic strategy and how phosphines, cyclams, polypyridyls, porphyrins, and cryptates-based homo- and hetero-bimetallic molecular catalysts can help understand the synergistic effect of two metal centers.
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Affiliation(s)
- Philipp Gotico
- Université Paris Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell, 91198, Gif Sur Yvette, France
| | - Zakaria Halime
- Université Paris Saclay, CNRS, Institut de Chimie Moléculaire et des Matériaux d'Orsay, 91405, Orsay, France
| | - Winfried Leibl
- Université Paris Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell, 91198, Gif Sur Yvette, France
| | - Ally Aukauloo
- Université Paris Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell, 91198, Gif Sur Yvette, France
- Université Paris Saclay, CNRS, Institut de Chimie Moléculaire et des Matériaux d'Orsay, 91405, Orsay, France
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5
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Bohn A, Moreno JJ, Thuéry P, Robert M, Rivada-Wheelaghan O. Electrocatalytic CO 2 Reduction with a Binuclear Bis-Terpyridine Pyrazole-Bridged Cobalt Complex. Chemistry 2023; 29:e202202361. [PMID: 36330884 PMCID: PMC10107111 DOI: 10.1002/chem.202202361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 10/30/2022] [Accepted: 11/04/2022] [Indexed: 11/06/2022]
Abstract
A pyrazole-based ligand substituted with terpyridine groups at the 3 and 5 positions has been synthesized to form the dinuclear cobalt complex 1, that electrocatalytically reduces carbon dioxide (CO2 ) to carbon monoxide (CO) in the presence of Brønsted acids in DMF. Chemical, electrochemical and UV-vis spectro-electrochemical studies under inert atmosphere indicate pairwise reduction processes of complex 1. Infrared spectro-electrochemical studies under CO2 and CO atmosphere are consistent with a reduced CO-containing dicobalt complex which results from the electroreduction of CO2 . In the presence of trifluoroethanol (TFE), electrocatalytic studies revealed single-site mechanism with up to 94 % selectivity towards CO formation when 1.47 M TFE were present, at -1.35 V vs. Saturated Calomel Electrode in DMF (0.39 V overpotential). The low faradaic efficiencies obtained (<50 %) are attributed to the generation of CO-containing species formed during the electrocatalytic process, which inhibit the reduction of CO2 .
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Affiliation(s)
- Antoine Bohn
- Laboratoire d'Electrochimie Moléculaire, Université Paris Cité, CNRS, 75006, Paris, France
| | - Juan José Moreno
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica, Consejo Superior de Investigaciones Científicas (CSIC) and Universidad de Sevilla, Avenida Américo Vespucio 49, 41092, Sevilla, Spain
| | - Pierre Thuéry
- NIMBE, Université Paris-Saclay, CEA, CNRS, 91191, Gif-sur-Yvette, France
| | - Marc Robert
- Laboratoire d'Electrochimie Moléculaire, Université Paris Cité, CNRS, 75006, Paris, France.,Institut Universitaire de France (IUF), 75005, Paris, France
| | - Orestes Rivada-Wheelaghan
- Laboratoire d'Electrochimie Moléculaire, Université Paris Cité, CNRS, 75006, Paris, France.,Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica, Consejo Superior de Investigaciones Científicas (CSIC) and Universidad de Sevilla, Avenida Américo Vespucio 49, 41092, Sevilla, Spain
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6
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Isopi J, Quartapelle Procopio E, Veronese L, Malferrari M, Valenti G, Panigati M, Paolucci F, Marcaccio M. Electrochemical Characterization and CO 2 Reduction Reaction of a Family of Pyridazine-Bridged Dinuclear Mn(I) Carbonyl Complexes. Molecules 2023; 28:molecules28031138. [PMID: 36770804 PMCID: PMC9922005 DOI: 10.3390/molecules28031138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 01/17/2023] [Accepted: 01/18/2023] [Indexed: 01/26/2023] Open
Abstract
Three recently synthesized neutral dinuclear carbonyl manganese complexes with the pyridazine bridging ligand, of general formula [Mn2(μ-ER)2(CO)6(μ-pydz)] (pydz = pyridazine; E = O or S; R = methyl or phenyl), have been investigated by cyclic voltammetry in dimethylformamide and acetonitrile both under an inert argon atmosphere and in the presence of carbon dioxide. This family of Mn(I) compounds behaves interestingly at negative potentials in the presence of CO2. Based on this behavior, which is herein discussed, a rather efficient catalytic mechanism for the CO2 reduction reaction toward the generation of CO has been hypothesized.
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Affiliation(s)
- Jacopo Isopi
- Dipartimento di Chimica “Giacomo Ciamician”, Università di Bologna, Via Selmi 2, 40126 Bologna, Italy
| | | | - Lorenzo Veronese
- Dipartimento di Chimica, Università di Milano, Via Golgi 19, 20133 Milano, Italy
| | - Marco Malferrari
- Dipartimento di Chimica “Giacomo Ciamician”, Università di Bologna, Via Selmi 2, 40126 Bologna, Italy
| | - Giovanni Valenti
- Dipartimento di Chimica “Giacomo Ciamician”, Università di Bologna, Via Selmi 2, 40126 Bologna, Italy
| | - Monica Panigati
- Dipartimento di Chimica, Università di Milano, Via Golgi 19, 20133 Milano, Italy
- Consorzio INSTM, Via G. Giusti 9, 50121 Firenze, Italy
| | - Francesco Paolucci
- Dipartimento di Chimica “Giacomo Ciamician”, Università di Bologna, Via Selmi 2, 40126 Bologna, Italy
- Correspondence: (F.P.); (M.M.)
| | - Massimo Marcaccio
- Dipartimento di Chimica “Giacomo Ciamician”, Università di Bologna, Via Selmi 2, 40126 Bologna, Italy
- Correspondence: (F.P.); (M.M.)
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7
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Xia W, Wang F. Molecular catalysts design: Intramolecular supporting site assisting to metal center for efficient CO2 photo- and electroreduction. MOLECULAR CATALYSIS 2023. [DOI: 10.1016/j.mcat.2022.112884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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8
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Ge X, Rao Y, Xu L, Zhou M, Kurosaki R, Aratani N, Osuka A, Song J. Bottom-Up Synthesis of Multiply Fused Pd II Anthriporphyrinoids. ACS CENTRAL SCIENCE 2022; 8:1627-1632. [PMID: 36589884 PMCID: PMC9801503 DOI: 10.1021/acscentsci.2c01218] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Indexed: 06/17/2023]
Abstract
Anthriporphyrinoid and its dimeric homologues were synthesized by Suzuki-Miyaura coupling and subsequent oxidation. Both porphyrinoids were smoothly converted to their PdII complexes and were further decorated by Suzuki-Miyaura coupling with thiophene derivatives and subsequent oxidative fusion reaction to provide multiply fused compounds. Most PdII anthriporphyrinoids have been structurally well characterized to be planar for monomeric and helically twisted for dimeric species. The dimeric anthriporphyrinoids show paratropic ring currents due to their global antiaromatic networks, the extent of which increases with an increase of conjugated network. Multiply fused dimeric anthriporphyrinoids show helical structures, fully reversible six redox potentials, small HOMO-LUMO gaps, and absorption tails reaching in the near-infrared region, suggesting the high potential of this approach to explore molecular graphene. Optical separations of the dimeric helical species were accomplished, and racemization barrier heights were determined.
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Affiliation(s)
- Xinrun Ge
- Key
Laboratory of Chemical Biology and Traditional Chinese Medicine, Ministry
of Educational of China, Key Laboratory of the Assembly and Application
of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha 410081, China
| | - Yutao Rao
- Key
Laboratory of Chemical Biology and Traditional Chinese Medicine, Ministry
of Educational of China, Key Laboratory of the Assembly and Application
of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha 410081, China
| | - Ling Xu
- Key
Laboratory of Chemical Biology and Traditional Chinese Medicine, Ministry
of Educational of China, Key Laboratory of the Assembly and Application
of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha 410081, China
| | - Mingbo Zhou
- Key
Laboratory of Chemical Biology and Traditional Chinese Medicine, Ministry
of Educational of China, Key Laboratory of the Assembly and Application
of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha 410081, China
| | - Ryo Kurosaki
- Division
of Materials Science, Nara Institute of
Science and Technology (NAIST) 8916-5 Takayama-cho, Ikoma 630-0192, Japan
| | - Naoki Aratani
- Division
of Materials Science, Nara Institute of
Science and Technology (NAIST) 8916-5 Takayama-cho, Ikoma 630-0192, Japan
| | - Atsuhiro Osuka
- Key
Laboratory of Chemical Biology and Traditional Chinese Medicine, Ministry
of Educational of China, Key Laboratory of the Assembly and Application
of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha 410081, China
| | - Jianxin Song
- Key
Laboratory of Chemical Biology and Traditional Chinese Medicine, Ministry
of Educational of China, Key Laboratory of the Assembly and Application
of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha 410081, China
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9
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Sugiarto S, Minato T, Sakiyama H, Sadakane M. Anion‐directed conformation switching and trigonal distortion in hexakis(methylamine)nickel(II) cations. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sugiarto Sugiarto
- Hiroshima University Applied Chemistry 1-4-1 Kagamiyama 7398527 Higashi-Hiroshima JAPAN
| | - Takuo Minato
- Hiroshima University: Hiroshima Daigaku Department of Applied Chemistry JAPAN
| | - Hiroshi Sakiyama
- Yamagata University: Yamagata Daigaku Department of Science, Faculty of Science JAPAN
| | - Masahiro Sadakane
- Hiroshima University: Hiroshima Daigaku Department of Applied Chemistry JAPAN
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10
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Electrochemical and Light-driven CO2 reduction by Amine-Functionalized rhenium Catalysts: A comparison between primary and tertiary amine substitutions. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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11
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Siewert I. Electrochemical CO 2 Reduction Catalyzed by Binuclear LRe 2(CO) 6Cl 2 and LMn 2(CO) 6Br 2 Complexes with an Internal Proton Source. Acc Chem Res 2022; 55:473-483. [PMID: 35077152 DOI: 10.1021/acs.accounts.1c00609] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of certain commodity chemicals, e.g., methanol and acetic acid, relies on CO, which is currently mainly produced by the combustion of carbon or natural gas. Photo- or electrochemical conversion of atmospheric CO2 to CO represents an attractive alternative strategy as this approach is carbon-neutral. Such photo- or electrochemically formed CO can also be used in the Fischer-Tropsch process forming liquid hydrocarbons for energy storage applications. The multiple electroreduction of CO2 is preferably coupled with proton transfer steps as this requires less energy than the single outer-sphere 1e- reduction of CO2.In 1984 and 2011, it was shown that [(Lbpy)Re(CO)3Cl] (1) and [(Lbpy)Mn(CO)3Br] (2), respectively, mediate the electrochemical 2e-/2H+ reduction of CO2 forming CO and water (Lbpy = 2,2'-bipyridine). Since proton management is crucial for catalysis, recently the impact of internal proton sources close to the axial position in such complexes has been investigated. However, binuclear complexes have been used rarely as mediators although it has been shown very early for 1 that electron management is also important: the 2e-/2H+ reduction pathway with 1 exhibits a higher reaction rate than going via the singly reduced species, though the pathway requires a higher overpotential. In this Account, we focus on recent developments of binuclear LMn2(CO)6 and LRe2(CO)6 mediators with an internal phenol group in the electroreduction of CO2. In contrast to mononuclear derivatives, for which the impact of the internal proton source on catalysis is very diverse, we always observed a higher reaction rate and for the Mn complexes also a lower overpotential with the binuclear complexes compared to the mononuclear variants. Spectroscopic, electrochemical, and computational studies on the mono- and binuclear complexes shed light on their reactivity under reductive conditions, elucidated the structure of reduced species, unraveled the kinetics for catalytically productive and unproductive (side) reactions, and allowed us to derive some hypothesis on the CO2 reduction mechanism. Finally, I emphasize that the electrohydrogenation of the polar double bonds by the binuclear complex LMn2(CO)6 with a central phenol unit is not restricted to CO2 but is also applicable to organic compounds with C═O bonds.
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Affiliation(s)
- Inke Siewert
- Universität Göttingen, Institut für Anorganische Chemie, Tammannstr. 4, 37077 Göttingen, Germany
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12
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Polyansky DE, Grills DC, Ertem MZ, Ngo KT, Fujita E. Role of Bimetallic Interactions in the Enhancement of Catalytic CO2 Reduction by a Macrocyclic Cobalt Catalyst. ACS Catal 2022. [DOI: 10.1021/acscatal.1c05043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dmitry E. Polyansky
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973-5000, United States
| | - David C. Grills
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973-5000, United States
| | - Mehmed Z. Ertem
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973-5000, United States
| | - Ken T. Ngo
- Department of Chemistry, University of Massachusetts, Boston, 100 Morrissey Boulevard, Boston, Massachusetts 02125, United States
| | - Etsuko Fujita
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973-5000, United States
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13
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Carr CR, Koenig JDB, Grant MJ, Piers WE, Welch GC. Boosting CO 2-to-CO evolution using a bimetallic diketopyrrolopyrrole tethered rhenium bipyridine catalyst. Catal Sci Technol 2022. [DOI: 10.1039/d2cy01453j] [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
The use of homogeneous electro- and photo-catalysis involving molecular catalysts offers valuable insight into reaction mechanisms as it relates to the structure–function of these tunable systems.
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Affiliation(s)
- Cody R. Carr
- University of Calgary, Department of Chemistry, 2500 University Drive N.W., Calgary, Alberta, T2N 1N4, Canada
| | - Josh D. B. Koenig
- University of Calgary, Department of Chemistry, 2500 University Drive N.W., Calgary, Alberta, T2N 1N4, Canada
| | - Michael J. Grant
- University of Calgary, Department of Chemistry, 2500 University Drive N.W., Calgary, Alberta, T2N 1N4, Canada
| | - Warren E. Piers
- University of Calgary, Department of Chemistry, 2500 University Drive N.W., Calgary, Alberta, T2N 1N4, Canada
| | - Gregory C. Welch
- University of Calgary, Department of Chemistry, 2500 University Drive N.W., Calgary, Alberta, T2N 1N4, Canada
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14
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Koenig JDB, Dubrawski ZS, Rao KR, Willkomm J, Gelfand BS, Risko C, Piers WE, Welch GC. Lowering Electrocatalytic CO 2 Reduction Overpotential Using N-Annulated Perylene Diimide Rhenium Bipyridine Dyads with Variable Tether Length. J Am Chem Soc 2021; 143:16849-16864. [PMID: 34597040 DOI: 10.1021/jacs.1c09481] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We report the design, synthesis, and characterization of four N-annulated perylene diimide (NPDI) functionalized rhenium bipyridine [Re(bpy)] supramolecular dyads. The Re(bpy) scaffold was connected to the NPDI chromophore either directly [Re(py-C0-NPDI)] or via an ethyl [Re(bpy-C2-NPDI)], butyl [Re(bpy-C4-NPDI)], or hexyl [Re(bpy-C6-NPDI)] alkyl-chain spacer. Upon electrochemical reduction in the presence of CO2 and a proton source, Re(bpy-C2/4/6-NPDI) all exhibited significant current enhancement effects, while Re(py-C0-NPDI) did not. During controlled potential electrolysis (CPE) experiments at Eappl = -1.8 V vs Fc+/0, Re(bpy-C2/4/6-NPDI) all achieved comparable activity (TONco ∼ 25) and Faradaic efficiency (FEco ∼ 94%). Under identical CPE conditions, the standard catalyst Re(dmbpy) was inactive for electrocatalytic CO2 reduction; only at Eappl = -2.1 V vs Fc+/0 could Re(dmbpy) achieve the same catalytic performance, representing a 300 mV lowering in overpotential for Re(bpy-C2/4/6-NPDI). At higher overpotentials, Re(bpy-C4/6-NPDI) both outperformed Re(bpy-C2-NPDI), indicating the possibility of coinciding electrocatalytic CO2 reduction mechanisms that are dictated by tether-length and overpotential. Using UV-vis-nearIR spectroelectrochemistry (SEC), FTIR SEC, and chemical reduction experiments, it was shown that the NPDI-moiety served as an electron-reservoir for Re(bpy), thereby allowing catalytic activity at lower overpotentials. Density functional theory studies probing the optimized geometries and frontier molecular orbitals of various catalytic intermediates revealed that the geometric configuration of NPDI relative to the Re(bpy)-moiety plays a critical role in accessing electrons from the electron-reservoir. The improved performance of Re(bpy-C2/4/6-NPDI)dyads at lower overpotentials, relative to Re(dmbpy), highlights the utility of chromophore electron-reservoirs as a method for lowering the overpotential for CO2 conversion.
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Affiliation(s)
- Josh D B Koenig
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta T2N 1N4, Canada
| | - Zachary S Dubrawski
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta T2N 1N4, Canada
| | - Keerthan R Rao
- Department of Chemistry & Center for Applied Energy Research, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Janina Willkomm
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta T2N 1N4, Canada
| | - Benjamin S Gelfand
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta T2N 1N4, Canada
| | - Chad Risko
- Department of Chemistry & Center for Applied Energy Research, University of Kentucky, Lexington, Kentucky 40506, United States
| | - Warren E Piers
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta T2N 1N4, Canada
| | - Gregory C Welch
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta T2N 1N4, Canada
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15
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Saund SS, Siegler MA, Thoi VS. Electrochemical Degradation of a Dicationic Rhenium Complex via Hoffman-Type Elimination. Inorg Chem 2021; 60:13011-13020. [PMID: 34492759 DOI: 10.1021/acs.inorgchem.1c01427] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Electrocatalytic reduction of carbon dioxide (CO2) by transition-metal catalysts is an attractive means for storing renewably sourced electricity in chemical bonds. Metal coordination compounds represent highly tunable platforms ideal for studying the fundamental stepwise transformations of CO2 into its reduced products. However, metal complexes can decompose upon extended electrolysis and form chemically distinct molecular species or, in some cases, catalytically active electrode deposits. Deciphering the degradative pathways is important for understanding the nature of the active catalyst and designing robust metal complexes for small-molecule activation. Herein, we present a new dicationic rhenium bipyridyl complex capable of multielectron ligand-centered reductions electrochemically. Our in-depth experimental and computational study provides mechanistic insight into an unusual reductively induced Hoffman-type elimination. We identify benzylic tertiary ammonium groups as an electrolytically susceptible moiety and propose key intermediates in the degradative pathway. This investigation highlights the complex interplay between the ligand and metal ion and will guide the future design of metal-organic catalysts.
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Affiliation(s)
- Simran S Saund
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Maxime A Siegler
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - V Sara Thoi
- Department of Chemistry, Johns Hopkins University, Baltimore, Maryland 21218, United States.,Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
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16
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Mukherjee A, Bhattacharya S, Chakravarty M. An unprecedented pyridine-based dinuclear mixed-valent Re I/VII oxo-bridged complex: a solvatochromic and AIE-active probe for nanomolar detection of picric acid and trinitrotoluene. Dalton Trans 2021; 50:9144-9157. [PMID: 34115088 DOI: 10.1039/d1dt01002f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This paper describes the synthesis of an unprecedented oxo-bridged rheniumI/VII (Re) complex by treating Re2(CO)10 with a pyridyl-linked anthracene-based twisted π-conjugated ligand. The molecular structures of both the ligand and the complex are determined by analyzing IR, NMR, and HR-MS spectra and unequivocally determined using single-crystal X-ray diffraction studies. Unlike previous observations, the complexation occurs uniquely to yield an unprecedented oxo-bridged ReI/VII complex. Such a complex is uncommon, and in most cases, Re(vii) appears as the ReO4- counter ion. The aggregation-induced emission (AIE) feature could have been achieved from this conformationally twisted ligand, but the emission of the ligand was quenched in the aggregated state. The complex exhibited solvatofluorochromic properties with a faint emission. The emission intensity significantly (∼6 times) increased in DMF after the addition of a water fraction of 90%, resulting in a bright orange emission. The AIE is mainly caused by restricted intramolecular rotation (RIR) and is supported by the polarity and viscosity effects. The nanoaggregate formation is captured by SEM, and DLS studies were used to determine the average particle size. After the complexation, the ligand becomes more rigid, and the RIR effect becomes prominent facilitating the AIE effect. The electron-rich aggregate's intense orange emission was used for the selective and sensitive detection of picric acid (PA) and 2,4,6-trinitrotoluene (TNT) at nanomolar levels amongst other nitroaromatics through emission quenching. The detailed mechanistic studies reveal the active role of dynamic quenching and complementary photo-induced electron transfer between the probe and TNT or PA. The easy electron transfer process from the electron-rich to the electron-poor system is confirmed by calculating the lowest unoccupied molecular orbital energy of the associated levels. The application is further extended for on-site PA and TNT detection by permeating the probe on a paper and detected at 10-3 M concentration with the naked eye. The PA/TNT detection efficiency is also confirmed by mixing PA or TNT with soil.
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Affiliation(s)
- Atasi Mukherjee
- Department of Chemistry, BITS-Pilani Hyderabad Campus, Hyderabad-500078, India.
| | | | - Manab Chakravarty
- Department of Chemistry, BITS-Pilani Hyderabad Campus, Hyderabad-500078, India.
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17
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18
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Quartapelle Procopio E, Boni A, Veronese L, Marcaccio M, Mercandelli P, Valenti G, Panigati M, Paolucci F. Dinuclear Re(I) Complexes as New Electrocatalytic Systems for CO
2
Reduction. ChemElectroChem 2021. [DOI: 10.1002/celc.202100486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
| | - Alessandro Boni
- Dipartimento di Chimica ‘‘ Giacomo Ciamician'' Alma Mater Studiorum Università di Bologna via F. Selmi 2 40126 Bologna Italy
| | - Lorenzo Veronese
- Dipartimento di Chimica Università degli Studi di Milano Via Golgi 19 20133 Milano Italy
| | - Massimo Marcaccio
- Dipartimento di Chimica ‘‘ Giacomo Ciamician'' Alma Mater Studiorum Università di Bologna via F. Selmi 2 40126 Bologna Italy
| | - Pierluigi Mercandelli
- Dipartimento di Chimica Università degli Studi di Milano Via Golgi 19 20133 Milano Italy
| | - Giovanni Valenti
- Dipartimento di Chimica ‘‘ Giacomo Ciamician'' Alma Mater Studiorum Università di Bologna via F. Selmi 2 40126 Bologna Italy
| | - Monica Panigati
- Dipartimento di Chimica Università degli Studi di Milano Via Golgi 19 20133 Milano Italy
- Consorzio INSTM via G. Giusti 9 50121 Firenze Italy
| | - Francesco Paolucci
- Dipartimento di Chimica ‘‘ Giacomo Ciamician'' Alma Mater Studiorum Università di Bologna via F. Selmi 2 40126 Bologna Italy
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19
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Kinzel NW, Werlé C, Leitner W. Transition Metal Complexes as Catalysts for the Electroconversion of CO 2 : An Organometallic Perspective. Angew Chem Int Ed Engl 2021; 60:11628-11686. [PMID: 33464678 PMCID: PMC8248444 DOI: 10.1002/anie.202006988] [Citation(s) in RCA: 111] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 08/11/2020] [Indexed: 12/17/2022]
Abstract
The electrocatalytic transformation of carbon dioxide has been a topic of interest in the field of CO2 utilization for a long time. Recently, the area has seen increasing dynamics as an alternative strategy to catalytic hydrogenation for CO2 reduction. While many studies focus on the direct electron transfer to the CO2 molecule at the electrode material, molecular transition metal complexes in solution offer the possibility to act as catalysts for the electron transfer. C1 compounds such as carbon monoxide, formate, and methanol are often targeted as the main products, but more elaborate transformations are also possible within the coordination sphere of the metal center. This perspective article will cover selected examples to illustrate and categorize the currently favored mechanisms for the electrochemically induced transformation of CO2 promoted by homogeneous transition metal complexes. The insights will be corroborated with the concepts and elementary steps of organometallic catalysis to derive potential strategies to broaden the molecular diversity of possible products.
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Affiliation(s)
- Niklas W. Kinzel
- Max Planck Institute for Chemical Energy ConversionStiftstr. 34–3645470Mülheim an der RuhrGermany
- Institut für Technische und Makromolekulare Chemie (ITMC)RWTH Aachen UniversityWorringer Weg 252074AachenGermany
| | - Christophe Werlé
- Max Planck Institute for Chemical Energy ConversionStiftstr. 34–3645470Mülheim an der RuhrGermany
- Ruhr University BochumUniversitätsstr. 15044801BochumGermany
| | - Walter Leitner
- Max Planck Institute for Chemical Energy ConversionStiftstr. 34–3645470Mülheim an der RuhrGermany
- Institut für Technische und Makromolekulare Chemie (ITMC)RWTH Aachen UniversityWorringer Weg 252074AachenGermany
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20
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Giereth R, Obermeier M, Forschner L, Karnahl M, Schwalbe M, Tschierlei S. Exploring the Full Potential of Photocatalytic Carbon Dioxide Reduction Using a Dinuclear Re
2
Cl
2
Complex Assisted by Various Photosensitizers. CHEMPHOTOCHEM 2021. [DOI: 10.1002/cptc.202100034] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Robin Giereth
- Institute of Inorganic Chemistry I Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
- Department of Energy Conversion Institute of Physical and Theoretical Chemistry Technische Universität Braunschweig Gaußstr. 17 38106 Braunschweig Germany
| | - Martin Obermeier
- Institute of Chemistry Humboldt-Universität zu Berlin Brook-Taylor-Str. 2 12489 Berlin Germany
| | - Lukas Forschner
- Institute of Inorganic Chemistry I Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Michael Karnahl
- Institute of Organic Chemistry University of Stuttgart Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Matthias Schwalbe
- Institute of Chemistry Humboldt-Universität zu Berlin Brook-Taylor-Str. 2 12489 Berlin Germany
| | - Stefanie Tschierlei
- Institute of Inorganic Chemistry I Ulm University Albert-Einstein-Allee 11 89081 Ulm Germany
- Department of Energy Conversion Institute of Physical and Theoretical Chemistry Technische Universität Braunschweig Gaußstr. 17 38106 Braunschweig Germany
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21
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Henke WC, Kerr TA, Sheridan TR, Henling LM, Takase MK, Day VW, Gray HB, Blakemore JD. Synthesis, structural studies, and redox chemistry of bimetallic [Mn(CO) 3] and [Re(CO) 3] complexes. Dalton Trans 2021; 50:2746-2756. [PMID: 33459317 PMCID: PMC7983307 DOI: 10.1039/d0dt03666h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Manganese ([Mn(CO)3]) and rhenium tricarbonyl ([Re(CO)3]) complexes represent a workhorse family of compounds with applications in a variety of fields. Here, the coordination, structural, and electrochemical properties of a family of mono- and bimetallic [Mn(CO)3] and [Re(CO)3] complexes are explored. In particular, a novel heterobimetallic complex featuring both [Mn(CO)3] and [Re(CO)3] units supported by 2,2'-bipyrimidine (bpm) has been synthesized, structurally characterized, and compared to the analogous monomeric and homobimetallic complexes. To enable a comprehensive structural analysis for the series of complexes, we have carried out new single crystal X-ray diffraction studies of seven compounds: Re(CO)3Cl(bpm), anti-[{Re(CO3)Cl}2(bpm)], Mn(CO)3Br(bpz) (bpz = 2,2'-bipyrazine), Mn(CO)3Br(bpm), syn- and anti-[{Mn(CO3)Br}2(bpm)], and syn-[Mn(CO3)Br(bpm)Re(CO)3Br]. Electrochemical studies reveal that the bimetallic complexes are reduced at much more positive potentials (ΔE≥ 380 mV) compared to their monometallic analogues. This redox behavior is consistent with introduction of the second tricarbonyl unit which inductively withdraws electron density from the bridging, redox-active bpm ligand, resulting in more positive reduction potentials. [Re(CO3)Cl]2(bpm) was reduced with cobaltocene; the electron paramagnetic resonance spectrum of the product exhibits an isotropic signal (near g = 2) characteristic of a ligand-centered bpm radical. Our findings highlight the facile synthesis as well as the structural characteristics and unique electrochemical behavior of this family of complexes.
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Affiliation(s)
- Wade C Henke
- Department of Chemistry, University of Kansas, 1567 Irving Hill Road, Lawrence, Kansas 66045, USA.
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22
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Stephanie R, Kim MW, Kim SH, Kim JK, Park CY, Park TJ. Recent advances of bimetallic nanomaterials and its nanocomposites for biosensing applications. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2020.116159] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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23
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Roy SS, Talukdar K, Jurss JW. Electro- and Photochemical Reduction of CO 2 by Molecular Manganese Catalysts: Exploring the Positional Effect of Second-Sphere Hydrogen-Bond Donors. CHEMSUSCHEM 2021; 14:662-670. [PMID: 33124150 DOI: 10.1002/cssc.202001940] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 10/20/2020] [Indexed: 06/11/2023]
Abstract
A series of molecular Mn catalysts featuring aniline groups in the second-coordination sphere has been developed for electrochemical and photochemical CO2 reduction. The arylamine moieties were installed at the 6 position of 2,2'-bipyridine (bpy) to generate a family of isomers in which the primary amine is located at the ortho- (1-Mn), meta- (2-Mn), or para-site (3-Mn) of the aniline ring. The proximity of the second-sphere functionality to the active site is a critical factor in determining catalytic performance. Catalyst 1-Mn, possessing the shortest distance between the amine and the active site, significantly outperformed the rest of the series and exhibited a 9-fold improvement in turnover frequency relative to parent catalyst Mn(bpy)(CO)3 Br (901 vs. 102 s-1 , respectively) at 150 mV lower overpotential. The electrocatalysts operated with high faradaic efficiencies (≥70 %) for CO evolution using trifluoroethanol as a proton source. Notably, under photocatalytic conditions, a concentration-dependent shift in product selectivity from CO (at high [catalyst]) to HCO2 H (at low [catalyst]) was observed with turnover numbers up to 4760 for formic acid and high selectivities for reduced carbon products.
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Affiliation(s)
- Sayontani Sinha Roy
- Department of Chemistry and Biochemistry, University of Mississippi University, Mississippi, 38677, USA
| | - Kallol Talukdar
- Department of Chemistry and Biochemistry, University of Mississippi University, Mississippi, 38677, USA
| | - Jonah W Jurss
- Department of Chemistry and Biochemistry, University of Mississippi University, Mississippi, 38677, USA
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24
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Kinzel NW, Werlé C, Leitner W. Übergangsmetallkomplexe als Katalysatoren für die elektrische Umwandlung von CO
2
– eine metallorganische Perspektive. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202006988] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Niklas W. Kinzel
- Max-Planck-Institut für Chemische Energiekonversion Stiftstraße 34–36 45470 Mülheim an der Ruhr Deutschland
- Institut für Technische und Makromolekulare Chemie (ITMC) RWTH Aachen University Worringer Weg 2 52074 Aachen Deutschland
| | - Christophe Werlé
- Max-Planck-Institut für Chemische Energiekonversion Stiftstraße 34–36 45470 Mülheim an der Ruhr Deutschland
- Ruhr-Universität Bochum Universitätsstraße 150 44801 Bochum Deutschland
| | - Walter Leitner
- Max-Planck-Institut für Chemische Energiekonversion Stiftstraße 34–36 45470 Mülheim an der Ruhr Deutschland
- Institut für Technische und Makromolekulare Chemie (ITMC) RWTH Aachen University Worringer Weg 2 52074 Aachen Deutschland
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25
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Giereth R, Lang P, McQueen E, Meißner X, Braun-Cula B, Marchfelder C, Obermeier M, Schwalbe M, Tschierlei S. Elucidation of Cooperativity in CO2 Reduction Using a Xanthene-Bridged Bimetallic Rhenium(I) Complex. ACS Catal 2020. [DOI: 10.1021/acscatal.0c04314] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Robin Giereth
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
- Department Energy Conversion, Institute of Physical and Theoretical Chemistry, TU Braunschweig, Gaußstr. 17, 38106 Braunschweig, Germany
| | - Philipp Lang
- Institute of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489 Berlin, Germany
| | - Ewan McQueen
- Institute of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489 Berlin, Germany
| | - Xenia Meißner
- Institute of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489 Berlin, Germany
| | - Beatrice Braun-Cula
- Institute of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489 Berlin, Germany
| | - Carla Marchfelder
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Martin Obermeier
- Institute of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489 Berlin, Germany
| | - Matthias Schwalbe
- Institute of Chemistry, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489 Berlin, Germany
| | - Stefanie Tschierlei
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
- Department Energy Conversion, Institute of Physical and Theoretical Chemistry, TU Braunschweig, Gaußstr. 17, 38106 Braunschweig, Germany
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26
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Zhang L, Li S, Liu H, Cheng YS, Wei XW, Chai X, Yuan G. Highly Efficient and Selective Visible-Light Driven CO 2 Reduction by Two Co-Based Catalysts in Aqueous Solution. Inorg Chem 2020; 59:17464-17472. [PMID: 33161705 DOI: 10.1021/acs.inorgchem.0c02733] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Photocatalytic CO2 reduction has been considered as a promising approach to solve energy and environmental problems. Nevertheless, developing inexpensive photocatalysts with high efficiency and selectivity remains a big challenge. In this study, two Co-based complexes [Co2(L1)Cl2] (1-Co) and [Co(L2)Cl] (2-Co) were synthesized by treating two DPA-based (DPA: dipicolylamine) ligands with Co2+, respectively. Under visible-light irradiation, the performance of 1-Co as a homogeneous photocatalyst for CO2 reduction in aqueous media has been explored by using [Ru(phen)3]2+ as a photosensitizer, and triethylolamine (TEOA) as a sacrificial reductant. 1-Co shows high photocatalytic activity for CO2-to-CO conversion, corresponding to the high TONCO of 2600 and TOFCO of 260 h-1 (TONCO = turnover number for CO; TOFCO = turnover frequency for CO). High selectivity of 97% for CO formation is also achieved. The control experiments catalyzed by 2-Co demonstrated that two Co(II) centers in 1-Co may operate independently and activate one CO2 molecule each. Furthermore, the proposed mechanism of 1-Co for photocatalytic CO2 reduction has been investigated via electrochemical analysis, a series of quenching experiments, and density functional theory calculations.
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Affiliation(s)
- Liyan Zhang
- School of Chemistry and Chemical Engineering, Institute of Materials Science and Engineering, Anhui University of Technology, Maanshan, 243032, People's Republic China
| | - Shiwei Li
- School of Chemistry and Chemical Engineering, Institute of Materials Science and Engineering, Anhui University of Technology, Maanshan, 243032, People's Republic China
| | - Huiping Liu
- School of Chemistry and Chemical Engineering, Institute of Materials Science and Engineering, Anhui University of Technology, Maanshan, 243032, People's Republic China
| | - Yuan-Sheng Cheng
- School of Chemistry and Chemical Engineering, Institute of Materials Science and Engineering, Anhui University of Technology, Maanshan, 243032, People's Republic China
| | - Xian-Wen Wei
- School of Chemistry and Chemical Engineering, Institute of Materials Science and Engineering, Anhui University of Technology, Maanshan, 243032, People's Republic China
| | - Xiaomin Chai
- School of Chemistry and Chemical Engineering, Institute of Materials Science and Engineering, Anhui University of Technology, Maanshan, 243032, People's Republic China
| | - Guozan Yuan
- School of Chemistry and Chemical Engineering, Institute of Materials Science and Engineering, Anhui University of Technology, Maanshan, 243032, People's Republic China
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27
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Talukdar K, Sinha Roy S, Amatya E, Sleeper EA, Le Magueres P, Jurss JW. Enhanced Electrochemical CO 2 Reduction by a Series of Molecular Rhenium Catalysts Decorated with Second-Sphere Hydrogen-Bond Donors. Inorg Chem 2020; 59:6087-6099. [PMID: 32309933 DOI: 10.1021/acs.inorgchem.0c00154] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A series of rhenium(I) fac-tricarbonyl complexes containing pendent arylamine functionality in the second coordination sphere have been developed and studied as electrocatalysts for carbon dioxide (CO2) reduction. Aniline moieties were appended at the 6 position of a 2,2'-bipyridine (bpy) donor in which the primary amine was positioned at the ortho- (1-Re), meta- (2-Re), and para- (3-Re) sites of the aniline substituent to generate a family of isomers. The relationship between the catalyst structure and activity was explored across the series, and the catalytic performance was compared to that of the benchmark catalyst Re(bpy)(CO)3Cl (ReBpy). Catalysts 1-Re, 2-Re, and 3-Re outperform the benchmark catalyst both in anhydrous acetonitrile and with added trifluoroethanol (TFE) as an external proton source. In the presence of TFE, the aniline-substituted catalysts convert CO2 to carbon monoxide (CO) with high Faradaic efficiencies (≥89%) and have superior turnover frequencies (TOFs) relative to ReBpy (72.9 s-1), with 2-Re having the highest TOF of the series at 239 s-1, a value that is twice that of the next most active catalyst. TOFs of 123 and 109 s-1 were observed for the ortho- and para-substituted aniline complexes (1-Re and 3-Re), respectively. Indeed, catalytic activities vary widely across the series, showing a high sensitivity to the position of the amine functionality relative to the rhenium active site. IR and UV-vis spectroelectrochemical experiments were conducted on the aniline-substituted systems, revealing important differences between the catalysts and mechanistic insight.
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Affiliation(s)
- Kallol Talukdar
- Department of Chemistry and Biochemistry, University of Mississippi, University, Mississippi 38677, United States
| | - Sayontani Sinha Roy
- Department of Chemistry and Biochemistry, University of Mississippi, University, Mississippi 38677, United States
| | - Eva Amatya
- Department of Chemistry and Biochemistry, University of Mississippi, University, Mississippi 38677, United States
| | - Elizabeth A Sleeper
- Department of Chemistry and Biochemistry, University of Mississippi, University, Mississippi 38677, United States
| | | | - Jonah W Jurss
- Department of Chemistry and Biochemistry, University of Mississippi, University, Mississippi 38677, United States
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28
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Nanographene−rhenium complex as efficient catalyst for electrochemical reduction: A computational study. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2019.110736] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Haiduc I. Review. Inverse coordination. Organic nitrogen heterocycles as coordination centers. A survey of molecular topologies and systematization. Part 2. Six-membered rings. J COORD CHEM 2019. [DOI: 10.1080/00958972.2019.1670349] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Ionel Haiduc
- Facultatea de Chimie, Universitatea Babeş-Bolyai, Cluj-Napoca, Romania
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Nichols AW, Machan CW. Secondary-Sphere Effects in Molecular Electrocatalytic CO 2 Reduction. Front Chem 2019; 7:397. [PMID: 31263689 PMCID: PMC6584898 DOI: 10.3389/fchem.2019.00397] [Citation(s) in RCA: 91] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 05/17/2019] [Indexed: 12/12/2022] Open
Abstract
The generation of fuels and value-added chemicals from carbon dioxide (CO2) using electrocatalysis is a promising approach to the eventual large-scale utilization of intermittent renewable energy sources. To mediate kinetically and thermodynamically challenging transformations of CO2, early reports of molecular catalysts focused primarily on precious metal centers. However, through careful ligand design, earth-abundant first-row transition metals have also demonstrated activity and selectivity for electrocatalytic CO2 reduction. A particularly effective and promising approach for enhancement of reaction rates and efficiencies of molecular electrocatalysts for CO2 reduction is the modulation of the secondary coordination sphere of the active site. In practice, this has been achieved through the mimicry of enzyme structures: incorporating pendent Brønsted acid/base sites, charged residues, sterically hindered environments, and bimetallic active sites have all proved to be valid strategies for iterative optimization. Herein, the development of secondary-sphere strategies to facilitate rapid and selective CO2 reduction is reviewed with an in-depth examination of the classic [Fe(tetraphenylporphyrin)]+, [Ni(cyclam)]2+, Mn(bpy)(CO)3X, and Re(bpy)(CO)3X (X = solvent or halide) systems, including relevant highlights from other recently developed ligand platforms.
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Affiliation(s)
| | - Charles W. Machan
- Department of Chemistry, University of Virginia, Charlottesville, VA, United States
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Talukdar K, Issa A, Jurss JW. Synthesis of a Redox-Active NNP-Type Pincer Ligand and Its Application to Electrocatalytic CO 2 Reduction With First-Row Transition Metal Complexes. Front Chem 2019; 7:330. [PMID: 31165057 PMCID: PMC6536570 DOI: 10.3389/fchem.2019.00330] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 04/24/2019] [Indexed: 11/13/2022] Open
Abstract
We report the synthesis of a rigid phosphine-substituted, redox-active pincer ligand and its application to electrocatalytic CO2 reduction with first-row transition metal complexes. The tridentate ligand was prepared by Stille coupling of 2,8-dibromoquinoline and 2-(tributylstannyl)pyridine, followed by a palladium-catalyzed cross-coupling with HPPh2. Complexes were synthesized from a variety of metal precursors and characterized by NMR, high-resolution mass spectrometry, elemental analysis, and cyclic voltammetry. Formation of bis-chelated metal complexes, rather than mono-chelated complexes, was favored in all synthetic conditions explored. The complexes were assessed for their ability to mediate electrocatalytic CO2 reduction, where the cobalt complex was found to have the best activity for CO2-to-CO conversion in the presence of water as an added proton source.
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Affiliation(s)
- Kallol Talukdar
- Department of Chemistry and Biochemistry, University of Mississippi, University, MS, United States
| | - Asala Issa
- Department of Chemistry and Biochemistry, University of Mississippi, University, MS, United States
| | - Jonah W Jurss
- Department of Chemistry and Biochemistry, University of Mississippi, University, MS, United States
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Barlow J, Yang JY. Thermodynamic Considerations for Optimizing Selective CO 2 Reduction by Molecular Catalysts. ACS CENTRAL SCIENCE 2019; 5:580-588. [PMID: 31041377 PMCID: PMC6487447 DOI: 10.1021/acscentsci.9b00095] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Indexed: 05/17/2023]
Abstract
Energetically efficient electrocatalysts with high product selectivity are desirable targets for sustainable chemical fuel generation using renewable electricity. Recycling CO2 by reduction to more energy dense products would support a carbon-neutral cycle that mitigates the intermittency of renewable energy sources. Conversion of CO2 to more saturated products typically requires proton equivalents. Complications with product selectivity stem from competitive reactions between H+ or CO2 at shared intermediates. We describe generalized catalytic cycles for H2, CO, and HCO2 - formation that are commonly proposed in inorganic molecular catalysts. Thermodynamic considerations and trends for the reactions of H+ or CO2 at key intermediates are outlined. A quantitative understanding of intermediate catalytic steps is key to designing systems that display high selectivity while promoting energetically efficient catalysis by minimizing the overall energy landscape. For CO2 reduction to CO, we describe how an enzymatic active site motif facilitates efficient and selective catalysis and highlight relevant examples from synthetic systems.
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Liyanage NP, Yang W, Guertin S, Sinha Roy S, Carpenter CA, Adams RE, Schmehl RH, Delcamp JH, Jurss JW. Photochemical CO2 reduction with mononuclear and dinuclear rhenium catalysts bearing a pendant anthracene chromophore. Chem Commun (Camb) 2019; 55:993-996. [DOI: 10.1039/c8cc09155b] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Well-defined dinuclear rhenium photocatalysts featuring an anthracene chromophore are significantly faster and more durable than their mononuclear counterparts.
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Affiliation(s)
| | - Weiwei Yang
- Department of Chemistry and Biochemistry
- University of Mississippi
- USA
| | | | | | | | | | | | - Jared H. Delcamp
- Department of Chemistry and Biochemistry
- University of Mississippi
- USA
| | - Jonah W. Jurss
- Department of Chemistry and Biochemistry
- University of Mississippi
- USA
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Lang P, Giereth R, Tschierlei S, Schwalbe M. Unexpected wavelength dependency of the photocatalytic CO2 reduction performance of the well-known (bpy)Re(CO)3Cl complex. Chem Commun (Camb) 2019; 55:600-603. [DOI: 10.1039/c8cc08742c] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The photocatalytic activity of bpyRe(CO)3Cl is highest when wavelengths larger than 450 nm are used – even if the compound hardly absorbs in this region. Mechanistic investigations suggest the wavelength-dependent involvement of different intermediates and reaction pathways.
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Affiliation(s)
- Philipp Lang
- Humoldt Universität zu Berlin
- Institute of Chemistry
- 12489 Berlin
- Germany
| | - Robin Giereth
- Ulm University
- Institute of Inorganic Chemistry I
- 89081 Ulm
- Germany
| | | | - Matthias Schwalbe
- Humoldt Universität zu Berlin
- Institute of Chemistry
- 12489 Berlin
- Germany
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Chen L, Dulaney HA, Wilkins BO, Farmer S, Zhang Y, Fronczek FR, Jurss JW. High-spin enforcement in first-row metal complexes of a constrained polyaromatic ligand: synthesis, structure, and properties. NEW J CHEM 2018. [DOI: 10.1039/c8nj02072h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The coordination chemistry of a rigid tetradentate polypyridyl ligand has been developed with first-row transition metals Mn(ii), Fe(ii), Co(ii), Ni(ii), and Zn(ii).
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Affiliation(s)
- Lizhu Chen
- Department of Chemistry and Biochemistry
- University of Mississippi
- University
- USA
| | - Hunter A. Dulaney
- Department of Chemistry and Biochemistry
- University of Mississippi
- University
- USA
| | | | - Sarah Farmer
- Department of Chemistry and Biochemistry
- University of Mississippi
- University
- USA
| | - Yanbing Zhang
- Department of Chemistry and Biochemistry
- University of Mississippi
- University
- USA
| | | | - Jonah W. Jurss
- Department of Chemistry and Biochemistry
- University of Mississippi
- University
- USA
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