1
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Gupta AK, Gupta R, Potter HC, Cordes DB, Slawin AMZ, Samuel IDW, Zysman-Colman E, Pal AK. A Mononuclear [PtCl(tpy)]PF 6 Complex for a Yellow Emitting Solution-Processable Organic Light Emitting Diode. Inorg Chem 2024; 63:14811-14815. [PMID: 39088793 DOI: 10.1021/acs.inorgchem.4c02486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/03/2024]
Abstract
We report square planar mononuclear Pt(II)-complexes of terpyridines in the form of [PtCl(L1/L2)]PF6 as phosphorescent emitters (where L1 = 4-(3-pyridine)2,2':6',2''-terpyridine and L2 = 4'-(3-pyridinyl)-4,4''-di(tert-butyl)-2,2':6'2''-terpyridine). Complex 2 showed emission at 534 nm in the DCM solution with photoluminescence quantum efficiency (ΦPL) = 14%, while in the mCBP host (5-wt % doped), the emission shifted to 584 nm with ΦPL = 37.8% and a phosphorescence lifetime (τphos) of 37.8 μs. Complex 2 in mCBP was used to fabricate a solution-processed phosphorescent organic light-emitting diode (PhOLED) which showed maximum external quantum efficiency (EQEmax) = 7.4% with yellow emission at λEL = 570 nm and exhibited a low efficiency roll-off with an EQE drop to 7.0% at 1000 cd/m2.
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Affiliation(s)
- Abhishek Kumar Gupta
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St. Andrews, St. Andrews KY16 9ST, U.K
- Organic Semiconductor Centre, School of Physics and Astronomy, University of St. Andrews, North Haugh, St. Andrews KY16 9SS, U.K
| | - Rahat Gupta
- Department of Chemistry, Indian Institute of Technology Jammu, Nagrota Bypass Road, Jammu, Jammu and Kashmir - 181221, India
| | - Hannah C Potter
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St. Andrews, St. Andrews KY16 9ST, U.K
| | - David B Cordes
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St. Andrews, St. Andrews KY16 9ST, U.K
| | - Alexandra M Z Slawin
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St. Andrews, St. Andrews KY16 9ST, U.K
| | - Ifor D W Samuel
- Organic Semiconductor Centre, School of Physics and Astronomy, University of St. Andrews, North Haugh, St. Andrews KY16 9SS, U.K
| | - Eli Zysman-Colman
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St. Andrews, St. Andrews KY16 9ST, U.K
| | - Amlan K Pal
- Department of Chemistry, Indian Institute of Technology Jammu, Nagrota Bypass Road, Jammu, Jammu and Kashmir - 181221, India
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2
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Gupta R, Schott O, Saha A, Shriya, Hanan GS, Pal AK. Pt(II)-bis(quinolinyl) complexes for photocatalytic hydrogen production. Chem Commun (Camb) 2024; 60:2022-2025. [PMID: 38112657 DOI: 10.1039/d3cc04332k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
Three Pt(II)-bis(quinolinyl) complexes with varying electron densities were synthesized, structurally characterized and used for photocatalytic hydrogen production under different conditions. All the complexes were found to be active for hydrogen production giving a maximum turnover number (TON) of 1230 surpassing the conventionally used Pt-terpyridyl complexes.
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Affiliation(s)
- Rahat Gupta
- Department of Chemistry, Indian Institute of Technology Jammu, Nagrota Bypass Road, Jammu and Kashmir - 181221, India.
| | - Olivier Schott
- Département de Chimie, Université de Montréal, Montréal, Québec H3C 3J7, Canada
| | - Arindam Saha
- Département de Chimie, Université de Montréal, Montréal, Québec H3C 3J7, Canada
| | - Shriya
- Department of Chemistry, Indian Institute of Technology Jammu, Nagrota Bypass Road, Jammu and Kashmir - 181221, India.
| | - Garry S Hanan
- Département de Chimie, Université de Montréal, Montréal, Québec H3C 3J7, Canada
| | - Amlan K Pal
- Department of Chemistry, Indian Institute of Technology Jammu, Nagrota Bypass Road, Jammu and Kashmir - 181221, India.
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3
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Kuge K, Yamauchi K, Sakai K. Theoretical study on the mechanism of the hydrogen evolution reaction catalyzed by platinum subnanoclusters. Dalton Trans 2023; 52:583-597. [PMID: 36421022 DOI: 10.1039/d2dt02645g] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The smallest subnanocluster models of platinum colloid (Ptn) are supposed to diffuse in aqueous media in order to examine their behaviors when they are subjected to the electrocatalytic hydrogen evolution reaction under zero overpotential conditions at pH 0. The DFT approach allows us to clarify the nature of individual proton transfer (PT) and electron transfer (ET) processes together with the importance of relying on concerted proton-electron transfer (CPET) pathways to promote the majority of H* adsorption processes by Ptn subnanoclusters. Although the CPET processes are closely correlated with the Volmer steps (Pt + H+ + e- → Pt-H*) described so far in electrochemistry, our study for the first time points out the essential capability of the Ptn clusters to promote the multiple PT steps without the need to transfer any electrons, revealing the fundamentally high basicity of the naked Ptn clusters (pKa = 27-28 for Pt4, Pt5, and Pt6). The discrete cluster models adopted herein avoid the structural constraints forced by the standard slab models and enable us to discuss the drastic alterations in the geometric and electronic structures of the intermediates given by the consecutive promotion of multiple CPET steps. The weakening of the Pt-H* bond strength with the increasing number of CPET steps is well rationalized by carefully examining the changes in the ν(Pt-H*) vibrational frequencies, the hydricity, and the H2 desorption energy. The behaviors are also correlated with the underpotential and overpotential deposited hydrogen atoms (HUPD and HOPD) discussed in electrochemical studies for many years.
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Affiliation(s)
- Keita Kuge
- Department of Chemistry, Faculty of Science, 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.
| | - Ken Sakai
- Department of Chemistry, Faculty of Science, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan.
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4
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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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5
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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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6
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Lentz C, Schott O, Auvray T, Hanan GS, Elias B. Design and photophysical studies of iridium(iii)–cobalt(iii) dyads and their application for dihydrogen photo-evolution. Dalton Trans 2019; 48:15567-15576. [DOI: 10.1039/c9dt01989h] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We report several new dyads constituted of cationic iridium(iii) photosensitizers and cobalt(iii) catalyst connected via free pendant pyridine on the photosensitizers.
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Affiliation(s)
- Cédric Lentz
- Institute of Condensed Matter and Nanosciences
- Molecular Chemistry
- Materials and Catalysis Division (IMCN/MOST)
- Université catholique de Louvain
- 1348 Louvain-la-Neuve
| | - Olivier Schott
- Département de Chimie
- Université de Montréal
- 2900 Boulevard Edouard-Montpetit
- Montréal
- Canada
| | - Thomas Auvray
- Département de Chimie
- Université de Montréal
- 2900 Boulevard Edouard-Montpetit
- Montréal
- Canada
| | - Garry S. Hanan
- Département de Chimie
- Université de Montréal
- 2900 Boulevard Edouard-Montpetit
- Montréal
- Canada
| | - Benjamin Elias
- Institute of Condensed Matter and Nanosciences
- Molecular Chemistry
- Materials and Catalysis Division (IMCN/MOST)
- Université catholique de Louvain
- 1348 Louvain-la-Neuve
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7
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Geitner R, Götz S, Stach R, Siegmann M, Krebs P, Zechel S, Schreyer K, Winter A, Hager MD, Schubert US, Gräfe S, Dietzek B, Mizaikoff B, Schmitt M, Popp J. Hydrogel-Embedded Model Photocatalytic System Investigated by Raman and IR Spectroscopy Assisted by Density Functional Theory Calculations and Two-Dimensional Correlation Analysis. J Phys Chem A 2018; 122:2677-2687. [PMID: 29481748 DOI: 10.1021/acs.jpca.7b12648] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The presented study reports the synthesis and the vibrational spectroscopic characterization of different matrix-embedded model photocatalysts. The goal of the study is to investigate the interaction of a polymer matrix with photosensitizing dyes and metal complexes for potential future photocatalytic applications. The synthesis focuses on a new rhodamine B derivate and a Pt(II) terpyridine complex, which both contain a polymerizable methacrylate moiety and an acid labile acylhydrazone group. The methacrylate moieties are afterward utilized to synthesize functional model hydrogels mainly consisting of poly(ethylene glycol) methacrylate units. The pH-dependent and temperature-dependent behavior of the hydrogels is investigated by means of Raman and IR spectroscopy assisted by density functional theory calculations and two-dimensional correlation spectroscopy. The spectroscopic results reveal that the Pt(II) terpyridine complex can be released from the polymer matrix by cleaving the C═N bond in an acid environment. The same behavior could not be observed in the case of the rhodamine B dye although it features a comparable C═N bond. The temperature-dependent study shows that the water evaporation has a significant influence neither on the molecular structure of the hydrogel nor on the model photocatalytic moieties.
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Affiliation(s)
- Robert Geitner
- Institute for Physical Chemistry and Abbe Center of Photonics , Friedrich Schiller University Jena , Helmholtzweg 4 , 07743 Jena , Germany
| | - Stefan Götz
- Laboratory for Organic and Macromolecular Chemistry (IOMC) , Friedrich Schiller University Jena , Humboldtstrasse 10 , 07743 Jena , Germany.,Jena Center of Soft Matter (JCSM) , Friedrich Schiller University Jena , Philosophenweg 7 , 07743 Jena , Germany
| | - Robert Stach
- Institute for Analytical and Bioanalytical Chemistry , Ulm University , Albert-Einstein-Allee 11 , 89081 Ulm , Germany
| | - Michael Siegmann
- Institute for Physical Chemistry and Abbe Center of Photonics , Friedrich Schiller University Jena , Helmholtzweg 4 , 07743 Jena , Germany
| | - Patrick Krebs
- Institute for Analytical and Bioanalytical Chemistry , Ulm University , Albert-Einstein-Allee 11 , 89081 Ulm , Germany
| | - Stefan Zechel
- Laboratory for Organic and Macromolecular Chemistry (IOMC) , Friedrich Schiller University Jena , Humboldtstrasse 10 , 07743 Jena , Germany.,Jena Center of Soft Matter (JCSM) , Friedrich Schiller University Jena , Philosophenweg 7 , 07743 Jena , Germany
| | - Kristin Schreyer
- Laboratory for Organic and Macromolecular Chemistry (IOMC) , Friedrich Schiller University Jena , Humboldtstrasse 10 , 07743 Jena , Germany.,Jena Center of Soft Matter (JCSM) , Friedrich Schiller University Jena , Philosophenweg 7 , 07743 Jena , Germany
| | - Andreas Winter
- Laboratory for Organic and Macromolecular Chemistry (IOMC) , Friedrich Schiller University Jena , Humboldtstrasse 10 , 07743 Jena , Germany.,Jena Center of Soft Matter (JCSM) , Friedrich Schiller University Jena , Philosophenweg 7 , 07743 Jena , Germany
| | - Martin D Hager
- Laboratory for Organic and Macromolecular Chemistry (IOMC) , Friedrich Schiller University Jena , Humboldtstrasse 10 , 07743 Jena , Germany.,Jena Center of Soft Matter (JCSM) , Friedrich Schiller University Jena , Philosophenweg 7 , 07743 Jena , Germany
| | - Ulrich S Schubert
- Laboratory for Organic and Macromolecular Chemistry (IOMC) , Friedrich Schiller University Jena , Humboldtstrasse 10 , 07743 Jena , Germany.,Jena Center of Soft Matter (JCSM) , Friedrich Schiller University Jena , Philosophenweg 7 , 07743 Jena , Germany
| | - Stefanie Gräfe
- Institute for Physical Chemistry and Abbe Center of Photonics , Friedrich Schiller University Jena , Helmholtzweg 4 , 07743 Jena , Germany
| | - Benjamin Dietzek
- Institute for Physical Chemistry and Abbe Center of Photonics , Friedrich Schiller University Jena , Helmholtzweg 4 , 07743 Jena , Germany.,Leibniz Institute for Photonic Technology (IPHT) Jena , Albert-Einstein-Strasse 9 , 07745 Jena , Germany
| | - Boris Mizaikoff
- Institute for Analytical and Bioanalytical Chemistry , Ulm University , Albert-Einstein-Allee 11 , 89081 Ulm , Germany
| | - Michael Schmitt
- Institute for Physical Chemistry and Abbe Center of Photonics , Friedrich Schiller University Jena , Helmholtzweg 4 , 07743 Jena , Germany
| | - Jürgen Popp
- Institute for Physical Chemistry and Abbe Center of Photonics , Friedrich Schiller University Jena , Helmholtzweg 4 , 07743 Jena , Germany.,Jena Center of Soft Matter (JCSM) , Friedrich Schiller University Jena , Philosophenweg 7 , 07743 Jena , Germany.,Leibniz Institute for Photonic Technology (IPHT) Jena , Albert-Einstein-Strasse 9 , 07745 Jena , Germany
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8
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Schott O, Pal AK, Chartrand D, Hanan GS. A Bisamide Ruthenium Polypyridyl Complex as a Robust and Efficient Photosensitizer for Hydrogen Production. CHEMSUSCHEM 2017; 10:4436-4441. [PMID: 28945951 DOI: 10.1002/cssc.201701543] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 09/21/2017] [Indexed: 06/07/2023]
Abstract
A photosensitizer based on a ruthenium complex of a bisamide-polypyridyl ligand gives rise to a large improvement in photocatalytic stability, rate of activity, and efficiency in photocatalytic H2 production compared to [Ru(bpy)3 ]2+ (bpy=2,2'-bpyridine). The bisamide ruthenium polypyridyl complex combined with a cobaltoxime-based photocatalyst was found to be highly efficient under blue-light (turnover number (TON)=7800) and green-light irradiation (TON=7200) whereas [Ru(bpy)3 ]2+ was significantly less effective with a TON of 2600 and 1100, respectively. The greatest improvement was under red-light-emitting diodes, with bisamide ruthenium polypyridyl complex and cobaltoxime exhibiting a TON of 4200 compared to [Ru(bpy)3 ]2+ and cobaltoxime at a TON of only 71.
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Affiliation(s)
- Olivier Schott
- Départment de Chimie, Université de Montréal, 2900 Edouard-Montpetit, Montréal, Québec, H3T-1J4, Canada
| | - Amlan K Pal
- Départment de Chimie, Université de Montréal, 2900 Edouard-Montpetit, Montréal, Québec, H3T-1J4, Canada
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews, St Andrews, Fife, KY16 9ST, United Kingdom
| | - Daniel Chartrand
- LAMP-Laboratoire d'Analyse pour les Molécules et Matériaux Photoactifs-Laboratory for the Analysis of Molecules' and Materials' Photoactivity, Université de Montréal, 5155 Chemin de la Rampe, Montréal, Québec, H3T 2B1, Canada
| | - Garry S Hanan
- Départment de Chimie, Université de Montréal, 2900 Edouard-Montpetit, Montréal, Québec, H3T-1J4, Canada
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9
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Koshiba K, Yamauchi K, Sakai K. A Nickel Dithiolate Water Reduction Catalyst Providing Ligand-Based Proton-Coupled Electron-Transfer Pathways. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700927] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Keita Koshiba
- 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; 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; 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; Japan
- Center for Molecular Systems (CMS); Kyushu University; Japan
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10
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Koshiba K, Yamauchi K, Sakai K. A Nickel Dithiolate Water Reduction Catalyst Providing Ligand-Based Proton-Coupled Electron-Transfer Pathways. Angew Chem Int Ed Engl 2017; 56:4247-4251. [PMID: 28276659 DOI: 10.1002/anie.201700927] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Indexed: 12/22/2022]
Abstract
A nickel pyrazinedithiolate ([Ni(dcpdt)2 ]2- ; dcpdt=5,6-dicyanopyrazine-2,3-dithiolate), bearing a NiS4 core similar to the active center of [NiFe] hydrogenase, is shown to serve as an efficient molecular catalyst for the hydrogen evolution reaction (HER). This catalyst shows effectively low overpotentials for HER (330-400 mV at pH 4-6). Moreover, the turnover number of catalysis reaches 20 000 over the 24 h electrolysis with a high Faradaic efficiency, 92-100 %. The electrochemical and DFT studies reveal that diprotonated one-electron-reduced species (i.e., [NiII (dcpdt)(dcpdtH2 )]- or [NiII (dcpdtH)2 ]- ) forms at pH<6.4 via ligand-based proton-coupled electron-transfer (PCET) pathways, leading to electrocatalytic HER without applying the highly negative potential required to generate low-valent nickel intermediates. This is the first example of catalysts exhibiting such behavior.
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Affiliation(s)
- Keita Koshiba
- 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, 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, 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, Japan.,Center for Molecular Systems (CMS), Kyushu University, Japan
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11
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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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12
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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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13
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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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14
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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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15
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Yamamoto K, Kitamoto K, Yamauchi K, Sakai K. Pt(ii)-Catalyzed photosynthesis for H2 evolution cycling between singly and triply reduced species. Chem Commun (Camb) 2015; 51:14516-9. [DOI: 10.1039/c5cc03558a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A platinum(ii)-based single-component molecular photocatalyst for hydrogen evolution from water cycling between the singly and triply reduced forms is reported.
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Affiliation(s)
- Keiya Yamamoto
- Department of Chemistry
- Faculty of Sciences
- Kyushu University
- Higashi-ku
- Japan
| | - Kyoji Kitamoto
- Department of Chemistry
- Faculty of Sciences
- Kyushu University
- Higashi-ku
- Japan
| | - Kosei Yamauchi
- Department of Chemistry
- Faculty of Sciences
- Kyushu University
- Higashi-ku
- Japan
| | - Ken Sakai
- Department of Chemistry
- Faculty of Sciences
- Kyushu University
- Higashi-ku
- Japan
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