1
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Jaros SW, Sokolnicki J, Siczek M, Smoleński P. Strategy for an Effective Eco-Optimized Design of Heteroleptic Cu(I) Coordination Polymers Exhibiting Thermally Activated Delayed Fluorescence. Inorg Chem 2023. [PMID: 38010323 DOI: 10.1021/acs.inorgchem.3c01908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
The new series of copper(I) coordination polymers [Cu(N-N)(μ-PTA)]n[PF6]n {N-N = dmbpy (1), bpy (2), ncup (3), and phen (4)} were generated by straightforward reaction in solution or through a mechanochemical route, of [Cu(MeCN)4][PF6] with 1,3,5-triaza-7-phosphaadamantane (PTA) and the corresponding polypyridines, namely, 5,5'-dimethyl-2,2'-bipyridine (dmbpy), 2,2'-bipyridine (bpy), 2,9-dimethyl-1,10-phenanthroline (ncup), and 1,10-phenanthroline (phen). The compounds were obtained as air-stable solids and fully characterized by IR, NMR spectroscopy, and elemental analyses. The molecular structures were confirmed by single-crystal X-ray diffraction analysis (for 1, 2, and 4), revealing infinite one-dimensional (1D) linear chains driven by μ-PTA N,P-linkers. All tested Cu(I) polymeric compounds show emission at room temperature, which was attributed to thermally activated delayed fluorescence (TADF). Evidence of the involvement of the excited singlet state in the emission process is presented. Comparing the photophysical properties of 1 and 2 as well as 3 and 4, of which 1 and 3 have a stiffened structure, by introducing a methyl group to one of the ligands, we demonstrate how TADF properties depend on molecular rigidity. It is shown that stiffening of the structure reduces the flattening distortion around the Cu(I) center in the 3MLCT state. As a result, the ΔE(S1-T1) energy gap becomes smaller and the fluorescence quantum yield increases without significantly extending the emission lifetime. In particular, the ΔE(S1-T1) values for complexes 1 and 3 are among the shortest reported in the scientific literature, 253 and 337 cm-1, and the TADF lifetimes are τ(300 K) = 5.7 and 4.2 μs, respectively. The fluorescence quantum yields for these complexes are measured to be ΦPL(300 K) = 70 and 80%.
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Affiliation(s)
- Sabina W Jaros
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland
| | - Jerzy Sokolnicki
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland
| | - Miłosz Siczek
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland
| | - Piotr Smoleński
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383 Wrocław, Poland
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2
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Sandoval-Pauker C, Pinter B. Quasi-Restricted Orbital Description of the Copper(I) Photoredox Catalytic Cycle. J Chem Phys 2022; 157:074306. [DOI: 10.1063/5.0094380] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
In this computational study, the electronic structure changes along the oxidative and reductive quenching cycles of a homoleptic and a heteroleptic prototype Cu(I) photoredox catalyst, namely [Cu(dmp)2]+ (dmp = 2,9-dimethyl-1,10-phenanthroline) and [Cu(phen)(POP)]+ (POP = bis[2-(diphenylphosphino)phenyl]ether) are scrutinized and characterized using quasi-restricted orbitals (QRO), electron density differences and spin densities. After validating our density functional theory-based computational protocol, the equilibrium geometries and wavefunctions (using QROs and atom/fragment compositions) of the four states involved in photoredox cycle (S0, T1, Dox and Dred) are systematically and thoroughly described. The formal ground and excited state ligand- and metal-centered redox events are substantiated by the QRO description of the open-shell triplet 3MLCT (d9L-1), Dox (d9L0) and Dred (d10L-1) species and the corresponding structural changes, e.g., flattening distortion, shortening/elongation of Cu-N/Cu-P bonds, are rationalized in terms of the underlying electronic structure transformations. Amongst others, we reveal the molecular-scale delocalization of the ligand-centered radical in the a 3MLCT (d9L-1) and Dred (d9L-1) states of homoleptic [Cu(dmp)2]+ and its localization to the redox-active phenanthroline ligand in the case of heteroleptic [Cu(phen)(POP)]+.
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Affiliation(s)
- Christian Sandoval-Pauker
- The University of Texas at El Paso Department of Chemistry and Biochemistry, United States of America
| | - Balazs Pinter
- Department of Chemistry and Biochemistry, The University of Texas at El Paso Department of Chemistry and Biochemistry, United States of America
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3
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Sandoval-Pauker C, Santander-Nelli M, Dreyse P. Thermally activated delayed fluorescence in luminescent cationic copper(i) complexes. RSC Adv 2022; 12:10653-10674. [PMID: 35425025 PMCID: PMC8985689 DOI: 10.1039/d1ra08082b] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 03/27/2022] [Indexed: 01/02/2023] Open
Abstract
In this work, the photophysical characteristics of [Cu(N^N)2]+ and [Cu(N^N)(P^P)]+ complexes were described. The concept of thermally activated delayed fluorescence (TADF) and its development throughout the years was also explained. The importance of ΔE (S1-T1) and spin-orbital coupling (SOC) values on the TADF behavior of [Cu(N^N)2]+ and [Cu(N^N)(P^P)]+ complexes is discussed. Examples of ΔE (S1-T1) values reported in the literature were collected and some trends were proposed (e.g. the effect of the substituents at the 2,9 positions of the phenanthroline ligand). Besides, the techniques (or calculation methods) used for determining ΔE (S1-T1) values were described. The effect of SOC in TADF was also discussed, and examples of the determination of SOC values by DFT and TD-DFT calculations are provided. The last chapter covers the applications of [Cu(N^N)2]+ and [Cu(N^N)(P^P)]+ TADF complexes and the challenges that are still needed to be addressed to ensure the industrial applications of these compounds.
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Affiliation(s)
- Christian Sandoval-Pauker
- Department of Chemistry and Biochemistry, University of Texas at El Paso El Paso TX 79968 USA
- Departamento de Química, Universidad Técnica Federico Santa María Av. España 1680 Casilla 2390123 Valparaíso Chile
| | - Mireya Santander-Nelli
- Advanced Integrated Technologies (AINTECH) Chorrillo Uno, Parcela 21 Lampa Santiago Chile
- Centro Integrativo de Biología y Química Aplicada (CIBQA), Universidad Bernardo O'Higgins General Gana 1702 Santiago 8370854 Chile
| | - Paulina Dreyse
- Departamento de Química, Universidad Técnica Federico Santa María Av. España 1680 Casilla 2390123 Valparaíso Chile
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4
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Sandoval-Pauker C, Molina-Aguirre G, Pinter B. Status report on copper (I) complexes in photoredox catalysis; photophysical and electrochemical properties and future prospects. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115105] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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5
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Agapova A, Alberico E, Kammer A, Junge H, Beller M. Catalytic Dehydrogenation of Formic Acid with Ruthenium‐PNP‐Pincer Complexes: Comparing N‐Methylated and NH‐Ligands. ChemCatChem 2019. [DOI: 10.1002/cctc.201801897] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Anastasiya Agapova
- Leibniz-Institut für Katalyse e. V. an derUniversität Rostock Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Elisabetta Alberico
- Leibniz-Institut für Katalyse e. V. an derUniversität Rostock Albert-Einstein-Straße 29a 18059 Rostock Germany
- Istituto di Chimica BiomolecolareConsiglio Nazionale delle Ricerche tr. La Crucca 3 07100 Sassari Italy
| | - Anja Kammer
- Leibniz-Institut für Katalyse e. V. an derUniversität Rostock Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Henrik Junge
- Leibniz-Institut für Katalyse e. V. an derUniversität Rostock Albert-Einstein-Straße 29a 18059 Rostock Germany
| | - Matthias Beller
- Leibniz-Institut für Katalyse e. V. an derUniversität Rostock Albert-Einstein-Straße 29a 18059 Rostock Germany
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6
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Stylidou V, Kavaratzi K, Papazoglou I, Hatzidimitriou AG, Papadopoulos AG, Angaridis P, Aslanidis P. Binuclear Copper(I) Compounds with N-Heterocyclic Thiolate and Diphosphane Ligands: Effects of Thiolate Ligands on Solid-State Molecular Structures and Luminescence Properties. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800076] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Vilelmini Stylidou
- Laboratory of Inorganic Chemistry; Department of Chemistry; Aristotle University of Thessaloniki; University Campus 54124 Thessaloniki Greece
| | - Konstantina Kavaratzi
- Laboratory of Inorganic Chemistry; Department of Chemistry; Aristotle University of Thessaloniki; University Campus 54124 Thessaloniki Greece
| | - Ioannis Papazoglou
- Laboratory of Inorganic Chemistry; Department of Chemistry; Aristotle University of Thessaloniki; University Campus 54124 Thessaloniki Greece
| | - Antonios G. Hatzidimitriou
- Laboratory of Inorganic Chemistry; Department of Chemistry; Aristotle University of Thessaloniki; University Campus 54124 Thessaloniki Greece
| | - Anastasios G. Papadopoulos
- Laboratory of Applied Quantum Chemistry; Department of Chemistry; Aristotle University of Thessaloniki; 54124 Thessaloniki Greece
| | - Panagiotis Angaridis
- Laboratory of Inorganic Chemistry; Department of Chemistry; Aristotle University of Thessaloniki; University Campus 54124 Thessaloniki Greece
| | - Paraskevas Aslanidis
- Laboratory of Inorganic Chemistry; Department of Chemistry; Aristotle University of Thessaloniki; University Campus 54124 Thessaloniki Greece
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7
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Reim I, Wriedt B, Tastan Ü, Ziegenbalg D, Karnahl M. Impact of the Type of Reactor and the Catalytic Conditions on the Photocatalytic Production of Hydrogen Using a Fully Noble-Metal-Free System. ChemistrySelect 2018. [DOI: 10.1002/slct.201800289] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Immanuel Reim
- Institute of Organic Chemistry; University of Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Benjamin Wriedt
- Institute of Chemical Technology; University of Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Ümit Tastan
- Institute of Chemical Technology; University of Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Dirk Ziegenbalg
- Institute of Chemical Technology; University of Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Michael Karnahl
- Institute of Organic Chemistry; University of Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
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8
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Zhang Y, Schulz M, Wächtler M, Karnahl M, Dietzek B. Heteroleptic diimine–diphosphine Cu(I) complexes as an alternative towards noble-metal based photosensitizers: Design strategies, photophysical properties and perspective applications. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2017.10.016] [Citation(s) in RCA: 130] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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9
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Experimental and spin-orbit coupled TDDFT predictions of photophysical properties of three-coordinate mononuclear and four-coordinate binuclear copper(I) complexes with thioamidines and bulky triarylphosphanes. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.12.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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10
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Heberle M, Tschierlei S, Rockstroh N, Ringenberg M, Frey W, Junge H, Beller M, Lochbrunner S, Karnahl M. Heteroleptic Copper Photosensitizers: Why an Extended π-System Does Not Automatically Lead to Enhanced Hydrogen Production. Chemistry 2016; 23:312-319. [DOI: 10.1002/chem.201604005] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Martin Heberle
- Institute of Organic Chemistry; University of Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Stefanie Tschierlei
- Institute of Organic Chemistry; University of Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
- Institute of Physics; University of Rostock; Albert-Einstein-Str. 23 18059 Rostock Germany
| | - Nils Rockstroh
- Leibniz-Institute for Catalysis at the; University of Rostock (LIKAT); Albert-Einstein-Str. 29a 18059 Rostock Germany
| | - Mark Ringenberg
- Institute of Inorganic Chemistry; University of Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Wolfgang Frey
- Institute of Organic Chemistry; University of Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
| | - Henrik Junge
- Leibniz-Institute for Catalysis at the; University of Rostock (LIKAT); Albert-Einstein-Str. 29a 18059 Rostock Germany
| | - Matthias Beller
- Leibniz-Institute for Catalysis at the; University of Rostock (LIKAT); Albert-Einstein-Str. 29a 18059 Rostock Germany
| | - Stefan Lochbrunner
- Institute of Physics; University of Rostock; Albert-Einstein-Str. 23 18059 Rostock Germany
| | - Michael Karnahl
- Institute of Organic Chemistry; University of Stuttgart; Pfaffenwaldring 55 70569 Stuttgart Germany
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11
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An efficient nanostructured copper(I) sulfide-based hydrogen evolution electrocatalyst at neutral pH. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.08.129] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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12
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van de Watering FF, Lutz M, Dzik WI, de Bruin B, Reek JNH. Reactivity of a Ruthenium-Carbonyl Complex in the Methanol Dehydrogenation Reaction. ChemCatChem 2016; 8:2752-2756. [PMID: 27917245 PMCID: PMC5129501 DOI: 10.1002/cctc.201600709] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Indexed: 11/11/2022]
Abstract
Finding new catalysts for the release of molecular hydrogen from methanol is of high relevance in the context of the development of sustainable energy carriers. Herein, we report that the ruthenium complex Ru(salbinapht)(CO)(Pi‐Pr3) {salbinapht=2‐[({2′‐[(2‐hydroxybenzyl)amino]‐[1,1′‐binaphthalen]‐2‐yl}imino)methyl]phenolato} (2) catalyzes the methanol dehydrogenation reaction in the presence of base and water to yield H2, formate, and carbonate. Dihydrogen is the only gas detected and a turnover frequency up to 55 h−1 at 82 °C is reached. Complex 2 bears a carbonyl ligand that is derived from methanol, as is demonstrated by labeling experiments. The carbonyl ligand can be treated with base to form formate (HCOO−) and hydrogen. The nature of the active species is further shown not to contain a CO ligand but likely still possesses a salen‐derived ligand. During catalysis, formation of Ru(CO)2(H)2(P‐iPr3)2 is occasionally observed, which is also an active methanol dehydrogenation catalyst.
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Affiliation(s)
- Fenna F van de Watering
- Homogeneous, Supramolecular and Bio-Inspired Catalysis Van't Hoff Institute for Molecular Sciences University of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
| | - Martin Lutz
- Crystal and Structural Chemistry, Bijvoet Center for Biomolecular Research Faculty of Science Utrecht University Padualaan 8 3584 CH Utrecht The Netherlands
| | - Wojciech I Dzik
- Homogeneous, Supramolecular and Bio-Inspired Catalysis Van't Hoff Institute for Molecular Sciences University of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
| | - Bas de Bruin
- Homogeneous, Supramolecular and Bio-Inspired Catalysis Van't Hoff Institute for Molecular Sciences University of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
| | - Joost N H Reek
- Homogeneous, Supramolecular and Bio-Inspired Catalysis Van't Hoff Institute for Molecular Sciences University of Amsterdam Science Park 904 1098 XH Amsterdam The Netherlands
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13
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Knorn M, Rawner T, Czerwieniec R, Reiser O. [Copper(phenanthroline)(bisisonitrile)]+-Complexes for the Visible-Light-Mediated Atom Transfer Radical Addition and Allylation Reactions. ACS Catal 2015. [DOI: 10.1021/acscatal.5b01071] [Citation(s) in RCA: 145] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Matthias Knorn
- Institut
für Organische Chemie, Universität Regensburg, Universitätsstraße
31, 93053 Regensburg, Germany
| | - Thomas Rawner
- Institut
für Organische Chemie, Universität Regensburg, Universitätsstraße
31, 93053 Regensburg, Germany
| | - Rafał Czerwieniec
- Institut
für Physikalische Chemie, Universität Regensburg, Universitätsstraße
31, 93053 Regensburg, Germany
| | - Oliver Reiser
- Institut
für Organische Chemie, Universität Regensburg, Universitätsstraße
31, 93053 Regensburg, Germany
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14
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Purchase RL, de Groot HJM. Biosolar cells: global artificial photosynthesis needs responsive matrices with quantum coherent kinetic control for high yield. Interface Focus 2015; 5:20150014. [PMID: 26052428 PMCID: PMC4410567 DOI: 10.1098/rsfs.2015.0014] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
This contribution discusses why we should consider developing artificial photosynthesis with the tandem approach followed by the Dutch BioSolar Cells consortium, a current operational paradigm for a global artificial photosynthesis project. We weigh the advantages and disadvantages of a tandem converter against other approaches, including biomass. Owing to the low density of solar energy per unit area, artificial photosynthetic systems must operate at high efficiency to minimize the land (or sea) area required. In particular, tandem converters are a much better option than biomass for densely populated countries and use two photons per electron extracted from water as the raw material into chemical conversion to hydrogen, or carbon-based fuel when CO2 is also used. For the average total light sum of 40 mol m−2 d−1 for The Netherlands, the upper limits are many tons of hydrogen or carbon-based fuel per hectare per year. A principal challenge is to forge materials for quantitative conversion of photons to chemical products within the physical limitation of an internal potential of ca 2.9 V. When going from electric charge in the tandem to hydrogen and back to electricity, only the energy equivalent to 1.23 V can be stored in the fuel and regained. A critical step is then to learn from nature how to use the remaining difference of ca 1.7 V effectively by triple use of one overpotential for preventing recombination, kinetic stabilization of catalytic intermediates and finally generating targeted heat for the release of oxygen. Probably the only way to achieve this is by using bioinspired responsive matrices that have quantum–classical pathways for a coherent conversion of photons to fuels, similar to what has been achieved by natural selection in evolution. In appendix A for the expert, we derive a propagator that describes how catalytic reactions can proceed coherently by a convergence of time scales of quantum electron dynamics and classical nuclear dynamics. We propose that synergy gains by such processes form a basis for further progress towards high efficiency and yield for a global project on artificial photosynthesis. Finally, we look at artificial photosynthesis research in The Netherlands and use this as an example of how an interdisciplinary approach is beneficial to artificial photosynthesis research. We conclude with some of the potential societal consequences of a large-scale roll out of artificial photosynthesis.
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Affiliation(s)
- R L Purchase
- Biophysical Organic Chemistry/Solid State NMR , Leiden Institute of Chemistry , PO Box 9502, 2300 RA Leiden , The Netherlands
| | - H J M de Groot
- Biophysical Organic Chemistry/Solid State NMR , Leiden Institute of Chemistry , PO Box 9502, 2300 RA Leiden , The Netherlands
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15
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Yamada Y, Nomura A, Tadokoro H, Fukuzumi S. A composite photocatalyst of an organic electron donor–acceptor dyad and a Pt catalyst supported on semiconductor nanosheets for efficient hydrogen evolution from oxalic acid. Catal Sci Technol 2015. [DOI: 10.1039/c4cy01005a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Pt catalyst was closely located to an organic photosensitiser on a negatively charged semiconductor for efficient photocatalytic H2 evolution.
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Affiliation(s)
- Yusuke Yamada
- Department of Material and Life Science
- Graduate School of Engineering
- Osaka University
- ALCA
- Japan Science and Technology Agency (JST)
| | - Akifumi Nomura
- Department of Material and Life Science
- Graduate School of Engineering
- Osaka University
- ALCA
- Japan Science and Technology Agency (JST)
| | - Hideyuki Tadokoro
- Department of Material and Life Science
- Graduate School of Engineering
- Osaka University
- ALCA
- Japan Science and Technology Agency (JST)
| | - Shunichi Fukuzumi
- Department of Material and Life Science
- Graduate School of Engineering
- Osaka University
- ALCA
- Japan Science and Technology Agency (JST)
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16
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Tschierlei S, Karnahl M, Rockstroh N, Junge H, Beller M, Lochbrunner S. Substitution-controlled excited state processes in heteroleptic copper(I) photosensitizers used in hydrogen evolving systems. Chemphyschem 2014; 15:3709-13. [PMID: 25236384 DOI: 10.1002/cphc.201402585] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Indexed: 11/08/2022]
Abstract
Four different heteroleptic [Cu(N^N)(P^P)]PF6 complexes, which combine classical bidentate diimine ligands and sterically demanding diphosphine ligands, are studied by a combination of ultrafast time-resolved spectroscopy and quantum chemical calculations. The light-induced excited state processes, accompanied by a structural change, are discussed with respect to the application of these complexes as a new class of noble-metal-free photosensitizers in proton reducing systems. In particular, the influence of different substituents in the ligand backbone on the photophysical properties is highlighted.
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Affiliation(s)
- Stefanie Tschierlei
- University of Rostock, Institute of Physics, Universitätsplatz 3, 18055 Rostock (Germany).
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17
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18
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Fischer S, Hollmann D, Tschierlei S, Karnahl M, Rockstroh N, Barsch E, Schwarzbach P, Luo SP, Junge H, Beller M, Lochbrunner S, Ludwig R, Brückner A. Death and Rebirth: Photocatalytic Hydrogen Production by a Self-Organizing Copper–Iron System. ACS Catal 2014. [DOI: 10.1021/cs500387e] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Steffen Fischer
- Institute
of Chemistry, Department Physical Chemistry, University of Rostock, Dr. Lorenz-Weg 1, 18059 Rostock, Germany
- Leibniz
Institute for Catalysis at the University of Rostock, Albert Einstein-Straße
29a, 18059 Rostock, Germany
| | - Dirk Hollmann
- Leibniz
Institute for Catalysis at the University of Rostock, Albert Einstein-Straße
29a, 18059 Rostock, Germany
| | - Stefanie Tschierlei
- Institute
of Physics, University of Rostock, Universitätsplatz 3, 18055 Rostock, Germany
| | - Michael Karnahl
- Leibniz
Institute for Catalysis at the University of Rostock, Albert Einstein-Straße
29a, 18059 Rostock, Germany
| | - Nils Rockstroh
- Leibniz
Institute for Catalysis at the University of Rostock, Albert Einstein-Straße
29a, 18059 Rostock, Germany
| | - Enrico Barsch
- Institute
of Chemistry, Department Physical Chemistry, University of Rostock, Dr. Lorenz-Weg 1, 18059 Rostock, Germany
- Leibniz
Institute for Catalysis at the University of Rostock, Albert Einstein-Straße
29a, 18059 Rostock, Germany
| | - Patrick Schwarzbach
- Institute
of Physics, University of Rostock, Universitätsplatz 3, 18055 Rostock, Germany
| | - Shu-Ping Luo
- Leibniz
Institute for Catalysis at the University of Rostock, Albert Einstein-Straße
29a, 18059 Rostock, Germany
- State
Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Zhejiang University of Technology, 310014 Hangzhou, China
| | - Henrik Junge
- Leibniz
Institute for Catalysis at the University of Rostock, Albert Einstein-Straße
29a, 18059 Rostock, Germany
| | - Matthias Beller
- Leibniz
Institute for Catalysis at the University of Rostock, Albert Einstein-Straße
29a, 18059 Rostock, Germany
| | - Stefan Lochbrunner
- Institute
of Physics, University of Rostock, Universitätsplatz 3, 18055 Rostock, Germany
| | - Ralf Ludwig
- Institute
of Chemistry, Department Physical Chemistry, University of Rostock, Dr. Lorenz-Weg 1, 18059 Rostock, Germany
- Leibniz
Institute for Catalysis at the University of Rostock, Albert Einstein-Straße
29a, 18059 Rostock, Germany
| | - Angelika Brückner
- Leibniz
Institute for Catalysis at the University of Rostock, Albert Einstein-Straße
29a, 18059 Rostock, Germany
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Karnahl M, Mejía E, Rockstroh N, Tschierlei S, Luo SP, Grabow K, Kruth A, Brüser V, Junge H, Lochbrunner S, Beller M. Photocatalytic Hydrogen Production with Copper Photosensitizer-Titanium Dioxide Composites. ChemCatChem 2013. [DOI: 10.1002/cctc.201300459] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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