1
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Wee-Léonard MV, Elias B, Troian-Gautier L. Photoinduced One-Electron Chloride Oxidation in Water Using a Pentacationic Ir(III) Photosensitizer. J Am Chem Soc 2024. [PMID: 38621164 DOI: 10.1021/jacs.4c00478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
A novel iridium(III) photosensitizer containing pyridinium-decorated terpyridines has been used for the photo-oxidation of chloride in water. Despite its abundance, the very positive one-electron reduction potential (E° Cl•/- = 2.1-2.4 V vs NHE) restricted its use in energy conversion schemes and artificial photosynthesis. The kinetics of the photoinduced electron transfer process were investigated through Stern-Volmer quenching experiments and nanosecond transient absorption spectroscopy, which provided unambiguous evidence that photoinduced chloride oxidation occurred with a quenching rate constant kq = 5.0 × 1010 M-1 s-1. Complementary spectroelectrochemistry and photolysis experiments confirmed the formation of the reduced photosensitizer and showcased the redox and photostability of the Ir(III) photosensitizer that holds great promise for the HX splitting approach.
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Affiliation(s)
- Milan Vander Wee-Léonard
- UCLouvain, Institute of Condensed Matter and Nanosciences (IMCN), Molecular Chemistry, Materials and Catalysis (MOST), Place Louis Pasteur 1/L4.01.02, 1348 Louvain-la-Neuve, Belgium
| | - Benjamin Elias
- UCLouvain, Institute of Condensed Matter and Nanosciences (IMCN), Molecular Chemistry, Materials and Catalysis (MOST), Place Louis Pasteur 1/L4.01.02, 1348 Louvain-la-Neuve, Belgium
| | - Ludovic Troian-Gautier
- UCLouvain, Institute of Condensed Matter and Nanosciences (IMCN), Molecular Chemistry, Materials and Catalysis (MOST), Place Louis Pasteur 1/L4.01.02, 1348 Louvain-la-Neuve, Belgium
- Wel Research Institute, Avenue Pasteur 6, 1300 Wavre, Belgium
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2
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Kessler BJO, Mansoor IF, Wozniak DI, Emge TJ, Lipke MC. Controlling Intramolecular and Intermolecular Electronic Coupling of Radical Ligands in a Series of Cobaltoviologen Complexes. J Am Chem Soc 2023; 145:15924-15935. [PMID: 37460450 DOI: 10.1021/jacs.3c03725] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
Abstract
Controlling electronic coupling between multiple redox sites is of interest for tuning the electronic properties of molecules and materials. While classic mixed-valence (MV) systems are highly tunable, e.g., via the organic bridges connecting the redox sites, metal-bridged MV systems are difficult to control because the electronics of the metal cannot usually be altered independently of redox-active moieties embedded in its ligands. Herein, this limitation was overcome by varying the donor strengths of ancillary ligands in a series of cobalt complexes without directly perturbing the electronics of viologen-like redox sites bridged by the cobalt ions. The cobaltoviologens [1X-Co]n+ feature four 4-X-pyridyl donor groups (X = CO2Me, Cl, H, Me, OMe, NMe2) that provide gradual electronic tuning of the bridging CoII centers, while a related complex [2-Co]n+ with NHC donors supports exclusively CoIII states even upon reduction of the viologen units. Electrochemistry and IVCT band analysis indicate that the MV states of these complexes have electronic structures ranging from fully localized ([2-Co]4+; Robin-Day Class I) to fully delocalized ([1CO2Me-Co]3+; Class III) descriptions, demonstrating unprecedented control over electronic coupling without changing the identity of the redox sites or bridging metal. Additionally, single-crystal XRD characterization of the homovalent complexes [1H-Co]2+ and [1H-Zn]2+ revealed radical-pairing interactions between the viologen ligands of adjacent complexes, representing a type of through-space electronic coupling commonly observed for organic viologen radicals but never before seen in metalloviologens. The extended solid-state packing of these complexes produces 3D networks of radical π-stacking interactions that impart unexpected mechanical flexibility to these crystals.
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Affiliation(s)
- Brice J O Kessler
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 123 Bevier Road, Piscataway, New Jersey 08854, United States
| | - Iram F Mansoor
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 123 Bevier Road, Piscataway, New Jersey 08854, United States
| | - Derek I Wozniak
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 123 Bevier Road, Piscataway, New Jersey 08854, United States
| | - Thomas J Emge
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 123 Bevier Road, Piscataway, New Jersey 08854, United States
| | - Mark C Lipke
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 123 Bevier Road, Piscataway, New Jersey 08854, United States
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3
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Nie W, Tarnopol DE, McCrory CCL. Enhancing a Molecular Electrocatalyst’s Activity for CO2 Reduction by Simultaneously Modulating Three Substituent Effects. J Am Chem Soc 2021; 143:3764-3778. [DOI: 10.1021/jacs.0c09357] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Weixuan Nie
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
| | - Drew E. Tarnopol
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
| | - Charles C. L. McCrory
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
- Macromolecular Science and Engineering Program, University of Michigan, Ann Arbor, Michigan 48109-1055, United States
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4
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Lin S, Turro C. Dirhodium Complexes as Panchromatic Sensitizers, Electrocatalysts, and Photocatalysts. Chemistry 2021; 27:5379-5387. [DOI: 10.1002/chem.202003950] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 10/09/2020] [Indexed: 11/09/2022]
Affiliation(s)
- Shaoyang Lin
- Department of Chemistry and Biochemistry The Ohio State University 100 W. 18th Ave. Columbus OH 43210 USA
| | - Claudia Turro
- Department of Chemistry and Biochemistry The Ohio State University 100 W. 18th Ave. Columbus OH 43210 USA
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5
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Rabbani R, Saeedi S, Nazimuddin M, Barbero H, Kyritsakas N, White TA, Masson E. Enhanced photoreduction of water catalyzed by a cucurbit[8]uril-secured platinum dimer. Chem Sci 2021; 12:15347-15352. [PMID: 34976355 PMCID: PMC8635170 DOI: 10.1039/d1sc03743a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 11/04/2021] [Indexed: 12/11/2022] Open
Abstract
A cucurbit[8]uril (CB[8])-secured platinum terpyridyl chloride dimer was used as a photosensitizer and hydrogen-evolving catalyst for the photoreduction of water. Volumes of produced hydrogen were up to 25 and 6 times larger than those obtained with the corresponding free and cucurbit[7]uril-bound platinum monomer, respectively, at equal Pt concentration. The thermodynamics of the proton-coupled electron transfer from the Pt(ii)–Pt(ii) dimer to the corresponding Pt(ii)–Pt(iii)–H hydride key intermediate, as quantified by density functional theory, suggest that CB[8] secures the Pt(ii)–Pt(ii) dimer in a particularly reactive conformation that promotes hydrogen formation. The cucurbit[8]uril macrocycle can secure a platinum terpyridyl complex into a particularly reactive dimer that catalyzes the photoreduction of water.![]()
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Affiliation(s)
- Ramin Rabbani
- Department of Chemistry and Biochemistry, Ohio University, Athens, Ohio 45701, USA
| | - Sima Saeedi
- Department of Chemistry and Biochemistry, Ohio University, Athens, Ohio 45701, USA
| | - Md Nazimuddin
- Department of Chemistry and Biochemistry, Ohio University, Athens, Ohio 45701, USA
| | - Héctor Barbero
- Department of Chemistry and Biochemistry, Ohio University, Athens, Ohio 45701, USA
- GIR MIOMeT, IU CINQUIMA/Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid, Valladolid, E47011, Spain
| | - Nathalie Kyritsakas
- Molecular Tectonics Laboratory, University of Strasbourg, UMR UDS-CNRS 7140, Institut le Bel, F-67000 Strasbourg, France
| | - Travis A. White
- Department of Chemistry and Biochemistry, Ohio University, Athens, Ohio 45701, USA
| | - Eric Masson
- Department of Chemistry and Biochemistry, Ohio University, Athens, Ohio 45701, USA
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6
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Mansoor IF, Wozniak DI, Wu Y, Lipke MC. A delocalized cobaltoviologen with seven reversibly accessible redox states and highly tunable electrochromic behaviour. Chem Commun (Camb) 2020; 56:13864-13867. [PMID: 33089836 DOI: 10.1039/d0cc05627h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
CoII mediates electronic coupling between two N-Me-pyridinium-terpyridine ligands that are related to redox-active N,N-dialkyl-4,4'-bipyridinium dications (viologens). Borderline Class II/III electronic delocalization imparts the cobaltoviologen complex with distinct electronic properties (e.g., 7 accessible redox states) relative to those of viologens, leading to enhanced electrochromism.
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Affiliation(s)
- Iram F Mansoor
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 123 Bevier Road, Piscataway, New Jersey 08854, USA.
| | - Derek I Wozniak
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 123 Bevier Road, Piscataway, New Jersey 08854, USA.
| | - Yilei Wu
- Department of Chemical Engineering, Stanford University, Stanford, California 94305-4125, USA
| | - Mark C Lipke
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 123 Bevier Road, Piscataway, New Jersey 08854, USA.
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7
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Winter A, Schubert US. Metal‐Terpyridine Complexes in Catalytic Application – A Spotlight on the Last Decade. ChemCatChem 2020. [DOI: 10.1002/cctc.201902290] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Andreas Winter
- Laboratory of Organic and Macromolecular Chemistry (IOMC)Friedrich Schiller University Jena Humboldtstr. 10 07743 Jena Germany
- Center for Energy and Environmental Chemistry Jena (CEEC Jena) Philosophenweg 7a 07743 Jena Germany
| | - Ulrich S. Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC)Friedrich Schiller University Jena Humboldtstr. 10 07743 Jena Germany
- Center for Energy and Environmental Chemistry Jena (CEEC Jena) Philosophenweg 7a 07743 Jena Germany
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8
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Zhang X, Cibian M, Call A, Yamauchi K, Sakai K. Photochemical CO2 Reduction Driven by Water-Soluble Copper(I) Photosensitizer with the Catalysis Accelerated by Multi-Electron Chargeable Cobalt Porphyrin. ACS Catal 2019. [DOI: 10.1021/acscatal.9b04023] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Xian Zhang
- Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Mihaela Cibian
- Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
- Département de Chimie, Biochimie et Physique, Université du Québec à Trois-Rivières, Québec, Canada
| | - Arnau Call
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kosei Yamauchi
- Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Ken Sakai
- Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
- Center of Molecular Systems (CMS), Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
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9
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Torres J, Carrión MC, Leal J, Castañeda G, Manzano BR, Jalón FA. Homoleptic ruthenium complexes with N-heterocyclic carbene ligands as photosensitizers in the photocatalytic generation of H2 from water. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.120880] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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10
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Yamamoto K, Call A, Sakai K. Photocatalytic H2Evolution Using a Ru Chromophore Tethered to Six Viologen Acceptors. Chemistry 2018; 24:16620-16629. [DOI: 10.1002/chem.201803662] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Indexed: 12/29/2022]
Affiliation(s)
- Keiya Yamamoto
- Department of Chemistry; Faculty of Science; Kyushu University; Motooka 744, Nishi-ku Fukuoka 819-0395 Japan
- International Institute for Carbon-Neutral Energy Research; (WPI-I CNER); Kyushu University; Motooka 744, Nishi-ku Fukuoka 819-0395 Japan
| | - Arnau Call
- International Institute for Carbon-Neutral Energy Research; (WPI-I CNER); Kyushu University; Motooka 744, Nishi-ku Fukuoka 819-0395 Japan
| | - Ken Sakai
- Department of Chemistry; Faculty of Science; Kyushu University; Motooka 744, Nishi-ku Fukuoka 819-0395 Japan
- International Institute for Carbon-Neutral Energy Research; (WPI-I CNER); Kyushu University; Motooka 744, Nishi-ku Fukuoka 819-0395 Japan
- Center for Molecular Systems (CMS); Kyushu University; Motooka 744, Nishi-ku Fukuoka 819-0395 Japan
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11
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Immobilization of luminescent Platinum(II) complexes on periodic mesoporous organosilica and their water reduction photocatalysis. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2017.09.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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12
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Synthesis, characterisation, nuclease and cytotoxic activity of phosphate-free and phosphate-containing copper $$4^{\prime }$$ 4 ′ -(N-methylpyridinium)- $$2{,}2^{\prime }{:}6^{\prime }{,}2^{\prime \prime }$$ 2 , 2 ′ : 6 ′ , 2 ″ terpyridine complexes. J CHEM SCI 2018. [DOI: 10.1007/s12039-018-1422-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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13
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Jacques A, Auvray T, Bevernaegie R, Loiseau F, Cibian M, Hanan GS, Kirsch-De Mesmaeker A, Elias B. Proton sensitive charge-transfer excited states in bis-terdentate cyclometalated Ir(III) complexes: Spectroscopic and theoretical investigation. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.10.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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14
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Affiliation(s)
- Dong Ryeol Whang
- Institute of Physical Chemistry; Johannes Kepler University Linz; Altenbergerstraße 69 4040 Linz Austria
| | - Dogukan Hazar Apaydin
- Institute of Physical Chemistry; Johannes Kepler University Linz; Altenbergerstraße 69 4040 Linz Austria
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15
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Kamatsuka T, Shinokubo H, Miyake Y. Design and Synthesis of Tunable Ligands with 4,4′-Bipyridyl as an Electron-Accepting Unit and Their Rhenium Complexes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00611] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Takuto Kamatsuka
- Department of Molecular and
Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Hiroshi Shinokubo
- Department of Molecular and
Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Yoshihiro Miyake
- Department of Molecular and
Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
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16
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Miyaji M, Kitamoto K, Ozawa H, Sakai K. Synthesis and Characterization of a RuPt-Based Photo-Hydrogen-Evolving Molecular Device Tethered to a Single Viologen Acceptor. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201601346] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Masayuki Miyaji
- Department of Chemistry; Faculty of Science; Kyushu University; Motooka 744, Nishi-ku 819-0395 Fukuoka Japan
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER); Kyushu University; Motooka 744, Nishi-ku 819-0395 Fukuoka Japan
| | - Kyoji Kitamoto
- Department of Chemistry; Faculty of Science; Kyushu University; Motooka 744, Nishi-ku 819-0395 Fukuoka Japan
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER); Kyushu University; Motooka 744, Nishi-ku 819-0395 Fukuoka Japan
| | - Hironobu Ozawa
- Education Center for Global Leaders in Molecular Systems for Devices; Kyushu University; Motooka 744, Nishi-ku 819-0395 Fukuoka Japan
| | - Ken Sakai
- Department of Chemistry; Faculty of Science; Kyushu University; Motooka 744, Nishi-ku 819-0395 Fukuoka Japan
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER); Kyushu University; Motooka 744, Nishi-ku 819-0395 Fukuoka Japan
- Center for Molecular Systems (CMS); Kyushu University; Motooka 744, Nishi-ku 819-0395 Fukuoka Japan
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17
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Kitamoto K, Sakai K. Tris(2,2′-bipyridine)ruthenium Derivatives with Multiple Viologen Acceptors: Quadratic Dependence of Photocatalytic H2Evolution Rate on the Local Concentration of the Acceptor Site. Chemistry 2016; 22:12381-90. [DOI: 10.1002/chem.201601554] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Kyoji Kitamoto
- Department of Chemistry; Faculty of Science; Kyushu University; Motooka 744, Nishi-ku Fukuoka 819-0395 Japan
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER); Kyushu University; Motooka 744, Nishi-ku Fukuoka 819-0395 Japan
| | - Ken Sakai
- Department of Chemistry; Faculty of Science; Kyushu University; Motooka 744, Nishi-ku Fukuoka 819-0395 Japan
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER); Kyushu University; Motooka 744, Nishi-ku Fukuoka 819-0395 Japan
- Center for Molecular Systems (CMS); Kyushu University; Motooka 744, Nishi-ku Fukuoka 819-0395 Japan
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18
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Kitamoto K, Sakai K. Photochemical H2 evolution from water catalyzed by a dichloro(diphenylbipyridine)platinum(ii) derivative tethered to multiple viologen acceptors. Chem Commun (Camb) 2016; 52:1385-8. [DOI: 10.1039/c5cc08044d] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Enhanced hydrogen evolution from water photocatalyzed by a dichloro(diphenylbipyridine)platinum(ii) derivative tethered to multiple viologen acceptors is reported.
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Affiliation(s)
- Kyoji Kitamoto
- Department of Chemsitry
- Faculty of Science
- Kyushu University
- Nishi-ku
- Japan
| | - Ken Sakai
- Department of Chemsitry
- Faculty of Science
- Kyushu University
- Nishi-ku
- Japan
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19
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Lin S, Kitamoto K, Ozawa H, Sakai K. Improved photocatalytic hydrogen evolution driven by chloro(terpyridine)platinum(ii) derivatives tethered to a single pendant viologen acceptor. Dalton Trans 2016; 45:10643-54. [DOI: 10.1039/c6dt01456a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chloro(terpyridine)platinum(ii) derivatives tethered to a single pendant viologen acceptor exhibit drastically improved turnover number in the photocatalytic H2 evolution reaction from water.
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Affiliation(s)
- Shu Lin
- Department of Chemistry
- Faculty of Science
- Kyushu University
- Nishi-ku
- Japan
| | - Kyoji Kitamoto
- Department of Chemistry
- Faculty of Science
- Kyushu University
- Nishi-ku
- Japan
| | - Hironobu Ozawa
- Education Center for Global Leaders in Molecular Systems for Devices
- Kyushu University
- Nishi-ku
- Japan
| | - Ken Sakai
- Department of Chemistry
- Faculty of Science
- Kyushu University
- Nishi-ku
- Japan
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20
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Whang DR, Park SY. Rational Design of an Electron-Reservoir Pt(II) Complex for Efficient Photocatalytic Hydrogen Production from Water. CHEMSUSCHEM 2015; 8:3204-7. [PMID: 26315804 DOI: 10.1002/cssc.201500787] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Revised: 07/23/2015] [Indexed: 05/15/2023]
Abstract
Herein we report a Pt(II) complex containing a 4,4'-bis[4-(triphenylsilyl)phenyl]-2,2'-bipyridine ligand as a molecular catalyst for water splitting. Systematic studies of the electrochemical and electronic properties of this catalyst, in comparison with two control complexes, reveal electron-reservoir characteristics upon two-electron reduction. A turnover number of 510,000 was recorded by employing this complex as a water reduction catalyst in combination with a state-of-the-art photosensitizer and N,N-dimethylaniline as a sacrificial electron donor, which represents a large improvement over the control complexes that do not contain the tetraphenylsilyl ligand substitution.
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Affiliation(s)
- Dong Ryeol Whang
- Center for Supramolecular Optoelectronic Materials, Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 151-744, Korea
| | - Soo Young Park
- Center for Supramolecular Optoelectronic Materials, Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 151-744, Korea.
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21
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Yamauchi K, Sakai K. A tricarboxylated PtCl(terpyridine) derivative exhibiting pH-dependent photocatalytic activity for H2 evolution from water. Dalton Trans 2015; 44:8685-96. [DOI: 10.1039/c5dt00425j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A ‘negatively charged’ PtCl(terpyridine) derivative was found to be the first example of a Pt(ii)-based molecular photocatalyst capable of driving H2 evolution coupled with a PCET process at the ligand geometry.
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Affiliation(s)
- Kosei Yamauchi
- Department of Chemistry
- Faculty of Sciences
- Kyushu University
- Fukuoka 812-8581
- Japan
| | - Ken Sakai
- Department of Chemistry
- Faculty of Sciences
- Kyushu University
- Fukuoka 812-8581
- Japan
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22
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Miyake Y, Nakajima K, Higuchi Y, Nishibayashi Y. Synthesis and Redox Properties of PNP Pincer Complexes Based onN-Methyl-4,4′-bipyridinium. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402349] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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23
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Kitamoto K, Sakai K. Pigment-Acceptor-Catalyst Triads for Photochemical Hydrogen Evolution. Angew Chem Int Ed Engl 2014; 53:4618-22. [DOI: 10.1002/anie.201311209] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2013] [Indexed: 11/07/2022]
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24
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Kitamoto K, Sakai K. Pigment-Acceptor-Catalyst Triads for Photochemical Hydrogen Evolution. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201311209] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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25
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Martis M, Mori K, Kato K, Sankar G, Yamashita H. What Are the Active Species in the Photoinduced H2Production with Terpyridyl Pt(II) Complexes? An Investigation by in Situ XAFS. Chemphyschem 2013; 14:1122-5. [DOI: 10.1002/cphc.201201093] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Indexed: 11/10/2022]
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Kobayashi M, Masaoka S, Sakai K. Photoinduced Hydrogen Evolution from Water by a Simple Platinum(II) Terpyridine Derivative: A Z-Scheme Photosynthesis. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201202720] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Kobayashi M, Masaoka S, Sakai K. Photoinduced Hydrogen Evolution from Water by a Simple Platinum(II) Terpyridine Derivative: A Z-Scheme Photosynthesis. Angew Chem Int Ed Engl 2012; 51:7431-4. [DOI: 10.1002/anie.201202720] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2012] [Indexed: 11/07/2022]
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