1
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Kamogawa K, Kato Y, Tamaki Y, Noguchi T, Nozaki K, Nakagawa T, Ishitani O. Overall reaction mechanism of photocatalytic CO 2 reduction on a Re(i)-complex catalyst unit of a Ru(ii)-Re(i) supramolecular photocatalyst. Chem Sci 2024; 15:2074-2088. [PMID: 38332814 PMCID: PMC10848666 DOI: 10.1039/d3sc06059d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Accepted: 12/20/2023] [Indexed: 02/10/2024] Open
Abstract
Rhenium(i) complexes fac-[ReI(diimine)(CO)3(L)]n+ are mostly used and evaluated as photocatalysts and catalysts in both photochemical and electrochemical systems for CO2 reduction. However, the selective reduction mechanism of CO2 to CO is unclear, although numerous mechanistic studies have been reported. A Ru(ii)-Re(i) supramolecular photocatalyst with fac-[ReI(diimine)(CO)3{OC(O)OCH2CH2NR2}] (R = C2H4OH) as a catalyst unit (RuC2Re) exhibits very high efficiency, selectivity, and durability of CO formation in photocatalytic CO2 reduction reactions. In this work, the reaction mechanism of photocatalytic CO2 reduction using RuC2Re is fully clarified. Time-resolved IR (TR-IR) measurements using rapid-scan FT-IR spectroscopy with laser flash photolysis verify the formation of RuC2Re(COOH) with a carboxylic acid unit, i.e., fac-[ReI(diimine)(CO)3(COOH)], in the photocatalytic reaction solution. Additionally, this important intermediate is detected in an actual photocatalytic reaction using steady state irradiation. Kinetics analysis of the TR-IR spectra and DFT calculations demonstrated the reaction mechanism of the conversion of the one-electron reduced species of RuC2Re with a fac-[ReI(diimine˙-)(CO)3{OC(O)OCH2CH2NR2}]- unit, which was produced via the photochemical reduction of RuC2Re by 1,3-dimethyl-2-phenyl-2,3-dihydro-1H-benzo[d]imidazole (BIH), to RuC2Re(COOH). The kinetics of the recovery processes of the starting complex RuC2Re from RuC2Re(COOH) accompanying the release of CO and OH- was also clarified. As a side reaction of RuC2Re(COOH), a long-lived carboxylate-ester complex with a fac-[ReI(diimine)(CO)3(COOC2H4NR2)] unit, which was produced by the nucleophilic attack of TEOA to one of the carbonyl ligands of RuC2Re(CO) with a fac-[ReI(diimine)(CO)4]+ unit, was formed during the photocatalytic reaction. This complex works not only as a precursor in another minor CO formation process but also as an external photosensitiser that photochemically reduces the other complexes i.e., RuC2Re, RuC2Re(COOH), and the intermediate that is reductively converted to RuC2Re(COOH).
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Affiliation(s)
- Kei Kamogawa
- Department of Chemistry, School of Science, Tokyo Institute of Technology 2-12-1-NE-2 O-okayama, Meguro-ku Tokyo 152-8550 Japan
| | - Yuki Kato
- Department of Physics, Graduate School of Science, Nagoya University Nagoya 464-8602 Japan
| | - Yusuke Tamaki
- Department of Chemistry, School of Science, Tokyo Institute of Technology 2-12-1-NE-2 O-okayama, Meguro-ku Tokyo 152-8550 Japan
| | - Takumi Noguchi
- Department of Physics, Graduate School of Science, Nagoya University Nagoya 464-8602 Japan
| | - Koichi Nozaki
- Department of Chemistry, Graduated School of Science and Engineering, University of Toyama 3190, Gofuku, Toya-ma-shi Toyama 930-8555 Japan
| | - Tatsuo Nakagawa
- UNISOKU Co., Ltd 2-4-3 Kasugano, Hirakata Osaka 573-0131 Japan
| | - Osamu Ishitani
- Department of Chemistry, School of Science, Tokyo Institute of Technology 2-12-1-NE-2 O-okayama, Meguro-ku Tokyo 152-8550 Japan
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University 1-3-1 Kagamiyama, Higashi-Hiroshima Hiroshima 739 8526 Japan
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2
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Qiu LQ, Yao X, Zhang YK, Li HR, He LN. Advancements and Challenges in Reductive Conversion of Carbon Dioxide via Thermo-/Photocatalysis. J Org Chem 2022; 88:4942-4964. [PMID: 36342846 DOI: 10.1021/acs.joc.2c02179] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Carbon dioxide (CO2) is the major greenhouse gas and also an abundant and renewable carbon resource. Therefore, its chemical conversion and utilization are of great attraction for sustainable development. Especially, reductive conversion of CO2 with energy input has become a current hotspot due to its ability to access fuels and various important chemicals. Nowadays, the controllable CO2 hydrogenation to formic acid and alcohols using sustainable H2 resources has been regarded as an appealing solution to hydrogen storage and CO2 accumulation. In addition, photocatalytic CO2 reduction to CO also provides a potential way to utilize this greenhouse gas efficiently. Besides direct CO2 hydrogenation, CO2 reductive functionalization integrates CO2 reduction with subsequent C-X (X = N, S, C, O) bond formation and indirect transformation strategies, enlarging the diverse products derived from CO2 and promoting CO2 reductive conversion into a new stage. In this Perspective, the progress and challenges of CO2 reductive conversion, including hydrogenation, reductive functionalization, photocatalytic reduction, and photocatalytic reductive functionalization are summarized and discussed along with the key issues and future trends/directions in this field. We hope this Perspective can evoke intense interest and inspire much innovation in the promise of CO2 valorization.
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Affiliation(s)
- Li-Qi Qiu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xiangyang Yao
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yong-Kang Zhang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Hong-Ru Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
- College of Pharmacy, Nankai University, Tianjin 300353, China
| | - Liang-Nian He
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
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3
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Poland EM, Ho CC. Photoactive N‐Heterocyclic Carbene Transition Metal Complexes in Bond‐Forming Photocatalysis: State‐of‐the‐Art and Opportunities. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Eve M. Poland
- School of Natural Sciences – Chemistry University of Tasmania Hobart Tasmania Australia
| | - Curtis C. Ho
- School of Natural Sciences – Chemistry University of Tasmania Hobart Tasmania Australia
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4
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Tang M, Cameron L, Poland EM, Yu LJ, Moggach SA, Fuller RO, Huang H, Sun J, Thickett SC, Massi M, Coote ML, Ho CC, Bissember AC. Photoactive Metal Carbonyl Complexes Bearing N-Heterocyclic Carbene Ligands: Synthesis, Characterization, and Viability as Photoredox Catalysts. Inorg Chem 2022; 61:1888-1898. [PMID: 35025492 DOI: 10.1021/acs.inorgchem.1c02964] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This report details the synthesis and characterization of a small family of previously unreported, structurally related chromium, molybdenum, tungsten, manganese, and iron complexes bearing N-heterocyclic carbene and carbonyl supporting ligands. These complexes have the general form [ML(CO)3X] or [ML(CO)3], where X = CO or Br and L = 1-phenyl-3-(2-pyridyl)imidazolin-2-ylidene. Where possible, the solid-state, spectroscopic, electrochemical, and photophysical properties of these molecules were studied using a combination of experiment and theory. Photophysical studies reveal that decarbonylation occurs when these complexes are exposed to ultraviolet light, with the CO ligand being replaced with a labile acetonitrile solvent molecule. To obtain insights into the potential utility, scope, and applications of these complexes in visible-light-mediated photoredox catalysis, their capacity to facilitate a range of photoinduced reactions via the reductive or oxidative functionalization of organic molecules was investigated. These chromium, molybdenum, and manganese catalysts efficiently facilitated atom-transfer radical addition processes. In light of their photolability, these types of catalysts may potentially allow for the development of photoinduced reactions involving less conventional inner-sphere electron-transfer pathways.
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Affiliation(s)
- Meiqiong Tang
- School of Natural Sciences-Chemistry, University of Tasmania (UTAS), Hobart, Tasmania7001, Australia
| | - Lee Cameron
- School of Molecular and Life Sciences, Curtin University, Perth, Western Australia6102, Australia
| | - Eve M Poland
- School of Natural Sciences-Chemistry, University of Tasmania (UTAS), Hobart, Tasmania7001, Australia
| | - Li-Juan Yu
- Research School of Chemistry, Australian National University, Canberra, Australian Capital Territory2601, Australia
| | - Stephen A Moggach
- School of Molecular Sciences, University of Western Australia, Perth, Western Australia6009, Australia
| | - Rebecca O Fuller
- School of Natural Sciences-Chemistry, University of Tasmania (UTAS), Hobart, Tasmania7001, Australia
| | - Hai Huang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou213164, China
| | - Jianwei Sun
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, SAR, China
| | - Stuart C Thickett
- School of Natural Sciences-Chemistry, University of Tasmania (UTAS), Hobart, Tasmania7001, Australia
| | - Massimiliano Massi
- School of Molecular and Life Sciences, Curtin University, Perth, Western Australia6102, Australia
| | - Michelle L Coote
- Research School of Chemistry, Australian National University, Canberra, Australian Capital Territory2601, Australia
| | - Curtis C Ho
- School of Natural Sciences-Chemistry, University of Tasmania (UTAS), Hobart, Tasmania7001, Australia
| | - Alex C Bissember
- School of Natural Sciences-Chemistry, University of Tasmania (UTAS), Hobart, Tasmania7001, Australia
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5
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Qiu LQ, Chen KH, Yang ZW, Ren FY, He LN. Prolonging the Triplet State Lifetimes of Rhenium Complexes with Imidazole-Pyridine Framework for Efficient CO 2 Photoreduction. Chemistry 2021; 27:15536-15544. [PMID: 34431546 DOI: 10.1002/chem.202102837] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Indexed: 11/08/2022]
Abstract
The photocatalytic reduction of CO2 into fuels offers the prospect for creating a new CO2 economy. Harnessing visible light-driven CO2 -to-CO reduction mediated by the long-lived triplet excited state of rhenium(I) tricarbonyl complexes is a challenging approach. We here develop a series of new mononuclear rhenium(I) tricarbonyl complexes (Re-1-Re-4) based on the imidazole-pyridine skeleton for photo-driven CO2 reduction. These catalysts are featured by combining pyridyl-imidazole with the aromatic ring and different pendant organic groups onto the N1 position of 1,3-imidazole unit, which display phosphorescence under Ar-saturated solution even at ambient conditions. By contrast, {Re[9-(pyren-1-yl)-10-(pyridin-2-yl)-9H-pyreno[4,5-d]imidazole)](CO)3 Cl} (Re-4) by introducing pyrene ring at the N1 position of pyrene-fused imidazole unit exhibits superior catalytic performance with a higher turnover number for CO (TONCO =124) and >99.9 % selectivity, primarily ascribed to the strong visible light-harvesting ability, long-lived triplet lifetimes (164.2 μs) and large reductive quenching constant. Moreover, the rhenium(I) tricarbonyl complexes derived from π-extended pyrene chromophore exhibit a long lifetime corresponding to its ligand-localized triplet state (3 IL) evidenced from spectroscopic investigations and DFT calculations.
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Affiliation(s)
- Li-Qi Qiu
- Department State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | - Kai-Hong Chen
- Department State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | - Zhi-Wen Yang
- Department State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | - Fang-Yu Ren
- Department State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
| | - Liang-Nian He
- Department State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, P. R. China
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Acosta A, Antipán J, Fernández M, Prado G, Sandoval-Altamirano C, Günther G, Gutiérrez-Urrutia I, Poblete-Castro I, Vega A, Pizarro N. Photochemistry of P,N-bidentate rhenium(i) tricarbonyl complexes: reactive species generation and potential application for antibacterial photodynamic therapy. RSC Adv 2021; 11:31959-31966. [PMID: 35495525 PMCID: PMC9041655 DOI: 10.1039/d1ra06416a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 09/14/2021] [Indexed: 12/22/2022] Open
Abstract
In this work, we describe the photoisomerization of facial rhenium(i) tricarbonyl complexes bearing P,N-bidentate pyridyl/phosphine ligands with different chelating rings and anions: RePNBr, RePNTfO, and RePNNBr, which are triggered under irradiation at 365 nm in solutions. The apparent photodegradation rate constants (k app) depend on the coordinating ability of the solvent, being lowest in acetonitrile. The k app value increases as the temperature rises, suggesting a reactive IL excited state thermally populated from the MLCT excited state involved. Using the Eyring equation, positive activation enthalpies (ΔH ≠) accompanied by high negative values for the activation entropy (ΔS ≠) were obtained. These results suggest whatever the P,N-ligand or anion, the reaction proceeds through a strongly solvated or a compact transition state, which is compatible with an associative mechanism for the photoisomerization. A 100-fold decrease in the log10 CFU value is observed for E. coli and S. aureus in irradiated solutions of the compounds, which follows the same tendency as their singlet oxygen generation quantum yield: RePNBr > RePNTfO > RePNNBr, while no antibacterial activity is observed in the darkness. This result indicates that the generation of singlet oxygen plays a key role in the antibacterial capacity of these complexes.
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Affiliation(s)
- Alison Acosta
- Universidad Técnica Federico Santa María, Centro de Biotecnología Avenida España 1680 Valparaíso Chile
| | - Javier Antipán
- Universidad Andres Bello, Facultad de Ciencias Exactas, Departamento de Ciencias Químicas Viña del Mar Chile
| | - Mariano Fernández
- Universidad Andres Bello, Facultad de Ciencias Exactas, Departamento de Ciencias Químicas Viña del Mar Chile
| | - Gaspar Prado
- Universidad Andres Bello, Facultad de Ciencias Exactas, Departamento de Ciencias Químicas Viña del Mar Chile
| | - Catalina Sandoval-Altamirano
- Universidad de Santiago de Chile (USACH), Facultad de Química y Biología, Departamento de Ciencias del Ambiente Chile
| | - Germán Günther
- Universidad de Chile, Facultad de Ciencias Químicas y Farmacéuticas, Departamento de Química Orgánica y Fisicoquímica Santiago Chile
| | - Izabook Gutiérrez-Urrutia
- Universidad Andrés Bello, Facultad de Ciencias de la Vida, Center for Bioinformatics and Integrative Biology (CBIB), Biosystems Engineering Laboratory Santiago Chile
| | - Ignacio Poblete-Castro
- Universidad Andrés Bello, Facultad de Ciencias de la Vida, Center for Bioinformatics and Integrative Biology (CBIB), Biosystems Engineering Laboratory Santiago Chile
| | - Andrés Vega
- Universidad Andres Bello, Facultad de Ciencias Exactas, Departamento de Ciencias Químicas Viña del Mar Chile
| | - Nancy Pizarro
- Universidad Andres Bello, Facultad de Ciencias Exactas, Departamento de Ciencias Químicas Viña del Mar Chile
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7
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Auvray T, Pal AK, Hanan GS. Electronic Properties of Rhenium(I) Carbonyl Complexes Bearing Strongly Donating Hexahydro‐Pyrimidopyrimidine Based Ligands. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Thomas Auvray
- Département de Chimie Université de Montréal, Complexe des Sciences, B-3419 1375 Avenue Thérèse-Lavoie-Roux Montréal QC H2V 0B3 Canada
| | - Amlan K. Pal
- Department of Chemistry Indian Institute of Technology Jammu, Jagti Campus Nagrota Bypass Road Jammu & Kashmir 181221 India
| | - Garry S. Hanan
- Département de Chimie Université de Montréal, Complexe des Sciences, B-3419 1375 Avenue Thérèse-Lavoie-Roux Montréal QC H2V 0B3 Canada
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8
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Kamogawa K, Shimoda Y, Miyata K, Onda K, Yamazaki Y, Tamaki Y, Ishitani O. Mechanistic study of photocatalytic CO 2 reduction using a Ru(ii)-Re(i) supramolecular photocatalyst. Chem Sci 2021; 12:9682-9693. [PMID: 34349939 PMCID: PMC8294001 DOI: 10.1039/d1sc02213j] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 05/20/2021] [Indexed: 12/04/2022] Open
Abstract
Supramolecular photocatalysts comprising [Ru(diimine)3]2+ photosensitiser and fac-[Re(diimine)(CO)3{OC(O)OC2H4NR2}] catalyst units can be used to reduce CO2 to CO with high selectivity, durability and efficiency. In the presence of triethanolamine, the Re catalyst unit efficiently takes up CO2 to form a carbonate ester complex, and then direct photocatalytic reduction of a low concentration of CO2, e.g., 10% CO2, can be achieved using this type of supramolecular photocatalyst. In this work, the mechanism of the photocatalytic reduction of CO2 was investigated applying such a supramolecular photocatalyst, RuC2Re with a carbonate ester ligand, using time-resolved visible and infrared spectroscopies and electrochemical methods. Using time-resolved spectroscopic measurements, the kinetics of the photochemical formation processes of the one-electron-reduced species RuC2(Re)−, which is an essential intermediate in the photocatalytic reaction, were clarified in detail and its electronic structure was elucidated. These studies also showed that RuC2(Re)− is stable for 10 ms in the reaction solution. Cyclic voltammograms measured at various scan rates besides temperature and kinetic analyses of RuC2(Re)− produced by steady-state irradiation indicated that the subsequent reaction of RuC2(Re)− proceeds with an observed first-order rate constant of approximately 1.8 s−1 at 298 K and is a unimolecular reaction, independent of the concentrations of both CO2 and RuC2(Re)−. Formation processes and reactivity of an important intermediate of photocatalytic CO2 reduction, one-electron reduced species of a Ru(ii)–Re(i) supramolecular photocatalyst with a carbonate ester ligand, were investigated in detail.![]()
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Affiliation(s)
- Kei Kamogawa
- Department of Chemistry, Tokyo Institute of Technology O-okayama 2-12-1, NE1, Meguro-ku Tokyo 152-8550 Japan
| | - Yuushi Shimoda
- Department of Chemistry, Kyushu University Fukuoka 819-0395 Japan
| | - Kiyoshi Miyata
- Department of Chemistry, Kyushu University Fukuoka 819-0395 Japan
| | - Ken Onda
- Department of Chemistry, Kyushu University Fukuoka 819-0395 Japan
| | - Yasuomi Yamazaki
- Department of Chemistry, Tokyo Institute of Technology O-okayama 2-12-1, NE1, Meguro-ku Tokyo 152-8550 Japan
| | - Yusuke Tamaki
- Department of Chemistry, Tokyo Institute of Technology O-okayama 2-12-1, NE1, Meguro-ku Tokyo 152-8550 Japan
| | - Osamu Ishitani
- Department of Chemistry, Tokyo Institute of Technology O-okayama 2-12-1, NE1, Meguro-ku Tokyo 152-8550 Japan
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9
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Sasaki K, Yoshino H, Shimoda Y, Saigo M, Miyata K, Onda K, Sugimoto K, Yamate H, Miura H, Le Ouay B, Ohtani R, Ohba M. Guest-Tunable Excited States in a Cyanide-Bridged Luminescent Coordination Polymer. Inorg Chem 2021; 60:6140-6146. [PMID: 33853327 DOI: 10.1021/acs.inorgchem.1c00702] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The excited-state energy was tuned successfully by guest molecules in a cyanide-bridged luminescent coordination polymer (CP). Methanol or ethanol vapor reversibly and significantly changed the luminescent color of the CP between green and yellow (Δλem = 32 nm). These vapors did not significantly affect the environment around the luminophore in the ground state of the CP, whereas they modulated the excited states for the resulting bathochromic shift. The time-resolved photoluminescent spectra of the CP systems showed that solvent adsorption enhanced the energetic relaxation in the excited states. Furthermore, time-resolved infrared spectroscopy indicated that cyanide bridging in the CP became more flexible in the excited states than that in the ground state, highlighting the sensitivity of the excited states to external stimuli, such as the guest vapor. Overall, guest-tunable excited states will allow the more straightforward design of sensing materials by characterizing the transient excited states.
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Affiliation(s)
- Kenta Sasaki
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Haruka Yoshino
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Yuushi Shimoda
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Masaki Saigo
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kiyoshi Miyata
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Ken Onda
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kunihisa Sugimoto
- Research & Utilization Division, Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Hitomi Yamate
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Hiroki Miura
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Benjamin Le Ouay
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Ryo Ohtani
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Masaaki Ohba
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
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10
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Rotundo L, Grills DC, Gobetto R, Priola E, Nervi C, Polyansky DE, Fujita E. Photochemical CO
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Reduction Using Rhenium(I) Tricarbonyl Complexes with Bipyridyl‐Type Ligands with and without Second Coordination Sphere Effects. CHEMPHOTOCHEM 2021. [DOI: 10.1002/cptc.202000307] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Laura Rotundo
- Chemistry Department University of Torino Via P. Giuria 7 10125 Torino Italy
- CIRCC Via Celso Ulpiani 27, 70126 Bari Italy
| | - David C. Grills
- Chemistry Division Brookhaven National Laboratory Upton NY 11973–5000 USA
| | - Roberto Gobetto
- Chemistry Department University of Torino Via P. Giuria 7 10125 Torino Italy
- CIRCC Via Celso Ulpiani 27, 70126 Bari Italy
| | - Emanuele Priola
- Chemistry Department University of Torino Via P. Giuria 7 10125 Torino Italy
- CIRCC Via Celso Ulpiani 27, 70126 Bari Italy
| | - Carlo Nervi
- Chemistry Department University of Torino Via P. Giuria 7 10125 Torino Italy
- CIRCC Via Celso Ulpiani 27, 70126 Bari Italy
| | | | - Etsuko Fujita
- Chemistry Division Brookhaven National Laboratory Upton NY 11973–5000 USA
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11
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Shirley H, Sexton TM, Liyanage NP, Perkins MA, Autry SA, McNamara LE, Hammer NI, Parkin SR, Tschumper GS, Delcamp JH. Probing the Effects of Electron Deficient Aryl Substituents and a π‐System Extended NHC Ring on the Photocatalytic CO
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Reduction Reaction with Re‐pyNHC‐Aryl Complexes**. CHEMPHOTOCHEM 2021. [DOI: 10.1002/cptc.202000296] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hunter Shirley
- Department of Chemistry and Biochemistry University of Mississippi 322 Coulter Hall University MS 38677–1848 USA
| | - Thomas More Sexton
- Department of Chemistry and Biochemistry University of Mississippi 322 Coulter Hall University MS 38677–1848 USA
| | - Nalaka P. Liyanage
- Department of Chemistry and Biochemistry University of Mississippi 322 Coulter Hall University MS 38677–1848 USA
| | - Morgan A. Perkins
- Department of Chemistry and Biochemistry University of Mississippi 322 Coulter Hall University MS 38677–1848 USA
| | - Shane A. Autry
- Department of Chemistry and Biochemistry University of Mississippi 322 Coulter Hall University MS 38677–1848 USA
| | - Louis E. McNamara
- Department of Chemistry and Biochemistry University of Mississippi 322 Coulter Hall University MS 38677–1848 USA
| | - Nathan I. Hammer
- Department of Chemistry and Biochemistry University of Mississippi 322 Coulter Hall University MS 38677–1848 USA
| | - Sean R. Parkin
- Department of Chemistry University of Kentucky 125 Chemistry/Physics Building Lexington KY 40506–0055 USA
| | - Gregory S. Tschumper
- Department of Chemistry and Biochemistry University of Mississippi 322 Coulter Hall University MS 38677–1848 USA
| | - Jared H. Delcamp
- Department of Chemistry and Biochemistry University of Mississippi 322 Coulter Hall University MS 38677–1848 USA
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12
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Auvray T, Del Secco B, Dubreuil A, Zaccheroni N, Hanan GS. In-Depth Study of the Electronic Properties of NIR-Emissive κ 3N Terpyridine Rhenium(I) Dicarbonyl Complexes. Inorg Chem 2021; 60:70-79. [PMID: 33332962 DOI: 10.1021/acs.inorgchem.0c02188] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The structure-properties relationship in a series of carbonyl rhenium(I) complexes based on substituted terpyridine ligands of general formula [Re(κxN-Rtpy)(CO)yL]n+ is explored by both experimental and theoretical methods. In these compounds, the terpyridine ligands adopt both bidentate (κ2N) and terdentate (κ3N) coordination modes associated with three or two carbonyls, respectively. Conversion from the κ2N to the κ3N coordination mode leads to large changes in the absorption spectra and oxidation potentials due to destabilization of the HOMO level of each complex. The absorption profiles of the κ3N complexes cover the whole visible spectra with lower maxima around 700 nm, tailing out to 800 nm, while no emission is observed with Br- as the axial ligand L. When the axial ligand is modified from the native halide to pyridine or triphenylphosphine, the lowest absorption band is blue-shifted by 60 and 90 nm, respectively. These cationic complexes are near-infrared emitters with emission maxima between 840 and 950 nm for the pyridine compounds and 780-800 nm for the triphenylphosphine compounds.
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Affiliation(s)
- Thomas Auvray
- Département de Chimie, Université de Montréal, Montréal, Canada H2V-0B3
| | - Benedetta Del Secco
- Dipartimento di Chimica 'G. Ciamician',Università degli Studi di Bologna, Via S. Giacomo 11, 40126 Bologna, Italy
| | - Amélie Dubreuil
- Département de Chimie, Université de Montréal, Montréal, Canada H2V-0B3
| | - Nelsi Zaccheroni
- Dipartimento di Chimica 'G. Ciamician',Università degli Studi di Bologna, Via S. Giacomo 11, 40126 Bologna, Italy
| | - Garry S Hanan
- Département de Chimie, Université de Montréal, Montréal, Canada H2V-0B3
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13
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Shimoda Y, Miyata K, Saigo M, Tsuchiya Y, Adachi C, Onda K. Intramolecular-rotation driven triplet-to-singlet upconversion and fluctuation induced fluorescence activation in linearly connected donor–acceptor molecules. J Chem Phys 2020; 153:204702. [DOI: 10.1063/5.0029608] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Yuushi Shimoda
- Department of Chemistry, Kyushu University, 744 Motooka, Nishi, Fukuoka 829-0395, Japan
| | - Kiyoshi Miyata
- Department of Chemistry, Kyushu University, 744 Motooka, Nishi, Fukuoka 829-0395, Japan
| | - Masaki Saigo
- Department of Chemistry, Kyushu University, 744 Motooka, Nishi, Fukuoka 829-0395, Japan
| | - Youichi Tsuchiya
- Center for Organic Photonics and Electronics Research (OPERA), Kyushu University, 744 Motooka, Nishi, Fukuoka 819-0395, Japan
- JST, ERATO, Adachi Molecular Exciton Engineering Project, Kyushu University, 744 Motooka, Nishi, Fukuoka 819-0395, Japan
| | - Chihaya Adachi
- Center for Organic Photonics and Electronics Research (OPERA), Kyushu University, 744 Motooka, Nishi, Fukuoka 819-0395, Japan
- JST, ERATO, Adachi Molecular Exciton Engineering Project, Kyushu University, 744 Motooka, Nishi, Fukuoka 819-0395, Japan
| | - Ken Onda
- Department of Chemistry, Kyushu University, 744 Motooka, Nishi, Fukuoka 829-0395, Japan
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14
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Romain C, Bellemin-Laponnaz S, Dagorne S. Recent progress on NHC-stabilized early transition metal (group 3–7) complexes: Synthesis and applications. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213411] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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15
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Stout MJ, Skelton BW, Sobolev AN, Raiteri P, Massi M, Simpson PV. Synthesis and Photochemical Properties of Re(I) Tricarbonyl Complexes Bound to Thione and Thiazol-2-ylidene Ligands. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00381] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Matthew J. Stout
- Curtin Institute for Functional Molecules and Interfaces, School of Molecular and Life Sciences, Curtin University, Kent Street, Bentley 6102, Perth, Western Australia, Australia
| | - Brian W. Skelton
- School of Molecular Sciences and CMCA, the University of Western Australia, 35 Stirling Highway, 6009 Perth, Western Australia, Australia
| | - Alexandre N. Sobolev
- School of Molecular Sciences and CMCA, the University of Western Australia, 35 Stirling Highway, 6009 Perth, Western Australia, Australia
| | - Paolo Raiteri
- Curtin Institute for Computation and School of Life and Molecular Sciences, Curtin University, Kent Street, Bentley 6102, Perth, Western Australia, Australia
| | - Massimiliano Massi
- Curtin Institute for Functional Molecules and Interfaces, School of Molecular and Life Sciences, Curtin University, Kent Street, Bentley 6102, Perth, Western Australia, Australia
| | - Peter V. Simpson
- Curtin Institute for Functional Molecules and Interfaces, School of Molecular and Life Sciences, Curtin University, Kent Street, Bentley 6102, Perth, Western Australia, Australia
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16
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Soupart A, Alary F, Heully JL, Elliott PIP, Dixon IM. Theoretical Study of the Full Photosolvolysis Mechanism of [Ru(bpy)3]2+: Providing a General Mechanistic Roadmap for the Photochemistry of [Ru(N^N)3]2+-Type Complexes toward Both Cis and Trans Photoproducts. Inorg Chem 2020; 59:14679-14695. [DOI: 10.1021/acs.inorgchem.0c01843] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Adrien Soupart
- Laboratoire de Chimie et Physique Quantiques, Université de Toulouse, CNRS, 118 route de Narbonne, 31062 Toulouse, France
| | - Fabienne Alary
- Laboratoire de Chimie et Physique Quantiques, Université de Toulouse, CNRS, 118 route de Narbonne, 31062 Toulouse, France
| | - Jean-Louis Heully
- Laboratoire de Chimie et Physique Quantiques, Université de Toulouse, CNRS, 118 route de Narbonne, 31062 Toulouse, France
| | - Paul I. P. Elliott
- Department of Chemistry and Centre for Functional Materials, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, U.K
| | - Isabelle M. Dixon
- Laboratoire de Chimie et Physique Quantiques, Université de Toulouse, CNRS, 118 route de Narbonne, 31062 Toulouse, France
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17
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Shirley H, Sexton TM, Liyanage NP, Palmer CZ, McNamara LE, Hammer NI, Tschumper GS, Delcamp JH. Effect of “X” Ligands on the Photocatalytic Reduction of CO
2
to CO with Re(pyridylNHC‐CF
3
)(CO)
3
X Complexes. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000283] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Hunter Shirley
- Department of Chemistry and Biochemistry University of Mississippi 322 Coulter Hall 38677 University MS USA
| | - Thomas More Sexton
- Department of Chemistry and Biochemistry University of Mississippi 322 Coulter Hall 38677 University MS USA
| | - Nalaka P. Liyanage
- Department of Chemistry and Biochemistry University of Mississippi 322 Coulter Hall 38677 University MS USA
| | - C. Zachary Palmer
- Department of Chemistry and Biochemistry University of Mississippi 322 Coulter Hall 38677 University MS USA
| | - Louis E. McNamara
- Department of Chemistry and Biochemistry University of Mississippi 322 Coulter Hall 38677 University MS USA
| | - Nathan I. Hammer
- Department of Chemistry and Biochemistry University of Mississippi 322 Coulter Hall 38677 University MS USA
| | - Gregory S. Tschumper
- Department of Chemistry and Biochemistry University of Mississippi 322 Coulter Hall 38677 University MS USA
| | - Jared H. Delcamp
- Department of Chemistry and Biochemistry University of Mississippi 322 Coulter Hall 38677 University MS USA
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18
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Suntrup L, Stein F, Klein J, Wilting A, Parlane FGL, Brown CM, Fiedler J, Berlinguette CP, Siewert I, Sarkar B. Rhenium Complexes of Pyridyl-Mesoionic Carbenes: Photochemical Properties and Electrocatalytic CO 2 Reduction. Inorg Chem 2020; 59:4215-4227. [PMID: 32155052 DOI: 10.1021/acs.inorgchem.9b02591] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Mesoionic carbenes have found wide use as components of homogeneous catalysts. Recent discoveries have, however, shown that metal complexes of such ligands also have huge potential in photochemical research and in the activation of small molecules. We present here three ReI complexes with mesoionic pyridyl-carbene ligands. The complexes display reduction steps which were investigated via UV-vis-NIR-IR spectro-electrochemistry, and these results point toward an EC mechanism. The ReI compounds emit in the visible range in solution at room temperature with excited state lifetimes that are dependent on the substituents of the mesoionic carbenes. These complexes are also potent electrocatalysts for the selective reduction of CO2 to CO. Whereas the substituents on the carbenes have no influence on the reduction potentials, the electrocatalytic efficiency is strongly dependent on the substituents. This fact is likely a result of catalyst instability. The results presented here thus introduce mesoionic carbenes as new potent ligands for the generation of emissive ReI complexes and for electrocatalytic CO2 reduction.
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Affiliation(s)
- Lisa Suntrup
- Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstraße 34-36, Berlin 14195, Germany
| | - Felix Stein
- Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstraße 34-36, Berlin 14195, Germany
| | - Johannes Klein
- Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstraße 34-36, Berlin 14195, Germany
| | - Alexander Wilting
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstraße 4, Göttingen 37077, Germany
| | - Fraser G L Parlane
- Department of Chemistry, The University of British Columbia, 2036 East Mall, Vancouver, BC V6T1Z1, Canada.,Stewart Blusson Quantum Matter Institute, The University of British Columbia, 2355 East Mall, Vancouver, BC V6T1Z4, Canada
| | - Christopher M Brown
- Department of Chemistry, The University of British Columbia, 2036 East Mall, Vancouver, BC V6T1Z1, Canada
| | - Jan Fiedler
- The Czech Academy of Sciences, J. Heyrovský Institute of Physical Chemistry, v.v.i., Dolejškova 3, Prague 18223, Czech Republic
| | - Curtis P Berlinguette
- Department of Chemistry, The University of British Columbia, 2036 East Mall, Vancouver, BC V6T1Z1, Canada.,Stewart Blusson Quantum Matter Institute, The University of British Columbia, 2355 East Mall, Vancouver, BC V6T1Z4, Canada.,Department of Chemical and Biological Engineering, The University of British Columbia, 2360 East Mall, Vancouver, BC V6T1Z3, Canada
| | - Inke Siewert
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstraße 4, Göttingen 37077, Germany
| | - Biprajit Sarkar
- Institut für Chemie und Biochemie, Freie Universität Berlin, Fabeckstraße 34-36, Berlin 14195, Germany.,Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, Stuttgart D-70569, Germany
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19
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Miyata K, Nagaoka R, Hada M, Tanaka T, Mishima R, Kuroda T, Sueta S, Iida T, Yamashita Y, Nishikawa T, Tsuruta K, Hayashi Y, Onda K, Kiwa T, Teranishi T. Liquid-like dielectric response is an origin of long polaron lifetime exceeding 10 μs in lead bromide perovskites. J Chem Phys 2020; 152:084704. [DOI: 10.1063/1.5127993] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Affiliation(s)
- Kiyoshi Miyata
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi, Fukuoka 819-0395, Japan
| | - Ryota Nagaoka
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Masaki Hada
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
- Tsukuba Research Center for Interdisciplinary Materials Science (TREMS), Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8573, Japan
| | - Takanori Tanaka
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi, Fukuoka 819-0395, Japan
| | - Ryuji Mishima
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Taihei Kuroda
- Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Sota Sueta
- Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Takumi Iida
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Yoshifumi Yamashita
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Takeshi Nishikawa
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Kenji Tsuruta
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Yasuhiko Hayashi
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Ken Onda
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi, Fukuoka 819-0395, Japan
| | - Toshihiko Kiwa
- Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Takashi Teranishi
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
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20
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Yamazaki Y, Ohkubo K, Saito D, Yatsu T, Tamaki Y, Tanaka S, Koike K, Onda K, Ishitani O. Kinetics and Mechanism of Intramolecular Electron Transfer in Ru(II)-Re(I) Supramolecular CO 2-Reduction Photocatalysts: Effects of Bridging Ligands. Inorg Chem 2019; 58:11480-11492. [PMID: 31418554 DOI: 10.1021/acs.inorgchem.9b01256] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The supramolecular photocatalysts in which a Ru(II) complex as a molecular redox photosensitizer unit and a Re(I) complex as a molecular catalyst unit are connected with a various alkyl or ether chain have attracted attention because they can efficiently photocatalyze CO2 reduction with high durability and high selectivity of CO formation, especially on various solid materials such as semiconductor electrodes and mesoporous organosilica. The intramolecular electron transfer from the one-electron reduced photosensitizer unit to the catalyst unit, which follows excitation of the photosensitizer unit and subsequent reductive quenching of the excited photosensitizer unit by a reductant, is one of the most important processes in the photocatalytic reduction of CO2. We succeeded in determining the rate constants of this intramolecular electron transfer process by using subnanosecond time-resolved IR spectroscopy. The logarithm of rate constants shows a linear relationship with the lengths of the bridging chain in the supramolecular photocatalysts with one bridging alkyl or ether chain. In conformity with the exponential decay of the wave function and the coupling element in the long-distance electron transfer, the apparent decay coefficient factor (β) in the supramolecular photocatalysts with one bridging chain was determined to be 0.74 Å-1. In the supramolecular photocatalyst with two ethylene chains connecting between the photosensitizer and catalyst units, on the other hand, the intramolecular electron transfer rate is much faster than that with only one ethylene chain. These results strongly indicate that the intramolecular electron transfer from the one-electron reduced species of the Ru photosensitizer unit to the Re catalyst unit proceeds by the through-bond mechanism.
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Affiliation(s)
- Yasuomi Yamazaki
- Department of Chemistry , Tokyo Institute of Technology , O-okayama 2-12-1-NE-1 , Meguro-ku , Tokyo 152-8550 , Japan
| | - Kei Ohkubo
- Department of Chemistry , Tokyo Institute of Technology , O-okayama 2-12-1-NE-1 , Meguro-ku , Tokyo 152-8550 , Japan
| | - Daiki Saito
- Department of Chemistry , Tokyo Institute of Technology , O-okayama 2-12-1-NE-1 , Meguro-ku , Tokyo 152-8550 , Japan
| | - Taiki Yatsu
- Department of Chemistry , Tokyo Institute of Technology , O-okayama 2-12-1-NE-1 , Meguro-ku , Tokyo 152-8550 , Japan
| | - Yusuke Tamaki
- Department of Chemistry , Tokyo Institute of Technology , O-okayama 2-12-1-NE-1 , Meguro-ku , Tokyo 152-8550 , Japan
| | - Sei'ichi Tanaka
- Department of Chemistry , Tokyo Institute of Technology , O-okayama 2-12-1-NE-1 , Meguro-ku , Tokyo 152-8550 , Japan
| | - Kazuhide Koike
- National Institute of Advanced Industrial Science and Technology , 16-1 Onogawa , Tsukuba , Ibaraki 305-8569 , Japan
| | - Ken Onda
- Department of Chemistry , Kyushu University , 744 Motooka , Nishi-ku, Fukuoka , 819-0395 , Japan
| | - Osamu Ishitani
- Department of Chemistry , Tokyo Institute of Technology , O-okayama 2-12-1-NE-1 , Meguro-ku , Tokyo 152-8550 , Japan
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21
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Onda K, Ohkubo K, Yamazaki Y, Koike K, Tanaka S, Ishitani O. Direct Measurement of Intramolecular Electron Transfer in a Series of Artificial Photosynthesis Processes. EPJ WEB OF CONFERENCES 2019. [DOI: 10.1051/epjconf/201920509037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
We have directly determined the intramolecular electron transfer rate and revealed its mechanism in supramolecular complexes during CO2 photoreduction by time-resolved infrared spectroscopic measurements over a wide temporal range.
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22
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Luengo A, Fernández-Moreira V, Marzo I, Gimeno MC. Bioactive Heterobimetallic Re(I)/Au(I) Complexes Containing Bidentate N-Heterocyclic Carbenes. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00601] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Andrés Luengo
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Vanesa Fernández-Moreira
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Isabel Marzo
- Departamento de Bioquímica y Biología Molecular, Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - M. Concepción Gimeno
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
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23
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Tricarbonylrhenium(I) complexes with the N-methylpyridine-2-carbothioamide ligand – Synthesis, characterization and cytotoxicity studies. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.04.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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24
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Koike K, Grills DC, Tamaki Y, Fujita E, Okubo K, Yamazaki Y, Saigo M, Mukuta T, Onda K, Ishitani O. Investigation of excited state, reductive quenching, and intramolecular electron transfer of Ru(ii)-Re(i) supramolecular photocatalysts for CO 2 reduction using time-resolved IR measurements. Chem Sci 2018; 9:2961-2974. [PMID: 29719677 PMCID: PMC5897880 DOI: 10.1039/c7sc05338j] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2017] [Accepted: 02/13/2018] [Indexed: 11/25/2022] Open
Abstract
Supramolecular photocatalysts in which Ru(ii) photosensitizer and Re(i) catalyst units are connected to each other by an ethylene linker are among the best known, most effective and durable photocatalytic systems for CO2 reduction. In this paper we report, for the first time, time-resolved infrared (TRIR) spectra of three of these binuclear complexes to uncover why the catalysts function so efficiently. Selective excitation of the Ru unit with a 532 nm laser pulse induces slow intramolecular electron transfer from the 3MLCT excited state of the Ru unit to the Re unit, with rate constants of (1.0-1.1) × 104 s-1 as a major component and (3.5-4.3) × 106 s-1 as a minor component, in acetonitrile. The produced charge-separated state has a long lifetime, with charge recombination rate constants of only (6.5-8.4) × 104 s-1. Thus, although it has a large driving force (-ΔG0CR ∼ 2.6 eV), this process is in the Marcus inverted region. On the other hand, in the presence of 1-benzyl-1,4-dihydronicotinamide (BNAH), reductive quenching of the excited Ru unit proceeds much faster (kq[BNAH (0.2 M)] = (3.5-3.8) × 106 s-1) than the abovementioned intramolecular oxidative quenching, producing the one-electron-reduced species (OERS) of the Ru unit. Nanosecond TRIR data clearly show that intramolecular electron transfer from the OERS of the Ru unit to the Re unit (kET > 2 × 107 s-1) is much faster than from the excited state of the Ru unit, and that it is also faster than the reductive quenching process of the excited Ru unit by BNAH. To measure the exact value of kET, picosecond TRIR spectroscopy and a stronger reductant were used. Thus, in the case of the binuclear complex with tri(p-fluorophenyl)phosphine ligands (RuRe(FPh)), for which intramolecular electron transfer is expected to be the fastest among the three binuclear complexes, in the presence of 1,3-dimethyl-2-phenyl-2,3-dihydro-1H-benzo[d]imidazole (BIH), kET was measured as kET = (1.4 ± 0.1) × 109 s-1. This clearly shows that intramolecular electron transfer in these RuRe binuclear supramolecular photocatalysts is not the rate-determining process in the photocatalytic reduction of CO2, which is one of the main reasons why they work so efficiently.
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Affiliation(s)
- Kazuhide Koike
- National Institute of Advanced Industrial Science and Technology , 16-1 Onogawa , Tsukuba , Ibaraki 305-8569 , Japan .
| | - David C Grills
- Chemistry Division , Brookhaven National Laboratory , Upton , NY 11973-5000 , USA .
| | - Yusuke Tamaki
- Department of Chemistry , Tokyo Institute of Technology , O-okayama 2-12-1, E1-9 , Meguro-ku , Tokyo 152-8550 , Japan .
| | - Etsuko Fujita
- Chemistry Division , Brookhaven National Laboratory , Upton , NY 11973-5000 , USA .
| | - Kei Okubo
- Department of Chemistry , Tokyo Institute of Technology , O-okayama 2-12-1, E1-9 , Meguro-ku , Tokyo 152-8550 , Japan .
| | - Yasuomi Yamazaki
- Department of Chemistry , Tokyo Institute of Technology , O-okayama 2-12-1, E1-9 , Meguro-ku , Tokyo 152-8550 , Japan .
| | - Masaki Saigo
- Department of Chemistry , Kyushu University , Fukuoka 819-0395 , Japan .
| | - Tatsuhiko Mukuta
- Department of Chemistry , Tokyo Institute of Technology , O-okayama 2-12-1, E1-9 , Meguro-ku , Tokyo 152-8550 , Japan .
| | - Ken Onda
- Department of Chemistry , Kyushu University , Fukuoka 819-0395 , Japan .
| | - Osamu Ishitani
- Department of Chemistry , Tokyo Institute of Technology , O-okayama 2-12-1, E1-9 , Meguro-ku , Tokyo 152-8550 , Japan .
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25
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A Robust Pyridyl-NHC-Ligated Rhenium Photocatalyst for CO2 Reduction in the Presence of Water and Oxygen. INORGANICS 2018. [DOI: 10.3390/inorganics6010022] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Re(pyNHC-PhCF3)(CO)3Br is a highly active photocatalyst for CO2 reduction. The PhCF3 derivative was previously empirically shown to be a robust catalyst. Here, the role of the PhCF3 group is probed computationally and the robust nature of this catalyst is analyzed with regard to the presence of water and oxygen introduced in controlled amounts during the photocatalytic reduction of CO2 to CO with visible light. This complex was found to work well from 0–1% water concentration reproducibly; however, trace amounts of water were required for benchmark Re(bpy)(CO)3Cl to give reproducible reactivity. When ambient air is added to the reaction mixture, the NHC complex was found to retain substantial performance (~50% of optimized reactivity) at up to 40% ambient atmosphere and 60% CO2 while the Re(bpy)(CO)3Cl complex was found to give a dramatically reduced CO2 reduction reactivity upon introduction of ambient atmosphere. Through the use of time-correlated single photon counting studies and prior electrochemical results, we reasoned that this enhanced catalyst resilience is due to a mechanistic difference between the NHC- and bpy-based catalysts. These results highlight an important feature of this NHC-ligated catalyst: substantially enhanced stability toward common reaction contaminates.
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26
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Simpson PV, Falasca M, Massi M. Properties and prospects for rhenium(i) tricarbonyl N-heterocyclic carbene complexes. Chem Commun (Camb) 2018; 54:12429-12438. [DOI: 10.1039/c8cc06596a] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Rhenium tricarbonyl complexes bound to N-heterocyclic carbene ligands are emerging as a new class of complexes with promising applications in a wide variety of areas.
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Affiliation(s)
- Peter V. Simpson
- School of Molecular and Life Science, Curtin Institute for Functional Molecules and Interfaces, Curtin University
- Bentley 6102 WA
- Australia
| | - Marco Falasca
- Metabolic Signalling Group, School of Pharmacy and Biomedical Sciences, Curtin Health Innovation Research Institute, Curtin University
- Bentley 6102 WA
- Australia
| | - Massimiliano Massi
- School of Molecular and Life Science, Curtin Institute for Functional Molecules and Interfaces, Curtin University
- Bentley 6102 WA
- Australia
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27
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Siegmund D, Lorenz N, Gothe Y, Spies C, Geissler B, Prochnow P, Nuernberger P, Bandow JE, Metzler-Nolte N. Benzannulated Re(i)–NHC complexes: synthesis, photophysical properties and antimicrobial activity. Dalton Trans 2017; 46:15269-15279. [DOI: 10.1039/c7dt02874a] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A series of novel Re(i)(CO)3–NHC complexes bearing unsubstituted benzimidazol-2-ylidene ligands is presented which provide strong luminescence as well as high antibacterial activity.
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Affiliation(s)
- Daniel Siegmund
- Inorganic Chemistry I
- Bioinorganic Chemistry
- Faculty of Chemistry and Biochemistry
- Ruhr University Bochum
- 44801 Bochum
| | - Nicole Lorenz
- Inorganic Chemistry I
- Bioinorganic Chemistry
- Faculty of Chemistry and Biochemistry
- Ruhr University Bochum
- 44801 Bochum
| | - Yvonne Gothe
- Inorganic Chemistry I
- Bioinorganic Chemistry
- Faculty of Chemistry and Biochemistry
- Ruhr University Bochum
- 44801 Bochum
| | - Christian Spies
- Physical Chemistry II
- Faculty of Chemistry and Biochemistry
- Ruhr University Bochum
- 44801 Bochum
- Germany
| | - Bastian Geissler
- Physical Chemistry II
- Faculty of Chemistry and Biochemistry
- Ruhr University Bochum
- 44801 Bochum
- Germany
| | - Pascal Prochnow
- Applied Microbiology
- Faculty of Biology and Biotechnology
- Ruhr University Bochum
- 44780 Bochum
- Germany
| | - Patrick Nuernberger
- Physical Chemistry II
- Faculty of Chemistry and Biochemistry
- Ruhr University Bochum
- 44801 Bochum
- Germany
| | - Julia E. Bandow
- Applied Microbiology
- Faculty of Biology and Biotechnology
- Ruhr University Bochum
- 44780 Bochum
- Germany
| | - Nils Metzler-Nolte
- Inorganic Chemistry I
- Bioinorganic Chemistry
- Faculty of Chemistry and Biochemistry
- Ruhr University Bochum
- 44801 Bochum
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