1
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Ekstrøm ET, Pedersen J, Mikkelsen KV. Solvent-Induced Symmetry Breaking of the Photoinduced Charge Transfer Dynamics in the Bridged Perylene Dimer. J Phys Chem A 2023; 127:9601-9611. [PMID: 37931218 DOI: 10.1021/acs.jpca.3c04359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2023]
Abstract
The charge transfer dynamics of the bridged perylene dimer were investigated with the recently developed solvent coupling Redfield time propagation model. The results are compared with previous experimental findings to showcase the significance and applicability of the model. The charge transfer dynamics in vacuum showed that no breaking of the charge transfer direction symmetry occurred upon optical excitation, in perfect agreement with the experiment. Meanwhile, attractive solute-solvent interactions facilitated by the dipole moments of the polar solvents were observed to break the charge transfer direction symmetry. The conformational isomerism effect on the transfer dynamics manifested itself by promoting different transport channels upon solvation. Consequently, the solvent coupling Redfield time propagation model was indeed found to be able to quantitatively describe the charge transfer dynamics including exotic phenomena such as symmetry breaking of charge transfer direction.
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Affiliation(s)
- Ellen T Ekstrøm
- Department of Chemistry, University of Copenhagen, Copenhagen DK-2100, Denmark
| | - Jacob Pedersen
- Department of Chemistry, University of Copenhagen, Copenhagen DK-2100, Denmark
- Department of Chemistry, Technical University of Denmark, Kongens Lyngby DK-2800, Denmark
| | - Kurt V Mikkelsen
- Department of Chemistry, University of Copenhagen, Copenhagen DK-2100, Denmark
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2
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Rojas-Luna R, Castillo-Rodríguez M, Ruiz JR, Jiménez-Sanchidrián C, Esquivel D, Romero-Salguero FJ. Ru- and Ir-complex decorated periodic mesoporous organosilicas as sensitizers for artificial photosynthesis. Dalton Trans 2022; 51:18708-18721. [PMID: 36448984 DOI: 10.1039/d2dt03147g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A versatile and facile strategy based on an inverse electron demand Diels-Alder reaction between 5-norbornen-2-yltriethoxysilane and a tetrazine derivative has been established for the synthesis of a new triethoxysilane precursor containing dipyridylpyridazine units. Such a precursor has been incorporated into the mesostructure of an ethylene-bridged periodic mesoporous organosilica (PMO) material through a one-pot synthesis via a co-condensation method. Upon attachment of Ru- and Ir-complexes to the pendant N-chelating heterocyclic ligands, the resulting decorated PMOs have acted as photosensitizers in artificial photosynthetic systems. The deposition of Pt on these PMOs has allowed us to obtain efficient photocatalytic materials for the hydrogen evolution reaction as a result of electron transfer from the light harvesting Ru- and Ir-complexes to the supported Pt nanoparticles through methyl viologen as an electron relay. They have exhibited total turnover number values of 573 and 846, respectively, under visible light irradiation. The role played by each component and the stability of the photocatalytic systems have been discussed. The present approach paves the way to the synthesis of different materials with coordination sites capable of forming surface complexes to be applied as sensitizers and catalysts.
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Affiliation(s)
- Raúl Rojas-Luna
- Departamento de Química Orgánica, Instituto Químico para la Energía y el Medioambiente (IQUEMA), Facultad de Ciencias, Universidad de Córdoba, Campus de Rabanales, 14071 Córdoba, Spain.
| | - Miguel Castillo-Rodríguez
- Departamento de Física Aplicada, Radiología y Medicina Física, Universidad de Córdoba, Campus de Rabanales, 14071 Córdoba, Spain
| | - José R Ruiz
- Departamento de Química Orgánica, Instituto Químico para la Energía y el Medioambiente (IQUEMA), Facultad de Ciencias, Universidad de Córdoba, Campus de Rabanales, 14071 Córdoba, Spain.
| | - César Jiménez-Sanchidrián
- Departamento de Química Orgánica, Instituto Químico para la Energía y el Medioambiente (IQUEMA), Facultad de Ciencias, Universidad de Córdoba, Campus de Rabanales, 14071 Córdoba, Spain.
| | - Dolores Esquivel
- Departamento de Química Orgánica, Instituto Químico para la Energía y el Medioambiente (IQUEMA), Facultad de Ciencias, Universidad de Córdoba, Campus de Rabanales, 14071 Córdoba, Spain.
| | - Francisco J Romero-Salguero
- Departamento de Química Orgánica, Instituto Químico para la Energía y el Medioambiente (IQUEMA), Facultad de Ciencias, Universidad de Córdoba, Campus de Rabanales, 14071 Córdoba, Spain.
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3
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Forde A, Freixas VM, Fernandez-Alberti S, Neukirch AJ, Tretiak S. Charge-Transfer Luminescence in a Molecular Donor-Acceptor Complex: Computational Insights. J Phys Chem Lett 2022; 13:8755-8760. [PMID: 36099248 DOI: 10.1021/acs.jpclett.2c02479] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Donor-acceptor molecular complexes are a popular class of materials utilizing charge-transfer states for practical applications. A recent class of donor-acceptor dyads based on the fluorescent BODIPY functionalized with triphenylamine (TPA) shows the peculiar property of dual fluorescence. It is hypothesized that instead of the sensitized charge-transfer state being optically dark, it provides an additional bright radiative pathway. Here we use time-dependent density functional theory to characterize the energetic alignment of excitonic and charge-transfer states in a BODIPY-TPA molecular complex. We observe that using a long-range exchange corrected functional in combination with state-specific solvation scheme gives a qualitatively correct alignment of the exciton and charge-transfer states and an enhancement in oscillator strength for the equilibrium solvated charge-transfer state, in agreement with experiment. This work provides rationalization of charge-transfer state emission and provides a foundation to explore charge-transfer using ab initio excited-state nonadiabatic dynamics.
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Affiliation(s)
- Aaron Forde
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
- Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Victor M Freixas
- Departamento de Ciencia y Tecnologiia, Univresidad Nacional de Quilmes/CONICET, B1876BXD, Bernal, Argentina
| | | | - Amanda J Neukirch
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Sergei Tretiak
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
- Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
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4
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Ito A, Iwamura M, Sakuda E. Excited-state dynamics of luminescent transition metal complexes with metallophilic and donor–acceptor interactions. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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5
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Garai A, Villa M, Marchini M, Patra SK, Pain T, Mondal S, Ceroni P, Kar S. Synthesis, Structure, Photophysics, and Singlet Oxygen Sensitization by a Platinum(II) Complex of
Meso
‐Tetra‐Acenaphthyl Porphyrin. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100667] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Antara Garai
- School of Chemical Sciences National Institute of Science Education and Research (NISER) Bhubaneswar 752050 India
- Homi Bhabha National Institute Training School Complex, Anushakti Nagar Mumbai 400 094 India
| | - Marco Villa
- Department of Chemistry “G. Ciamician,” University of Bologna via Selmi 2 40126 Bologna Italy
| | - Marianna Marchini
- Department of Chemistry “G. Ciamician,” University of Bologna via Selmi 2 40126 Bologna Italy
| | - Sajal Kumar Patra
- School of Chemical Sciences National Institute of Science Education and Research (NISER) Bhubaneswar 752050 India
- Homi Bhabha National Institute Training School Complex, Anushakti Nagar Mumbai 400 094 India
| | - Tanmoy Pain
- School of Chemical Sciences National Institute of Science Education and Research (NISER) Bhubaneswar 752050 India
- Homi Bhabha National Institute Training School Complex, Anushakti Nagar Mumbai 400 094 India
| | - Sruti Mondal
- School of Chemical Sciences National Institute of Science Education and Research (NISER) Bhubaneswar 752050 India
- Homi Bhabha National Institute Training School Complex, Anushakti Nagar Mumbai 400 094 India
| | - Paola Ceroni
- Department of Chemistry “G. Ciamician,” University of Bologna via Selmi 2 40126 Bologna Italy
| | - Sanjib Kar
- School of Chemical Sciences National Institute of Science Education and Research (NISER) Bhubaneswar 752050 India
- Homi Bhabha National Institute Training School Complex, Anushakti Nagar Mumbai 400 094 India
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6
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Singh Z, Donnarumma PR, Majewski MB. Molecular Copper(I)-Copper(II) Photosensitizer-Catalyst Photoelectrode for Water Oxidation. Inorg Chem 2020; 59:12994-12999. [PMID: 32909755 DOI: 10.1021/acs.inorgchem.0c01670] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Copper(II)-based electrocatalysts for water oxidation in aqueous solution have been studied previously, but photodriving these systems still remains a challenge. In this work, a bis(diimine)copper(I)-based donor-chromophore-acceptor system is synthesized and applied as the light-harvesting component of a photoanode. This molecular assembly was integrated onto a zinc oxide nanowire surface, and upon photoexcitation, chronoamperometric studies reveal that the integrated triad can inject electrons directly into the conduction band of zinc oxide, generating oxidizing equivalents that are then transferred to a copper(II) water oxidation catalyst in aqueous solution, yielding O2 from water with a Faradaic efficiency of 76%.
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Affiliation(s)
- Zujhar Singh
- Department of Chemistry and Biochemistry and Centre for NanoScience Research Concordia University 7141 Sherbrooke Street West, Montreal, Quebec H4B 1R6, Canada
| | - P Rafael Donnarumma
- Department of Chemistry and Biochemistry and Centre for NanoScience Research Concordia University 7141 Sherbrooke Street West, Montreal, Quebec H4B 1R6, Canada
| | - Marek B Majewski
- Department of Chemistry and Biochemistry and Centre for NanoScience Research Concordia University 7141 Sherbrooke Street West, Montreal, Quebec H4B 1R6, Canada
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7
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Luo Y, Maloul S, Schönweiz S, Wächtler M, Streb C, Dietzek B. Yield-not only Lifetime-of the Photoinduced Charge-Separated State in Iridium Complex-Polyoxometalate Dyads Impact Their Hydrogen Evolution Reactivity. Chemistry 2020; 26:8045-8052. [PMID: 32237163 PMCID: PMC7383969 DOI: 10.1002/chem.202000982] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Indexed: 11/11/2022]
Abstract
Covalently linked photosensitizer-polyoxometalate (PS-POM) dyads are promising molecular systems for light-induced energy conversion processes, such as "solar" hydrogen generation. To date, very little is known of their fundamental photophysical properties which affect the catalytic reactivity and stability of the systems. PS-POM dyads often feature short-lived photoinduced charge-separated states, and the lifetimes of these states are considered crucial for the function of PS-POM dyads in molecular photocatalysis. Hence, strategies have been developed to extend the lifetimes of the photoinduced charge-separated states, either by tuning the PS photophysics or by tuning the POM redox properties. Recently, some of us reported PS-POM dyads based on cyclometalated IrIII complexes covalently linked to Anderson-type polyoxometalate. Distinct hydrogen evolution reactivity (HER) of the dyads was observed, which was tuned by varying the central metal ion M of the POMM (M=Mn3+ , Co3+ , Fe3+ ). In this manuscript, the photoinduced electron-transfer processes in the three Ir-POMM dyads are investigated to rationalize the underlying reasons for the differences in HER activity observed. We report that upon excitation of the IrIII complex, ultrafast (sub-ps) charge separation occurs, leading to different amounts of the charge-separated states (Ir.+ -POMM .- ) generated in the different dyads. However, in all dyads studied, the resulting Ir.+ -POMM .- species are short-lived (sub-ns) when compared to reference electron acceptors (e.g. porphyrins or fullerenes) reported in the literature. The reductive quenching of Ir.+ -POMM .- by a sacrificial donor, triethyl amine (1 m), to generate the intermediate Ir-POMM .- is estimated to be very efficient (70-80 %) for all dyads studied. Based on this analyses, we conclude that the yield instead of the lifetime of the Ir.+ -POMM .- charge-separated state determines the catalytic capacity of the dyads investigated. This new feature in the PS-POM photophysics could lead to new design criteria for the development of novel PS-POM dyads.
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Affiliation(s)
- Yusen Luo
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller-University Jena, Helmholtzweg 4, 07743, Jena, Germany.,Department Functional Interfaces, Leibniz Institute of Photonic Technology (IPHT), Albert-Einstein-Strasse 9, 07745, Jena, Germany
| | - Salam Maloul
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Stefanie Schönweiz
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Maria Wächtler
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller-University Jena, Helmholtzweg 4, 07743, Jena, Germany.,Department Functional Interfaces, Leibniz Institute of Photonic Technology (IPHT), Albert-Einstein-Strasse 9, 07745, Jena, Germany
| | - Carsten Streb
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Benjamin Dietzek
- Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller-University Jena, Helmholtzweg 4, 07743, Jena, Germany.,Department Functional Interfaces, Leibniz Institute of Photonic Technology (IPHT), Albert-Einstein-Strasse 9, 07745, Jena, Germany.,Center for Energy and Environmental Chemistry Jena (CEEC Jena), Friedrich-Schiller-University Jena, Philosophenweg 7a, 07743, Jena, Germany
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8
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Liu X, Su S, Zhu GY, Shu Y, Gao Q, Meng M, Cheng T, Liu CY. Making Use of the δ Electrons in K 4Mo 2(SO 4) 4 for Visible-Light-Induced Photocatalytic Hydrogen Production. ACS APPLIED MATERIALS & INTERFACES 2019; 11:24006-24017. [PMID: 31241882 DOI: 10.1021/acsami.9b03918] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Quadruply bonded dimolybdenum complexes with a σ2π4δ2 electronic configuration for the ground state have rich metal-centered photochemistry. An earlier study showed that stoichiometric or less amount of molecular hydrogen was produced upon irradiation by ultraviolet light (λ = 254 nm) of K4Mo2(SO4)4 in sulfuric acid solution, which was attributed to the reductive capability of the ππ* excited state. To make use of the δ electrons for visible-light-induced photocatalytic hydrogen evolution, a multicomponent heterogeneous photocatalytic system containing K4Mo2(SO4)4 photosensitizer, TiO2 electron relay, and MoS2 cocatalyst is designed and tested. With ascorbic acid added as a sacrificial reagent, irradiation by artificial sunlight (AM 1.5) on the reaction in 5 M H2SO4 has produced 13 400 μmol g-1 of molecular hydrogen (based on the Mo2 complex), which is 30 times higher than the hydrogen yield obtained from the reaction of bare K4Mo2(SO4)4 with H2SO4 under ultraviolet light irradiation. Further improvement of hydrogen evolution is achieved by addition of oxalic acid, along with an electron donor, which gives an additional 50% increase in H2 yield. Spectroscopic analyses indicate that, in this case, a junction between the Mo2 complex and TiO2 is built by the oxalate bridging ligand, which facilitates charge injection and separation from the Mo2 core. This Mo2-TiO2-MoS2 system has achieved a high hydrogen evolution rate up to 4570 μmol g-1 h-1. The efficiency of K4Mo2(SO4)4 as a metal-centered photosensitizer is also proved by parallel experiments with a dye chromophore, fluorescein, which presents comparable H2 yields and hydrogen evolution rates. Most importantly, in this study, detailed analyses illustrate that the photocatalytic cycle with hydrogen gas as an outcome of the reaction is established by involvement of the δδ* excited state generated by visible light irradiation. Therefore, this work shows the potential of quadruply bonded Mo2 complexes as photosensitizers for photocatalytic hydrogen evolution.
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Affiliation(s)
- Xiao Liu
- Department of Chemistry , Jinan University , 601 Huang-Pu Avenue West , Guangzhou 510632 , China
| | - Shaoyang Su
- Department of Chemistry , Jinan University , 601 Huang-Pu Avenue West , Guangzhou 510632 , China
| | - Guang Yuan Zhu
- Department of Chemistry , Jinan University , 601 Huang-Pu Avenue West , Guangzhou 510632 , China
| | - Yijin Shu
- Department of Chemistry , Jinan University , 601 Huang-Pu Avenue West , Guangzhou 510632 , China
| | - Qingsheng Gao
- Department of Chemistry , Jinan University , 601 Huang-Pu Avenue West , Guangzhou 510632 , China
| | - Miao Meng
- Department of Chemistry , Jinan University , 601 Huang-Pu Avenue West , Guangzhou 510632 , China
| | - Tao Cheng
- Department of Chemistry , Jinan University , 601 Huang-Pu Avenue West , Guangzhou 510632 , China
| | - Chun Y Liu
- Department of Chemistry , Jinan University , 601 Huang-Pu Avenue West , Guangzhou 510632 , China
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9
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Kobayashi F, Ohtani R, Teraoka S, Yoshida M, Kato M, Zhang Y, Lindoy LF, Hayami S, Nakamura M. Phosphorescence at Low Temperature by External Heavy-Atom Effect in Zinc(II) Clusters. Chemistry 2019; 25:5875-5879. [PMID: 30860310 DOI: 10.1002/chem.201900343] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 02/08/2019] [Indexed: 11/11/2022]
Abstract
Luminescent ZnII clusters [Zn4 L4 (μ3 -OMe)2 X2 ] (X=SCN (1), Cl (2), Br (3)) and [Zn7 L6 (μ3 -OMe)2 (μ3 -OH)4 ]Y2 (Y=I- (4), ClO4 - (5)), HL=methyl-3-methoxysalicylate, exhibiting blue fluorescence at room temperature (λmax =416≈429 nm, Φem =0.09-0.36) have been synthesised and investigated in detail. In one case the external heavy-atom effect (EHE) arising the presence of iodide counter anions yielded phosphorescence with a long emission lifetime (λmax =520 nm, τ=95.3 ms) at 77 K. Single-crystal X-ray structural analysis and time-dependent density-functional theory (TD-DFT) calculations revealed that their emission origin was attributed to the fluorescence from the singlet ligand-centred (1 LC) excited state, and the phosphorescence observed in 4 was caused by the EHE of counter anions having strong CH-I interactions.
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Affiliation(s)
- Fumiya Kobayashi
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
| | - Ryo Ohtani
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
| | - Saki Teraoka
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
| | - Masaki Yoshida
- Department of Chemistry, Faculty of Science, Hokkaido University, North-10 West-8, Kita-ku, Sapporo, Hokkaido, 060-0810, Japan
| | - Masako Kato
- Department of Chemistry, Faculty of Science, Hokkaido University, North-10 West-8, Kita-ku, Sapporo, Hokkaido, 060-0810, Japan
| | - Yingjie Zhang
- Australian Nuclear Science and Technology Organization, Locked Bag 2001, Kirrawee DC, NSW, 2232, Australia
| | - Leonard F Lindoy
- School of Chemistry, The University of Sydney, NSW, 2006, Australia
| | - Shinya Hayami
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan.,Institute of Pulsed Power Science (IPPS), Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
| | - Masaaki Nakamura
- Department of Chemistry, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto, 860-8555, Japan
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10
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Keller SG, Pannwitz A, Schwizer F, Klehr J, Wenger OS, Ward TR. Light-driven electron injection from a biotinylated triarylamine donor to [Ru(diimine)3](2+)-labeled streptavidin. Org Biomol Chem 2018; 14:7197-201. [PMID: 27411288 DOI: 10.1039/c6ob01273f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Electron transfer from a biotinylated electron donor to photochemically generated Ru(iii) complexes covalently anchored to streptavidin is demonstrated by means of time-resolved laser spectroscopy. Through site-selective mutagenesis, a single cysteine residue was engineered at four different positions on streptavidin, and a Ru(ii) tris-diimine complex was then bioconjugated to the exposed cysteines. A biotinylated triarylamine electron donor was added to the Ru(ii)-modified streptavidins to afford dyads localized within a streptavidin host. The resulting systems were subjected to electron transfer studies. In some of the explored mutants, the phototriggered electron transfer between triarylamine and Ru(iii) is complete within 10 ns, thus highlighting the potential of such artificial metalloenzymes to perform photoredox catalysis.
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Affiliation(s)
- Sascha G Keller
- Department of Chemistry, University of Basel, Spitalstrasse 51, CH-4056 Basel, Switzerland.
| | - Andrea Pannwitz
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056 Basel, Switzerland.
| | - Fabian Schwizer
- Department of Chemistry, University of Basel, Spitalstrasse 51, CH-4056 Basel, Switzerland.
| | - Juliane Klehr
- Department of Chemistry, University of Basel, Spitalstrasse 51, CH-4056 Basel, Switzerland.
| | - Oliver S Wenger
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056 Basel, Switzerland.
| | - Thomas R Ward
- Department of Chemistry, University of Basel, Spitalstrasse 51, CH-4056 Basel, Switzerland.
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11
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Mede T, Jäger M, Schubert US. "Chemistry-on-the-complex": functional Ru II polypyridyl-type sensitizers as divergent building blocks. Chem Soc Rev 2018; 47:7577-7627. [PMID: 30246196 DOI: 10.1039/c8cs00096d] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Ruthenium polypyridyl type complexes are potent photoactive compounds, and have found - among others - a broad range of important applications in the fields of biomedical diagnosis and phototherapy, energy conversion schemes such as dye-sensitized solar cells (DSSCs) and molecular assemblies for tailored photo-initiated processes. In this regard, the linkage of RuII polypyridyl-type complexes with specific functional moieties is highly desirable to enhance their inherent photophysical properties, e.g., with a targeting function to achieve cell selectivity, or with a dye or redox-active subunits for energy- and electron-transfer. However, the classical approach of performing ligand syntheses first and the formation of Ru complexes in the last steps imposes synthetic limitations with regard to tolerating functional groups or moieties as well as requiring lengthy convergent routes. Alternatively, the diversification of Ru complexes after coordination (termed "chemistry-on-the-complex") provides an elegant complementary approach. In addition to the Click chemistry concept, the rapidly developing synthesis and purification methodologies permit the preparation of Ru conjugates via amidation, alkylation and cross-coupling reactions. In this regard, recent developments in chromatography shifted the limits of purification, e.g., by using new commercialized surface-modified silica gels and automated instrumentation. This review provides detailed insights into applying the "chemistry-on-the-complex" concept, which is believed to stimulate the modular preparation of unpreceded molecular assemblies as well as functional materials based on Ru-based building blocks, including combinatorial approaches.
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Affiliation(s)
- Tina Mede
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany.
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12
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Yuan YJ, Yu ZT, Chen DQ, Zou ZG. Metal-complex chromophores for solar hydrogen generation. Chem Soc Rev 2018; 46:603-631. [PMID: 27808300 DOI: 10.1039/c6cs00436a] [Citation(s) in RCA: 208] [Impact Index Per Article: 34.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Solar H2 generation from water has been intensively investigated as a clean method to convert solar energy into hydrogen fuel. During the past few decades, many studies have demonstrated that metal complexes can act as efficient photoactive materials for photocatalytic H2 production. Here, we review the recent progress in the application of metal-complex chromophores to solar-to-H2 conversion, including metal-complex photosensitizers and supramolecular photocatalysts. A brief overview of the fundamental principles of photocatalytic H2 production is given. Then, different metal-complex photosensitizers and supramolecular photocatalysts are introduced in detail, and the most important factors that strictly determine their photocatalytic performance are also discussed. Finally, we illustrate some challenges and opportunities for future research in this promising area.
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Affiliation(s)
- Yong-Jun Yuan
- National Laboratory of Solid State Microstructures and Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory for Nano Technology, College of Engineering and Applied Science, Nanjing University, Nanjing 210093, P. R. China. and College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310018, P. R. China.
| | - Zhen-Tao Yu
- National Laboratory of Solid State Microstructures and Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory for Nano Technology, College of Engineering and Applied Science, Nanjing University, Nanjing 210093, P. R. China.
| | - Da-Qin Chen
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310018, P. R. China.
| | - Zhi-Gang Zou
- National Laboratory of Solid State Microstructures and Collaborative Innovation Center of Advanced Microstructures, Jiangsu Key Laboratory for Nano Technology, College of Engineering and Applied Science, Nanjing University, Nanjing 210093, P. R. China.
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13
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Schlotthauer T, Schroot R, Glover S, Hammarström L, Jäger M, Schubert US. A multidonor-photosensitizer-multiacceptor triad for long-lived directional charge separation. Phys Chem Chem Phys 2018; 19:28572-28578. [PMID: 29034949 DOI: 10.1039/c7cp05593e] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The modular assembly of a directional photoredox-active multidonor-photosensitizer-multiacceptor (Dn-P-Am) architecture is presented. The triad assembly features a central Ru(ii) sensitizer equipped with pendant polymer chains consisting of multiple triarylamine (pTARA) and naphthalene diimide (pNDI) units, respectively. Upon excitation, the efficient formation (>96%) of charge separation (CS) was observed featuring similar CS lifetimes (400 ns) as related molecular triads. In contrast, a significant additional longer-lived CS component (2400 ns, 30%) is observed indicating multiple contributing pathways.
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Affiliation(s)
- Tina Schlotthauer
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany.
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14
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Hayes D, Kohler L, Hadt RG, Zhang X, Liu C, Mulfort KL, Chen LX. Excited state electron and energy relays in supramolecular dinuclear complexes revealed by ultrafast optical and X-ray transient absorption spectroscopy. Chem Sci 2018; 9:860-875. [PMID: 29629153 PMCID: PMC5873173 DOI: 10.1039/c7sc04055e] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Accepted: 11/14/2017] [Indexed: 01/19/2023] Open
Abstract
The kinetics of photoinduced electron and energy transfer in a family of tetrapyridophenazine-bridged heteroleptic homo- and heterodinuclear copper(i) bis(phenanthroline)/ruthenium(ii) polypyridyl complexes were studied using ultrafast optical and multi-edge X-ray transient absorption spectroscopies. This work combines the synthesis of heterodinuclear Cu(i)-Ru(ii) analogs of the homodinuclear Cu(i)-Cu(i) targets with spectroscopic analysis and electronic structure calculations to first disentangle the dynamics at individual metal sites by taking advantage of the element and site specificity of X-ray absorption and theoretical methods. The excited state dynamical models developed for the heterodinuclear complexes are then applied to model the more challenging homodinuclear complexes. These results suggest that both intermetallic charge and energy transfer can be observed in an asymmetric dinuclear copper complex in which the ground state redox potentials of the copper sites are offset by only 310 meV. We also demonstrate the ability of several of these complexes to effectively and unidirectionally shuttle energy between different metal centers, a property that could be of great use in the design of broadly absorbing and multifunctional multimetallic photocatalysts. This work provides an important step toward developing both a fundamental conceptual picture and a practical experimental handle with which synthetic chemists, spectroscopists, and theoreticians may collaborate to engineer cheap and efficient photocatalytic materials capable of performing coulombically demanding chemical transformations.
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Affiliation(s)
- Dugan Hayes
- Chemical Sciences and Engineering Division , Argonne National Laboratory , Argonne , IL 60439 , USA . ; ;
| | - Lars Kohler
- Chemical Sciences and Engineering Division , Argonne National Laboratory , Argonne , IL 60439 , USA . ; ;
| | - Ryan G Hadt
- Chemical Sciences and Engineering Division , Argonne National Laboratory , Argonne , IL 60439 , USA . ; ;
| | - Xiaoyi Zhang
- X-ray Science Division , Argonne National Laboratory , Argonne , IL 60439 , USA
| | - Cunming Liu
- X-ray Science Division , Argonne National Laboratory , Argonne , IL 60439 , USA
| | - Karen L Mulfort
- Chemical Sciences and Engineering Division , Argonne National Laboratory , Argonne , IL 60439 , USA . ; ;
| | - Lin X Chen
- Chemical Sciences and Engineering Division , Argonne National Laboratory , Argonne , IL 60439 , USA . ; ;
- Department of Chemistry , Northwestern University , Evanston , IL 60208 , USA
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15
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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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16
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Keller SG, Pannwitz A, Mallin H, Wenger OS, Ward TR. Streptavidin as a Scaffold for Light-Induced Long-Lived Charge Separation. Chemistry 2017; 23:18019-18024. [PMID: 29024136 DOI: 10.1002/chem.201703885] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Indexed: 01/03/2023]
Abstract
Long-lived photo-driven charge separation is demonstrated by assembling a triad on a protein scaffold. For this purpose, a biotinylated triarylamine was added to a RuII -streptavidin conjugate bearing a methyl viologen electron acceptor covalently linked to the N-terminus of streptavidin. To improve the rate and lifetime of the electron transfer, a negative patch consisting of up to three additional negatively charged amino acids was engineered through mutagenesis close to the biotin-binding pocket of streptavidin. Time-resolved laser spectroscopy revealed that the covalent attachment and the negative patch were beneficial for charge separation within the streptavidin hosted triad; the charge separated state was generated within the duration of the excitation laser pulse, and lifetimes up to 3120 ns could be achieved with the optimized supramolecular triad.
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Affiliation(s)
- Sascha G Keller
- Department of Chemistry, University of Basel, Mattenstrasse 24a, CH-4002, Basel, Switzerland
| | - Andrea Pannwitz
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056, Basel, Switzerland
| | - Hendrik Mallin
- Department of Chemistry, University of Basel, Mattenstrasse 24a, CH-4002, Basel, Switzerland
| | - Oliver S Wenger
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056, Basel, Switzerland
| | - Thomas R Ward
- Department of Chemistry, University of Basel, Mattenstrasse 24a, CH-4002, Basel, Switzerland
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17
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Schroot R, Schlotthauer T, Dietzek B, Jäger M, Schubert US. Extending Long-lived Charge Separation Between Donor and Acceptor Blocks in Novel Copolymer Architectures Featuring a Sensitizer Core. Chemistry 2017; 23:16484-16490. [DOI: 10.1002/chem.201704180] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Indexed: 02/01/2023]
Affiliation(s)
- Robert Schroot
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstraße 10 07743 Jena Germany
- Center for Energy and Environmental Chemistry Jena (CEEC Jena); Friedrich Schiller University Jena; Philosophenweg 7a 07743 Jena Germany
| | - Tina Schlotthauer
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstraße 10 07743 Jena Germany
- Center for Energy and Environmental Chemistry Jena (CEEC Jena); Friedrich Schiller University Jena; Philosophenweg 7a 07743 Jena Germany
| | - Benjamin Dietzek
- Center for Energy and Environmental Chemistry Jena (CEEC Jena); Friedrich Schiller University Jena; Philosophenweg 7a 07743 Jena Germany
- Institute for Physical Chemistry and Abbe Center of Photonics (ACP); Friedrich Schiller University Jena; Helmholtzweg 4 07743 Jena Germany
- Leibniz Institute for Photonic Technology (IPHT); Albert-Einstein-Straße 9 07743 Jena Germany
| | - Michael Jäger
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstraße 10 07743 Jena Germany
- Center for Energy and Environmental Chemistry Jena (CEEC Jena); Friedrich Schiller University Jena; Philosophenweg 7a 07743 Jena Germany
| | - Ulrich S. Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC); Friedrich Schiller University Jena; Humboldtstraße 10 07743 Jena Germany
- Center for Energy and Environmental Chemistry Jena (CEEC Jena); Friedrich Schiller University Jena; Philosophenweg 7a 07743 Jena Germany
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18
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Queyriaux N, Andreiadis ES, Torelli S, Pecaut J, Veldkamp BS, Margulies EA, Wasielewski MR, Chavarot-Kerlidou M, Artero V. CuAAC-based assembly and characterization of a ruthenium-copper dyad containing a diimine-dioxime ligand framework. Faraday Discuss 2017; 198:251-261. [PMID: 28276542 DOI: 10.1039/c6fd00204h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The design of molecular dyads combining a light-harvesting unit with an electroactive centre is highly demanded in the field of artificial photosynthesis. The versatile Copper-catalyzed Azide-Alkyne Cycloaddition (CuAAC) procedure was employed to assemble a ruthenium tris-diimine unit to an unprecedented azide-substituted copper diimine-dioxime moiety. The resulting RuIICuII dyad 4 was characterized by electrochemistry, 1H NMR, EPR, UV-visible absorption, steady-state fluorescence and transient absorption spectroscopies. Photoinduced electron transfer from the ruthenium to the copper centre upon light-activation in the presence of a sacrificial electron donor was established thanks to EPR-monitored photolysis experiments, opening interesting perspectives for photocatalytic applications.
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Affiliation(s)
- Nicolas Queyriaux
- Laboratoire de Chimie et Biologie des Métaux, Univ. Grenoble Alpes, CNRS UMR 5249, CEA, 17 rue des martyrs, F-38054, Grenoble Cedex 9, France.
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19
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Mondal D, Bar M, Mukherjee S, Baitalik S. Design of Ru(II) Complexes Based on Anthraimidazoledione-Functionalized Terpyridine Ligand for Improvement of Room-Temperature Luminescence Characteristics and Recognition of Selective Anions: Experimental and DFT/TD-DFT Study. Inorg Chem 2016; 55:9707-9724. [PMID: 27617341 DOI: 10.1021/acs.inorgchem.6b01483] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
In this work we report synthesis and characterization of three rigid and linear rodlike monometallic Ru(II) complexes based on a terpyridine ligand tightly connected to 9,10-anthraquinone electron-acceptor unit through phenyl-imidazole spacer. The motivation of designing these complexes is to enhance their excited-state lifetimes at room temperature. Interestingly it is found that all three complexes exhibit luminescence at room temperature with excited-state lifetimes in the range of 1.6-52.8 ns, depending upon the coligand as well as the solvent. Temperature-dependent luminescence investigations indicate that the energy gap between the emitting 3MLCT state and nonemitting metal-centered state 3MC in the complexes increased enormously compared with parent [Ru(tpy)2]2+. In addition, by taking advantage of the imidazole NH proton(s), which became appreciably acidic upon combined effect of electron accepting anthraquinone moiety as well as metal ion coordination, we also examined anion recognition and sensing behaviors of the complexes in organic, mixed aqueous-organic as well as in solid medium through different optical channels such as absorption, steady-state and time-resolved emission, and 1H NMR spectroscopic techniques. In conjunction with the experiment, computational investigation was also employed to examine the electronic structures of the complexes and accurate assignment of experimentally observed spectral and redox behaviors.
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Affiliation(s)
- Debiprasad Mondal
- Department of Chemistry, Inorganic Chemistry Section, Jadavpur University , Kolkata 700032, India
| | - Manoranjan Bar
- Department of Chemistry, Inorganic Chemistry Section, Jadavpur University , Kolkata 700032, India
| | - Shruti Mukherjee
- Department of Chemistry, Inorganic Chemistry Section, Jadavpur University , Kolkata 700032, India
| | - Sujoy Baitalik
- Department of Chemistry, Inorganic Chemistry Section, Jadavpur University , Kolkata 700032, India
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20
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Boll R, Erk B, Coffee R, Trippel S, Kierspel T, Bomme C, Bozek JD, Burkett M, Carron S, Ferguson KR, Foucar L, Küpper J, Marchenko T, Miron C, Patanen M, Osipov T, Schorb S, Simon M, Swiggers M, Techert S, Ueda K, Bostedt C, Rolles D, Rudenko A. Charge transfer in dissociating iodomethane and fluoromethane molecules ionized by intense femtosecond X-ray pulses. STRUCTURAL DYNAMICS (MELVILLE, N.Y.) 2016; 3:043207. [PMID: 27051675 PMCID: PMC4808069 DOI: 10.1063/1.4944344] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Accepted: 03/04/2016] [Indexed: 05/07/2023]
Abstract
Ultrafast electron transfer in dissociating iodomethane and fluoromethane molecules was studied at the Linac Coherent Light Source free-electron laser using an ultraviolet-pump, X-ray-probe scheme. The results for both molecules are discussed with respect to the nature of their UV excitation and different chemical properties. Signatures of long-distance intramolecular charge transfer are observed for both species, and a quantitative analysis of its distance dependence in iodomethane is carried out for charge states up to I(21+). The reconstructed critical distances for electron transfer are in good agreement with a classical over-the-barrier model and with an earlier experiment employing a near-infrared pump pulse.
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Affiliation(s)
| | - Benjamin Erk
- Deutsches Elektronen-Synchrotron (DESY) , 22607 Hamburg, Germany
| | - Ryan Coffee
- SLAC National Accelerator Laboratory , Menlo Park, California 94025, USA
| | - Sebastian Trippel
- Center for Free-Electron Laser Science, DESY , 22607 Hamburg, Germany
| | | | - Cédric Bomme
- Deutsches Elektronen-Synchrotron (DESY) , 22607 Hamburg, Germany
| | - John D Bozek
- SLAC National Accelerator Laboratory , Menlo Park, California 94025, USA
| | - Mitchell Burkett
- J.R. Macdonald Laboratory, Kansas State University , Manhattan, Kansas 66506, USA
| | - Sebastian Carron
- SLAC National Accelerator Laboratory , Menlo Park, California 94025, USA
| | - Ken R Ferguson
- SLAC National Accelerator Laboratory , Menlo Park, California 94025, USA
| | - Lutz Foucar
- Max Planck Institute for Medical Research , 69120 Heidelberg, Germany
| | | | - Tatiana Marchenko
- Sorbonne Universités , UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matiere et Rayonnement, F-75005 Paris, France
| | | | | | - Timur Osipov
- SLAC National Accelerator Laboratory , Menlo Park, California 94025, USA
| | - Sebastian Schorb
- SLAC National Accelerator Laboratory , Menlo Park, California 94025, USA
| | - Marc Simon
- Sorbonne Universités , UPMC Univ Paris 06, CNRS, UMR 7614, Laboratoire de Chimie Physique-Matiere et Rayonnement, F-75005 Paris, France
| | - Michelle Swiggers
- SLAC National Accelerator Laboratory , Menlo Park, California 94025, USA
| | | | - Kiyoshi Ueda
- IMRAM, Tohoku University , 980-8577 Sendai, Japan
| | | | | | - Artem Rudenko
- J.R. Macdonald Laboratory, Kansas State University , Manhattan, Kansas 66506, USA
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21
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Design of Ruthenium Biimidazole-Anthraquinone Dyads to Demonstrate Photoinduced Electron Transfer: Combined Experimental and DFT/TD-DFT Investigations. ChemistrySelect 2016. [DOI: 10.1002/slct.201600352] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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22
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Bar M, Maity D, Das S, Baitalik S. Demonstration of intramolecular energy transfer in asymmetric bimetallic ruthenium(ii) complexes. Dalton Trans 2016; 45:17241-17253. [DOI: 10.1039/c6dt03250h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Asymmetric bimetallic Ru(ii) complexes exhibit photo-induced intramolecular energy transfer with rate constant values on the order of 107 s−1.
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Affiliation(s)
- Manoranjan Bar
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata 700032
- India
| | - Dinesh Maity
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata 700032
- India
| | - Shyamal Das
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata 700032
- India
| | - Sujoy Baitalik
- Department of Chemistry
- Inorganic Chemistry Section
- Jadavpur University
- Kolkata 700032
- India
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23
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Sandroni M, Pellegrin Y, Odobel F. Heteroleptic bis-diimine copper(I) complexes for applications in solar energy conversion. CR CHIM 2016. [DOI: 10.1016/j.crci.2015.06.008] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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24
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Ultrafast Spectroscopy of Photonic Materials. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES INDIA SECTION A-PHYSICAL SCIENCES 2015. [DOI: 10.1007/s40010-015-0253-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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25
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Büldt LA, Prescimone A, Neuburger M, Wenger OS. Photoredox Properties of Homoleptic d6Metal Complexes with the Electron-Rich 4,4′,5,5′-Tetramethoxy-2,2′-bipyridine Ligand. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500670] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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26
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Klein JH, Schmidt D, Steiner UE, Lambert C. Complete Monitoring of Coherent and Incoherent Spin Flip Domains in the Recombination of Charge-Separated States of Donor-Iridium Complex-Acceptor Triads. J Am Chem Soc 2015; 137:11011-21. [DOI: 10.1021/jacs.5b04868] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Johannes H. Klein
- Wilhelm
Conrad Röntgen Research Center for Complex Material Systems,
Würzburg, Center for Nanosystems Chemistry, Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - David Schmidt
- Wilhelm
Conrad Röntgen Research Center for Complex Material Systems,
Würzburg, Center for Nanosystems Chemistry, Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | | | - Christoph Lambert
- Wilhelm
Conrad Röntgen Research Center for Complex Material Systems,
Würzburg, Center for Nanosystems Chemistry, Institut für Organische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
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27
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Chen J, Wenger OS. Fluoride binding to an organoboron wire controls photoinduced electron transfer. Chem Sci 2015; 6:3582-3592. [PMID: 29511520 PMCID: PMC5659175 DOI: 10.1039/c5sc00964b] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Accepted: 04/20/2015] [Indexed: 12/28/2022] Open
Abstract
We demonstrate that the rates for long-range electron transfer can be controlled actively by tight anion binding to a rigid rod-like molecular bridge. Electron transfer from a triarylamine donor to a photoexcited Ru(bpy)32+ acceptor (bpy = 2,2'-bipyridine) across a 2,5-diboryl-1,4-phenylene bridge occurs within less than 10 ns in CH2Cl2 at 22 °C. Fluoride anions bind with high affinity to the organoboron bridge due to strong Lewis base/Lewis acid interactions, and this alters the electronic structure of the bridge drastically. Consequently, a large tunneling barrier is imposed on photoinduced electron transfer from the triarylamine to the Ru(bpy)32+ complex and hence this process occurs more than two orders of magnitude more slowly, despite the fact that its driving force is essentially unaffected by fluoride addition. Electron transfer rates in proteins could potentially be regulated via a similar fundamental principle, because interactions between charged amino acid side chains and counter-ions can modulate electronic couplings between distant redox partners. In artificial donor-bridge-acceptor compounds, external stimuli have been employed frequently to control electron transfer rates, but the approach of exploiting strong Lewis acid/Lewis base interactions to regulate the tunneling barrier height imposed by a rigid rod-like molecular bridge is conceptually novel and broadly applicable, because it is largely independent of the donor and the acceptor, and because the effect is not based on a change of the driving-force for electron transfer. The principle demonstrated here can potentially be used to switch between conducting and insulating states of molecular wires between electrodes.
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Affiliation(s)
- Jing Chen
- Department of Chemistry , University of Basel , St. Johanns-Ring 19 , CH-4056 Basel , Switzerland .
- Xiamen Institute of Rare Earth Materials , Chinese Academy of Sciences , Xiamen 361021 , People's Republic of China
- Key Laboratory of Design and Assembly of Functional Nanostructures , Fujian Provincial Key Laboratory of Nanomaterials , Fujian Institute of Research on the Structure of Matter , Chinese Academy of Sciences , People's Republic of China
| | - Oliver S Wenger
- Department of Chemistry , University of Basel , St. Johanns-Ring 19 , CH-4056 Basel , Switzerland .
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28
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Cyclometallated ruthenium(II) carbonyl complexes with 1-pyrenaldehyde 4-R-3-thiosemicarbazones: Regioselective ruthenation of the 1-pyrenyl group. J CHEM SCI 2015. [DOI: 10.1007/s12039-015-0812-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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29
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Preiß J, Jäger M, Rau S, Dietzek B, Popp J, Martínez T, Presselt M. How Does Peripheral Functionalization of Ruthenium(II)-Terpyridine Complexes Affect Spatial Charge Redistribution after Photoexcitation at the Franck-Condon Point? Chemphyschem 2015; 16:1395-404. [DOI: 10.1002/cphc.201500223] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Indexed: 02/06/2023]
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30
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Ito A, Fang Z, Brennaman MK, Meyer TJ. Long-range photoinduced electron transfer dynamics in rigid media. Phys Chem Chem Phys 2014; 16:4880-91. [PMID: 24473124 DOI: 10.1039/c3cp54801e] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
In semi-rigid PEG-DMA550 films with added reductive quenchers, electron transfer quenching of the metal-to-ligand charge transfer excited state(s) of [Ru(bpy)3](2+) (bpy = 2,2'-bipyridine) occurs by both rapid, fixed-site, and slow, diffusional, quenching processes. Stern-Volmer analysis of diffusional quenching reveals diffusion-controlled quenching both in the fluid and film with the latter greatly inhibited by the high viscosity of the medium. The data for fixed-site quenching are consistent with electron tunneling with the expected exponential distance dependence. Based on this analysis long-range electron transfer occurs with a distance attenuation factor β of ∼0.47 Å(-1) with a notable decrease, β = 0.16 Å(-1), when the quencher is incorporated into the PEG backbone. Fixed-site electron transfer quenching varies with driving force. Back electron transfer is complex, as expected for a distribution of fixed sites, and varies with power law kinetics.
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Affiliation(s)
- Akitaka Ito
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.
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31
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Henderson J, Kubiak CP. Photoinduced Mixed Valency in Zinc Porphyrin Dimer of Triruthenium Cluster Dyads. Inorg Chem 2014; 53:11298-306. [DOI: 10.1021/ic501889u] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Jane Henderson
- Department of Chemistry and Biochemistry, University of California—San Diego, 9500 Gilman Drive MC 0358, La Jolla, California 92093, United States
| | - Clifford P. Kubiak
- Department of Chemistry and Biochemistry, University of California—San Diego, 9500 Gilman Drive MC 0358, La Jolla, California 92093, United States
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32
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Spettel KE, Damrauer NH. Synthesis, electrochemical characterization, and photophysical studies of structurally tuned aryl-substituted terpyridyl ruthenium(II) complexes. J Phys Chem A 2014; 118:10649-62. [PMID: 25182073 DOI: 10.1021/jp508145w] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Synthesis, electrochemical potentials, static emission, and temperature-dependent excited-state lifetimes of several 4'-aryl-substituted terpyridyl complexes of ruthenium(II) are reported. Synthetic tuning is explored within three conceptual series of complexes. The first series explores the impact of introducing a strong σ-donating 4,4',4″-tri-tert-butyl-2,2':6',2″-terpyridine (tbtpy) opposite to an arylated terpyridine ligand 4'-(4-methylphenyl)-2,2':6',2″-terpyridine (ttpy). It is found that (3)MLCT (triplet metal-to-ligand charge-transfer state) stabilization concomitant with (3)MC (triplet metal-centered state) destabilization in the heteroleptic parent complex [Ru(ttpy)(tbtpy)](2+) leads to an extended excited-state lifetime relative to the structurally related bis-homoleptic species [Ru(ttpy)2](2+). The second series explores the impact of introducing a carboxylic acid or a methyl ester moiety at the para-position of the arylterpyridyl ligand (R1 = R2 = H) within heteroleptic complexes as a platform for future semiconductor attachment studies. This substitution leads to further lifetime enhancements, understood as arising from (3)MLCT stabilization. Such complexes are referred to as [Ru(1)(tbtpy)](2+) (for the acid at R3) and [Ru(1')(tbtpy)](2+) (for the ester at R3). In the final series, methyl substituents are sequentially added at the R1 and R2 positions for both the acid ([Ru(2)(tbtpy)](2+) and [Ru(3)(tbtpy)](2+)) and ester ([Ru(2')(tbtpy)](2+) and [Ru(3')(tbtpy)](2+)) analogues to eventually explore dynamical electron transfer coupling at dye/semiconductor interfaces. In these complexes, sequential addition of steric bulk decreases excited state lifetimes. This can be understood to arise primarily from the increase of the (3)MLCT level, as excited-state electron delocalization is limited by inter-ring twisting in the lower-energy arylated ligand. The introduction of a dimethylated sterically encumbered ligand lead to a notable 14-fold increase in knr from [Ru(1')(tbtpy)](2+) to [Ru(3')(tbtpy)](2+) (or [Ru(1)(tbtpy)](2+) to [Ru(3)(tbtpy)](2+)).
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Affiliation(s)
- Karen E Spettel
- Department of Chemistry and Biochemistry, University of Colorado-Boulder , Boulder, Colorado 80309, United States
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33
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Lee SH, Chan CTL, Wong KMC, Lam WH, Kwok WM, Yam VWW. Synthesis and photoinduced electron transfer in platinum(ii) bis(N-(4-ethynylphenyl)carbazole)bipyridine fullerene complexes. Dalton Trans 2014; 43:17624-34. [DOI: 10.1039/c4dt01397b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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34
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Towards the development of functionalized polypyridine ligands for Ru(II) complexes as photosensitizers in dye-sensitized solar cells (DSSCs). Molecules 2014; 19:12421-60. [PMID: 25153864 PMCID: PMC6271818 DOI: 10.3390/molecules190812421] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 08/04/2014] [Accepted: 08/12/2014] [Indexed: 11/24/2022] Open
Abstract
A number of novel ruthenium(II) polypyridine complexes have been designed and synthesized for use as photosensitizers in dye-sensitized solar cells (DSSCs) due to their rich photophysical properties such as intense absorption, long-lived lifetimes, high emission quantum yields and unique redox characteristics. Many of these complexes exhibit photophysical behavior that can be readily controlled through a careful choice of ligands and/or substituents. With this perspective, we review the design and general synthetic methods of some polypyridine ligands based on bipyridine, phenanthroline, terpyridine and quaterpyridine with/without anchoring groups with a view to correlate functionality of ligand structures with the observed photophysical, electroredox and power conversion efficiency of some examples of Ru(II) polypyridyl complexes that have been reported and particularly used in the DSSCs applications. The main interest, however, is focused on showing the development of new polypyridine ligand materials containing long-range electron transfer motifs such as the alkenyl, alkynyl and polyaromatic donor functionalities.
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35
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Lee SH, Chan CTL, Wong KMC, Lam WH, Kwok WM, Yam VWW. Design and Synthesis of Bipyridine Platinum(II) Bisalkynyl Fullerene Donor–Chromophore–Acceptor Triads with Ultrafast Charge Separation. J Am Chem Soc 2014; 136:10041-52. [DOI: 10.1021/ja5040073] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Sai-Ho Lee
- Department
of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P.R. China
| | - Chris Tsz-Leung Chan
- Department
of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong
Kong, P.R. China
| | - Keith Man-Chung Wong
- Department
of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P.R. China
| | - Wai Han Lam
- Department
of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P.R. China
| | - Wai-Ming Kwok
- Department
of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong
Kong, P.R. China
| | - Vivian Wing-Wah Yam
- Department
of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P.R. China
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36
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Cai JG, Yu ZT, Yuan YJ, Li F, Zou ZG. Dinuclear Iridium(III) Complexes Containing Bibenzimidazole and Their Application to Water Photoreduction. ACS Catal 2014. [DOI: 10.1021/cs500296s] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Jian-Guang Cai
- National
Laboratory for Infrared Physics, Chinese Academy of Sciences; Eco-Materials
and Renewable Energy Research Center, Department of Materials Science
and Engineering, Nanjing University, Kunshan Innovation Institute of Nanjing University, No. 22, Hankou Road, Nanjing, Jiangsu 210093, P. R. China
- School
of Chemical Engineering, Nanjing University of Science and Technology, No. 200, Xiaolingwei Street, Nanjing, Jiangsu 210094, P. R. China
| | - Zhen-Tao Yu
- National
Laboratory for Infrared Physics, Chinese Academy of Sciences; Eco-Materials
and Renewable Energy Research Center, Department of Materials Science
and Engineering, Nanjing University, Kunshan Innovation Institute of Nanjing University, No. 22, Hankou Road, Nanjing, Jiangsu 210093, P. R. China
| | - Yong-Jun Yuan
- National
Laboratory for Infrared Physics, Chinese Academy of Sciences; Eco-Materials
and Renewable Energy Research Center, Department of Materials Science
and Engineering, Nanjing University, Kunshan Innovation Institute of Nanjing University, No. 22, Hankou Road, Nanjing, Jiangsu 210093, P. R. China
| | - Feng Li
- School
of Chemical Engineering, Nanjing University of Science and Technology, No. 200, Xiaolingwei Street, Nanjing, Jiangsu 210094, P. R. China
| | - Zhi-Gang Zou
- National
Laboratory for Infrared Physics, Chinese Academy of Sciences; Eco-Materials
and Renewable Energy Research Center, Department of Materials Science
and Engineering, Nanjing University, Kunshan Innovation Institute of Nanjing University, No. 22, Hankou Road, Nanjing, Jiangsu 210093, P. R. China
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37
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Naziruddin AR, Kuo CL, Lin WJ, Lo WH, Lee CS, Sun BJ, Chang AHH, Hwang WS. Ruthenium Complexes Bearing Unsymmetric CNC′ Pincer Ligands: Molecular Structures and Electronic Properties. Organometallics 2014. [DOI: 10.1021/om500205p] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Abbas Raja Naziruddin
- Department of Chemistry, National Dong Hwa University, Hualien 974, Taiwan, Republic of China
| | - Chia-Liang Kuo
- Department of Chemistry, National Dong Hwa University, Hualien 974, Taiwan, Republic of China
| | - Wan-Jung Lin
- Department of Chemistry, National Dong Hwa University, Hualien 974, Taiwan, Republic of China
| | - Wei-Hao Lo
- Department of Chemistry, National Dong Hwa University, Hualien 974, Taiwan, Republic of China
| | - Chen-Shiang Lee
- Department of Chemistry, National Dong Hwa University, Hualien 974, Taiwan, Republic of China
| | - Bian-Jian Sun
- Department of Chemistry, National Dong Hwa University, Hualien 974, Taiwan, Republic of China
| | - A. Hsiu Hwa Chang
- Department of Chemistry, National Dong Hwa University, Hualien 974, Taiwan, Republic of China
| | - Wen-Shu Hwang
- Department of Chemistry, National Dong Hwa University, Hualien 974, Taiwan, Republic of China
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38
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Asano MS, Okamura K, Fujii T, Otsuka T, Kaizu Y. Enhanced Intersystem Crossing Due to Long-range Exchange Interaction in Porphyrin Heterodimers: Dependence of Paramagnetic Species. CHEM LETT 2014. [DOI: 10.1246/cl.131096] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | | | - Takeshi Fujii
- Department of Chemistry, Tokyo Institute of Technology
| | | | - Youkoh Kaizu
- Department of Chemistry, Tokyo Institute of Technology
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39
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Hydrogen photogeneration promoted by efficient electron transfer from iridium sensitizers to colloidal MoS2 catalysts. Sci Rep 2014; 4:4045. [PMID: 24509729 PMCID: PMC3918704 DOI: 10.1038/srep04045] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Accepted: 01/23/2014] [Indexed: 11/09/2022] Open
Abstract
We report the utilization of colloidal MoS2 nanoparticles (NPs) for multicomponent photocatalytic water reduction systems in cooperation with a series of cyclometalated Ir(III) sensitizers. The effects of the particle size and particle dispersion of MoS2 NPs catalyst, reaction solvent and the concentration of the components on hydrogen evolution efficiency were investigated. The MoS2 NPs exhibited higher catalytic performance than did other commonly used water reduction catalysts under identical experiment conditions. The introduction of the carboxylate anchoring groups in the iridium complexes allows the species to be favorably chem-adsorbed onto the MoS2 NPs surface to increase the electron transfer, resulting in enhancement of hydrogen evolution relative to the non-attached systems. The highest apparent quantum yield, which was as high as 12.4%, for hydrogen evolution, was obtained (λ = 400 nm).
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40
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Chirdon DN, Transue WJ, Kagalwala HN, Kaur A, Maurer AB, Pintauer T, Bernhard S. [Ir(N^N^N)(C^N)L]+: a new family of luminophores combining tunability and enhanced photostability. Inorg Chem 2014; 53:1487-99. [PMID: 24437359 DOI: 10.1021/ic402411g] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The relatively unexplored luminophore architecture [Ir(N^N^N)(C^N)L](+) (N^N^N = tridentate polypyridyl ligand, C^N = 2-phenylpyridine derivative, and L = monodentate anionic ligand) offers the stability of tridentate polypyridyl coordination along with the tunability of three independently variable ligands. Here, a new family of these luminophores has been prepared based on the previously reported compound [Ir(tpy)(ppy)Cl](+) (tpy = 2,2':6',2″-terpyridine and ppy = 2-phenylpyridine). Complexes are obtained as single stereoisomers, and ligand geometry is unambiguously assigned via X-ray crystallography. Electrochemical analysis of the materials reveals facile HOMO modulation through ppy functionalization and alteration of the monodentate ligand's field strength. Emission reflects similar modulation shifting from orange to greenish-blue upon replacement of chloride with cyanide. Many of the new compounds exhibit impressive room temperature phosphorescence with lifetimes near 3 μs and quantum yields reaching 28.6%. Application of the new luminophores as photosensitizers for photocatalytic hydrogen generation reveals that their photostability in coordinating solvent is enhanced as compared to popular [Ir(ppy)2(bpy)](+) (bpy = 2,2'-bipyridine) photosensitizers. Yet, the binding of their monodentate ligand emerges as a source of instability during the redox processes of cyclic voltammetry and mass spectrometry. DFT modeling of electronic structure is provided for all compounds to elucidate experimental properties.
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Affiliation(s)
- Danielle N Chirdon
- Department of Chemistry, Carnegie Mellon University , Pittsburgh, Pennsylvania 15213, United States
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41
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Farran R, Jouvenot D, Loiseau F, Chauvin J, Deronzier A. Photoelectric conversion at a [Ru(bpy)3]2+-based metallic triad anchored on ITO surface. Dalton Trans 2014; 43:12156-9. [DOI: 10.1039/c4dt01884b] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A tri-metallic triad was built on ITO by a stepwise procedure, exhibiting photocurrent properties.
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Affiliation(s)
- Rajaa Farran
- Université Grenoble Alpes
- DCM
- 38041 Grenoble Cedex 9, France
| | | | | | - Jérôme Chauvin
- Université Grenoble Alpes
- DCM
- 38041 Grenoble Cedex 9, France
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42
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Ghosh R, Palit DK. Probing excited state charge transfer dynamics in a heteroleptic ruthenium complex. Phys Chem Chem Phys 2014; 16:219-26. [DOI: 10.1039/c3cp53886a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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43
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Zhang J, Geng J, Zheng G, Dai J, Fu Z. Highly stable photoresponsive complex framework formation involves unusual selective hydrogenation of a pyridine derivative. Chem Commun (Camb) 2014; 50:7326-8. [DOI: 10.1039/c4cc02584a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The self-assembly of the zinc ion with the ligand PYPDB in-situ generated from an unusual selective hydrogenation process produces a highly stable photoactive complex Zn(PYPDB)2 displaying interesting long range electron transfer behavior in the conjugated ring system.
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Affiliation(s)
- Jie Zhang
- Key Lab for Fuel Cell Technology of Guangdong Province
- Guangdong
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou, China
| | - Jianming Geng
- Key Lab for Fuel Cell Technology of Guangdong Province
- Guangdong
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou, China
| | - Guiming Zheng
- Key Lab for Fuel Cell Technology of Guangdong Province
- Guangdong
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou, China
| | - Jingcao Dai
- Institute of Materials Physical Chemistry
- Huaqiao University
- Quan-zhou, China
| | - Zhiyong Fu
- Key Lab for Fuel Cell Technology of Guangdong Province
- Guangdong
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou, China
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44
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Bronner C, Wenger OS. Long-range proton-coupled electron transfer in phenol–Ru(2,2′-bipyrazine)32+ dyads. Phys Chem Chem Phys 2014; 16:3617-22. [DOI: 10.1039/c3cp55071k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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45
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Viveke AA, Alexander V. pH-responsive luminescence of a new trinuclear Ru(ii) polypyridine complex. RSC Adv 2014. [DOI: 10.1039/c4ra07077a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Synthesis of a new heteroleptic trinuclear Ru(ii) complex of a ditopic imidazole-based terpyridine bridging ligand and its room temperature luminescence in fluid solution and pH modulated luminescence behaviour is reported.
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Affiliation(s)
| | - V. Alexander
- Department of chemistry
- Loyola College
- Chennai, India
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46
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Efficient Electronic Communication of Two Ruthenium Centers through a Rigid Ditopic N‐Heterocyclic Carbene Linker. Chemistry 2013; 19:17517-27. [DOI: 10.1002/chem.201302688] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Indexed: 11/07/2022]
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47
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Reindl SA, Pöthig A, Drees M, Bechlars B, Herdtweck E, Herrmann WA, Kühn FE. Pyrazolato-Bridged Dinuclear Complexes of Ruthenium(II) and Rhodium(III) with N-Heterocyclic Carbene Ligands: Synthesis, Characterization, and Electrochemical Properties. Organometallics 2013. [DOI: 10.1021/om400106f] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Stefan A. Reindl
- Department of Chemistry, Technische Universität München, Chair of Inorganic
Chemistry/Molecular Catalysis, Catalysis Research
Center, Ernst-Otto-Fischer Straße 1, D-85747 Garching bei München,
Germany
| | - Alexander Pöthig
- Department of Chemistry, Technische Universität München, Chair of Inorganic
Chemistry/Molecular Catalysis, Catalysis Research
Center, Ernst-Otto-Fischer Straße 1, D-85747 Garching bei München,
Germany
| | - Markus Drees
- Department of Chemistry, Technische Universität München, Chair of Inorganic
Chemistry/Molecular Catalysis, Catalysis Research
Center, Ernst-Otto-Fischer Straße 1, D-85747 Garching bei München,
Germany
| | - Bettina Bechlars
- Department of Chemistry, Technische Universität München, Chair of Inorganic
Chemistry/Molecular Catalysis, Catalysis Research
Center, Ernst-Otto-Fischer Straße 1, D-85747 Garching bei München,
Germany
| | - Eberhardt Herdtweck
- Department of Chemistry, Technische Universität München, Chair of Inorganic
Chemistry/Molecular Catalysis, Catalysis Research
Center, Ernst-Otto-Fischer Straße 1, D-85747 Garching bei München,
Germany
| | - Wolfgang A. Herrmann
- Department of Chemistry, Technische Universität München, Chair of Inorganic
Chemistry/Molecular Catalysis, Catalysis Research
Center, Ernst-Otto-Fischer Straße 1, D-85747 Garching bei München,
Germany
| | - Fritz E. Kühn
- Department of Chemistry, Technische Universität München, Chair of Inorganic
Chemistry/Molecular Catalysis, Catalysis Research
Center, Ernst-Otto-Fischer Straße 1, D-85747 Garching bei München,
Germany
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48
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Vallett PJ, Damrauer NH. Experimental and Computational Exploration of Ground and Excited State Properties of Highly Strained Ruthenium Terpyridine Complexes. J Phys Chem A 2013; 117:6489-507. [DOI: 10.1021/jp404248z] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Paul J. Vallett
- Department
of Chemistry and Biochemistry, University of Colorado Boulder, Boulder, Colorado 80309,
United States
| | - Niels H. Damrauer
- Department
of Chemistry and Biochemistry, University of Colorado Boulder, Boulder, Colorado 80309,
United States
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49
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Asano MS, Okamura K, Jin-mon A, Takahashi S, Kaizu Y. Enhanced intersystem crossing due to long-range exchange interaction in copper(II) porphyrin-free base porphyrin dimers: HOMO and spacer dependence. Chem Phys 2013. [DOI: 10.1016/j.chemphys.2013.03.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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50
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Ito A, Stewart DJ, Knight TE, Fang Z, Brennaman MK, Meyer TJ. Excited-State Dynamics in Rigid Media: Evidence for Long-Range Energy Transfer. J Phys Chem B 2013; 117:3428-38. [DOI: 10.1021/jp400514r] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Akitaka Ito
- Department
of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North
Carolina 27599, United States
| | - David J. Stewart
- Department
of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North
Carolina 27599, United States
| | - Troy E. Knight
- Department
of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North
Carolina 27599, United States
| | - Zhen Fang
- Department
of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North
Carolina 27599, United States
| | - M. Kyle Brennaman
- Department
of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North
Carolina 27599, United States
| | - Thomas J. Meyer
- Department
of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North
Carolina 27599, United States
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