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Ryland ES, Liu X, Kumar G, Raj SL, Xie ZL, Mengele AK, Fauth SS, Siewerth K, Dietzek-Ivanšić B, Rau S, Mulfort KL, Li X, Cordones AA. Site-specific electronic structure of covalently linked bimetallic dyads from nitrogen K-edge x-ray absorption spectroscopy. J Chem Phys 2024; 160:084307. [PMID: 38415835 DOI: 10.1063/5.0192809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 01/15/2024] [Indexed: 02/29/2024] Open
Abstract
A nitrogen K-edge x-ray absorption near-edge structure (XANES) survey is presented for tetrapyrido[3,2-a:2',3'-c:3″,2″-h:2‴,3‴-j]phenazine (tpphz)-bridged bimetallic assemblies that couple chromophore and catalyst transition metal complexes for light driven catalysis, as well as their individual molecular constituents. We demonstrate the high N site sensitivity of the N pre-edge XANES features, which are energetically well-separated for the phenazine bridge N atoms and for the individual metal-bound N atoms of the inner coordination sphere ligands. By comparison with the time-dependent density functional theory calculated spectra, we determine the origins of these distinguishable spectral features. We find that metal coordination generates large shifts toward higher energy for the metal-bound N atoms, with increasing shift for 3d < 4d < 5d metal bonding. This is attributed to increasing ligand-to-metal σ donation that increases the effective charge of the bound N atoms and stabilizes the N 1s core electrons. In contrast, the phenazine bridge N pre-edge peak is found at a lower energy due to stabilization of the low energy electron accepting orbital localized on the phenazine motif. While no sensitivity to ground state electronic coupling between the individual molecular subunits was observed, the spectra are sensitive to structural distortions of the tpphz bridge. These results demonstrate N K-edge XANES as a local probe of electronic structure in large bridging ligand motifs, able to distinctly investigate the ligand-centered orbitals involved in metal-to-ligand and ligand-to-ligand electron transfer following light absorption.
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Affiliation(s)
- Elizabeth S Ryland
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Xiaolin Liu
- University of Washington, Seattle, Washington 98195, USA
| | - Gaurav Kumar
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Sumana L Raj
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Zhu-Lin Xie
- Division of Chemical Sciences and Engineering, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Alexander K Mengele
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Sven S Fauth
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Kevin Siewerth
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Benjamin Dietzek-Ivanšić
- Leibniz Institute of Photonic Technology, Research Department Functional Interfaces, Albert-Einstein Straße 9, 07745 Jena, Germany and Friedrich Schiller University Jena, Institute of Physical Chemistry, Helmholtzweg 4, 07743 Jena, Germany
| | - Sven Rau
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Karen L Mulfort
- Division of Chemical Sciences and Engineering, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Xiaosong Li
- University of Washington, Seattle, Washington 98195, USA
| | - Amy A Cordones
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
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2
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Utschig LM, Zaluzec NJ, Malavath T, Ponomarenko NS, Tiede DM. Solar water splitting Pt-nanoparticle photosystem I thylakoid systems: Catalyst identification, location and oligomeric structure. BIOCHIMICA ET BIOPHYSICA ACTA (BBA) - BIOENERGETICS 2023; 1864:148974. [PMID: 37001790 DOI: 10.1016/j.bbabio.2023.148974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 03/10/2023] [Accepted: 03/25/2023] [Indexed: 03/31/2023]
Abstract
Photosynthetic conversion of light energy into chemical energy occurs in sheet-like membrane-bound compartments called thylakoids and is mediated by large integral membrane protein-pigment complexes called reaction centers (RCs). Oxygenic photosynthesis of higher plants, cyanobacteria and algae requires the symbiotic linking of two RCs, photosystem II (PSII) and photosystem I (PSI), to split water and assimilate carbon dioxide. Worldwide there is a large research investment in developing RC-based hybrids that utilize the highly evolved solar energy conversion capabilities of RCs to power catalytic reactions for solar fuel generation. Of particular interest is the solar-powered production of H2, a clean and renewable energy source that can replace carbon-based fossil fuels and help provide for ever-increasing global energy demands. Recently, we developed thylakoid membrane hybrids with abiotic catalysts and demonstrated that photosynthetic Z-scheme electron flow from the light-driven water oxidation at PSII can drive H2 production from PSI. One of these hybrid systems was created by self-assembling Pt-nanoparticles (PtNPs) with the stromal subunits of PSI that extend beyond the membrane plane in both spinach and cyanobacterial thylakoids. Using PtNPs as site-specific probe molecules, we report the electron microscopic (EM) imaging of oligomeric structure, location and organization of PSI in thylakoid membranes and provide the first direct visualization of photosynthetic Z-scheme solar water-splitting biohybrids for clean H2 production.
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3
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Photoinduced electron transfer in triazole-bridged donor-acceptor dyads – A critical perspective. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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4
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Guo S, Kong LH, Wang P, Yao S, Lu TB, Zhang ZM. Switching Excited State Distribution of Metal-Organic Framework for Dramatically Boosting Photocatalysis. Angew Chem Int Ed Engl 2022; 61:e202206193. [PMID: 35562329 DOI: 10.1002/anie.202206193] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Indexed: 11/07/2022]
Abstract
Photosensitization associated with electron/energy transfer represents the central science of natural photosynthesis. Herein, we proposed a protocol to dramatically improve the sensitizing ability of metal-organic frameworks (MOFs) by switching their excited state distribution from 3 MLCT (metal-to-ligand charge transfer) to 3 IL (intraligand). The hierarchical organization of 3 IL MOFs and Co/Cu catalysts facilitates electron transfer for efficient photocatalytic H2 evolution with a yield of 26 844.6 μmol g-1 and CO2 photoreduction with a record HCOOH yield of 4807.6 μmol g-1 among all the MOF photocatalysts. Systematic investigations demonstrate that strong visible-light-absorption, long-lived excited state and ingenious multi-component synergy in the 3 IL MOFs can facilitate both interface and intra-framework electron transfer to boost photocatalysis. This work opens up an avenue to boost solar-energy conversion by engineering sensitizing centers at a molecular level.
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Affiliation(s)
- Song Guo
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, School of Chemistry and Chemical, Engineering Tianjin University of Technology, Tianjin, 300384, China
| | - Li-Hui Kong
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, School of Chemistry and Chemical, Engineering Tianjin University of Technology, Tianjin, 300384, China
| | - Ping Wang
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, School of Chemistry and Chemical, Engineering Tianjin University of Technology, Tianjin, 300384, China
| | - Shuang Yao
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, School of Chemistry and Chemical, Engineering Tianjin University of Technology, Tianjin, 300384, China
| | - Tong-Bu Lu
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, School of Chemistry and Chemical, Engineering Tianjin University of Technology, Tianjin, 300384, China
| | - Zhi-Ming Zhang
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, School of Chemistry and Chemical, Engineering Tianjin University of Technology, Tianjin, 300384, China
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5
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Guo S, Kong LH, Wang P, Yao S, Lu TB, Zhang ZM. Switching Excited State Distribution of Metal‐Organic Framework for Dramatically Boosting Photocatalysis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202206193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Song Guo
- Tianjin University of Technology Insititute for New Energy Materials and Low Carbon Technologies CHINA
| | - Li-Hui Kong
- Tianjin University of Technology Insititute for New Energy Materials and Low Carbon Technologies CHINA
| | - Ping Wang
- Tianjin University of Technology Insititute for New Energy Materials and Low Carbon Technologies CHINA
| | - Shuang Yao
- Tianjin University of Technology Insititute for New Energy Materials and Low Carbon Technologies CHINA
| | - Tong-Bu Lu
- Tianjin University of Technology Insititute for New Energy Materials and Low Carbon Technologies CHINA
| | - Zhi-Ming Zhang
- Tianjin University of Technology School of Materials Science and Engineering No. 391 Binshuixi Road 300384 Tianjin CHINA
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6
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Rajasree SS, Yu J, Pratik SM, Li X, Wang R, Kumbhar AS, Goswami S, Cramer CJ, Deria P. Superradiance and Directional Exciton Migration in Metal-Organic Frameworks. J Am Chem Soc 2022; 144:1396-1406. [PMID: 35029989 DOI: 10.1021/jacs.1c11979] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Crystalline metal-organic frameworks (MOFs) are promising synthetic analogues of photosynthetic light-harvesting complexes (LHCs). The precise assembly of linkers (organic chromophores) around the topology-defined pores offers the evolution of unique photophysical behaviors that are reminiscence of LHCs. These include MOF excited states with photoabsorbed energy that is spatially dispersed over multiple linkers defining the molecular excitons. The multilinker molecular excitons display superradiance─a hallmark of coupled oscillators seen in LHCs─with radiative rate constant (krad) exceeding that of a single linker. Our theoretical model and experimental results on three zirconium MOFs, namely, PCN-222(Zn), NU-1000, and SIU-100, with similar topology but varying linkers suggest that the size of such molecular excitons depends on the electronic symmetry of the linker. This multilinker exciton model effectively predicts the energy transfer rate constant; corresponding single-step exciton hopping time, ranging from a few picoseconds in SIU-100 and NU-1000 to a few hundreds of picoseconds in PCN-222(Zn), matches well with the experimental data. The model also predicts the anisotropy of exciton displacement with preferential migration along the crystallographic c-axis. Overall, these findings establish various missing links defining the exciton size and dynamics in MOF-assembled linkers. The understandings will provide design principles, especially, positioning the catalysts or electrode relative to the linker orientation for low-density solar energy conversion systems.
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Affiliation(s)
- Sreehari Surendran Rajasree
- Department of Chemistry and Biochemistry, Southern Illinois University, 1245 Lincoln Drive, Carbondale, Illinois 62901, United States
| | - Jierui Yu
- Department of Chemistry and Biochemistry, Southern Illinois University, 1245 Lincoln Drive, Carbondale, Illinois 62901, United States
| | - Saied Md Pratik
- Department of Chemistry, Minnesota Supercomputing Institute, and Chemical Theory Center, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Xinlin Li
- Department of Chemistry and Biochemistry, Southern Illinois University, 1245 Lincoln Drive, Carbondale, Illinois 62901, United States
| | - Rui Wang
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Amar S Kumbhar
- Chapel Hill Analytical & Nanofabrication Laboratory, University of North Carolina-Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Subhadip Goswami
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Christopher J Cramer
- Department of Chemistry, Minnesota Supercomputing Institute, and Chemical Theory Center, University of Minnesota, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Pravas Deria
- Department of Chemistry and Biochemistry, Southern Illinois University, 1245 Lincoln Drive, Carbondale, Illinois 62901, United States
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7
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Cesana PT, Li BX, Shepard SG, Ting SI, Hart SM, Olson CM, Martinez Alvarado JI, Son M, Steiman TJ, Castellano FN, Doyle AG, MacMillan DW, Schlau-Cohen GS. A biohybrid strategy for enabling photoredox catalysis with low-energy light. Chem 2022. [DOI: 10.1016/j.chempr.2021.10.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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8
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Mahato RR, Shandilya E, Dasgupta B, Maiti S. Dictating Catalytic Preference and Activity of a Nanoparticle by Modulating Its Multivalent Engagement. ACS Catal 2021. [DOI: 10.1021/acscatal.1c01991] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Rishi Ram Mahato
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Manauli 140306, India
| | - Ekta Shandilya
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Manauli 140306, India
| | - Basundhara Dasgupta
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Manauli 140306, India
| | - Subhabrata Maiti
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Manauli 140306, India
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9
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Malayam Parambath S, Williams AE, Hunt LA, Selvan D, Hammer NI, Chakraborty S. A De Novo-Designed Artificial Metallopeptide Hydrogenase: Insights into Photochemical Processes and the Role of Protonated Cys. CHEMSUSCHEM 2021; 14:2237-2246. [PMID: 33787007 PMCID: PMC8569915 DOI: 10.1002/cssc.202100122] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Revised: 03/29/2021] [Indexed: 06/01/2023]
Abstract
Hydrogenase enzymes produce H2 gas, which can be a potential source of alternative energy. Inspired by the [NiFe] hydrogenases, we report the construction of a de novo-designed artificial hydrogenase (ArH). The ArH is a dimeric coiled coil where two cysteine (Cys) residues are introduced at tandem a/d positions of a heptad to create a tetrathiolato Ni binding site. Spectroscopic studies show that Ni binding significantly stabilizes the peptide producing electronic transitions characteristic of Ni-thiolate proteins. The ArH produces H2 photocatalytically, demonstrating a bell-shaped pH-dependence on activity. Fluorescence lifetimes and transient absorption spectroscopic studies are undertaken to elucidate the nature of pH-dependence, and to monitor the reaction kinetics of the photochemical processes. pH titrations are employed to determine the role of protonated Cys on reactivity. Through combining these results, a fine balance is found between solution acidity and the electron transfer steps. This balance is critical to maximize the production of NiI -peptide and protonation of the NiII -H- intermediate (Ni-R) by a Cys (pKa ≈6.4) to produce H2 .
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Affiliation(s)
- Sreya Malayam Parambath
- Department of Chemistry and Biochemistry, University of Mississippi, University, MS 38677, USA
| | - Ashley E Williams
- Department of Chemistry and Biochemistry, University of Mississippi, University, MS 38677, USA
| | - Leigh Anna Hunt
- Department of Chemistry and Biochemistry, University of Mississippi, University, MS 38677, USA
| | - Dhanashree Selvan
- Department of Chemistry and Biochemistry, University of Mississippi, University, MS 38677, USA
| | - Nathan I Hammer
- Department of Chemistry and Biochemistry, University of Mississippi, University, MS 38677, USA
| | - Saumen Chakraborty
- Department of Chemistry and Biochemistry, University of Mississippi, University, MS 38677, USA
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10
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Jeevan AK, Gopidas KR. Photoinduced Electron Transfer in a Self-Assembled Bis(β-cyclodextrin)-Linked Pyrene/Bis(adamantane)-Linked Methyl Viologen Donor-Acceptor System in Aqueous Solution. J Phys Chem B 2021; 125:4428-4437. [PMID: 33887907 DOI: 10.1021/acs.jpcb.1c00581] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Pyrene linked to two β-CD (CD = cyclodextrin; PY = pyrene) molecules (CD-PY-CD) and methylviologen (MV2+) linked to two adamantane (AD) groups (AD-MV2+-AD) self-assembled in water to give toroidal nanostructures. Photoprocesses taking place in the femtosecond and nanosecond time ranges within the assembly are reported. Fluorescence of the pyrene chromophore was quenched in the toroid, suggesting very efficient electron transfer. Fast quenching of the pyrene fluorescence with a time constant of 6.85 ns was attributed to photoinduced electron transfer from pyrene to methyl viologen within the toroid assembly. Electron transfer leads to the formation of radical ion products, PY•+ and MV•+, which were identified in the nanosecond transient absorption spectra. Because of the close packing of chromophores, the radical ions undergo fast reactions with chromophores or similar ions in adjacent stacks to give dimeric products. Since the dimeric species are not very stable, the reactions are reversed at longer time scales to generate the radical ions, which then undergo back electron transfer and regenerate the starting materials.
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Affiliation(s)
- Athira K Jeevan
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695 019, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 200 002, India
| | - Karical R Gopidas
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695 019, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 200 002, India
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11
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Replacing Pyridine with Pyrazine in Molecular Cobalt Catalysts: Effects on Electrochemical Properties and Aqueous H2 Generation. Catalysts 2021. [DOI: 10.3390/catal11010075] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Four new molecular Co(II)tetrapyridyl complexes were synthesized and evaluated for their activity as catalysts for proton reduction in aqueous environments. The pyridine groups around the macrocycle were substituted for either one or two pyrazine groups. Single crystal X-ray analysis shows that the pyrazine groups have minimal impact on the Co(II)–N bond lengths and molecular geometry in general. X-band EPR spectroscopy confirms the Co(II) oxidation state and the electronic environment of the Co(II) center are only very slightly perturbed by the substitution of pyrazine groups around the macrocycle. The substitution of pyrazine groups has a substantial impact on the observed metal- and ligand-centered reduction potentials as well as the overall H2 catalytic activity in a multimolecular system using the [Ru(2,2′-bipyridine)3]Cl2 photosensitizer and ascorbic acid as a sacrificial electron donor. The results reveal interesting trends between the H2 catalytic activity for each catalyst and the driving force for electron transfer between either the reduced photosensitizer to catalyst step or the catalyst to proton reduction step. The work presented here showcases how even the difference of a single atom in a molecular catalyst can have an important impact on activity and suggests a pathway to optimize the photocatalytic activity and stability of molecular systems.
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12
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Hong YH, Lee YM, Nam W, Fukuzumi S. Photocatalytic Hydrogen Evolution from Plastoquinol Analogues as a Potential Functional Model of Photosystem I. Inorg Chem 2020; 59:14838-14846. [PMID: 33023288 DOI: 10.1021/acs.inorgchem.0c02254] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The recent development of a functional model of photosystem II (PSII) has paved a new way to connect the PSII model with a functional model of photosystem I (PSI). However, PSI functional models have yet to be reported. We report herein the first potential functional model of PSI, in which plastoquinol (PQH2) analogues were oxidized to plastoquinone (PQ) analogues, accompanied by hydrogen (H2) evolution. Photoirradiation of a deaerated acetonitrile (MeCN) solution containing hydroquinone derivatives (X-QH2) as a hydrogen source, 9-mesityl-10-methylacridinium ion (Acr+-Mes) as a photoredox catalyst, and a cobalt(III) complex, CoIII(dmgH)2pyCl (dmgH = dimethylglyoximate monoanion; py = pyridine) as a redox catalyst resulted in the evolution of H2 and formation of the corresponding p-benzoquinone derivatives (X-Q) quantitatively. The maximum quantum yield for photocatalytic H2 evolution from tetrachlorohydroquinone (Cl4QH2) with Acr+-Mes and CoIII(dmgH)2pyCl and H2O in deaerated MeCN was determined to be 10%. Photocatalytic H2 evolution is started by electron transfer (ET) from Cl4QH2 to the triplet ET state of Acr+-Mes to produce Cl4QH2•+ and Acr•-Mes with a rate constant of 7.2 × 107 M-1 s-1, followed by ET from Acr•-Mes to CoIII(dmgH)2pyCl to produce [CoII(dmgH)2pyCl]-, accompanied by the regeneration of Acr+-Mes. On the other hand, Cl4QH2•+ is deprotonated to produce Cl4QH•, which transfers either a hydrogen-atom transfer or a proton-coupled electron transfer to [CoII(dmgH)2pyCl]- to produce a cobalt(III) hydride complex, [CoIII(H)(dmgH)2pyCl]-, which reacts with H+ to evolve H2, accompanied by the regeneration of CoIII(dmgH)2pyCl. The formation of [CoII(dmgH)2pyCl]- was detected by electron paramagnetic resonance measurements.
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Affiliation(s)
- Young Hyun Hong
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea
| | - Yong-Min Lee
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea
| | - Wonwoo Nam
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea.,School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China
| | - Shunichi Fukuzumi
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea.,Faculty of Science and Engineering, Meijo University, Nagoya, Aichi 468-0073, Japan
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13
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Krishnan SB, Gopidas KR. Generation of Long-Lived Photoinduced Charge Separation in a Supramolecular Toroidal Assembly. J Phys Chem B 2020; 124:9546-9555. [PMID: 32897708 DOI: 10.1021/acs.jpcb.0c05410] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Efficiencies of artificial photosynthetic and photocatalytic systems depend on their ability to generate long-lived charge-separated (CS) states in photoinduced electron transfer (PET) reactions. PET, in most cases, is followed by an ultrafast back electron transfer, which severely reduces lifetime and quantum yield of CS states. Generation of a long-lived CS state is an important goal in the study of PET reactions. Herein, we report that this goal is achieved using a hierarchically self-assembled anthracene-methyl viologen donor-acceptor system. Anthracene linked to two β-cyclodextrin molecules (CD-AN-CD) and methyl viologen linked to two adamantane units (AD-MV2+-AD) form an inclusion complex in water, which further self-assembled into well-defined toroidal nanostructures. The fluorescence of anthracene is highly quenched in the self-assembled system because of PET from anthracene to methyl viologen. Irradiation of the aqueous toroidal solution led to formation of a long-lived CS state. Rational mechanisms for the formation of the toroidal nanostructures and long-lived photoinduced charge separation are presented in the paper.
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Affiliation(s)
- Sumesh B Krishnan
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695 019, India.,Academy of Scientific and Innovative Research (AcSIR), New Delhi 110001, India
| | - Karical R Gopidas
- Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695 019, India.,Academy of Scientific and Innovative Research (AcSIR), New Delhi 110001, India
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14
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Prasad P, Selvan D, Chakraborty S. Biosynthetic Approaches towards the Design of Artificial Hydrogen-Evolution Catalysts. Chemistry 2020; 26:12494-12509. [PMID: 32449989 DOI: 10.1002/chem.202001338] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Indexed: 11/07/2022]
Abstract
Hydrogen is a clean and sustainable form of fuel that can minimize our heavy dependence on fossil fuels as the primary energy source. The need of finding greener ways to generate H2 gas has ignited interest in the research community to synthesize catalysts that can produce H2 by the reduction of H+ . The natural H2 producing enzymes hydrogenases have served as an inspiration to produce catalytic metal centers akin to these native enzymes. In this article we describe recent advances in the design of a unique class of artificial hydrogen evolving catalysts that combine the features of the active site metal(s) surrounded by a polypeptide component. The examples of these biosynthetic catalysts discussed here include i) assemblies of synthetic cofactors with native proteins; ii) peptide-appended synthetic complexes; iii) substitution of native cofactors with non-native cofactors; iv) metal substitution from rubredoxin; and v) a reengineered Cu storage protein into a Ni binding protein. Aspects of key design considerations in the construction of these artificial biocatalysts and insights gained into their chemical reactivity are discussed.
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Affiliation(s)
- Pallavi Prasad
- Department of Chemistry and Biochemistry, University of Mississippi, University, MS, 38677, USA
| | - Dhanashree Selvan
- Department of Chemistry and Biochemistry, University of Mississippi, University, MS, 38677, USA
| | - Saumen Chakraborty
- Department of Chemistry and Biochemistry, University of Mississippi, University, MS, 38677, USA
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15
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Tuning the reactivity of cobalt-based H2 production electrocatalysts via the incorporation of the peripheral basic functionalities. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213335] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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16
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Gross Z, Sharma VK, Saltsman I, Chen QC, Fridman N. Self-Assembly of Simple Corroles, via Hydrogen Bonding and Coordination. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000086] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Zeev Gross
- Schulich Faculty of Chemistry; Technion- Israel Institute of Technology; 32000 Haifa Israel
| | - Vinay Kumar Sharma
- Schulich Faculty of Chemistry; Technion- Israel Institute of Technology; 32000 Haifa Israel
| | - Irena Saltsman
- Schulich Faculty of Chemistry; Technion- Israel Institute of Technology; 32000 Haifa Israel
| | - Qiu-Cheng Chen
- Schulich Faculty of Chemistry; Technion- Israel Institute of Technology; 32000 Haifa Israel
| | - Natalia Fridman
- Schulich Faculty of Chemistry; Technion- Israel Institute of Technology; 32000 Haifa Israel
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17
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Yu J, Anderson R, Li X, Xu W, Goswami S, Rajasree SS, Maindan K, Gómez-Gualdrón DA, Deria P. Improving Energy Transfer within Metal–Organic Frameworks by Aligning Linker Transition Dipoles along the Framework Axis. J Am Chem Soc 2020; 142:11192-11202. [DOI: 10.1021/jacs.0c03949] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Jierui Yu
- Department of Chemistry and Biochemistry, Southern Illinois University, 1245 Lincoln Drive, Carbondale, Illinois 62901, United States
| | - Ryther Anderson
- Department of Chemical and Biological Engineering, Colorado School of Mines, 1500 Illinois Street, Golden, Colorado 80401, United States
| | - Xinlin Li
- Department of Chemistry and Biochemistry, Southern Illinois University, 1245 Lincoln Drive, Carbondale, Illinois 62901, United States
| | - Wenqian Xu
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, Illinois 60439, United States
| | - Subhadip Goswami
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Sreehari Surendran Rajasree
- Department of Chemistry and Biochemistry, Southern Illinois University, 1245 Lincoln Drive, Carbondale, Illinois 62901, United States
| | - Karan Maindan
- Department of Chemistry and Biochemistry, Southern Illinois University, 1245 Lincoln Drive, Carbondale, Illinois 62901, United States
| | - Diego A. Gómez-Gualdrón
- Department of Chemical and Biological Engineering, Colorado School of Mines, 1500 Illinois Street, Golden, Colorado 80401, United States
| | - Pravas Deria
- Department of Chemistry and Biochemistry, Southern Illinois University, 1245 Lincoln Drive, Carbondale, Illinois 62901, United States
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18
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Ponomarenko NS, Kokhan O, Pokkuluri PR, Mulfort KL, Tiede DM. Examination of abiotic cofactor assembly in photosynthetic biomimetics: site-specific stereoselectivity in the conjugation of a ruthenium(II) tris(bipyridine) photosensitizer to a multi-heme protein. PHOTOSYNTHESIS RESEARCH 2020; 143:99-113. [PMID: 31925630 PMCID: PMC6989566 DOI: 10.1007/s11120-019-00697-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 12/02/2019] [Indexed: 05/18/2023]
Abstract
To understand design principles for assembling photosynthetic biohybrids that incorporate precisely-controlled sites for electron injection into redox enzyme cofactor arrays, we investigated the influence of chirality in assembly of the photosensitizer ruthenium(II)bis(2,2'-bipyridine)(4-bromomethyl-4'-methyl-2,2'-bipyridine), Ru(bpy)2(Br-bpy), when covalently conjugated to cysteine residues introduced by site-directed mutagenesis in the triheme periplasmic cytochrome A (PpcA) as a model biohybrid system. For two investigated conjugates that show ultrafast electron transfer, A23C-Ru and K29C-Ru, analysis by circular dichroism spectroscopy, CD, demonstrated site-specific chiral discrimination as a factor emerging from the close association between [Ru(bpy)3]2+ and heme cofactors. CD analysis showed the A23C-Ru and K29C-Ru conjugates to have distinct, but opposite, stereoselectivity for the Λ and Δ-Ru(bpy)2(Br-bpy) enantiomers, with enantiomeric excesses of 33.1% and 65.6%, respectively. In contrast, Ru(bpy)2(Br-bpy) conjugation to a protein site with high flexibility, represented by the E39C-Ru construct, exhibited a nearly negligible chiral selectivity, measured by an enantiomeric excess of 4.2% for the Λ enantiomer. Molecular dynamics simulations showed that site-specific stereoselectivity reflects steric constraints at the conjugating sites and that a high degree of chiral selectivity correlates to reduced structural disorder for [Ru(bpy)3]2+ in the linked assembly. This work identifies chiral discrimination as means to achieve site-specific, precise geometric positioning of introduced photosensitizers relative to the heme cofactors in manner that mimics the tuning of cofactors in photosynthesis.
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Affiliation(s)
- Nina S Ponomarenko
- Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL, 60439, USA.
| | - Oleksandr Kokhan
- Department of Chemistry and Biochemistry, James Madison University, 901 Carrier Drive, Harrisonburg, VA, 22807, USA
| | - Phani R Pokkuluri
- Biosciences Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL, 60439, USA
| | - Karen L Mulfort
- Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL, 60439, USA
| | - David M Tiede
- Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL, 60439, USA.
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19
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Botcha NK, Gutha RR, Sadeghi SM, Mukherjee A. Synthesis of water-soluble Ni(II) complexes and their role in photo-induced electron transfer with MPA-CdTe quantum dots. PHOTOSYNTHESIS RESEARCH 2020; 143:143-153. [PMID: 31495904 DOI: 10.1007/s11120-019-00668-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 08/13/2019] [Indexed: 06/10/2023]
Abstract
Photocatalytic water splitting using solar energy for hydrogen production offers a promising alternative form of storable and clean energy for the future. To design an artificial photosynthesis system that is cost-effective and scalable, earth abundant elements must be used to develop each of the components of the assembly. To develop artificial photosynthetic systems, we need to couple a catalyst for proton reduction to a photosensitizer and understand the mechanism of photo-induced electron transfer from the photosensitizer to the catalyst that serves as the fundamental step for photocatalysis. Therefore, our work is focused on the study of light driven electron transfer kinetics from the quantum dot systems made with inorganic chalcogenides in the presence of Ni-based reduction catalysts. Herein, we report the synthesis and characterization of four Ni(II) complexes of tetradentate ligands with amine and pyridine functionalities (N2/Py2) and their interactions with CdTe quantum dots stabilized by 3-mercaptopropionic acid. The lifetime of the quantum dots was investigated in the presence of the Ni complexes and absorbance, emission and electrochemical measurements were performed to gain a deeper understanding of the photo-induced electron transfer process.
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Affiliation(s)
- Niharika Krishna Botcha
- Department of Chemistry, The University of Alabama in Huntsville, 301 Sparkman Drive, Huntsville, AL, 35899, USA
| | - Rithvik R Gutha
- Department of Physics and Astronomy, The University of Alabama in Huntsville, 301 Sparkman Drive, Huntsville, AL, 35899, USA
| | - Seyed M Sadeghi
- Department of Physics and Astronomy, The University of Alabama in Huntsville, 301 Sparkman Drive, Huntsville, AL, 35899, USA
| | - Anusree Mukherjee
- Department of Chemistry, The University of Alabama in Huntsville, 301 Sparkman Drive, Huntsville, AL, 35899, USA.
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20
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Brahmachari U, Pokkuluri PR, Tiede DM, Niklas J, Poluektov OG, Mulfort KL, Utschig LM. Interprotein electron transfer biohybrid system for photocatalytic H 2 production. PHOTOSYNTHESIS RESEARCH 2020; 143:183-192. [PMID: 31925629 DOI: 10.1007/s11120-019-00705-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 12/23/2019] [Indexed: 05/18/2023]
Abstract
Worldwide there is a large research investment in developing solar fuel systems as clean and sustainable sources of energy. The fundamental mechanisms of natural photosynthesis can provide a source of inspiration for these studies. Photosynthetic reaction center (RC) proteins capture and convert light energy into chemical energy that is ultimately used to drive oxygenic water-splitting and carbon fixation. For the light energy to be used, the RC communicates with other donor/acceptor components via a sophisticated electron transfer scheme that includes electron transfer reactions between soluble and membrane bound proteins. Herein, we reengineer an inherent interprotein electron transfer pathway in a natural photosynthetic system to make it photocatalytic for aqueous H2 production. The native electron shuttle protein ferredoxin (Fd) is used as a scaffold for binding of a ruthenium photosensitizer and H2 catalytic function is imparted to its partner protein, ferredoxin-NADP+-reductase (FNR), by attachment of cobaloxime molecules. We find that this 2-protein biohybrid system produces H2 in aqueous solutions via light-induced interprotein electron transfer reactions (TON > 2500 H2/FNR), providing insight about using native protein-protein interactions as a method for fuel generation.
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Affiliation(s)
- Udita Brahmachari
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - P Raj Pokkuluri
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - David M Tiede
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - Jens Niklas
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - Oleg G Poluektov
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - Karen L Mulfort
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - Lisa M Utschig
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, 60439, USA.
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21
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Song D, Li B, Li X, Sun X, Li J, Li C, Xu T, Zhu Y, Li F, Wang N. Orthogonal Supramolecular Assembly Triggered by Inclusion and Exclusion Interactions with Cucurbit[7]uril for Photocatalytic H 2 Evolution. CHEMSUSCHEM 2020; 13:394-399. [PMID: 31682086 DOI: 10.1002/cssc.201902668] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 11/03/2019] [Indexed: 06/10/2023]
Abstract
The fabrication of efficient and convenient photocatalytic H2 evolution systems is a fascinating research topic in the field of solar energy conversion. A ternary self-assembled photocatalytic H2 evolution system was fabricated through supramolecular host-guest chemistry. The system consisted of the H2 evolution catalyst [Co(dmgH)2 (4-ppy)2 ]NO3 (1; dmgH2 =dimethylglyoxime, 4-ppy=4-phenylpyridine) and the photosensitizer Eosin Y (EY) assembled with the macrocyclic compound cucurbit[7]uril (CB[7]) to form the 1@CB[7]/EY complex through inclusion and exclusion interactions, respectively. The synchronous self-assembly drives an orthogonal arrangement of the 1@CB[7]/EY system. The inclusion complex 1@CB[7] was successfully characterized by 1 H NMR spectroscopy and single-crystal XRD. The exclusion process of CB[7] with EY was identified by NMR titration and the optimized geometry of the exclusion structure was determined by DFT calculations. The use of CB[7] resulted in a 6-fold increase in turnover number, a 3-fold increase in turnover frequency, and a 3-fold extension of lifetime for photocatalytic H2 evolution as compared with the system in the absence of CB[7]. The improvement of the light-driven H2 evolution activity was ascribed to the ability of CB[7] to link the photosensitizer and catalyst.
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Affiliation(s)
- Dengmeng Song
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710069, P.R. China
| | - Bo Li
- College of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, 450001, P.R. China
| | - Xin Li
- College of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, 450001, P.R. China
| | - Xuzhuo Sun
- College of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, 450001, P.R. China
| | - Jun Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710069, P.R. China
| | - Chengbo Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710069, P.R. China
| | - Tongyu Xu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710069, P.R. China
| | - Yong Zhu
- State Key Laboratory of Fine Chemicals, DUT-KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology, Dalian, 116024, P.R. China
| | - Fei Li
- State Key Laboratory of Fine Chemicals, DUT-KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology, Dalian, 116024, P.R. China
| | - Ning Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710069, P.R. China
- State Key Laboratory of Fine Chemicals, DUT-KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology, Dalian, 116024, P.R. China
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22
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Sharma N, Lee Y, Nam W, Fukuzumi S. Photoinduced Generation of Superoxidants for the Oxidation of Substrates with High C−H Bond Dissociation Energies. CHEMPHOTOCHEM 2019. [DOI: 10.1002/cptc.201900219] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Namita Sharma
- Department of Chemistry and Nano ScienceEwha Womans University Seoul 03760 Korea
| | - Yong‐Min Lee
- Department of Chemistry and Nano ScienceEwha Womans University Seoul 03760 Korea
| | - Wonwoo Nam
- Department of Chemistry and Nano ScienceEwha Womans University Seoul 03760 Korea
| | - Shunichi Fukuzumi
- Department of Chemistry and Nano ScienceEwha Womans University Seoul 03760 Korea
- Graduate School of Science and EngineeringMeijo University, Nagoya Aichi 468-8502 Japan
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23
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Mandal T, Singh V, Choudhury J. Coordination Booster-Catalyst Assembly: Remote Osmium Outperforming Ruthenium in Boosting Catalytic Activity. Chem Asian J 2019; 14:4774-4779. [PMID: 31560812 DOI: 10.1002/asia.201901215] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 09/26/2019] [Indexed: 12/15/2022]
Abstract
Presented herein is a set of bimetallic and trimetallic "coordination booster-catalyst" assemblies in which the coordination complexes [RuII (terpy)2 ] and [OsII (terpy)2 ] acted as boosters for enhancement of the catalytic activity of [RuII (NHC)(para-cymene)]-based catalytic site. The boosters accelerated the oxidative loss of para-cymene from the catalytic site to generate the active catalyst during the oxidation of alkenes and alkynes into corresponding aldehydes, ketones and diketones. It was found that the boosting efficiency of the [OsII (terpy)2 ] units was considerably higher than its congener [RuII (terpy)2 ] unit in these assemblies. Mechanistic studies were conducted to understand this unique improvement.
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Affiliation(s)
- Tanmoy Mandal
- Organometallics & Smart Materials Laboratory, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, 462 066, India
| | - Vivek Singh
- Organometallics & Smart Materials Laboratory, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, 462 066, India
| | - Joyanta Choudhury
- Organometallics & Smart Materials Laboratory, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal, 462 066, India
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24
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Wang P, Guo S, Wang HJ, Chen KK, Zhang N, Zhang ZM, Lu TB. A broadband and strong visible-light-absorbing photosensitizer boosts hydrogen evolution. Nat Commun 2019; 10:3155. [PMID: 31316076 PMCID: PMC6637189 DOI: 10.1038/s41467-019-11099-8] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Accepted: 06/13/2019] [Indexed: 12/14/2022] Open
Abstract
Developing broadband and strong visible-light-absorbing photosensitizer is highly desired for dramatically improving the utilization of solar energy and boosting artificial photosynthesis. Herein, we develop a facile strategy to co-sensitize Ir-complex with Coumarins and boron dipyrromethene to explore photosensitizer with a broadband covering ca. 50% visible light region (Ir-4). This type of photosensitizer is firstly introduced into water splitting system, exhibiting significantly enhanced performance with over 21 times higher than that of typical Ir(ppy)2(bpy)+, and the turnover number towards Ir-4 reaches to 115840, representing the most active sensitizer among reported molecular photocatalytic systems. Experimental and theoretical investigations reveal that the Ir-mediation not only achieves a long-lived boron dipyrromethene-localized triplet state, but also makes an efficient excitation energy transfer from Coumarin to boron dipyrromethene to trigger the electron transfer. These findings provide an insight for developing broadband and strong visible-light-absorbing multicomponent arrays on molecular level for efficient artificial photosynthesis.
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Affiliation(s)
- Ping Wang
- International Joint Research Laboratory of Materials Microstructure, Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, 300384, Tianjin, China
| | - Song Guo
- International Joint Research Laboratory of Materials Microstructure, Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, 300384, Tianjin, China.
| | - Hong-Juan Wang
- International Joint Research Laboratory of Materials Microstructure, Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, 300384, Tianjin, China
| | - Kai-Kai Chen
- International Joint Research Laboratory of Materials Microstructure, Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, 300384, Tianjin, China
| | - Nan Zhang
- International Joint Research Laboratory of Materials Microstructure, Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, 300384, Tianjin, China
| | - Zhi-Ming Zhang
- International Joint Research Laboratory of Materials Microstructure, Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, 300384, Tianjin, China.
| | - Tong-Bu Lu
- International Joint Research Laboratory of Materials Microstructure, Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, 300384, Tianjin, China.
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, 510275, Guangzhou, China.
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25
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Hong YH, Jung J, Nakagawa T, Sharma N, Lee YM, Nam W, Fukuzumi S. Photodriven Oxidation of Water by Plastoquinone Analogs with a Nonheme Iron Catalyst. J Am Chem Soc 2019; 141:6748-6754. [PMID: 30943724 DOI: 10.1021/jacs.9b02517] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Photoirradiation of an acetonitrile solution containing p-benzoquinone derivatives (X-Q) as plastoquinone analogs, a nonheme iron(II) complex, [(N4Py)FeII]2+ (N4Py = N, N-bis(2-pyridylmethyl)- N-bis(2-pyridyl)methylamine), and H2O afforded the evolution of O2 and the formation of the corresponding hydroquinone derivatives (X-QH2) quantitatively. During the photodriven oxidation of water by X-Q, [(N4Py)FeII]2+ was oxidized by the excited state of X-Q to produce the iron(IV)-oxo complex ([(N4Py)FeIV(O)]2+) quantitatively. The concentration of [(N4Py)FeIV(O)]2+ remained virtually the same during the repeated cycles of photodriven oxidation of water by X-Q. [(N4Py)FeIV(O)]2+ was further oxidized by the excited state of X-Q to [(N4Py)FeV(O)]3+; this FeV-oxo species is proposed as an active oxidant that affects the water oxidation. The photocatalytic mechanism of the water oxidation by X-Q with [(N4Py)FeII]2+ was clarified by detecting intermediates using various spectroscopic techniques, such as transient absorption and electron paramagnetic resonance measurements. To the best of our knowledge, the present study reports the first example of a functional model of Photosystem II (PSII) using X-Q as plastoquinone analogs in the photocatalytic oxidation of water.
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Affiliation(s)
- Young Hyun Hong
- Department of Chemistry and Nano Science , Ewha Womans University , Seoul 03760 , Korea
| | - Jieun Jung
- Department of Chemistry and Nano Science , Ewha Womans University , Seoul 03760 , Korea.,Department of Chemistry, Graduate School of Science , Nagoya University , Chikusa, Nagoya 464-8602 , Japan
| | - Tatsuo Nakagawa
- Unisoku Co., Ltd, SENTAN, Japan Science and Technology Agency (JST) , Hirakata , Osaka 573-0131 , Japan
| | - Namita Sharma
- Department of Chemistry and Nano Science , Ewha Womans University , Seoul 03760 , Korea
| | - Yong-Min Lee
- Department of Chemistry and Nano Science , Ewha Womans University , Seoul 03760 , Korea
| | - Wonwoo Nam
- Department of Chemistry and Nano Science , Ewha Womans University , Seoul 03760 , Korea.,State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP) , Chinese Academy of Sciences , Lanzhou 730000 , China
| | - Shunichi Fukuzumi
- Department of Chemistry and Nano Science , Ewha Womans University , Seoul 03760 , Korea.,Faculty of Science and Engineering , Meijo University, SENTAN, Japan Science and Technology Agency (JST) , Nagoya , Aichi 468-0073 , Japan
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26
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Kohler L, Mulfort KL. Photoinduced electron transfer kinetics of linked Ru-Co photocatalyst dyads. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2018.12.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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27
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Lentz C, Schott O, Auvray T, Hanan GS, Elias B. Design and photophysical studies of iridium(iii)–cobalt(iii) dyads and their application for dihydrogen photo-evolution. Dalton Trans 2019; 48:15567-15576. [DOI: 10.1039/c9dt01989h] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We report several new dyads constituted of cationic iridium(iii) photosensitizers and cobalt(iii) catalyst connected via free pendant pyridine on the photosensitizers.
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Affiliation(s)
- Cédric Lentz
- Institute of Condensed Matter and Nanosciences
- Molecular Chemistry
- Materials and Catalysis Division (IMCN/MOST)
- Université catholique de Louvain
- 1348 Louvain-la-Neuve
| | - Olivier Schott
- Département de Chimie
- Université de Montréal
- 2900 Boulevard Edouard-Montpetit
- Montréal
- Canada
| | - Thomas Auvray
- Département de Chimie
- Université de Montréal
- 2900 Boulevard Edouard-Montpetit
- Montréal
- Canada
| | - Garry S. Hanan
- Département de Chimie
- Université de Montréal
- 2900 Boulevard Edouard-Montpetit
- Montréal
- Canada
| | - Benjamin Elias
- Institute of Condensed Matter and Nanosciences
- Molecular Chemistry
- Materials and Catalysis Division (IMCN/MOST)
- Université catholique de Louvain
- 1348 Louvain-la-Neuve
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28
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Kohler L, Niklas J, Johnson RC, Zeller M, Poluektov OG, Mulfort KL. Molecular Cobalt Catalysts for H2 Generation with Redox Activity and Proton Relays in the Second Coordination Sphere. Inorg Chem 2018; 58:1697-1709. [DOI: 10.1021/acs.inorgchem.8b03297] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Lars Kohler
- Division of Chemical Sciences and Engineering, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, Illinois 60439, United States
| | - Jens Niklas
- Division of Chemical Sciences and Engineering, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, Illinois 60439, United States
| | - Ryan C. Johnson
- Division of Chemical Sciences and Engineering, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, Illinois 60439, United States
| | - Matthias Zeller
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
| | - Oleg G. Poluektov
- Division of Chemical Sciences and Engineering, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, Illinois 60439, United States
| | - Karen L. Mulfort
- Division of Chemical Sciences and Engineering, Argonne National Laboratory, 9700 S. Cass Avenue, Lemont, Illinois 60439, United States
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29
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Luo GG, Pan ZH, Lin JQ, Sun D. Tethered sensitizer-catalyst noble-metal-free molecular devices for solar-driven hydrogen generation. Dalton Trans 2018; 47:15633-15645. [PMID: 30299443 DOI: 10.1039/c8dt02831a] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Inspired by natural photosynthesis in an organized assembly, compact H2-evolving molecular devices, which tether sensitizer and catalyst modules in one single molecule, present an opportunity to overcome the diffusion limit required for multi-component molecular systems, and increase intramolecular electron transfer rates from the photoactivated unit to the catalytic center to improve H2-evolving efficiency. Thereinto absolutely noble-metal free H2-evolving molecular devices are of particular interest because they don't contain precious and scarce noble-metal based components. This Frontier article focuses specifically on the recent advances in the design, synthesis, and photocatalytic properties of all-abundant-element molecular devices for photoinduced H2 generation via intramolecular processes. Some challenges and suggestions for future directions in this field are also illustrated.
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Affiliation(s)
- Geng-Geng Luo
- Key Laboratory of Environmental Friendly Function Materials Ministry of Education, College of Materials Science and Engineering, Huaqiao University, Xiamen 361021, P.R. China.
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30
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Mimicry and functions of photosynthetic reaction centers. Biochem Soc Trans 2018; 46:1279-1288. [DOI: 10.1042/bst20170298] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Revised: 06/24/2018] [Accepted: 07/02/2018] [Indexed: 12/18/2022]
Abstract
The structure and function of photosynthetic reaction centers (PRCs) have been modeled by designing and synthesizing electron donor–acceptor ensembles including electron mediators, which can mimic multi-step photoinduced charge separation occurring in PRCs to obtain long-lived charge-separated states. PRCs in photosystem I (PSI) or/and photosystem II (PSII) have been utilized as components of solar cells to convert solar energy to electric energy. Biohybrid photoelectrochemical cells composed of PSII have also been developed for solar-driven water splitting into H2 and O2. Such a strategy to bridge natural photosynthesis with artificial photosynthesis is discussed in this minireview.
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31
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Eckenhoff WT. Molecular catalysts of Co, Ni, Fe, and Mo for hydrogen generation in artificial photosynthetic systems. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2017.11.002] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Hayes D, Kohler L, Chen LX, Mulfort KL. Ligand Mediation of Vectorial Charge Transfer in Cu(I)diimine Chromophore-Acceptor Dyads. J Phys Chem Lett 2018; 9:2070-2076. [PMID: 29614231 DOI: 10.1021/acs.jpclett.8b00468] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In this work, we present the photoinduced charge separation dynamics of four molecular dyads composed of heteroleptic Cu(I)bis(phenanthroline) chromophores linked directly to the common electron acceptor naphthalene diimide. The dyads were designed to allow us to (1) detect any kinetic preference for directionality during photoinduced electron transfer across the heteroleptic complex and (2) probe the influence of excited-state flattening on intramolecular charge separation. Singular value decomposition of ultrafast optical transient absorption spectra demonstrates that charge transfer occurs with strong directional preference, and charge separation occurs up to 35 times faster when the acceptor is linked to the sterically blocking ligand. Further, the charge-separated state in these dyads is stabilized by polar solvents, resulting in dramatically longer lifetimes for dyads with minimal substitution about the Cu(I) center. This unexpected but exciting observation suggests a new approach to the design of Cu(I)bis(phenanthroline) chromophores that can support long-lived vectorial charge separation.
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Affiliation(s)
- Dugan Hayes
- Division of Chemical Sciences and Engineering , Argonne National Laboratory , Argonne , Illinois 60439 , United States
| | - Lars Kohler
- Division of Chemical Sciences and Engineering , Argonne National Laboratory , Argonne , Illinois 60439 , United States
| | - Lin X Chen
- Division of Chemical Sciences and Engineering , Argonne National Laboratory , Argonne , Illinois 60439 , United States
- Department of Chemistry , Northwestern University , Evanston , Illinois 60208 , United States
| | - Karen L Mulfort
- Division of Chemical Sciences and Engineering , Argonne National Laboratory , Argonne , Illinois 60439 , United States
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Viere EJ, Kuhn AE, Roeder MH, Piro NA, Kassel WS, Dudley TJ, Paul JJ. Spectroelectrochemical studies of a ruthenium complex containing the pH sensitive 4,4'-dihydroxy-2,2'-bipyridine ligand. Dalton Trans 2018; 47:4149-4161. [PMID: 29473071 DOI: 10.1039/c7dt04554a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Attaining high oxidation states at the metal center of transition metal complexes is a key design principle for many catalytic processes. One way to support high oxidation state chemistry is to utilize ligands that are electron-donating in nature. Understanding the structural and electronic changes of metal complexes as higher oxidation states are reached is critical towards designing more robust catalysts that are able to turn over at high rates without decomposing. To this end, we report herein the changes in structural and electronic properties as [Ru(bpy)2(44'bpy(OH)2)]2+ is oxidized to [Ru(bpy)2(44'bpy(OH)2)]3+ (bpy = 2,2'-bipyridine; 44'bpy(OH)2 = 4,4'-dihydroxy-2,2'-bipyridine). The 44'bpy(OH)2 ligand is a pH-dependent ligand where deprotonation of the hydroxyl groups leads to significant electronic donation to the metal center. A Pourbaix Diagram of the complex reveals a pH independent reduction potential below pH = 2.0 for the Ru3+/2+ process at 0.91 V vs. Ag/AgCl. Above pH = 2.0, pH dependence is observed with a decrease in reduction potential until pH = 6.8 where the complex is completely deprotonated, resulting in a reduction potential of 0.62 V vs. Ag/AgCl. Spectroelectrochemical studies as a function of pH reveal the disappearance of the Metal to Ligand Charge Transfer (MLCT) or Mixed Metal-Ligand to Charge Transfer bands upon oxidation and the appearance of a new low energy band. DFT calculations for this low energy band were carried out using both B3LYP and M06-L functionals for all protonation states and suggest that numerous new transition types occur upon oxidation to Ru3+.
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Affiliation(s)
- Erin J Viere
- Department of Chemistry, Villanova University, 800 Lancaster Ave., Villanova, PA 19085, USA..
| | - Ashley E Kuhn
- Department of Chemistry, Villanova University, 800 Lancaster Ave., Villanova, PA 19085, USA..
| | - Margaret H Roeder
- Department of Chemistry, Villanova University, 800 Lancaster Ave., Villanova, PA 19085, USA..
| | - Nicholas A Piro
- Department of Chemistry, Albright College, 1621 N. 13th Street, Reading, PA 19604, USA
| | - W Scott Kassel
- Department of Chemistry, Villanova University, 800 Lancaster Ave., Villanova, PA 19085, USA..
| | - Timothy J Dudley
- Math, Science and Technology Department, University of Minnesota Crookston, 2900 University Ave., Crookston, MN 56716, USA
| | - Jared J Paul
- Department of Chemistry, Villanova University, 800 Lancaster Ave., Villanova, PA 19085, USA..
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Chen XF, El-Khouly ME, Ohkubo K, Fukuzumi S, Ng DKP. Assemblies of Boron Dipyrromethene/Porphyrin, Phthalocyanine, and C 60 Moieties as Artificial Models of Photosynthesis: Synthesis, Supramolecular Interactions, and Photophysical Studies. Chemistry 2018; 24:3862-3872. [PMID: 29315946 DOI: 10.1002/chem.201705843] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Indexed: 11/06/2022]
Abstract
A series of light-harvesting conjugates based on a zinc(II) phthalocyanine core with either two or four boron dipyrromethene (BODIPY) or porphyrin units have been synthesized and characterized. The conjugation of BODIPY/porphyrin units can extend the absorptions of the phthalocyanine core to cover most of the visible region. Upon addition of an imidazole-substituted C60 (C60 Im), it can axially bind to the zinc(II) center of the phthalocyanine core through metal-ligand interactions. The resulting complexes form photosynthetic antenna-reaction center mimics in which the BODIPY/porphyrin units serve as the antennas to capture the light and transfer the energy to the phthalocyanine core by efficient excitation energy transfer. The excited phthalocyanine is then quenched by the axially bound C60 Im moiety by electron transfer, which has been supported by computational studies. The photoinduced processes of the assemblies have been studied in detail by various steady-state and time-resolved spectroscopic methods. By femtosecond transient absorption spectroscopic studies, the lifetimes of the charge-separated state of the bis(BODIPY) and bis(porphyrin) systems have been determined to be 3.2 and 4.0 ns, respectively.
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Affiliation(s)
- Xiao-Fei Chen
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, P. R. China
| | - Mohamed E El-Khouly
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul, 120-750, Korea.,Department of Chemistry, Faculty of Science, Kafrelsheikh University, Kafrelsheikh, 33516, Egypt
| | - Kei Ohkubo
- Institute for Advanced Co-Creation Studies, Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Shunichi Fukuzumi
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul, 120-750, Korea.,Faculty of Science and Engineering, Meijo University, SENTAN, Japan Science and Technology Agency, Nagoya, Aichi, 468-8502, Japan
| | - Dennis K P Ng
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong, P. R. China
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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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36
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Fukuzumi S, Lee YM, Nam W. Thermal and photocatalytic production of hydrogen with earth-abundant metal complexes. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2017.07.014] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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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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Fukuzumi S, Lee Y, Nam W. Artificial Photosynthesis for Production of ATP, NAD(P)H, and Hydrogen Peroxide. CHEMPHOTOCHEM 2017. [DOI: 10.1002/cptc.201700146] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Shunichi Fukuzumi
- Department of Chemistry and Nano Science Ewha Womans University Seoul 03760 Korea
- Graduate School of Science and Engineering Meijo University, Nagoya Aichi 468-8502 Japan
| | - Yong‐Min Lee
- Department of Chemistry and Nano Science Ewha Womans University Seoul 03760 Korea
| | - Wonwoo Nam
- Department of Chemistry and Nano Science Ewha Womans University Seoul 03760 Korea
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39
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Kohler L, Hadt RG, Hayes D, Chen LX, Mulfort KL. Synthesis, structure, and excited state kinetics of heteroleptic Cu(i) complexes with a new sterically demanding phenanthroline ligand. Dalton Trans 2017; 46:13088-13100. [PMID: 28944388 DOI: 10.1039/c7dt02476b] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this report we describe the synthesis of a new phenanthroline ligand, 2,9-di(2,4,6-tri-isopropyl-phenyl)-1,10-phenanthroline (bL2) and its use as the blocking ligand in the preparation of two new heteroleptic Cu(i)diimine complexes. Analysis of the CuHETPHEN single crystal structures shows a distinct distortion from an ideal tetrahedral geometry around the Cu(i) center, forced by the secondary phenanthroline ligand rotating to accommodate the isopropyl groups of bL2. The increased steric bulk of bL2 as compared to the more commonly used 2,9-dimesityl-1,10-phenanthroline blocking ligand prohibits intramolecular ligand-ligand interaction, which is unique among CuHETPHEN complexes. The ground state optical and redox properties of CuHETPHEN complexes are responsive to the substitution on the blocking ligand even though the differences in structure are far removed from the Cu(i) center. Transient optical spectroscopy was used to understand the excited state kinetics in both coordinating and non-coordinating solvents following visible excitation. Substitution of the blocking phenanthroline ligand has a significant impact on the 3MLCT decay and can be used to increase the excited state lifetime by 50%. Electronic structure calculations established relationships between ground and excited state properties, and general entatic state concepts are discussed for copper photosensitizers. This work contributes to the growing library of CuHETPHEN complexes and broadens the fundamental understanding of their ground and excited state properties.
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Affiliation(s)
- Lars Kohler
- Division of Chemical Sciences and Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439, USA.
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40
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Schwizer F, Okamoto Y, Heinisch T, Gu Y, Pellizzoni MM, Lebrun V, Reuter R, Köhler V, Lewis JC, Ward TR. Artificial Metalloenzymes: Reaction Scope and Optimization Strategies. Chem Rev 2017; 118:142-231. [PMID: 28714313 DOI: 10.1021/acs.chemrev.7b00014] [Citation(s) in RCA: 490] [Impact Index Per Article: 70.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The incorporation of a synthetic, catalytically competent metallocofactor into a protein scaffold to generate an artificial metalloenzyme (ArM) has been explored since the late 1970's. Progress in the ensuing years was limited by the tools available for both organometallic synthesis and protein engineering. Advances in both of these areas, combined with increased appreciation of the potential benefits of combining attractive features of both homogeneous catalysis and enzymatic catalysis, led to a resurgence of interest in ArMs starting in the early 2000's. Perhaps the most intriguing of potential ArM properties is their ability to endow homogeneous catalysts with a genetic memory. Indeed, incorporating a homogeneous catalyst into a genetically encoded scaffold offers the opportunity to improve ArM performance by directed evolution. This capability could, in turn, lead to improvements in ArM efficiency similar to those obtained for natural enzymes, providing systems suitable for practical applications and greater insight into the role of second coordination sphere interactions in organometallic catalysis. Since its renaissance in the early 2000's, different aspects of artificial metalloenzymes have been extensively reviewed and highlighted. Our intent is to provide a comprehensive overview of all work in the field up to December 2016, organized according to reaction class. Because of the wide range of non-natural reactions catalyzed by ArMs, this was done using a functional-group transformation classification. The review begins with a summary of the proteins and the anchoring strategies used to date for the creation of ArMs, followed by a historical perspective. Then follows a summary of the reactions catalyzed by ArMs and a concluding critical outlook. This analysis allows for comparison of similar reactions catalyzed by ArMs constructed using different metallocofactor anchoring strategies, cofactors, protein scaffolds, and mutagenesis strategies. These data will be used to construct a searchable Web site on ArMs that will be updated regularly by the authors.
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Affiliation(s)
- Fabian Schwizer
- Department of Chemistry, Spitalstrasse 51, University of Basel , CH-4056 Basel, Switzerland
| | - Yasunori Okamoto
- Department of Chemistry, Spitalstrasse 51, University of Basel , CH-4056 Basel, Switzerland
| | - Tillmann Heinisch
- Department of Chemistry, Spitalstrasse 51, University of Basel , CH-4056 Basel, Switzerland
| | - Yifan Gu
- Searle Chemistry Laboratory, University of Chicago , 5735 S. Ellis Ave., Chicago, Illinois 60637, United States
| | - Michela M Pellizzoni
- Department of Chemistry, Spitalstrasse 51, University of Basel , CH-4056 Basel, Switzerland
| | - Vincent Lebrun
- Department of Chemistry, Spitalstrasse 51, University of Basel , CH-4056 Basel, Switzerland
| | - Raphael Reuter
- Department of Chemistry, Spitalstrasse 51, University of Basel , CH-4056 Basel, Switzerland
| | - Valentin Köhler
- Department of Chemistry, Spitalstrasse 51, University of Basel , CH-4056 Basel, Switzerland
| | - Jared C Lewis
- Searle Chemistry Laboratory, University of Chicago , 5735 S. Ellis Ave., Chicago, Illinois 60637, United States
| | - Thomas R Ward
- Department of Chemistry, Spitalstrasse 51, University of Basel , CH-4056 Basel, Switzerland
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41
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Lentz C, Schott O, Auvray T, Hanan G, Elias B. Photocatalytic Hydrogen Production Using a Red-Absorbing Ir(III)–Co(III) Dyad. Inorg Chem 2017; 56:10875-10881. [DOI: 10.1021/acs.inorgchem.7b00684] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Cédric Lentz
- Institute of Condensed Matter and Nanosciences, Molecules, Solids
and Reactivity, Université catholique de Louvain, Place Louis Pasteur 1, 1348 Louvain-la-Neuve, Belgium
| | - Olivier Schott
- Département de Chimie, Université de Montréal, 2900 Boulevard Edouard-Montpetit, Montréal, Québec H3T 1J4, Canada
| | - Thomas Auvray
- Département de Chimie, Université de Montréal, 2900 Boulevard Edouard-Montpetit, Montréal, Québec H3T 1J4, Canada
| | - Garry Hanan
- Département de Chimie, Université de Montréal, 2900 Boulevard Edouard-Montpetit, Montréal, Québec H3T 1J4, Canada
| | - Benjamin Elias
- Institute of Condensed Matter and Nanosciences, Molecules, Solids
and Reactivity, Université catholique de Louvain, Place Louis Pasteur 1, 1348 Louvain-la-Neuve, Belgium
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42
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Cao J, Zhou Y. Excited state relaxation processes of H 2-evolving Ru-Pd supramolecular photocatalysts containing a linear or non-linear bridge: a DFT and TDDFT study. Phys Chem Chem Phys 2017; 19:11529-11539. [PMID: 28425524 DOI: 10.1039/c6cp07857e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
In this study, the early-time excited state relaxation processes of bimetallic Ru-Pd supramolecular photocatalysts containing a linear 2,2':5',2''-terpyridine or a nonlinear 2,2':6',2''-terpyridine bridging ligand (BL) were investigated by density functional theory (DFT) and time-dependent DFT (TDDFT) approaches. The bridge based metal-to-ligand charge transfer triplet (3MLCT) state of the metal complex containing a linear bridging ligand was calculated to be the lowest energy triplet (T1) state which is closely related to the photocatalytic H2 production, while for that having a nonlinear bridging ligand, the T1 state is a Ru metal-centered (MC) triplet (3MCRu) state that is short-lived and rapidly decays to the ground electronic state (S0). Our simulation provides an alternative explanation for the smaller interligand electron transfer (ILET) rate in the Ru-Pd complex containing a linear bridge compared to the corresponding monometal Ru complex. Based on the calculation, we also suggest that the successive 3MLCT → 3MCRu → S0 conversion is responsible for the inefficiency of the Ru-Pd complex containing nonlinear bridge as a photocatalyst for H2 production. This study provides theoretical insights into the key steps of the photoinduced processes of the bimetallic H2-evolving supramolecular photocatalyst.
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Affiliation(s)
- Jun Cao
- Guizhou Provincial Key Laboratory of Computational Nano-material Science, Guizhou Synergetic Innovation Center of Scientific Big Data for Advanced Manufacturing Technology, Guizhou Education University, Guiyang, Guizhou 550018, China
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44
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Clark ER, Kurtz DM. Photosensitized H 2 Production Using a Zinc Porphyrin-Substituted Protein, Platinum Nanoparticles, and Ascorbate with No Electron Relay: Participation of Good's Buffers. Inorg Chem 2017; 56:4585-4594. [PMID: 28362081 DOI: 10.1021/acs.inorgchem.7b00228] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Development of efficient light-driven splitting of water, 2H2O → 2H2 + O2, often attempts to optimize photosensitization of the reductive and oxidative half-reactions individually. Numerous homogeneous and heterogeneous systems have been developed for photochemical stimulation of the reductive half reaction, 2H+ + 2e- → H2. These systems generally consist of various combinations of a H+ reduction catalyst, a photosensitizer (PS), and a "sacrificial" electron donor. Zinc(II)-porphyrins (ZnPs) have frequently been used as PSs for H2 generation, but they are subject to various self-quenching processes in aqueous solutions. Colloidal platinum in nanoparticle form (Pt NP) is a classical H+ reduction catalyst using ZnP photosensitizers, but efficient photosensitized H2 generation requires an electron relay molecule between ZnP and Pt NP. The present report describes an aqueous system for visible (white) light-sensitized generation of H2 using a protein-embedded Zn(II)-protoporphyrin IX as PS and Pt NP as H+ reduction catalyst without an added electron relay. This system operated efficiently in piperazino- and morpholino-alkylsulfonic acid (Good's buffers), which served as sacrificial electron donors. The system also required ascorbate at relatively modest concentrations, which stabilized the Zn(II)-protoporphyrin IX against photodegradation. In the absence of an electron relay molecule, the photosensitized H2 generation must involve formation of at least a transient complex between a protein-embedded Zn(II)-protoporphyrin IX species and Pt NP.
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Affiliation(s)
- Emily R Clark
- Department of Chemistry, University of Texas at San Antonio , San Antonio, Texas 78249, United States
| | - Donald M Kurtz
- Department of Chemistry, University of Texas at San Antonio , San Antonio, Texas 78249, United States
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Soltau SR, Dahlberg PD, Niklas J, Poluektov OG, Mulfort KL, Utschig LM. Ru-protein-Co biohybrids designed for solar hydrogen production: understanding electron transfer pathways related to photocatalytic function. Chem Sci 2016; 7:7068-7078. [PMID: 28451142 PMCID: PMC5355951 DOI: 10.1039/c6sc03121h] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 08/05/2016] [Indexed: 12/12/2022] Open
Abstract
Two ruthenium-protein-cobaloxime biohybrids produce photocatalytic hydrogen through different catalytic pathways characterized by EPR and transient optical spectroscopies.
A series of Ru–protein–Co biohybrids have been prepared using the electron transfer proteins ferredoxin (Fd) and flavodoxin (Fld) as scaffolds for photocatalytic hydrogen production. The light-generated charge separation within these hybrids has been monitored by transient optical and electron paramagnetic resonance spectroscopies. Two distinct electron transfer pathways are observed. The Ru–Fd–Co biohybrid produces up to 650 turnovers of H2 utilizing an oxidative quenching mechanism for Ru(ii)* and a sequential electron transfer pathway via the native [2Fe–2S] cluster to generate a Ru(iii)–Fd–Co(i) charge separated state that lasts for ∼6 ms. In contrast, a direct electron transfer pathway occurs for the Ru–ApoFld–Co biohybrid, which lacks an internal electron relay, generating Ru(i)–ApoFld–Co(i) charge separated state that persists for ∼800 μs and produces 85 turnovers of H2 by a reductive quenching mechanism for Ru(ii)*. This work demonstrates the utility of protein architectures for linking donor and catalytic function via direct or sequential electron transfer pathways to enable stabilized charge separation which facilitates photocatalysis for solar fuel production.
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Affiliation(s)
- Sarah R Soltau
- Chemical Sciences and Engineering Division , Argonne National Laboratory , Argonne , IL 60439 , USA . ; Tel: +1-630-252-3544
| | - Peter D Dahlberg
- Chemical Sciences and Engineering Division , Argonne National Laboratory , Argonne , IL 60439 , USA . ; Tel: +1-630-252-3544.,Graduate Program in Biophysics , The University of Chicago , Chicago , IL 60637 , USA
| | - Jens Niklas
- Chemical Sciences and Engineering Division , Argonne National Laboratory , Argonne , IL 60439 , USA . ; Tel: +1-630-252-3544
| | - Oleg G Poluektov
- Chemical Sciences and Engineering Division , Argonne National Laboratory , Argonne , IL 60439 , USA . ; Tel: +1-630-252-3544
| | - Karen L Mulfort
- Chemical Sciences and Engineering Division , Argonne National Laboratory , Argonne , IL 60439 , USA . ; Tel: +1-630-252-3544
| | - Lisa M Utschig
- Chemical Sciences and Engineering Division , Argonne National Laboratory , Argonne , IL 60439 , USA . ; Tel: +1-630-252-3544
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