51
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Furugori S, Kobayashi A, Watanabe A, Yoshida M, Kato M. Impact of Photosensitizing Multilayered Structure on Ruthenium(II)-Dye-Sensitized TiO 2-Nanoparticle Photocatalysts. ACS OMEGA 2017; 2:3901-3912. [PMID: 31457696 PMCID: PMC6641294 DOI: 10.1021/acsomega.7b00566] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2017] [Accepted: 07/12/2017] [Indexed: 06/10/2023]
Abstract
To improve the efficiency of photoinduced charge separation on the surface of dye-sensitized TiO2 nanoparticles, we synthesized the Ru(II)-photosensitizer-immobilized, Pt-cocatalyst-loaded TiO2 nanoparticles RuCP 2 @Pt-TiO2, RuCP 2 -Zr-RuP 6 @Pt-TiO2, and RuCP 2 -Zr-RuP 4 -Zr-RuP 6 @Pt-TiO2 (RuCP 2 = [Ru(bpy)2(mpbpy)]2-, RuP 4 = [Ru(bpy)(pbpy)2]6-, RuP 6 = [Ru(pbpy)3]10-, H4mpbpy = 2,2'-bipyridine-4,4'-bis(methanephosphonic acid), and H4pbpy = 2,2'-bipyridine-4,4'-bis(phosphonic acid)) using phosphonate linkers with bridging Zr4+ ions. X-ray fluorescence and ultraviolet-visible absorption spectra revealed that a layered molecular structure composed of Ru(II) photosensitizers and Zr4+ ions (i.e., RuCP 2 -Zr-RuP 6 and RuCP 2 -Zr-RuP 4 -Zr-RuP 6 ) was successfully formed on the surface of Pt-TiO2 nanoparticles, which increased the surface coverage from 0.113 nmol/cm2 for singly layered RuCP 2 @Pt-TiO2 to 0.330 nmol/cm2 for triply layered RuCP 2 -Zr-RuP 4 -Zr-RuP 6 @Pt-TiO2. The photocatalytic H2 evolution activity of the doubly layered RuCP 2 -Zr-RuP 6 @Pt-TiO2 was three times higher than that of the singly layered RuCP 2 @Pt-TiO2, whereas the activity of triply layered RuCP 2 -Zr-RuP 4 -Zr-RuP 6 @Pt-TiO2 was less than half of that for RuCP 2 @Pt-TiO2. The photosensitizing efficiencies of these Ru(II)-photosensitizer-immobilized nanoparticles for the O2 evolution reaction catalyzed by the Co(II)-containing Prussian blue analogue [CoII(H2O)2]1.31[{CoIII(CN)6}0.63{PtII(CN)4}0.37] decreased as the number of Ru(II)-photosensitizing layers increased. Thus, crucial aspects of the energy- and electron-transfer mechanism for the photocatalytic H2 and O2 evolution reactions involve not only the Ru(II)-complex-TiO2 interface but also the multilayered structure of the Ru(II)-photosensitizers on the Pt-TiO2 surface.
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Affiliation(s)
- Sogo Furugori
- Department
of Chemistry, Faculty of Science, Hokkaido
University, North-10
West-8, Kita-ku, Sapporo 060-0810, Japan
| | - Atsushi Kobayashi
- Department
of Chemistry, Faculty of Science, Hokkaido
University, North-10
West-8, Kita-ku, Sapporo 060-0810, Japan
- Precursory
Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST), Kawaguchi, Saitama 332-0012, Japan
| | - Ayako Watanabe
- Department
of Chemistry, Faculty of Science, Hokkaido
University, North-10
West-8, Kita-ku, Sapporo 060-0810, Japan
| | - Masaki Yoshida
- Department
of Chemistry, Faculty of Science, Hokkaido
University, North-10
West-8, Kita-ku, Sapporo 060-0810, Japan
| | - Masako Kato
- Department
of Chemistry, Faculty of Science, Hokkaido
University, North-10
West-8, Kita-ku, Sapporo 060-0810, Japan
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52
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Eberhart MS, Wee KR, Marquard S, Skinner K, Wang D, Nayak A, Meyer TJ. Fluoropolymer-Stabilized Chromophore-Catalyst Assemblies in Aqueous Buffer Solutions for Water-Oxidation Catalysis. CHEMSUSCHEM 2017; 10:2380-2384. [PMID: 28453926 DOI: 10.1002/cssc.201700630] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 04/26/2017] [Indexed: 06/07/2023]
Abstract
Here, the application of the fluorinated polymer [Dupont AF, a copolymer of 4,5-difluoro-2,2-bis(trifluoromethyl)-1,3-dioxole and tetrafluoroethylene] is described in stabilizing phosphonate-derivatized molecular assemblies on oxide electrodes. In the procedure, the polymer was dip-coated onto the surfaces of oxide electrodes with pre-bound, phosphonate-derivatized chromophores and assemblies, including assemblies for water oxidation. The results of the experiments showed a high degree of stabilization by the added polymer and a demonstration of its use in stabilizing surface-bound assemblies for water-oxidation catalysis.
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Affiliation(s)
- Michael S Eberhart
- Department of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel Hill, North Carolina, 27599, USA
| | - Kyung-Ryang Wee
- Department of Chemistry, Daegu University, Gyeongsan 712-714, Republic of Korea
| | - Seth Marquard
- Department of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel Hill, North Carolina, 27599, USA
| | - Kasey Skinner
- Department of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel Hill, North Carolina, 27599, USA
| | - Degao Wang
- Department of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel Hill, North Carolina, 27599, USA
| | - Animesh Nayak
- Department of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel Hill, North Carolina, 27599, USA
| | - Thomas J Meyer
- Department of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel Hill, North Carolina, 27599, USA
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53
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Cheng F, He C, Yu S. Two trinuclear Ru(II) complexes of hetero-tritopic bridging ligands: synthesis, characterization, theoretical calculations, photophysical and electrochemical properties. TRANSIT METAL CHEM 2017. [DOI: 10.1007/s11243-017-0142-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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54
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Queyriaux N, Wahyuono RA, Fize J, Gablin C, Wächtler M, Martinez E, Léonard D, Dietzek B, Artero V, Chavarot-Kerlidou M. Aqueous Photocurrent Measurements Correlated to Ultrafast Electron Transfer Dynamics at Ruthenium Tris Diimine-Sensitized NiO Photocathodes. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2017; 121:5891-5904. [PMID: 28676835 PMCID: PMC5493983 DOI: 10.1021/acs.jpcc.6b12536] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Understanding the structural and electronic factors governing the efficiency of dye-sensitized NiO photocathodes is essential to optimize solar fuel production in photoelectrochemical cells (PECs). For these purpose, three different ruthenium dyes, bearing either two or four methylphosphonate anchoring groups and either a bipyridine or a dipyridophenazine ancillary ligand, were synthesized and grafted onto NiO films. These photoelectrodes were fully characterized by XPS, ToF-SIMS, UV-vis absorption, time-resolved emission and femtosecond transient absorption spectroscopies. Increasing the number of anchoring groups from two to four proved beneficial for the grafting efficiency. No significant modification of the electronic properties compared to the parent photosensitizer was observed, in accordance with the non-conjugated nature of the grafted linker. The photoelectrochemical activity of the dye-sensitized NiO electrodes was assessed in fully aqueous medium in the presence of an irreversible electron acceptor and photocurrents reaching 190 μA.cm-2 were recorded. The transient absorption study revealed the presence of two charge recombination pathways for each of the sensitizers and evidenced a stabilized charge separated state in the dppz derivative, supporting its superior photoelectrochemical activity.
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Affiliation(s)
- Nicolas Queyriaux
- Laboratoire de Chimie et Biologie des Métaux, UMR 5249 University Grenoble Alpes, CNRS, CEA, 17 rue des Martyrs, 38000 Grenoble, France
| | - Ruri A. Wahyuono
- Leibniz Institute of Photonic Technology (IPHT) Jena e. V., Albert-Einstein-Strasse 9, Jena 07745, Germany
- Institute for Physical Chemistry and Center for Energy and Environmental Chemistry, Friedrich Schiller University Jena, Helmholtzweg 4, Jena 07743, Germany
| | - Jennifer Fize
- Laboratoire de Chimie et Biologie des Métaux, UMR 5249 University Grenoble Alpes, CNRS, CEA, 17 rue des Martyrs, 38000 Grenoble, France
| | - Corinne Gablin
- Institut des Sciences Analytiques, UMR 5280 (Université Claude Bernard Lyon 1 /CNRS / ENS de Lyon), 5 rue de la Doua, 69100 Villeurbanne, France
| | - Maria Wächtler
- Leibniz Institute of Photonic Technology (IPHT) Jena e. V., Albert-Einstein-Strasse 9, Jena 07745, Germany
- Institute for Physical Chemistry and Center for Energy and Environmental Chemistry, Friedrich Schiller University Jena, Helmholtzweg 4, Jena 07743, Germany
| | - Eugénie Martinez
- CEA, Leti, MINATEC Campus, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France
| | - Didier Léonard
- Institut des Sciences Analytiques, UMR 5280 (Université Claude Bernard Lyon 1 /CNRS / ENS de Lyon), 5 rue de la Doua, 69100 Villeurbanne, France
| | - Benjamin Dietzek
- Leibniz Institute of Photonic Technology (IPHT) Jena e. V., Albert-Einstein-Strasse 9, Jena 07745, Germany
- Institute for Physical Chemistry and Center for Energy and Environmental Chemistry, Friedrich Schiller University Jena, Helmholtzweg 4, Jena 07743, Germany
| | - Vincent Artero
- Laboratoire de Chimie et Biologie des Métaux, UMR 5249 University Grenoble Alpes, CNRS, CEA, 17 rue des Martyrs, 38000 Grenoble, France
| | - Murielle Chavarot-Kerlidou
- Laboratoire de Chimie et Biologie des Métaux, UMR 5249 University Grenoble Alpes, CNRS, CEA, 17 rue des Martyrs, 38000 Grenoble, France
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55
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Materna KL, Crabtree RH, Brudvig GW. Anchoring groups for photocatalytic water oxidation on metal oxide surfaces. Chem Soc Rev 2017. [DOI: 10.1039/c7cs00314e] [Citation(s) in RCA: 153] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The synthesis, binding modes, water stability, and electron-transfer dynamics are compared for carboxylate, phosphonate, hydroxamate, and silatrane anchoring groups.
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Affiliation(s)
- Kelly L. Materna
- Department of Chemistry
- Yale University
- New Haven
- USA
- Yale Energy Sciences Institute
| | - Robert H. Crabtree
- Department of Chemistry
- Yale University
- New Haven
- USA
- Yale Energy Sciences Institute
| | - Gary W. Brudvig
- Department of Chemistry
- Yale University
- New Haven
- USA
- Yale Energy Sciences Institute
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56
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Sinopoli A, Black FA, Wood CJ, Gibson EA, Elliott PIP. Investigation of a new bis(carboxylate)triazole-based anchoring ligand for dye solar cell chromophore complexes. Dalton Trans 2017; 46:1520-1530. [DOI: 10.1039/c6dt02905a] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A novel anchoring ligand for dye-sensitised solar cell chromophoric complexes, 1-(2,2′-bipyrid-4-yl)-1,2,3-triazole-4,5-dicarboxylic acid (dctzbpy), is described.
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Affiliation(s)
| | - Fiona A. Black
- School of Chemistry
- Newcastle University
- Newcastle upon Tyne
- UK
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57
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Oehrlein AN, Sanchez-Diaz A, Goff PC, Ziegler GM, Pappenfus TM, Mann KR, Blank DA, Gladfelter WL. Effects of a phosphonate anchoring group on the excited state electron transfer rates from a terthiophene chromophore to a ZnO nanocrystal. Phys Chem Chem Phys 2017; 19:24294-24303. [DOI: 10.1039/c7cp03784h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Relative to carboxyl-anchored chromophores, phosphonate-anchored dyes are bound more strongly but slow the excited state electron transfer to ZnO nanocrystals.
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Affiliation(s)
- Amanda N. Oehrlein
- Department of Chemistry
- University of Minnesota-Twin Cities
- Minneapolis
- USA
| | | | - Philip C. Goff
- Department of Chemistry
- University of Minnesota-Twin Cities
- Minneapolis
- USA
| | | | - Ted M. Pappenfus
- Division of Science and Mathematics
- University of Minnesota-Morris
- Morris
- USA
| | - Kent R. Mann
- Department of Chemistry
- University of Minnesota-Twin Cities
- Minneapolis
- USA
| | - David A. Blank
- Department of Chemistry
- University of Minnesota-Twin Cities
- Minneapolis
- USA
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58
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Takijiri K, Morita K, Nakazono T, Sakai K, Ozawa H. Highly stable chemisorption of dyes with pyridyl anchors over TiO2: application in dye-sensitized photoelectrochemical water reduction in aqueous media. Chem Commun (Camb) 2017; 53:3042-3045. [DOI: 10.1039/c6cc10321a] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The “pyridyl anchoring technique” enables constant photocurrent density in a water reduction dye-sensitized photoelectrochemical cell with a polypyridyl ruthenium sensitizer having pyridyl anchors (Ru-py).
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Affiliation(s)
- Kohei Takijiri
- Department of Chemistry
- Faculty of Science
- Kyushu University
- Nishi-ku
- Japan
| | - Kohei Morita
- Department of Chemistry
- Faculty of Science
- Kyushu University
- Nishi-ku
- Japan
| | - Takashi Nakazono
- Department of Chemistry
- Faculty of Science
- Kyushu University
- Nishi-ku
- Japan
| | - Ken Sakai
- Department of Chemistry
- Faculty of Science
- Kyushu University
- Nishi-ku
- Japan
| | - Hironobu Ozawa
- Education Center for Global Leaders in Molecular Systems for Devices
- Kyushu University
- Nishi-ku
- Japan
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59
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Ainsworth EV, Lockwood CWJ, White GF, Hwang ET, Sakai T, Gross MA, Richardson DJ, Clarke TA, Jeuken LJC, Reisner E, Butt JN. Photoreduction of Shewanella oneidensis Extracellular Cytochromes by Organic Chromophores and Dye-Sensitized TiO 2. Chembiochem 2016; 17:2324-2333. [PMID: 27685371 PMCID: PMC5215560 DOI: 10.1002/cbic.201600339] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Indexed: 12/28/2022]
Abstract
The transfer of photoenergized electrons from extracellular photosensitizers across a bacterial cell envelope to drive intracellular chemical transformations represents an attractive way to harness nature's catalytic machinery for solar-assisted chemical synthesis. In Shewanella oneidensis MR-1 (MR-1), trans-outer-membrane electron transfer is performed by the extracellular cytochromes MtrC and OmcA acting together with the outer-membrane-spanning porin⋅cytochrome complex (MtrAB). Here we demonstrate photoreduction of solutions of MtrC, OmcA, and the MtrCAB complex by soluble photosensitizers: namely, eosin Y, fluorescein, proflavine, flavin, and adenine dinucleotide, as well as by riboflavin and flavin mononucleotide, two compounds secreted by MR-1. We show photoreduction of MtrC and OmcA adsorbed on RuII -dye-sensitized TiO2 nanoparticles and that these protein-coated particles perform photocatalytic reduction of solutions of MtrC, OmcA, and MtrCAB. These findings provide a framework for informed development of strategies for using the outer-membrane-associated cytochromes of MR-1 for solar-driven microbial synthesis in natural and engineered bacteria.
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Affiliation(s)
- Emma V. Ainsworth
- School of ChemistryUniversity of East AngliaNorwich Research ParkNorfolkNR4 7TJUK
| | - Colin W. J. Lockwood
- School of ChemistryUniversity of East AngliaNorwich Research ParkNorfolkNR4 7TJUK
| | - Gaye F. White
- School of Biological SciencesUniversity of East AngliaNorwich Research ParkNorfolkNR4 7TJUK
| | - Ee Taek Hwang
- School of Biomedical SciencesUniversity of LeedsLeedsLS2 9JTUK
| | - Tsubasa Sakai
- Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
- Present address: Suntory Foundation for Life SciencesKyoto619-0284Japan
| | - Manuela A. Gross
- Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
| | - David J. Richardson
- School of Biological SciencesUniversity of East AngliaNorwich Research ParkNorfolkNR4 7TJUK
| | - Thomas A. Clarke
- School of Biological SciencesUniversity of East AngliaNorwich Research ParkNorfolkNR4 7TJUK
| | | | - Erwin Reisner
- Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
| | - Julea N. Butt
- School of ChemistryUniversity of East AngliaNorwich Research ParkNorfolkNR4 7TJUK
- School of Biological SciencesUniversity of East AngliaNorwich Research ParkNorfolkNR4 7TJUK
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60
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Interfacial self-assembly, characterization, electrochemical, and photo-catalytic properties of porphyrin-ruthenium complex/polyoxomelate triad hybrid multilayers. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.08.083] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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61
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Ogunsolu OO, Murphy IA, Wang JC, Das A, Hanson K. Energy and Electron Transfer Cascade in Self-Assembled Bilayer Dye-Sensitized Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2016; 8:28633-28640. [PMID: 27700038 DOI: 10.1021/acsami.6b09955] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Current high efficiency dye-sensitized solar cells (DSSCs) rely on the incorporation of multiple chromophores, via either codeposition or preformed assemblies, as a means of increasing broad band light absorption. These strategies have some inherent limitations including decreased total light absorption by each of the dyes, low surface loadings, and complex synthetic procedures. In this report, we introduce an alternative strategy, self-assembled bilayers, as a simple, stepwise method of incorporating two complementary chromophores into a DSSC. The bilayer devices exhibit a 10% increase in Jsc, Voc, and η over the monolayer devices due to increased incident photon-to-electron conversion efficiency across the entire visible spectrum and slowed recombination losses at the interface. Directional energy and electron transfer toward the metal oxide surface are key steps in the bilayer photon-to-current generation process. These results are important as they open the door to a new architecture for harnessing broadband light in dye-sensitized devices.
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Affiliation(s)
- Omotola O Ogunsolu
- Materials Science and Engineering and ‡Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306, United States
| | - Ian A Murphy
- Materials Science and Engineering and ‡Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306, United States
| | - Jamie C Wang
- Materials Science and Engineering and ‡Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306, United States
| | - Anjan Das
- Materials Science and Engineering and ‡Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306, United States
| | - Kenneth Hanson
- Materials Science and Engineering and ‡Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306, United States
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62
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Yamamoto M, Tanaka K. Artificial Molecular Photosynthetic Systems: Towards Efficient Photoelectrochemical Water Oxidation. Chempluschem 2016; 81:1028-1044. [DOI: 10.1002/cplu.201600236] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Masanori Yamamoto
- Department of Molecular Engineering; Graduate School of Engineering; Kyoto University; Nishikyo-ku Kyoto 615-8510 Japan
| | - Koji Tanaka
- Advanced Chemical Technology Center in Kyoto; Institute for Integrated Cell-Material Sciences; Kyoto University; Jibucho 105, Fushimi-ku Kyoto 612-8374 Japan
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63
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Braumüller M, Staniszewska M, Guthmuller J, Rau S. CLICK 'n' Sleep: Light-Switch Behavior of Triazole-Containing Tris(bipyridyl)ruthenium Complexes. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600964] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Markus Braumüller
- Anorganische Chemie I; Universität Ulm; Albert-Einstein-Allee 11 89081 Ulm Germany
| | - Magdalena Staniszewska
- Faculty of Applied Physics and Mathematics; Gdańsk University of Technology; Narutowicza 11/12 80-233 Gdańsk Poland
| | - Julien Guthmuller
- Faculty of Applied Physics and Mathematics; Gdańsk University of Technology; Narutowicza 11/12 80-233 Gdańsk Poland
| | - Sven Rau
- Anorganische Chemie I; Universität Ulm; Albert-Einstein-Allee 11 89081 Ulm Germany
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64
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Brennaman MK, Dillon RJ, Alibabaei L, Gish MK, Dares CJ, Ashford DL, House RL, Meyer GJ, Papanikolas JM, Meyer TJ. Finding the Way to Solar Fuels with Dye-Sensitized Photoelectrosynthesis Cells. J Am Chem Soc 2016; 138:13085-13102. [PMID: 27654634 DOI: 10.1021/jacs.6b06466] [Citation(s) in RCA: 212] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The dye-sensitized photoelectrosynthesis cell (DSPEC) integrates high bandgap, nanoparticle oxide semiconductors with the light-absorbing and catalytic properties of designed chromophore-catalyst assemblies. The goals are photoelectrochemical water splitting into hydrogen and oxygen and reduction of CO2 by water to give oxygen and carbon-based fuels. Solar-driven water oxidation occurs at a photoanode and water or CO2 reduction at a cathode or photocathode initiated by molecular-level light absorption. Light absorption is followed by electron or hole injection, catalyst activation, and catalytic water oxidation or water/CO2 reduction. The DSPEC is of recent origin but significant progress has been made. It has the potential to play an important role in our energy future.
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Affiliation(s)
- M Kyle Brennaman
- Department of Chemistry, University of North Carolina at Chapel Hill , CB#3290, Chapel Hill, North Carolina 27599-3290, United States
| | - Robert J Dillon
- Department of Chemistry, University of North Carolina at Chapel Hill , CB#3290, Chapel Hill, North Carolina 27599-3290, United States
| | - Leila Alibabaei
- Department of Chemistry, University of North Carolina at Chapel Hill , CB#3290, Chapel Hill, North Carolina 27599-3290, United States
| | - Melissa K Gish
- Department of Chemistry, University of North Carolina at Chapel Hill , CB#3290, Chapel Hill, North Carolina 27599-3290, United States
| | - Christopher J Dares
- Department of Chemistry, University of North Carolina at Chapel Hill , CB#3290, Chapel Hill, North Carolina 27599-3290, United States
| | - Dennis L Ashford
- Department of Chemistry, University of North Carolina at Chapel Hill , CB#3290, Chapel Hill, North Carolina 27599-3290, United States
| | - Ralph L House
- Department of Chemistry, University of North Carolina at Chapel Hill , CB#3290, Chapel Hill, North Carolina 27599-3290, United States
| | - Gerald J Meyer
- Department of Chemistry, University of North Carolina at Chapel Hill , CB#3290, Chapel Hill, North Carolina 27599-3290, United States
| | - John M Papanikolas
- Department of Chemistry, University of North Carolina at Chapel Hill , CB#3290, Chapel Hill, North Carolina 27599-3290, United States
| | - Thomas J Meyer
- Department of Chemistry, University of North Carolina at Chapel Hill , CB#3290, Chapel Hill, North Carolina 27599-3290, United States
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65
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Silicon Compound Decorated Photoanode for Performance Enhanced Visible Light Driven Water Splitting. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.08.152] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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66
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Coe BJ, Foxon SP, Pilkington RA, Sánchez S, Whittaker D, Clays K, Van Steerteghem N, Brunschwig BS. Rhenium(I) Tricarbonyl Complexes with Peripheral N-Coordination Sites: A Foundation for Heterotrimetallic Nonlinear Optical Chromophores. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00536] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Benjamin J. Coe
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Simon P. Foxon
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Rachel A. Pilkington
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Sergio Sánchez
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Daniel Whittaker
- School
of Chemistry, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K
| | - Koen Clays
- Department
of Chemistry, University of Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium
| | - Nick Van Steerteghem
- Department
of Chemistry, University of Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium
| | - Bruce S. Brunschwig
- Molecular
Materials Research Center, Beckman Institute, MC 139-74, California Institute of Technology, 1200 East California Boulevard, Pasadena, California 91125, United States
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67
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Cui Y, Hao Y, Zhang Y, Liu B, Zhu X, Qu P, Li D, Xu M. A water-soluble and retrievable ruthenium-based probe for colorimetric recognition of Hg(II) and Cys. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 165:150-154. [PMID: 27131874 DOI: 10.1016/j.saa.2016.04.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Revised: 04/02/2016] [Accepted: 04/04/2016] [Indexed: 06/05/2023]
Abstract
A new ruthenium-based complex 1 [(bis(4,4'-dimethylphosphonic-2,2'-bipyridine) dithiocyanato ruthenium (II))] was developed as a colorimetric probe for the detection of Hg(II) and Cys (Cysteine). The obtained compound 1 can give interconversional color changes upon the alternating addition of Hg(II) and Cys in 100% aqueous solution. The specific coordination between NCS groups with Hg(II) can lead to the formation of 1-Hg(2+) complex, which can induce a remarkable spectral changes of probe 1. Afterwards the formed 1-Hg(2+) complex can act as effective colorimetric sensor for Cys. Owing to the stronger binding affinity of sulfhydryl group to Hg(2+), Cys can extract Hg(2+) from 1-Hg(2+) complex resulting in the release of 1 and the revival of absorption profile of the probe 1. By introducing the hydrophilic phosphonic acid groups, the proposed probe exhibited excellent water solubility. The limits of detection (LODs) of the assay for Hg(2+) and Cys are calculated to be 15nM and 200nM, respectively.
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Affiliation(s)
- Yali Cui
- Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, China
| | - Yuanqiang Hao
- Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, Henan, China.
| | - Yintang Zhang
- Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, Henan, China
| | - Baoxia Liu
- Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, Henan, China
| | - Xu Zhu
- Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, Henan, China
| | - Peng Qu
- Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, Henan, China
| | - Deliang Li
- Institute of Environmental and Analytical Sciences, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, China.
| | - Maotian Xu
- Henan Key Laboratory of Biomolecular Recognition and Sensing, College of Chemistry and Chemical Engineering, Shangqiu Normal University, Shangqiu 476000, Henan, China.
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68
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Caramori S, Ronconi F, Argazzi R, Carli S, Boaretto R, Busatto E, Bignozzi CA. Solar Energy Conversion in Photoelectrochemical Systems. ACTA ACUST UNITED AC 2016. [DOI: 10.1007/978-3-319-31671-0_2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
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69
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Telleria A, Kohlrausch BSEC, da C. Duarte R, Rodembusch FS, Dupont J, Freixa Z, Santos MJL. Synthesis and Characterization of Diethylphosphonate and Carboxylate-appended Iridium Complexes for the Application on Dye-Sensitized Solar Cells. ChemistrySelect 2016. [DOI: 10.1002/slct.201600700] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ainara Telleria
- Department of Applied Chemistry; Faculty of Chemistry; University of the Basque Country (UPV-EHU); San Sebastián Spain
| | - B. S. Emerson C. Kohlrausch
- Laboratory of Applied Materials and Interfaces; Universidade Federal do Rio Grande do Sul -; Instituto de Química; Avenida Bento Gonçalves 9500. CEP 91501-970 Porto Alegre-RS Brazil
| | - Rodrigo da C. Duarte
- Laboratory of Applied Materials and Interfaces; Universidade Federal do Rio Grande do Sul -; Instituto de Química; Avenida Bento Gonçalves 9500. CEP 91501-970 Porto Alegre-RS Brazil
- Grupo de Pesquisa em Fotoquímica Orgânica Aplicada; Universidade Federal do Rio Grande do Sul -; Instituto de Química; Avenida Bento Gonçalves 9500. CEP 91501-970 Porto Alegre-RS Brazil
| | - Fabiano S. Rodembusch
- Grupo de Pesquisa em Fotoquímica Orgânica Aplicada; Universidade Federal do Rio Grande do Sul -; Instituto de Química; Avenida Bento Gonçalves 9500. CEP 91501-970 Porto Alegre-RS Brazil
| | - Jairton Dupont
- School of Chemistry; University of Nottingham; University Park Nottingham NG7 2RD UK
| | - Zoraida Freixa
- Department of Applied Chemistry; Faculty of Chemistry; University of the Basque Country (UPV-EHU); San Sebastián Spain
- IKERBASQUE; Basque Foundation for Science; Bilbao Spain
| | - Marcos J. L. Santos
- Laboratory of Applied Materials and Interfaces; Universidade Federal do Rio Grande do Sul -; Instituto de Química; Avenida Bento Gonçalves 9500. CEP 91501-970 Porto Alegre-RS Brazil
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70
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McCool NS, Swierk JR, Nemes CT, Saunders TP, Schmuttenmaer CA, Mallouk TE. Proton-Induced Trap States, Injection and Recombination Dynamics in Water-Splitting Dye-Sensitized Photoelectrochemical Cells. ACS APPLIED MATERIALS & INTERFACES 2016; 8:16727-16735. [PMID: 27295276 DOI: 10.1021/acsami.6b05362] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Water-splitting dye-sensitized photoelectrochemical cells (WS-DSPECs) utilize a sensitized metal oxide and a water oxidation catalyst in order to generate hydrogen and oxygen from water. Although the Faradaic efficiency of water splitting is close to unity, the recombination of photogenerated electrons with oxidized dye molecules causes the quantum efficiency of these devices to be low. It is therefore important to understand recombination mechanisms in order to develop strategies to minimize them. In this paper, we discuss the role of proton intercalation in the formation of recombination centers. Proton intercalation forms nonmobile surface trap states that persist on time scales that are orders of magnitude longer than the electron lifetime in TiO2. As a result of electron trapping, recombination with surface-bound oxidized dye molecules occurs. We report a method for effectively removing the surface trap states by mildly heating the electrodes under vacuum, which appears to primarily improve the injection kinetics without affecting bulk trapping dynamics, further stressing the importance of proton control in WS-DSPECs.
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Affiliation(s)
| | - John R Swierk
- Department of Chemistry and Engineering Sciences Institute, Yale University , 225 Prospect Street, P.O. Box 208107, New Haven, Connecticut 06520-8107, United States
| | - Coleen T Nemes
- Department of Chemistry and Engineering Sciences Institute, Yale University , 225 Prospect Street, P.O. Box 208107, New Haven, Connecticut 06520-8107, United States
| | | | - Charles A Schmuttenmaer
- Department of Chemistry and Engineering Sciences Institute, Yale University , 225 Prospect Street, P.O. Box 208107, New Haven, Connecticut 06520-8107, United States
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71
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Pastori G, Wahab K, Bucci A, Bellachioma G, Zuccaccia C, Llorca J, Idriss H, Macchioni A. Heterogenized Water Oxidation Catalysts Prepared by Immobilizing Kläui-Type Organometallic Precursors. Chemistry 2016; 22:13459-63. [DOI: 10.1002/chem.201602008] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Gabriele Pastori
- Department of Chemistry, Biology and Biotechnology and CIRCC; University of Perugia; Via Elce di Sotto 8 06123 Perugia Italy
| | - Khaja Wahab
- Corporate Research and Development (CRD) Centre at SABIC-KAUST P.O. Box 4545-4700; Thuwal 23955 Saudi Arabia
| | - Alberto Bucci
- Department of Chemistry, Biology and Biotechnology and CIRCC; University of Perugia; Via Elce di Sotto 8 06123 Perugia Italy
| | - Gianfranco Bellachioma
- Department of Chemistry, Biology and Biotechnology and CIRCC; University of Perugia; Via Elce di Sotto 8 06123 Perugia Italy
| | - Cristiano Zuccaccia
- Department of Chemistry, Biology and Biotechnology and CIRCC; University of Perugia; Via Elce di Sotto 8 06123 Perugia Italy
| | - Jordi Llorca
- Institute of Energy Technologies and Centre for Research in Nanoengineering; Universitat Politècnica de Catalunya; Diagonal 647 08028 Barcelona Spain
| | - Hicham Idriss
- Corporate Research and Development (CRD) Centre at SABIC-KAUST P.O. Box 4545-4700; Thuwal 23955 Saudi Arabia
| | - Alceo Macchioni
- Department of Chemistry, Biology and Biotechnology and CIRCC; University of Perugia; Via Elce di Sotto 8 06123 Perugia Italy
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72
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Kobayashi A, Furugori S, Yoshida M, Kato M. Photocatalytic Water Oxidation Driven by Functionalized Ru(II) Photosensitizers: Effects of Molecular Charge and Immobilization of Molecular Photosensitizer. CHEM LETT 2016. [DOI: 10.1246/cl.160146] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Atsushi Kobayashi
- Department of Chemistry, Faculty of Science, Hokkaido University
- Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST)
| | - Sogo Furugori
- Department of Chemistry, Faculty of Science, Hokkaido University
| | - Masaki Yoshida
- Department of Chemistry, Faculty of Science, Hokkaido University
| | - Masako Kato
- Department of Chemistry, Faculty of Science, Hokkaido University
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73
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Gross MA, Creissen CE, Orchard KL, Reisner E. Photoelectrochemical hydrogen production in water using a layer-by-layer assembly of a Ru dye and Ni catalyst on NiO. Chem Sci 2016; 7:5537-5546. [PMID: 30034695 PMCID: PMC6021778 DOI: 10.1039/c6sc00715e] [Citation(s) in RCA: 104] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Accepted: 05/07/2016] [Indexed: 12/23/2022] Open
Abstract
Layer-by-layer assembly of a Ru dye and Ni catalyst on a p-type NiO photocathode enables photoelectrochemical H2 generation in water.
Capture and conversion of sunlight into the storable energy carrier H2 can be achieved through photoelectrochemical water splitting using light-absorbing cathodes and anodes bearing H2 and O2 evolving catalysts. Here, we report on the development of a dye-sensitised p-type nickel oxide (NiO) photocathode with a hexaphosphonated Ru(2,2′-bipyridine)3 based dye (RuP3) and a tetraphosphonated molecular [Ni(P2N2)2]2+ type proton reduction catalyst (NiP) for the photoreduction of aqueous protons to H2. A layer-by-layer deposition approach was employed, using Zr4+ ions to link the phosphonate units in RuP3 and NiP in a supramolecular assembly on the NiO photocathode. This approach keeps the dye in close proximity to the catalyst and semiconductor surface, but spatially separates NiP from NiO for advantageous electron transfer dynamics. The NiO|RuP3–Zr4+–NiP electrodes generate higher photocurrents and are more stable than photocathodes with RuP3 and NiP co-immobilised on the NiO surface in the absence of Zr4+ cations linking dye and catalyst. The generation of H2 with the NiO|RuP3–Zr4+–NiP hybrid electrode in pH 3 aqueous electrolyte solution during irradiation with a UV-filtered solar light simulator (λ > 400 nm, 100 mW cm–2, AM1.5G) has been confirmed by gas chromatography at an underpotential of 300 mV (Eappl = +0.3 V vs. RHE), demonstrating the potential of these electrodes to store solar energy in the chemical bond of H2.
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Affiliation(s)
- Manuela A Gross
- Christian Doppler Laboratory for Sustainable SynGas Chemistry , Lensfield Road , CB2 1EW Cambridge , UK .
| | - Charles E Creissen
- Christian Doppler Laboratory for Sustainable SynGas Chemistry , Lensfield Road , CB2 1EW Cambridge , UK .
| | - Katherine L Orchard
- Christian Doppler Laboratory for Sustainable SynGas Chemistry , Lensfield Road , CB2 1EW Cambridge , UK .
| | - Erwin Reisner
- Christian Doppler Laboratory for Sustainable SynGas Chemistry , Lensfield Road , CB2 1EW Cambridge , UK .
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74
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O'Donnell RM, Sampaio RN, Li G, Johansson PG, Ward CL, Meyer GJ. Photoacidic and Photobasic Behavior of Transition Metal Compounds with Carboxylic Acid Group(s). J Am Chem Soc 2016; 138:3891-903. [PMID: 26901780 DOI: 10.1021/jacs.6b00454] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Excited state proton transfer studies of six Ru polypyridyl compounds with carboxylic acid/carboxylate group(s) revealed that some were photoacids and some were photobases. The compounds [Ru(II)(btfmb)2(LL)](2+), [Ru(II)(dtb)2(LL)](2+), and [Ru(II)(bpy)2(LL)](2+), where bpy is 2,2'-bipyridine, btfmb is 4,4'-(CF3)2-bpy, and dtb is 4,4'-((CH3)3C)2-bpy, and LL is either dcb = 4,4'-(CO2H)2-bpy or mcb = 4-(CO2H),4'-(CO2Et)-2,2'-bpy, were synthesized and characterized. The compounds exhibited intense metal-to-ligand charge-transfer (MLCT) absorption bands in the visible region and room temperature photoluminescence (PL) with long τ > 100 ns excited state lifetimes. The mcb compounds had very similar ground state pKa's of 2.31 ± 0.07, and their characterization enabled accurate determination of the two pKa values for the commonly utilized dcb ligand, pKa1 = 2.1 ± 0.1 and pKa2 = 3.0 ± 0.2. Compounds with the btfmb ligand were photoacidic, and the other compounds were photobasic. Transient absorption spectra indicated that btfmb compounds displayed a [Ru(III)(btfmb(-))L2](2+)* localized excited state and a [Ru(III)(dcb(-))L2](2+)* formulation for all the other excited states. Time dependent PL spectral shifts provided the first kinetic data for excited state proton transfer in a transition metal compound. PL titrations, thermochemical cycles, and kinetic analysis (for the mcb compounds) provided self-consistent pKa* values. The ability to make a single ionizable group photobasic or photoacidic through ligand design was unprecedented and was understood based on the orientation of the lowest-lying MLCT excited state dipole relative to the ligand that contained the carboxylic acid group(s).
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Affiliation(s)
- Ryan M O'Donnell
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599, United States
| | - Renato N Sampaio
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599, United States
| | - Guocan Li
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599, United States
| | - Patrik G Johansson
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599, United States
| | - Cassandra L Ward
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599, United States
| | - Gerald J Meyer
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599, United States
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75
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Mishima K, Kinoshita T, Hayashi M, Jono R, Segawa H, Yamashita K. Theoretical investigation of [Ru(tpy)2]2+, [Ru(tpy)(bpy)(H2O)]2+ and [Ru(tpy)(bpy)(Cl)]+ complexes in acetone revisited: Inclusion of strong spin–orbit couplings to quantum chemistry calculations. JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2016. [DOI: 10.1142/s0219633616500012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In the present paper, we theoretically reinvestigate structural properties, and photo-physical and chemical characteristics and electronic absorption spectra of three kinds of ruthenium polypyridyl complexes [Ru(tpy)[Formula: see text], [Ru(tpy)(bpy)(H2O)][Formula: see text], and [Ru(tpy)(bpy)(Cl)][Formula: see text] complexes in acetone (tpy[Formula: see text]2,2[Formula: see text],2[Formula: see text]-terpyridine and bpy[Formula: see text]2,2[Formula: see text]-bipyridine). In particular, the experimental absorption spectra of these complexes are revisited theoretically in detail and are simulated using the first-order perturbation theory based on time-dependent density functional theory (TD-DFT) where the first-order perturbation term is the spin–orbit (SO) coupling Hamiltonian, and quantum chemistry calculations based on various functionals and basis sets. It was found that in general the theory including SO coupling can reproduce experimental data better than the simple quantum chemistry calculation neglecting SO coupling, which indicates that SO coupling is very important to understand the optical features of these complexes and that therefore the mixing between singlet and triplet states is strong due to the large SO coupling constant of Ru atom involved in these complexes. This suggests the fact that the disagreement between the experimental and calculated absorption spectra was found in TDB3LYP/(SDD with triple-[Formula: see text] for Ru and 6-31G* for others) [Jakubikova EJ et al., Inorg Chem 48:10720, 2009] can be tracked down to the neglect of SO couplings. It was also found that the choice of the DFT functionals and basis sets is crucial for a good theoretical reproduction of experimental data.
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Affiliation(s)
- Kenji Mishima
- Department of Chemical System Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Takumi Kinoshita
- Research Center for Advanced Science and Technology, The University of Tokyo 4-6-1, Komaba, Meguro-ku, Tokyo 153-8904, Japan
| | - Michitoshi Hayashi
- Center for Condensed Matter Sciences, National Taiwan University, Taipei 106, Taiwan
| | - Ryota Jono
- Department of Chemical System Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
| | - Hiroshi Segawa
- Research Center for Advanced Science and Technology, The University of Tokyo 4-6-1, Komaba, Meguro-ku, Tokyo 153-8904, Japan
| | - Koichi Yamashita
- Department of Chemical System Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo 113-8656, Japan
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76
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Kryman MW, Nasca JN, Watson DF, Detty MR. Selenorhodamine Dye-Sensitized Solar Cells: Influence of Structure and Surface-Anchoring Mode on Aggregation, Persistence, and Photoelectrochemical Performance. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:1521-1532. [PMID: 26791741 DOI: 10.1021/acs.langmuir.5b04275] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A library of six selenorhodamine dyes (4-Se-9-Se) were synthesized, characterized, and evaluated as photosensitizers of TiO2 in dye-sensitized solar cells (DSSCs). The dyes were constructed around either a bis(julolidyl)- or bis(half-julolidyl)-modified selenoxanthylium core functionalized at the 9-position with a thienyl group bearing a carboxylic, hydroxamic, or phosphonic acid for attachment to TiO2. Absorption bands of solvated dyes 4-Se-9-Se were red-shifted relative to the dimethylamino analogues. The dyes adsorbed to TiO2 as mixtures of monomeric and H-aggregated dyes, which exhibited broadened absorption spectra and increased light-harvesting efficiencies relative to the solvated monomeric dyes. Carboxylic acid-bearing dyes 4-Se and 7-Se initially exhibited the highest incident photon-to-current efficiencies (IPCEs) of 65-80% under monochromatic illumination, but the dyes desorbed rapidly from TiO2 into solutions of HCl (0.1 M) in a CH3CN:H2O mixed solvent (120:1 v:v). The hydroxamic acid- and phosphonic acid-bearing dyes 5-Se, 6-Se, 8-Se, and 9-Se exhibited lower IPCEs (49-65%) immediately after preparation of DSSCs; however, the dyes were vastly more inert on TiO2, and IPCEs decreased only minimally with successive measurements under constant illumination. Power-conversion efficiencies (PCEs) of the selenorhodamine-derived DSSCs were less than 1%, probably due to inefficient regeneration of the dyes following electron injection. For a given anchoring group, the bis(half-julolidyl) dyes exhibited higher open-circuit photovoltages and PCEs than the corresponding bis(julolidyl) dyes. The hydroxamic acid- and phosphonic acid-bearing dyes are intriguing photosensitizers of TiO2 in light of their aggregation-induced spectral broadening, high monochromatic IPCEs, and relative inertness to desorption into acidic media.
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Affiliation(s)
- Mark W Kryman
- Department of Chemistry, University at Buffalo, The State University of New York , Buffalo, New York 14260-3000, United States
| | - Justin N Nasca
- Department of Chemistry, University at Buffalo, The State University of New York , Buffalo, New York 14260-3000, United States
| | - David F Watson
- Department of Chemistry, University at Buffalo, The State University of New York , Buffalo, New York 14260-3000, United States
| | - Michael R Detty
- Department of Chemistry, University at Buffalo, The State University of New York , Buffalo, New York 14260-3000, United States
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77
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Köhler C, Rentschler E. Functionalized phosphonates as building units for multi-dimensional homo- and heterometallic 3d–4f inorganic–organic hybrid-materials. Dalton Trans 2016; 45:12854-61. [DOI: 10.1039/c6dt02023b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Using the multifunctional ligand H4L (2,2′-bipyridinyl-5,5′-diphosphonic acid), a new family of 0D-3D inorganic–organic hybrid-materials was prepared and characterized by single crystal diffraction and magnetic measurements.
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Affiliation(s)
- C. Köhler
- Institute of Inorganic and Analytical Chemistry
- Johannes Gutenberg University Mainz
- 55128 Mainz
- Germany
| | - E. Rentschler
- Institute of Inorganic and Analytical Chemistry
- Johannes Gutenberg University Mainz
- 55128 Mainz
- Germany
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78
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Zheng S, Wei Z, Yoshiiri K, Braumüller M, Ohtani B, Rau S, Kowalska E. Titania modification with a ruthenium(ii) complex and gold nanoparticles for photocatalytic degradation of organic compounds. Photochem Photobiol Sci 2016; 15:69-79. [DOI: 10.1039/c5pp00345h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Interaction between two kinds of titania modifiers, i.e., a ruthenium complex and gold nanoparticles, influenced the resultant properties and photocatalytic activities of hybrid photocatalysts under UV and/or vis light irradiation.
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Affiliation(s)
- Shuaizhi Zheng
- Institute for Catalysis
- Hokkaido University
- 001-0021 Sapporo
- Japan
- Institute of Inorganic Chemistry 1
| | - Zhishun Wei
- Institute for Catalysis
- Hokkaido University
- 001-0021 Sapporo
- Japan
| | - Kenta Yoshiiri
- Institute for Catalysis
- Hokkaido University
- 001-0021 Sapporo
- Japan
- Graduate School of Environmental Science
| | | | - Bunsho Ohtani
- Institute for Catalysis
- Hokkaido University
- 001-0021 Sapporo
- Japan
- Graduate School of Environmental Science
| | - Sven Rau
- Institute of Inorganic Chemistry 1
- Ulm University
- 89081 Ulm
- Germany
| | - Ewa Kowalska
- Institute for Catalysis
- Hokkaido University
- 001-0021 Sapporo
- Japan
- Graduate School of Environmental Science
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79
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Braumüller M, Schulz M, Staniszewska M, Sorsche D, Wunderlin M, Popp J, Guthmuller J, Dietzek B, Rau S. Synthesis and characterization of ruthenium and rhenium dyes with phosphonate anchoring groups. Dalton Trans 2016; 45:9216-28. [DOI: 10.1039/c6dt01047d] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The synthesis and characterization of new Ru and Re complexes with elongated phosphonate substituents are presented, enabling their immobilization on electrode surfaces.
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Affiliation(s)
| | - Martin Schulz
- Institute of Photonic Technology (IPHT) Jena e. V
- D-07745 Jena
- Germany
- Institute for Physical Chemistry and Abbe Centre of Photonics
- Friedrich-Schiller University Jena
| | - Magdalena Staniszewska
- Faculty of Applied Physics and Mathematics
- Gdańsk University of Technology
- 80-233 Gdańsk
- Poland
| | | | | | - Jürgen Popp
- Institute for Physical Chemistry and Abbe Centre of Photonics
- Friedrich-Schiller University Jena
- D-07743 Jena
- Germany
| | - Julien Guthmuller
- Faculty of Applied Physics and Mathematics
- Gdańsk University of Technology
- 80-233 Gdańsk
- Poland
| | - Benjamin Dietzek
- Institute of Photonic Technology (IPHT) Jena e. V
- D-07745 Jena
- Germany
- Institute for Physical Chemistry and Abbe Centre of Photonics
- Friedrich-Schiller University Jena
| | - Sven Rau
- Universität Ulm
- Anorganische Chemie I
- D-89081 Ulm
- Germany
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80
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Brennaman MK, Norris MR, Gish MK, Grumstrup EM, Alibabaei L, Ashford DL, Lapides AM, Papanikolas JM, Templeton JL, Meyer TJ. Ultrafast, Light-Induced Electron Transfer in a Perylene Diimide Chromophore-Donor Assembly on TiO2. J Phys Chem Lett 2015; 6:4736-42. [PMID: 26554498 DOI: 10.1021/acs.jpclett.5b02194] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Surface-bound, perylenediimide (PDI)-based molecular assemblies have been synthesized on nanocrystalline TiO2 by reaction of a dianhydride with a surface-bound aniline and succinimide bonding. In a second step, the Fe(II) polypyridyl complex [Fe(II)(tpy-PhNH2)2](2+) was added to the outside of the film, also by succinimide bonding. Ultrafast transient absorption measurements in 0.1 M HClO4 reveal that electron injection into TiO2 by (1)PDI* does not occur, but rather leads to the ultrafast formation of the redox-separated pair PDI(•+),PDI(•-), which decays with complex kinetics (τ1 = 0.8 ps, τ2 = 15 ps, and τ3 = 1500 ps). With the added Fe(II) polypyridyl complex, rapid (<25 ps) oxidation of Fe(II) by the PDI(•+),PDI(•-) redox pair occurs to give Fe(III),PDI(•-) persisting for >400 μs in the film environment.
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Affiliation(s)
- M Kyle Brennaman
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
| | - Michael R Norris
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
| | - Melissa K Gish
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
| | - Erik M Grumstrup
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
| | - Leila Alibabaei
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
| | - Dennis L Ashford
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
| | - Alexander M Lapides
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
| | - John M Papanikolas
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
| | - Joseph L Templeton
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
| | - Thomas J Meyer
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
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81
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Yamamoto M, Wang L, Li F, Fukushima T, Tanaka K, Sun L, Imahori H. Visible light-driven water oxidation using a covalently-linked molecular catalyst-sensitizer dyad assembled on a TiO 2 electrode. Chem Sci 2015; 7:1430-1439. [PMID: 29910901 PMCID: PMC5975926 DOI: 10.1039/c5sc03669k] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Accepted: 11/09/2015] [Indexed: 01/01/2023] Open
Abstract
The combination of porphyrin as a sensitizer and a ruthenium complex as a water oxidation catalyst (WOC) is promising to exploit highly efficient molecular artificial photosynthetic systems. A covalently-linked ruthenium-based WOC-zinc porphyrin (ZnP) sensitizer dyad was assembled on a TiO2 electrode for visible-light driven water oxidation. The water oxidation activity was found to be improved in comparison to the reference systems with the simple combination of the individual WOC and ZnP as well as with ZnP solely, demonstrating the advantage of the covalent linking approach over the non-covalent one. More importantly, via vectorial multi-step electron transfer triggered by visible light, the dye-sensitized photoelectrochemical cell (DSPEC) achieved a broader PEC response in the visible region than DSPECs with conventional ruthenium-based sensitizers. Initial incident photon-to-current efficiencies of 18% at 424 nm and 6.4% at 564 nm were attained under monochromatic illumination and an external bias of -0.2 V vs. NHE. Fast electron transfer from the WOC to the photogenerated radical cation of the sensitizer through the covalent linkage may suppress undesirable charge recombination, realizing the moderate performance of water oxidation. X-ray photoelectron spectroscopic analysis of the photoanodes before and after the DSPEC operation suggested that most of the ruthenium species exist at higher oxidation states, implying that the insufficient oxidation potential of the ZnP moiety for further oxidizing the intermediate ruthenium species at the photoanode is at least the bottleneck of the system.
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Affiliation(s)
- Masanori Yamamoto
- Department of Molecular Engineering , Graduate School of Engineering , Kyoto University , Nishikyo-ku , Kyoto 615-8510 , Japan .
| | - Lei Wang
- Department of Chemistry , School of Chemical Science and Engineering , KTH Royal Institute of Technology , 100 44 Stockholm , Sweden .
| | - Fusheng Li
- Department of Chemistry , School of Chemical Science and Engineering , KTH Royal Institute of Technology , 100 44 Stockholm , Sweden .
| | - Takashi Fukushima
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS) , Kyoto University , Nishikyo-ku , Kyoto 615-8510 , Japan
| | - Koji Tanaka
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS) , Kyoto University , Nishikyo-ku , Kyoto 615-8510 , Japan
| | - Licheng Sun
- Department of Chemistry , School of Chemical Science and Engineering , KTH Royal Institute of Technology , 100 44 Stockholm , Sweden .
| | - Hiroshi Imahori
- Department of Molecular Engineering , Graduate School of Engineering , Kyoto University , Nishikyo-ku , Kyoto 615-8510 , Japan . .,Institute for Integrated Cell-Material Sciences (WPI-iCeMS) , Kyoto University , Nishikyo-ku , Kyoto 615-8510 , Japan
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82
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Ashford DL, Gish MK, Vannucci AK, Brennaman MK, Templeton JL, Papanikolas JM, Meyer TJ. Molecular Chromophore–Catalyst Assemblies for Solar Fuel Applications. Chem Rev 2015; 115:13006-49. [DOI: 10.1021/acs.chemrev.5b00229] [Citation(s) in RCA: 363] [Impact Index Per Article: 40.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Dennis L. Ashford
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel
Hill, North Carolina 27599, United States
| | - Melissa K. Gish
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel
Hill, North Carolina 27599, United States
| | - Aaron K. Vannucci
- Department
of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - M. Kyle Brennaman
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel
Hill, North Carolina 27599, United States
| | - Joseph L. Templeton
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel
Hill, North Carolina 27599, United States
| | - John M. Papanikolas
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel
Hill, North Carolina 27599, United States
| | - Thomas J. Meyer
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel
Hill, North Carolina 27599, United States
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83
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Plegaria JS, Herrero C, Quaranta A, Pecoraro VL. Electron transfer activity of a de novo designed copper center in a three-helix bundle fold. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2015; 1857:522-530. [PMID: 26427552 DOI: 10.1016/j.bbabio.2015.09.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 09/18/2015] [Indexed: 11/29/2022]
Abstract
In this work, we characterized the intermolecular electron transfer (ET) properties of a de novo designed metallopeptide using laser-flash photolysis. α3D-CH3 is three helix bundle peptide that was designed to contain a copper ET site that is found in the β-barrel fold of native cupredoxins. The ET activity of Cuα3D-CH3 was determined using five different photosensitizers. By exhibiting a complete depletion of the photo-oxidant and the successive formation of a Cu(II) species at 400 nm, the transient and generated spectra demonstrated an ET transfer reaction between the photo-oxidant and Cu(I)α3D-CH3. This observation illustrated our success in integrating an ET center within a de novo designed scaffold. From the kinetic traces at 400 nm, first-order and bimolecular rate constants of 10(5) s(-1) and 10(8) M(-1) s(-1) were derived. Moreover, a Marcus equation analysis on the rate versus driving force study produced a reorganization energy of 1.1 eV, demonstrating that the helical fold of α3D requires further structural optimization to efficiently perform ET. This article is part of a Special Issue entitled Biodesign for Bioenergetics--the design and engineering of electronic transfer cofactors, proteins and protein networks, edited by Ronald L. Koder and J.L. Ross Anderson.
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Affiliation(s)
- Jefferson S Plegaria
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109, United States
| | - Christian Herrero
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, Université Paris Sud, CNRS, 91405 Orsay Cedex, France
| | | | - Vincent L Pecoraro
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109, United States.
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84
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Braumüller M, Sorsche D, Wunderlin M, Rau S. Modular Synthesis of Elongated Phosphonate Bipyridines. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500641] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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85
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Mishima K, Kinoshita T, Hayashi M, Jono R, Segawa H, Yamashita K, Lin SH. Theoretical studies on the absorption spectra of cis-[Ru(4,4'-COO-2,2'-bpy)2(X)2](4-), (X = NCS, Cl) and panchromatic trans-terpyridyl Ru complexes including strong spin-orbit coupling. Phys Chem Chem Phys 2015; 17:12317-27. [PMID: 25896092 DOI: 10.1039/c5cp00984g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this paper, we theoretically and experimentally investigate the photophysical and chemical characteristics and absorption spectra of various ruthenium complexes in solution used as efficient dye-sensitized solar cells. The target molecules are two well-known complexes, cis-[Ru(4,4'-COO-2,2'-bpy)2(X)2](4-), (X = NCS, Cl) and trans-terpyridyl Ru. The experimental absorption spectra of these molecules, which show strong spin-orbit (SO) coupling, are simulated using first-order perturbation theory based on time-dependent density functional theory and quantum chemistry calculations. It turns out that the theory can simulate the experimental data very well, which indicates that SO coupling is very important and the mixing between singlet and triplet states is strong in these molecules because of the large SO coupling constant of the Ru atom. The exact absorption spectra can only be reproduced by including the perturbation by SO coupling. The physical and chemical differences between cis-[Ru(4,4'-COO-2,2'-bpy)2(X)2](4-), (X = NCS, Cl) and trans-terpyridyl Ru complexes are elucidated by natural bond orbital and natural transition orbital analyses. From these analyses, we have found that the two kinds of Ru complexes are quite different in terms of photoexcitation response and chemical bonding between the central Ru atom and the surrounding ligands.
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Affiliation(s)
- Kenji Mishima
- Department of Chemical System Engineering, Graduate School of Engineering, The University of Tokyo, Tokyo, 113-8656, Japan.
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86
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Hyde JT, Hanson K, Vannucci AK, Lapides AM, Alibabaei L, Norris MR, Meyer TJ, Harrison DP. Electrochemical Instability of Phosphonate-Derivatized, Ruthenium(III) Polypyridyl Complexes on Metal Oxide Surfaces. ACS APPLIED MATERIALS & INTERFACES 2015; 7:9554-62. [PMID: 25871342 DOI: 10.1021/acsami.5b01000] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The oxidative stability of the molecular components of dye-sensitized photoelectrosynthesis cells for solar water splitting remains to be explored systematically. We report here the results of an electrochemical study on the oxidative stability of ruthenium(II) polypyridyl complexes surface-bound to fluorine-doped tin oxide electrodes in acidic solutions and, to a lesser extent, as a function of pH and solvent with electrochemical monitoring. Desorption occurs for the Ru(II) forms of the surface-bound complexes with oxidation to Ru(III) enhancing both desorption and decomposition. Based on the results of long-term potential hold experiments with cyclic voltammetry monitoring, electrochemical oxidation to Ru(III) results in slow decomposition of the complex by 2,2'-bipyridine ligand loss and aquation and/or anation. A similar pattern of ligand loss was also observed for a known chromophore-catalyst assembly for both electrochemical water oxidation and photoelectrochemical water splitting. Our results are significant in identifying the importance of enhancing chromophore stability, or at least transient stability, in oxidized forms in order to achieve stable performance in aqueous environments in photoelectrochemical devices.
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Affiliation(s)
- Jacob T Hyde
- †Department of Chemistry, Virginia Military Institute, Lexington, Virginia 24450, United States
| | - Kenneth Hanson
- ‡Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Aaron K Vannucci
- ‡Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Alexander M Lapides
- ‡Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Leila Alibabaei
- ‡Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Michael R Norris
- ‡Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Thomas J Meyer
- ‡Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Daniel P Harrison
- †Department of Chemistry, Virginia Military Institute, Lexington, Virginia 24450, United States
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87
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Ananthanarayanan A, Wang Y, Routh P, Sk MA, Than A, Lin M, Zhang J, Chen J, Sun H, Chen P. Nitrogen and phosphorus co-doped graphene quantum dots: synthesis from adenosine triphosphate, optical properties, and cellular imaging. NANOSCALE 2015; 7:8159-65. [PMID: 25875153 DOI: 10.1039/c5nr01519g] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Graphene quantum dots (GQDs) are emerging zero-dimensional materials promising a wide spectrum of applications, particularly, as superior fluorescent reporters for bio-imaging and optical sensing. Heteroatom doping can endow GQDs with new or improved photoluminescence properties. Here, we demonstrate a simple strategy for the synthesis of nitrogen and phosphorus co-doped GQDs from a single biomolecule precursor (adenosine triphosphate - ATP). Such ATP-GQDs exhibit high fluorescence quantum yield, strong two-photon upconversion, small molecular weight, high photostability, and good biocompatibility. Furthermore, transferrin conjugated ATP-GQDs have been used for imaging and real-time tracking of transferrin receptors in live cells.
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Affiliation(s)
- Arundithi Ananthanarayanan
- Bioengineering Program, School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457.
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88
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Pastore M, De Angelis F. First-Principles Modeling of a Dye-Sensitized TiO2/IrO2 Photoanode for Water Oxidation. J Am Chem Soc 2015; 137:5798-809. [DOI: 10.1021/jacs.5b02128] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Mariachiara Pastore
- Computational Laboratory
for Hybrid Organic Photovoltaics (CLHYO), CNR-ISTM, via Elce di Sotto 8, I-06123 Perugia, Italy
| | - Filippo De Angelis
- Computational Laboratory
for Hybrid Organic Photovoltaics (CLHYO), CNR-ISTM, via Elce di Sotto 8, I-06123 Perugia, Italy
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89
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Swords WB, Li G, Meyer GJ. Iodide Ion Pairing with Highly Charged Ruthenium Polypyridyl Cations in CH3CN. Inorg Chem 2015; 54:4512-9. [DOI: 10.1021/acs.inorgchem.5b00344] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Wesley B. Swords
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Guocan Li
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Gerald J. Meyer
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
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90
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Son HJ, Kim CH, Kim DW, Jeong NC, Prasittichai C, Luo L, Wu J, Farha OK, Wasielewski MR, Hupp JT. Post-assembly atomic layer deposition of ultrathin metal-oxide coatings enhances the performance of an organic dye-sensitized solar cell by suppressing dye aggregation. ACS APPLIED MATERIALS & INTERFACES 2015; 7:5150-5159. [PMID: 25695408 DOI: 10.1021/am507405b] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Dye aggregation and concomitant reduction of dye excited-state lifetimes and electron-injection yields constitute a significant mechanism for diminution of light-to-electrical energy conversion efficiencies in many dye-sensitized solar cells (DSCs). For TiO2-based DSCs prepared with an archetypal donor-acceptor organic dye, (E)-2-cyano-3-(5'-(5''-(p-(diphenylamino)phenyl)-thiophen-2''-yl)thiophen-2'-yl)acrylic acid (OrgD), we find, in part via ultrafast spectroscopy measurements, that postdye-adsorption atomic layer deposition (ALD) of ultrathin layers of either TiO2 or Al2O3 effectively reverses residual aggregation. Notably, the ALD treatment is significantly more effective than the widely used aggregation-inhibiting coadsorbent, chenodeoxycholic acid. Primarily because of reversal of OrgD aggregation, and resulting improved injection yields, ALD post-treatment engenders a 30+% increase in overall energy conversion efficiency. A secondary contributor to increased currents and efficiencies is an ALD-induced attenuation of the rate of interception of injected electrons, resulting in slightly more efficient charge collection.
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Affiliation(s)
- Ho-Jin Son
- Department of Chemistry, Northwestern University , Evanston, Illinois 60208, United States
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91
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Farnum BH, Morseth ZA, Brennaman MK, Papanikolas JM, Meyer TJ. Application of Degenerately Doped Metal Oxides in the Study of Photoinduced Interfacial Electron Transfer. J Phys Chem B 2015; 119:7698-711. [DOI: 10.1021/jp512624u] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Byron H. Farnum
- Department
of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599-3290, United States
| | - Zachary A. Morseth
- Department
of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599-3290, United States
| | - M. Kyle Brennaman
- Department
of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599-3290, United States
| | - John M. Papanikolas
- Department
of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599-3290, United States
| | - Thomas J. Meyer
- Department
of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599-3290, United States
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92
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Schindler J, Kupfer S, Wächtler M, Guthmuller J, Rau S, Dietzek B. Photophysics of a Ruthenium 4H-Imidazole Panchromatic Dye in Interaction with Titanium Dioxide. Chemphyschem 2015; 16:1061-70. [DOI: 10.1002/cphc.201402856] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Indexed: 11/11/2022]
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93
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Cheng F, He C, Yao L, Wang F, Tang N. Three trinuclear Ru(II) complexes containing 4,5-diazafluorene and 2,2′-bipyridine: synthesis, absorption spectrum, luminescence, and redox behavior. J COORD CHEM 2015. [DOI: 10.1080/00958972.2014.994512] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Feixiang Cheng
- College of Chemistry and Chemical Engineering, Qujing Normal University, Qujing, PR China
| | - Chixian He
- College of Chemistry and Chemical Engineering, Qujing Normal University, Qujing, PR China
| | - Lifeng Yao
- College of Chemistry and Chemical Engineering, Qujing Normal University, Qujing, PR China
| | - Fan Wang
- College of Chemistry and Chemical Engineering, Qujing Normal University, Qujing, PR China
| | - Ning Tang
- College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, PR China
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94
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Zhang W, Zhang HY, Zhang YH, Liu Y. Fluorescent supramolecular polypseudorotaxane architectures with Ru(ii)/tri(bipyridine) centers as multifunctional DNA reagents. Chem Commun (Camb) 2015; 51:16127-30. [DOI: 10.1039/c5cc07216f] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A water-soluble supramolecular polypseudorotaxane was prepared via the host–guest interaction of cucurbit[8]uril and the Ru(bpy)3 complex with bis-naphthalene groups.
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Affiliation(s)
- Wen Zhang
- Department of Chemistry
- State Key Laboratory of Elemento-Organic Chemistry
- Nankai University
- Collaborative Innovation Center of Chemical Science and Engineering
- Tianjin 300071
| | - Heng-Yi Zhang
- Department of Chemistry
- State Key Laboratory of Elemento-Organic Chemistry
- Nankai University
- Collaborative Innovation Center of Chemical Science and Engineering
- Tianjin 300071
| | - Yu-Hui Zhang
- Department of Chemistry
- State Key Laboratory of Elemento-Organic Chemistry
- Nankai University
- Collaborative Innovation Center of Chemical Science and Engineering
- Tianjin 300071
| | - Yu Liu
- Department of Chemistry
- State Key Laboratory of Elemento-Organic Chemistry
- Nankai University
- Collaborative Innovation Center of Chemical Science and Engineering
- Tianjin 300071
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95
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Sinha S, Mandal S, Gupta P. Cyclometalated iridium(iii) complexes of (aryl)ethenyl functionalized 2,2′-bipyridine: synthesis, photophysical properties and trans–cis isomerization behavior. RSC Adv 2015. [DOI: 10.1039/c5ra16214a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
The syntheses and photoinduced trans–cis isomerization behavior of 4,4′-(aryl)ethenyl functionalized 2,2′-bipyridyls and their cyclometalated iridium(iii) complexes have been investigated by NMR and electronic spectroscopy, X-ray crystallography and combined DFT-TDDFT studies.
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Affiliation(s)
- Soumalya Sinha
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER) Kolkata
- Mohanpur
- India
| | - Soumik Mandal
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER) Kolkata
- Mohanpur
- India
| | - Parna Gupta
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER) Kolkata
- Mohanpur
- India
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96
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Braumüller M, Schulz M, Sorsche D, Pfeffer M, Schaub M, Popp J, Park BW, Hagfeldt A, Dietzek B, Rau S. Synthesis and characterization of an immobilizable photochemical molecular device for H2-generation. Dalton Trans 2015; 44:5577-86. [DOI: 10.1039/c4dt03730h] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The immobilizable photocatalyst (4) was synthesized and successfully applied in visible-light-driven hydrogen-generation experiments, supporting its applicability in photoelectrosynthesis cells.
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Affiliation(s)
| | - Martin Schulz
- Institute of Photonic Technology (IPHT) Jena e. V
- D-07745 Jena
- Germany
- Institute for Physical Chemistry and Abbe Centre of Photonics
- Friedrich-Schiller University Jena
| | | | | | - Markus Schaub
- Universität Ulm
- Anorganische Chemie I
- D-89081 Ulm
- Germany
| | - Jürgen Popp
- Institute for Physical Chemistry and Abbe Centre of Photonics
- Friedrich-Schiller University Jena
- D-07743 Jena
- Germany
| | - Byung-Wook Park
- Department of Chemistry-Ångström
- Uppsala University
- SE-751 20 Uppsala
- Sweden
| | - Anders Hagfeldt
- Laboratory for Photomolecular Science (LSPM)
- Swiss Federal Institute of Technology at Lausanne (EPFL)
- CH-1015 Lausanne
- Switzerland
| | - Benjamin Dietzek
- Institute of Photonic Technology (IPHT) Jena e. V
- D-07745 Jena
- Germany
- Institute for Physical Chemistry and Abbe Centre of Photonics
- Friedrich-Schiller University Jena
| | - Sven Rau
- Universität Ulm
- Anorganische Chemie I
- D-89081 Ulm
- Germany
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97
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Paul A, Das N, Halpin Y, Vos JG, Pryce MT. Carboxy derivatised Ir(iii) complexes: synthesis, electrochemistry, photophysical properties and photocatalytic hydrogen generation. Dalton Trans 2015; 44:10423-30. [DOI: 10.1039/c5dt00324e] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this contribution the synthesis and characterisation of a series of novel mixed ligand iridium(iii) complexes, functionalised with a carboxy ester or phosphonate groups are reported.
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Affiliation(s)
- Avishek Paul
- School of Chemical Sciences
- Dublin City University
- Dublin 9
- Ireland
| | - Nivedita Das
- School of Chemical Sciences
- Dublin City University
- Dublin 9
- Ireland
| | - Yvonne Halpin
- School of Chemical Sciences
- Dublin City University
- Dublin 9
- Ireland
| | - Johannes G. Vos
- School of Chemical Sciences
- Dublin City University
- Dublin 9
- Ireland
| | - Mary T. Pryce
- School of Chemical Sciences
- Dublin City University
- Dublin 9
- Ireland
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98
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Ramdass A, Sathish V, Velayudham M, Thanasekaran P, Umapathy S, Rajagopal S. Synthesis and characterization of monometallic rhenium(i) complexes and their application as selective sensors for copper(ii) ions. RSC Adv 2015. [DOI: 10.1039/c5ra03157e] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Monometallic Re(i) complexes, selective and sensitive sensor of Cu(ii) ion, show substantial enhancement in the emission intensity, quantum yield, and lifetime due to the restriction of CN isomerization.
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Affiliation(s)
- Arumugam Ramdass
- School of Chemistry
- Madurai Kamaraj University
- Madurai-625 021
- India
| | | | - Murugesan Velayudham
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore-560 012
- India
| | | | - Siva Umapathy
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore-560 012
- India
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99
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Materna KL, Brennan BJ, Brudvig GW. Silatranes for binding inorganic complexes to metal oxide surfaces. Dalton Trans 2015; 44:20312-5. [DOI: 10.1039/c5dt03463a] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Silatranes do not react when synthesizing inorganic complexes and form bonds to metal oxide surfaces that are stable under acidic, neutral, and basic conditions.
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Affiliation(s)
- Kelly L. Materna
- Energy Sciences Institute and Department of Chemistry
- Yale University
- New Haven
- USA
| | - Bradley J. Brennan
- Energy Sciences Institute and Department of Chemistry
- Yale University
- New Haven
- USA
| | - Gary W. Brudvig
- Energy Sciences Institute and Department of Chemistry
- Yale University
- New Haven
- USA
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Ashford DL, Brennaman MK, Brown RJ, Keinan S, Concepcion JJ, Papanikolas JM, Templeton JL, Meyer TJ. Varying the Electronic Structure of Surface-Bound Ruthenium(II) Polypyridyl Complexes. Inorg Chem 2014; 54:460-9. [DOI: 10.1021/ic501682k] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Dennis L. Ashford
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel Hill, North Carolina 27599, United States
| | - M. Kyle Brennaman
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel Hill, North Carolina 27599, United States
| | - Robert J. Brown
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel Hill, North Carolina 27599, United States
| | - Shahar Keinan
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel Hill, North Carolina 27599, United States
| | - Javier J. Concepcion
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel Hill, North Carolina 27599, United States
| | - John M. Papanikolas
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel Hill, North Carolina 27599, United States
| | - Joseph L. Templeton
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel Hill, North Carolina 27599, United States
| | - Thomas J. Meyer
- Department
of Chemistry, University of North Carolina at Chapel Hill, CB 3290, Chapel Hill, North Carolina 27599, United States
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