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Singh N, Hee Noh G, Mubarok H, Woo Kim C, Hyung Lee M, Lee J. Synthesis and Photophysical Studies on Cyclometalated Iridium Complexes Containing Various Monodentate Phenyl-azole Ancillary Ligands. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.116096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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2
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Insight into luminescent iridium complexes: Their potential in Light-Emitting Electrochemical Cells. JOURNAL OF SAUDI CHEMICAL SOCIETY 2022. [DOI: 10.1016/j.jscs.2022.101442] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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3
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Bezzubov S, Ermolov K, Gorbunov A, Kalle P, Lentin I, Latyshev G, Kovalev V, Vatsouro I. Inherently dinuclear iridium(III) meso architectures accessed by cyclometalation of calix[4]arene-based bis(aryltriazoles). Dalton Trans 2021; 50:16765-16769. [PMID: 34761791 DOI: 10.1039/d1dt03579g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Conventional cyclometalation of calix[4]arene bis(aryltriazoles) with iridium(III) chloride hydrate leads to unique meso architectures in which the Ir2Cl2 core is cross-bound by two (C^N)2 ligands, which allows further replacement of the chloride bridges with ancillary ligands while maintaining the dinuclear structures of the complexes having independent or coupled iridium pairs.
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Affiliation(s)
- Stanislav Bezzubov
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, 119991 Moscow, Russia.
| | - Kirill Ermolov
- Department of Chemistry M. V. Lomonosov Moscow State University, Lenin's Hills 1, 119991 Moscow, Russia.
| | - Alexander Gorbunov
- Department of Chemistry M. V. Lomonosov Moscow State University, Lenin's Hills 1, 119991 Moscow, Russia.
| | - Paulina Kalle
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, 119991 Moscow, Russia.
| | - Ivan Lentin
- Department of Chemistry M. V. Lomonosov Moscow State University, Lenin's Hills 1, 119991 Moscow, Russia.
| | - Gennadij Latyshev
- Department of Chemistry M. V. Lomonosov Moscow State University, Lenin's Hills 1, 119991 Moscow, Russia.
| | - Vladimir Kovalev
- Department of Chemistry M. V. Lomonosov Moscow State University, Lenin's Hills 1, 119991 Moscow, Russia.
| | - Ivan Vatsouro
- Department of Chemistry M. V. Lomonosov Moscow State University, Lenin's Hills 1, 119991 Moscow, Russia.
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4
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Rational design and synthesis of AIE active cationic Ir(III) complexes featuring iminopyridine ligand with dibenzosuberane core. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.121770] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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5
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Baschieri A, Sambri L, Mazzanti A, Carlone A, Monti F, Armaroli N. Iridium(III) Complexes with Fluorinated Phenyl-tetrazoles as Cyclometalating Ligands: Enhanced Excited-State Energy and Blue Emission. Inorg Chem 2020; 59:16238-16250. [DOI: 10.1021/acs.inorgchem.0c01995] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andrea Baschieri
- Dipartimento di Scienze Fisiche e Chimiche, Università degli Studi dell’Aquila, Via Vetoio, L’Aquila 67100, Italy
| | - Letizia Sambri
- Dipartimento di Chimica Industriale “Toso Montanari”, Università di Bologna, Viale Risorgimento 4, Bologna 40136, Italy
| | - Andrea Mazzanti
- Dipartimento di Chimica Industriale “Toso Montanari”, Università di Bologna, Viale Risorgimento 4, Bologna 40136, Italy
| | - Armando Carlone
- Dipartimento di Scienze Fisiche e Chimiche, Università degli Studi dell’Aquila, Via Vetoio, L’Aquila 67100, Italy
| | - Filippo Monti
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, Via P. Gobetti 101, Bologna 40129, Italy
| | - Nicola Armaroli
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, Via P. Gobetti 101, Bologna 40129, Italy
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6
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Synthesis, crystal structure, photophysical properties, DFT studies and Hirshfeld surface analysis of a phosphorescent 1,2,4-triazole-based iridium(III) complex. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114690] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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7
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Abstract
A series of [Re(N^N)(CO)3(Cl)] (N^N = diimine) complexes based on 4-(pyrid-2-yl)-1,2,3-triazole (1), 1-benzyl-4-(pyrimidin-2-yl)-1,2,3-triazole (2), and 1-benzyl-4-(pyrazin-2-yl)-1,2,3-triazole (3) diimine ligands were prepared and their photophysical and electrochemical properties were characterized. The ligand-based reduction wave is shown to be highly sensitive to the nature of the triazole-based ligand, with the peak potential shifting by up to 600 mV toward more positive potential from 1 to 3. All three complexes are phosphorescent in solution at room temperature with λmax ranging from 540 nm (1) to 638 nm (3). Interestingly, the complexes appear to show inverted energy-gap law behaviour (τ = 43 ns for 1 versus 92 ns for 3), which is tentatively interpreted as reduced thermal accessibility of metal-centred (3MC) states from photoexcited metal to ligand charge transfer (3MLCT) states upon stabilisation of the N^N-centred lowest unoccupied molecular orbital (LUMO). The photophysical characterisation, supported by computational data, demonstrated a progressive stabilization of the LUMO from complex 1 to 3, which results in a narrowing of the HOMO–LUMO energy gap (HOMO = highest occupied molecular orbital) across the series and, correspondingly, red-shifted electronic absorption and photoluminescence spectra. The two complexes bearing pyridyl (1) and pyrimidyl (2) moieties, respectively, showed a modest ability to catalyse the electroreduction of CO2, with a peak potential at ca. −2.3 V versus Fc/Fc+. The catalytic wave that is observed in the cyclic voltammograms is slightly enhanced by the addition of water as a proton source.
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8
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Zhang H, Zhang Y, Xiang J. The Tunable Luminescence of Ruthenium(II) Complexes Containing Different Tetrazolate Ligands. Z Anorg Allg Chem 2020. [DOI: 10.1002/zaac.201900286] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hong‐Rui Zhang
- College of Agronomy Henan Agricultural University 450002 Zhengzhou P. R. China
| | - Yun‐Xia Zhang
- College of Life Science Zhengzhou Normal University 450044 Zhengzhou P. R. China
| | - Jing Xiang
- College of Chemistry and Environmental Engineering Yangtze University 434020 Jingzhou HuBei P. R. China
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9
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Wang X, Wang S, Pan F, He L, Duan L. Cationic Iridium Complexes with 5-Phenyl-1H-1,2,4-triazole Type Cyclometalating Ligands: Toward Blue-Shifted Emission. Inorg Chem 2019; 58:12132-12145. [DOI: 10.1021/acs.inorgchem.9b01433] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Xiaoxiang Wang
- College of Chemistry, Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, International Joint Research Center for Intelligent Biosensing Technology and Health, Central China Normal University, Wuhan 430079, People’s Republic of China
| | - Shirun Wang
- College of Chemistry, Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, International Joint Research Center for Intelligent Biosensing Technology and Health, Central China Normal University, Wuhan 430079, People’s Republic of China
| | - Fangfang Pan
- College of Chemistry, Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, International Joint Research Center for Intelligent Biosensing Technology and Health, Central China Normal University, Wuhan 430079, People’s Republic of China
| | - Lei He
- College of Chemistry, Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, Hubei International Scientific and Technological Cooperation Base of Pesticide and Green Synthesis, International Joint Research Center for Intelligent Biosensing Technology and Health, Central China Normal University, Wuhan 430079, People’s Republic of China
| | - Lian Duan
- Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
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10
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Henwood AF, Antón-García D, Morin M, Rota Martir D, Cordes DB, Casey C, Slawin AMZ, Lebl T, Bühl M, Zysman-Colman E. Conjugated, rigidified bibenzimidazole ancillary ligands for enhanced photoluminescence quantum yields of orange/red-emitting iridium(iii) complexes. Dalton Trans 2019; 48:9639-9653. [DOI: 10.1039/c9dt00423h] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A family of six orange/red-emitting cationic iridium complexes were synthesized and their optoelectronic properties comprehensively characterized.
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11
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Matteucci E, Monti F, Mazzoni R, Baschieri A, Bizzarri C, Sambri L. Click-Derived Triazolylidenes as Chelating Ligands: Achievement of a Neutral and Luminescent Iridium(III)–Triazolide Complex. Inorg Chem 2018; 57:11673-11686. [DOI: 10.1021/acs.inorgchem.8b01806] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Elia Matteucci
- Dipartimento di Chimica Industriale “Toso Montanari”, Università di Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
| | - Filippo Monti
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, Via P. Gobetti 101, 40129 Bologna, Italy
| | - Rita Mazzoni
- Dipartimento di Chimica Industriale “Toso Montanari”, Università di Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
| | - Andrea Baschieri
- Dipartimento di Chimica Industriale “Toso Montanari”, Università di Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
| | - Claudia Bizzarri
- Institute of Organic Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
| | - Letizia Sambri
- Dipartimento di Chimica Industriale “Toso Montanari”, Università di Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
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12
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13
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Ampawa S, Kethong C, Kiriratnikom J, Phomphrai K, Sangtrirutnugul P. Functionalized Bis(triazolyl)phenylmethanol-palladium(II) Catalysts for Cross Coupling Reactions in Water. ChemistrySelect 2018. [DOI: 10.1002/slct.201800822] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Supanan Ampawa
- Center of Excellence for Innovation in Chemistry (PERCH-CIC); Center for Catalysis; Department of Chemistry; Faculty of Science; Mahidol University; 272 Rama VI Rd. Bangkok 10400 Thailand
| | - Chanin Kethong
- Center of Excellence for Innovation in Chemistry (PERCH-CIC); Center for Catalysis; Department of Chemistry; Faculty of Science; Mahidol University; 272 Rama VI Rd. Bangkok 10400 Thailand
| | - Jiraya Kiriratnikom
- Department of Materials Science and Engineering; School of Molecular Science and Engineering; Vidyasirimedhi Institute of Science and Technology; Rayong 21210 Thailand
| | - Khamphee Phomphrai
- Department of Materials Science and Engineering; School of Molecular Science and Engineering; Vidyasirimedhi Institute of Science and Technology; Rayong 21210 Thailand
| | - Preeyanuch Sangtrirutnugul
- Center of Excellence for Innovation in Chemistry (PERCH-CIC); Center for Catalysis; Department of Chemistry; Faculty of Science; Mahidol University; 272 Rama VI Rd. Bangkok 10400 Thailand
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14
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Hierlinger C, Pal AK, Stella F, Lebl T, Cordes DB, Slawin AMZ, Jacquemin D, Guerchais V, Zysman-Colman E. Synthesis, Characterization, and Optoelectronic Properties of Iridium Complexes Bearing Nonconjugated Six-Membered Chelating Ligands. Inorg Chem 2018; 57:2023-2034. [DOI: 10.1021/acs.inorgchem.7b02940] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Claus Hierlinger
- Institut des Sciences
Chimiques de Rennes, UMR 6226 CNRS, Université de Rennes 1, Campus de Beaulieu, 35042 Rennes Cedex, France
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews, St Andrews, Fife KY16 9ST, U.K
| | - Amlan K. Pal
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews, St Andrews, Fife KY16 9ST, U.K
| | - Filippo Stella
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews, St Andrews, Fife KY16 9ST, U.K
| | - Tomas Lebl
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews, St Andrews, Fife KY16 9ST, U.K
| | - David B. Cordes
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews, St Andrews, Fife KY16 9ST, U.K
| | - Alexandra M. Z. Slawin
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews, St Andrews, Fife KY16 9ST, U.K
| | - Denis Jacquemin
- UMR CNRS 6230, Université de Nantes, CEISAM, 2 rue de la Houssinière, 44322 Nantes Cedex 3, France
- Institut Universitaire de France, 1, Rue Descartes, 75005 Paris Cedex 5, France
| | - Véronique Guerchais
- Institut des Sciences
Chimiques de Rennes, UMR 6226 CNRS, Université de Rennes 1, Campus de Beaulieu, 35042 Rennes Cedex, France
| | - Eli Zysman-Colman
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews, St Andrews, Fife KY16 9ST, U.K
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15
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Over the LEC rainbow: Colour and stability tuning of cyclometallated iridium(III) complexes in light-emitting electrochemical cells. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.06.016] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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16
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Scattergood PA, Sinopoli A, Elliott PI. Photophysics and photochemistry of 1,2,3-triazole-based complexes. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.06.017] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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17
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Ross DAW, Scattergood PA, Babaei A, Pertegás A, Bolink HJ, Elliott PIP. Luminescent osmium(ii) bi-1,2,3-triazol-4-yl complexes: photophysical characterisation and application in light-emitting electrochemical cells. Dalton Trans 2017; 45:7748-57. [PMID: 27055067 DOI: 10.1039/c6dt00830e] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The series of osmium(ii) complexes [Os(bpy)3-n(btz)n][PF6]2 (bpy = 2,2'-bipyridyl, btz = 1,1'-dibenzyl-4,4'-bi-1,2,3-triazolyl, n = 0, n = 1, n = 2, n = 3), have been prepared and characterised. The progressive replacement of bpy by btz leads to blue-shifted UV-visible electronic absorption spectra, indicative of btz perturbation of the successively destabilised bpy-centred LUMO. For , a dramatic blue-shift relative to the absorption profile for is observed, indicative of the much higher energy LUMO of the btz ligand over that of bpy, mirroring previously reported data on analogous ruthenium(ii) complexes. Unlike the previously reported ruthenium systems, heteroleptic complexes and display intense emission in the far-red/near-infrared (λmax = 724 and 713 nm respectively in aerated acetonitrile at RT) as a consequence of higher lying, and hence less thermally accessible, (3)MC states. This assertion is supported by ground state DFT calculations which show that the dσ* orbitals of to are destabilised by between 0.60 and 0.79 eV relative to their Ru(ii) analogues. The homoleptic complex appears to display extremely weak room temperature emission, but on cooling to 77 K the complex exhibits highly intense blue emission with λmax 444 nm. As complexes to display room temperature luminescent emission and readily reversible Os(ii)/(iii) redox couples, light-emitting electrochemical cell (LEC) devices were fabricated. All LECs display electroluminescent emission in the deep-red/near-IR (λmax = 695 to 730 nm). Whilst devices based on and show inferior current density and luminance than LECs based on , the device utilising shows the highest external quantum efficiency at 0.3%.
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Affiliation(s)
- Daniel A W Ross
- Department of Chemistry, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK.
| | - Paul A Scattergood
- Department of Chemistry, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK.
| | - Azin Babaei
- Instituto de Ciencia Molecular (ICMol), Universidad de Valencia, C/ Catedrático José Beltrán, 2, 46980 Paterna, Spain.
| | - Antonio Pertegás
- Instituto de Ciencia Molecular (ICMol), Universidad de Valencia, C/ Catedrático José Beltrán, 2, 46980 Paterna, Spain.
| | - Henk J Bolink
- Instituto de Ciencia Molecular (ICMol), Universidad de Valencia, C/ Catedrático José Beltrán, 2, 46980 Paterna, Spain.
| | - Paul I P Elliott
- Department of Chemistry, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, UK.
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Schweinfurth D, Hettmanczyk L, Suntrup L, Sarkar B. Metal Complexes of Click-Derived Triazoles and Mesoionic Carbenes: Electron Transfer, Photochemistry, Magnetic Bistability, and Catalysis. Z Anorg Allg Chem 2017. [DOI: 10.1002/zaac.201700030] [Citation(s) in RCA: 131] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- David Schweinfurth
- Institut für Chemie und Biochemie, Anorganische Chemie; Freie Universität Berlin; Fabeckstraße 34-36 14195 Berlin Germany
| | - Lara Hettmanczyk
- Institut für Chemie und Biochemie, Anorganische Chemie; Freie Universität Berlin; Fabeckstraße 34-36 14195 Berlin Germany
| | - Lisa Suntrup
- Institut für Chemie und Biochemie, Anorganische Chemie; Freie Universität Berlin; Fabeckstraße 34-36 14195 Berlin Germany
| | - Biprajit Sarkar
- Institut für Chemie und Biochemie, Anorganische Chemie; Freie Universität Berlin; Fabeckstraße 34-36 14195 Berlin Germany
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19
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Scattergood PA, Elliott PIP. An unexpected journey from highly tunable phosphorescence to novel photochemistry of 1,2,3-triazole-based complexes. Dalton Trans 2017; 46:16343-16356. [DOI: 10.1039/c7dt03836d] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Complexes containing the humble 1,2,3-triazole ring moiety have enabled access to highly tunable with efficient phosphorescence but have also in facilitated access to novel photoreactive excited states yielding highly unusual photochemical reactivity.
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20
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Henwood AF, Zysman-Colman E. Lessons learned in tuning the optoelectronic properties of phosphorescent iridium(iii) complexes. Chem Commun (Camb) 2017; 53:807-826. [DOI: 10.1039/c6cc06729h] [Citation(s) in RCA: 145] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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21
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Dixon IM, Heully JL, Alary F, Elliott PIP. Theoretical illumination of highly original photoreactive3MC states and the mechanism of the photochemistry of Ru(ii) tris(bidentate) complexes. Phys Chem Chem Phys 2017; 19:27765-27778. [DOI: 10.1039/c7cp05532c] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Elucidation of the photoreactive mechanism of ruthenium(ii) complexes is reported along with identification of crucial and highly original metal-centred states.
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Affiliation(s)
- Isabelle M. Dixon
- Laboratoire de Chimie et Physique Quantiques
- UMR 5626 CNRS/Université Toulouse 3 – Paul Sabatier
- Université de Toulouse
- Toulouse
- France
| | - Jean-Louis Heully
- Laboratoire de Chimie et Physique Quantiques
- UMR 5626 CNRS/Université Toulouse 3 – Paul Sabatier
- Université de Toulouse
- Toulouse
- France
| | - Fabienne Alary
- Laboratoire de Chimie et Physique Quantiques
- UMR 5626 CNRS/Université Toulouse 3 – Paul Sabatier
- Université de Toulouse
- Toulouse
- France
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22
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Scattergood PA, Ross DAW, Rice CR, Elliott PIP. Labilizing the Photoinert: Extraordinarily Facile Photochemical Ligand Ejection in an [Os(N^N) 3
] 2+
Complex. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201604959] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | - Daniel A. W. Ross
- Department of Chemistry; University of Huddersfield; Huddersfield UK
| | - Craig R. Rice
- Department of Chemistry; University of Huddersfield; Huddersfield UK
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23
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Scattergood PA, Ross DAW, Rice CR, Elliott PIP. Labilizing the Photoinert: Extraordinarily Facile Photochemical Ligand Ejection in an [Os(N^N)3 ](2+) Complex. Angew Chem Int Ed Engl 2016; 55:10697-701. [PMID: 27485699 DOI: 10.1002/anie.201604959] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Indexed: 01/09/2023]
Abstract
Whilst [Os(N^N)3 ](2+) complexes are supposed to be photochemically inert to ligand loss, the complex [Os(btz)3 ](2+) (btz=1,1'-dibenzyl-4,4'-bi-1,2,3-triazolyl) undergoes unprecedented photolytic reactivity to liberate free btz (Φ363 ≈1.2 %). Further, both cis and trans isomers of the photodechelated ligand-loss solvento intermediate [Os(κ(2) -btz)2 (κ(1) -btz)(NCMe)](2+) are unambiguously observed and characterized by NMR spectroscopy and mass spectrometry.
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Affiliation(s)
| | - Daniel A W Ross
- Department of Chemistry, University of Huddersfield, Huddersfield, UK
| | - Craig R Rice
- Department of Chemistry, University of Huddersfield, Huddersfield, UK
| | - Paul I P Elliott
- Department of Chemistry, University of Huddersfield, Huddersfield, UK.
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24
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Baschieri A, Monti F, Matteucci E, Mazzanti A, Barbieri A, Armaroli N, Sambri L. A Mesoionic Carbene as Neutral Ligand for Phosphorescent Cationic Ir(III) Complexes. Inorg Chem 2016; 55:7912-9. [PMID: 27483041 DOI: 10.1021/acs.inorgchem.6b00869] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Two phosphorescent Ir(III) complexes bearing a mesoionic carbene ligand based on 1,2,3-triazolylidene are obtained for the first time. A silver-iridium transmetalation of the in situ-generated mesoionic carbene affords the cationic dichloro complex [Ir(trizpy)2Cl2](+) (3, trizpy = 1-benzyl-3-methyl-4-(pyridin-2-yl)-1H-1,2,3-triazolylidene) that reacts with a bis-tetrazolate (b-trz) dianionic ligand to give [Ir(trizpy)2(b-trz)](+) (5). The new compounds are fully characterized by NMR spectroscopy and mass spectrometry, and the X-ray structure of 3 is determined. The electrochemical behavior is somewhat different compared to most standard cationic iridium complexes. The first oxidation process is shifted to substantially higher potential in both 3 and 5, due to peculiar and different ligand-induced effects in the two cases, which stabilize the highest occupied molecular orbital; reduction processes are centered on the mesoionic carbene ligands. Both compounds exhibit a mostly ligand-centered luminescence band in the blue-green spectral region, substantially stronger in the case of 5 versus 3, both in CH3CN solution and in poly(methyl methacrylate) matrix at room temperature. Optimized geometries, orbital energies, spin densities, and electronic transitions are determined via density functional theory calculations, which support a full rationalization of the electrochemical and photophysical behavior. This work paves the way for the development of Ir-based emitters with neutral mesoionic carbene ligands and anionic ancillary ligands, a new concept in the area of cationic Ir(III) complexes.
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Affiliation(s)
- Andrea Baschieri
- Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna , Viale Risorgimento 4, I-40136 Bologna, Italy
| | - Filippo Monti
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche , Via P. Gobetti 101, I-40129 Bologna, Italy
| | - Elia Matteucci
- Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna , Viale Risorgimento 4, I-40136 Bologna, Italy
| | - Andrea Mazzanti
- Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna , Viale Risorgimento 4, I-40136 Bologna, Italy
| | - Andrea Barbieri
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche , Via P. Gobetti 101, I-40129 Bologna, Italy
| | - Nicola Armaroli
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche , Via P. Gobetti 101, I-40129 Bologna, Italy
| | - Letizia Sambri
- Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna , Viale Risorgimento 4, I-40136 Bologna, Italy
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25
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Porras JA, Mills IN, Transue WJ, Bernhard S. Highly Fluorinated Ir(III)-2,2':6',2″-Terpyridine-Phenylpyridine-X Complexes via Selective C-F Activation: Robust Photocatalysts for Solar Fuel Generation and Photoredox Catalysis. J Am Chem Soc 2016; 138:9460-72. [PMID: 27387149 DOI: 10.1021/jacs.6b03246] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A series of fluorinated Ir(III)-terpyridine-phenylpyridine-X (X = anionic monodentate ligand) complexes were synthesized by selective C-F activation, whereby perfluorinated phenylpyridines were readily complexed. The combination of fluorinated phenylpyridine ligands with an electron-rich tri-tert-butyl terpyridine ligand generates a "push-pull" force on the electrons upon excitation, imparting significant enhancements to the stability, electrochemical, and photophysical properties of the complexes. Application of the complexes as photosensitizers for photocatalytic generation of hydrogen from water and as redox photocatalysts for decarboxylative fluorination of several carboxylic acids showcases the performance of the complexes in highly coordinating solvents, in some cases exceeding that of the leading photosensitizers. Changes in the photophysical properties and the nature of the excited states are observed as the compounds increase in fluorination as well as upon exchange of the ancillary chloride ligand to a cyanide. These changes in the excited states have been corroborated using density functional theory modeling.
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Affiliation(s)
- Jonathan A Porras
- Department of Chemistry, Carnegie Mellon University , Pittsburgh, Pennsylvania 15213, United States
| | - Isaac N Mills
- Department of Chemistry, Carnegie Mellon University , Pittsburgh, Pennsylvania 15213, United States
| | - Wesley J Transue
- Department of Chemistry, Carnegie Mellon University , Pittsburgh, Pennsylvania 15213, United States
| | - Stefan Bernhard
- Department of Chemistry, Carnegie Mellon University , Pittsburgh, Pennsylvania 15213, United States
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26
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Scattergood PA, Khushnood U, Tariq A, Cooke DJ, Rice CR, Elliott PIP. Photochemistry of [Ru(pytz)(btz)2]2+ and Characterization of a κ1-btz Ligand-Loss Intermediate. Inorg Chem 2016; 55:7787-96. [DOI: 10.1021/acs.inorgchem.6b00782] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Paul A. Scattergood
- Department of Chemistry, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, United Kingdom
| | - Usman Khushnood
- Department of Chemistry, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, United Kingdom
| | - Amina Tariq
- Department of Chemistry, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, United Kingdom
| | - David J. Cooke
- Department of Chemistry, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, United Kingdom
| | - Craig R. Rice
- Department of Chemistry, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, United Kingdom
| | - Paul I. P. Elliott
- Department of Chemistry, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, United Kingdom
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27
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Rota Martir D, Bansal AK, Di Mascio V, Cordes DB, Henwood AF, Slawin AMZ, Kamer PCJ, Martínez-Sarti L, Pertegás A, Bolink HJ, Samuel IDW, Zysman-Colman E. Enhancing the photoluminescence quantum yields of blue-emitting cationic iridium(iii) complexes bearing bisphosphine ligands. Inorg Chem Front 2016. [DOI: 10.1039/c5qi00177c] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We demonstrate a turn-on strategy for blue-emitting [Ir(C^N)2(P^P)]PF6 complexes and apply them to EL devices.
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28
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Connell TU, James JL, White AR, Donnelly PS. Protein Labelling with Versatile Phosphorescent Metal Complexes for Live Cell Luminescence Imaging. Chemistry 2015; 21:14146-55. [PMID: 26264214 DOI: 10.1002/chem.201501630] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Indexed: 01/01/2023]
Abstract
To take advantage of the luminescent properties of d(6) transition metal complexes to label proteins, versatile bifunctional ligands were prepared. Ligands that contain a 1,2,3-triazole heterocycle were synthesised using Cu(I) catalysed azide-alkyne cycloaddition "click" chemistry and were used to form phosphorescent Ir(III) and Ru(II) complexes. Their emission properties were readily tuned, by changing either the metal ion or the co-ligands. The complexes were tethered to the metalloprotein transferrin using several conjugation strategies. The Ir(III)/Ru(II)-protein conjugates could be visualised in cancer cells using live cell imaging for extended periods without significant photobleaching. These versatile phosphorescent protein-labelling agents could be widely applied to other proteins and biomolecules and are useful alternatives to conventional organic fluorophores for several applications.
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Affiliation(s)
- Timothy U Connell
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Melbourne, Victoria 3010 (Australia)
| | - Janine L James
- Department of Pathology, The University of Melbourne, Melbourne, Victoria 3010 (Australia)
| | - Anthony R White
- Department of Pathology, The University of Melbourne, Melbourne, Victoria 3010 (Australia)
| | - Paul S Donnelly
- School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, The University of Melbourne, Melbourne, Victoria 3010 (Australia).
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29
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Pla P, Junquera-Hernández JM, Bolink HJ, Ortí E. Emission energy of azole-based ionic iridium(iii) complexes: a theoretical study. Dalton Trans 2015; 44:8497-505. [DOI: 10.1039/c4dt03046j] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Tuning the emission color of azole-based iridium(iii) complexes by changing the number and position of nitrogen atoms in the azole ring.
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Affiliation(s)
- Paula Pla
- Instituto de Ciencia Molecular
- Universidad de Valencia
- 46980 Paterna
- Spain
| | | | - Henk J. Bolink
- Instituto de Ciencia Molecular
- Universidad de Valencia
- 46980 Paterna
- Spain
| | - Enrique Ortí
- Instituto de Ciencia Molecular
- Universidad de Valencia
- 46980 Paterna
- Spain
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30
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Hasan K, Pal AK, Auvray T, Zysman-Colman E, Hanan GS. Blue-green emissive cationic iridium(iii) complexes using partially saturated strongly-donating guanidyl-pyridine/-pyrazine ancillary ligands. Chem Commun (Camb) 2015; 51:14060-3. [DOI: 10.1039/c5cc04069h] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A new class of cationic iridium(iii) complexes of the form [(C∧N)2Ir(N∧N)][PF6] is reported, where C∧N = cyclometallating 2-phenylpyridinato, ppy, or 2-(2,4-difluorophenyl)-5′-methylpyridinato, dFMeppy, and N∧N = guanidyl-pyridine, gpy, or -pyrazine, gpz, as the ancillary ligand.
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Affiliation(s)
- Kamrul Hasan
- Département de Chimie
- Université de Montréal
- Montréal
- Canada
| | - Amlan K. Pal
- Département de Chimie
- Université de Montréal
- Montréal
- Canada
| | - Thomas Auvray
- Département de Chimie
- Université de Montréal
- Montréal
- Canada
| | - Eli Zysman-Colman
- Organic Semiconductor Centre
- EaStCHEM School of Chemistry
- University of St Andrews
- St Andrews
- UK
| | - Garry S. Hanan
- Département de Chimie
- Université de Montréal
- Montréal
- Canada
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31
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Noor A, Maloney DL, Lewis JEM, Lo WKC, Crowley JD. Acid-Base Driven Ligand Exchange with Palladium(II) “Click” Complexes. ASIAN J ORG CHEM 2014. [DOI: 10.1002/ajoc.201402197] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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32
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Rawson JM, Donato L, Zysman-Colman E. Triazole-directed hydrogen-bonded structures of cationic iridium(iii) complexes. CrystEngComm 2014. [DOI: 10.1039/c4ce00980k] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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33
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Monti F, Baschieri A, Gualandi I, Serrano-Pérez JJ, Junquera-Hernández JM, Tonelli D, Mazzanti A, Muzzioli S, Stagni S, Roldan-Carmona C, Pertegás A, Bolink HJ, Ortí E, Sambri L, Armaroli N. Iridium(III) Complexes with Phenyl-tetrazoles as Cyclometalating Ligands. Inorg Chem 2014; 53:7709-21. [DOI: 10.1021/ic500999k] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Filippo Monti
- Istituto
per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale
delle Ricerche, Via P.
Gobetti, 101, I-40129, Bologna, Italy
| | - Andrea Baschieri
- Dipartimento
di Chimica Industriale “Toso Montanari”, Università di Bologna, Viale Risorgimento 4, I-40136, Bologna, Italy
| | - Isacco Gualandi
- Dipartimento
di Chimica Industriale “Toso Montanari”, Università di Bologna, Viale Risorgimento 4, I-40136, Bologna, Italy
| | - Juan J. Serrano-Pérez
- Instituto
de Ciencia Molecular, Universidad de Valencia, Catedrático José Beltrán
2, E-46980, Paterna, Spain
| | - José M. Junquera-Hernández
- Instituto
de Ciencia Molecular, Universidad de Valencia, Catedrático José Beltrán
2, E-46980, Paterna, Spain
| | - Domenica Tonelli
- Dipartimento
di Chimica Industriale “Toso Montanari”, Università di Bologna, Viale Risorgimento 4, I-40136, Bologna, Italy
| | - Andrea Mazzanti
- Dipartimento
di Chimica Industriale “Toso Montanari”, Università di Bologna, Viale Risorgimento 4, I-40136, Bologna, Italy
| | - Sara Muzzioli
- Dipartimento
di Chimica Industriale “Toso Montanari”, Università di Bologna, Viale Risorgimento 4, I-40136, Bologna, Italy
| | - Stefano Stagni
- Dipartimento
di Chimica Industriale “Toso Montanari”, Università di Bologna, Viale Risorgimento 4, I-40136, Bologna, Italy
| | - Cristina Roldan-Carmona
- Instituto
de Ciencia Molecular, Universidad de Valencia, Catedrático José Beltrán
2, E-46980, Paterna, Spain
| | - Antonio Pertegás
- Instituto
de Ciencia Molecular, Universidad de Valencia, Catedrático José Beltrán
2, E-46980, Paterna, Spain
| | - Henk J. Bolink
- Instituto
de Ciencia Molecular, Universidad de Valencia, Catedrático José Beltrán
2, E-46980, Paterna, Spain
| | - Enrique Ortí
- Instituto
de Ciencia Molecular, Universidad de Valencia, Catedrático José Beltrán
2, E-46980, Paterna, Spain
| | - Letizia Sambri
- Dipartimento
di Chimica Industriale “Toso Montanari”, Università di Bologna, Viale Risorgimento 4, I-40136, Bologna, Italy
| | - Nicola Armaroli
- Istituto
per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale
delle Ricerche, Via P.
Gobetti, 101, I-40129, Bologna, Italy
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34
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Six d10 metal complexes containing multidentate dicyanoisophorone-triazolyl derivative: Structures and luminescent properties. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.04.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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35
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Welby CE, Armitage GK, Bartley H, Wilkinson A, Sinopoli A, Uppal BS, Rice CR, Elliott PIP. Photochemistry of RuII 4,4'-bi-1,2,3-triazolyl (btz) complexes: crystallographic characterization of the photoreactive ligand-loss intermediate trans-[Ru(bpy)(κ2-btz)(κ1-btz)(NCMe)]2+. Chemistry 2014; 20:8467-76. [PMID: 24889966 PMCID: PMC4506527 DOI: 10.1002/chem.201402354] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Indexed: 12/03/2022]
Abstract
We report the unprecedented observation and unequivocal crystallographic characterization of the meta-stable ligand loss intermediate solvento complex trans-[Ru(bpy)(κ2-btz)(κ1-btz)(NCMe)]2+ (1 a) that contains a monodentate chelate ligand. This and analogous complexes can be observed during the photolysis reactions of a family of complexes of the form [Ru()(btz)2]2+ (1 a–d: btz=1,1′-dibenzyl-4,4′-bi-1,2,3-triazolyl; =a) 2,2′-bipyridyl (bpy), b) 4,4′-dimethyl-2,2′-bipyridyl (dmbpy), c) 4,4′-dimethoxy-2,2′-bipyridyl (dmeobpy), d) 1,10-phenanthroline (phen)). In acetonitrile solutions, 1 a–d eventually convert to the bis-solvento complexes trans-[Ru()(btz)(NCMe)2]2+ (3 a–d) along with one equivalent of free btz, in a process in which the remaining coordinated bidentate ligands undergo a new rearrangement such that they become coplanar. X-ray crystal structure of 3 a and 3 d confirmed the co-planar arrangement of the and btz ligands and the trans coordination of two solvent molecules. These conversions proceed via the observed intermediate complexes 2 a–d, which are formed quantitatively from 1 a–d in a matter of minutes and to which they slowly revert back on being left to stand in the dark over several days. The remarkably long lifetime of the intermediate complexes (>12 h at 40 °C) allowed the isolation of 2 a in the solid state, and the complex to be crystallographically characterized. Similarly to the structures adopted by complexes 3 a and d, the bpy and κ2-btz ligands in 2 a coordinate in a square-planar fashion with the second monodentate btz ligand coordinated trans to an acetonitrile ligand.
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Affiliation(s)
- Christine E Welby
- Department of Chemistry, University of Huddersfield, Queensgate, Huddersfield, HD1 3DH (UK)
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36
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Hohloch S, Hettmanczyk L, Sarkar B. Introducing Potential Hemilability into “Click” Triazoles and Triazolylidenes: Synthesis and Characterization of d6-Metal Complexes and Oxidation Catalysis. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402178] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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37
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Chirdon DN, Transue WJ, Kagalwala HN, Kaur A, Maurer AB, Pintauer T, Bernhard S. [Ir(N^N^N)(C^N)L]+: a new family of luminophores combining tunability and enhanced photostability. Inorg Chem 2014; 53:1487-99. [PMID: 24437359 DOI: 10.1021/ic402411g] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The relatively unexplored luminophore architecture [Ir(N^N^N)(C^N)L](+) (N^N^N = tridentate polypyridyl ligand, C^N = 2-phenylpyridine derivative, and L = monodentate anionic ligand) offers the stability of tridentate polypyridyl coordination along with the tunability of three independently variable ligands. Here, a new family of these luminophores has been prepared based on the previously reported compound [Ir(tpy)(ppy)Cl](+) (tpy = 2,2':6',2″-terpyridine and ppy = 2-phenylpyridine). Complexes are obtained as single stereoisomers, and ligand geometry is unambiguously assigned via X-ray crystallography. Electrochemical analysis of the materials reveals facile HOMO modulation through ppy functionalization and alteration of the monodentate ligand's field strength. Emission reflects similar modulation shifting from orange to greenish-blue upon replacement of chloride with cyanide. Many of the new compounds exhibit impressive room temperature phosphorescence with lifetimes near 3 μs and quantum yields reaching 28.6%. Application of the new luminophores as photosensitizers for photocatalytic hydrogen generation reveals that their photostability in coordinating solvent is enhanced as compared to popular [Ir(ppy)2(bpy)](+) (bpy = 2,2'-bipyridine) photosensitizers. Yet, the binding of their monodentate ligand emerges as a source of instability during the redox processes of cyclic voltammetry and mass spectrometry. DFT modeling of electronic structure is provided for all compounds to elucidate experimental properties.
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Affiliation(s)
- Danielle N Chirdon
- Department of Chemistry, Carnegie Mellon University , Pittsburgh, Pennsylvania 15213, United States
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38
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Hasan K, Donato L, Shen Y, D. Slinker J, Zysman-Colman E. Cationic iridium(iii) complexes bearing ancillary 2,5-dipyridyl(pyrazine) (2,5-dpp) and 2,2′:5′,2′′-terpyridine (2,5-tpy) ligands: synthesis, optoelectronic characterization and light-emitting electrochemical cells. Dalton Trans 2014; 43:13672-82. [DOI: 10.1039/c4dt02100b] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Four green to deep red emitting cationic iridium(iii) complexes are reported as emitters for LEECs.
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Affiliation(s)
- Kamrul Hasan
- Département de Chimie
- Université de Sherbrooke
- Sherbrooke, Canada
| | - Loïc Donato
- Département de Chimie
- Université de Sherbrooke
- Sherbrooke, Canada
| | - Yulong Shen
- Department of Physics
- The University of Texas at Dallas
- Richardson, USA
| | - Jason D. Slinker
- Department of Physics
- The University of Texas at Dallas
- Richardson, USA
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39
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Hohloch S, Schweinfurth D, Sommer MG, Weisser F, Deibel N, Ehret F, Sarkar B. The redox series [Ru(bpy)2(L)]n, n = +3, +2, +1, 0, with L = bipyridine, “click” derived pyridyl-triazole or bis-triazole: a combined structural, electrochemical, spectroelectrochemical and DFT investigation. Dalton Trans 2014; 43:4437-50. [DOI: 10.1039/c3dt52898g] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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40
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Henwood AF, Evariste S, Slawin AMZ, Zysman-Colman E. Rigid biimidazole ancillary ligands as an avenue to bright deep blue cationic iridium(iii) complexes. Faraday Discuss 2014; 174:165-82. [DOI: 10.1039/c4fd00107a] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein we report the synthesis and optoelectronic characterisation of three deep blue-emitting cationic iridium complexes, of the form [Ir(dFppy)2(N^N)]PF6, bearing biimidazole-type N^N ancillary ligands (dFppyH = 2-(2,4-difluorophenyl)pyridine). Complex 1 contains the parent biimidazole, biim, while 2 contains a dimethylated analog, dMebiim, and 3 contains an ortho-xylyl-tethered biimidzole, o-xylbiim. We explore a strategy of tethering the biimidazole in order to rigidify the complex and increase the photoluminescent quantum yield, culminating in deep blue (λmax: 457 nm in MeOH at 298 K) ligand-centered emission with a very high photoluminescent quantum yield of 68% and microsecond emission lifetime. Density functional theory calculations elucidate the origin of such disparate excited state kinetics across this series, especially in light of virtually identical optoelectronic properties observed for these compounds.
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Affiliation(s)
- Adam F. Henwood
- EaStCHEM School of Chemistry
- University of St Andrews
- St Andrews, UK
| | - Sloane Evariste
- Département de Chimie
- Université de Sherbrooke
- 2500 Boul. de l'Université
- Sherbrooke, Canada
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41
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Schulze B, Schubert US. Beyond click chemistry – supramolecular interactions of 1,2,3-triazoles. Chem Soc Rev 2014; 43:2522-71. [DOI: 10.1039/c3cs60386e] [Citation(s) in RCA: 583] [Impact Index Per Article: 58.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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42
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Welby CE, Armitage GK, Bartley H, Sinopoli A, Uppal BS, Elliott PIP. Photochemical ligand ejection from non-sterically promoted Ru(ii)bis(diimine) 4,4′-bi-1,2,3-triazolyl complexes. Photochem Photobiol Sci 2014; 13:735-8. [DOI: 10.1039/c3pp50437a] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Complexes of the form [Ru(diimine)2(btz)]2+ (btz = 1,1′-dibenzyl-4,4′-bi-1,2,3-triazolyl) are observed to undergo photochemical ejection of the btz ligand in the absence of any promotion through steric congestion.
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Affiliation(s)
| | | | - Harry Bartley
- Department of Chemistry
- University of Huddersfield
- Huddersfield, UK
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43
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Qu X, Liu Y, Si Y, Wu X, Wu Z. A theoretical study on supramolecularly-caged positively charged iridium(iii) 2-pyridyl azolate derivatives as blue emitters for light-emitting electrochemical cells. Dalton Trans 2014; 43:1246-60. [DOI: 10.1039/c3dt51888d] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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Ladouceur S, Swanick KN, Gallagher-Duval S, Ding Z, Zysman-Colman E. Strongly Blue Luminescent Cationic Iridium(III) Complexes with an Electron-Rich Ancillary Ligand: Evaluation of Their Optoelectronic and Electrochemiluminescence Properties. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300849] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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45
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Welby CE, Gilmartin L, Marriott RR, Zahid A, Rice CR, Gibson EA, Elliott PIP. Luminescent biscyclometalated arylpyridine iridium(iii) complexes with 4,4′-bi-1,2,3-triazolyl ancillary ligands. Dalton Trans 2013; 42:13527-36. [DOI: 10.1039/c3dt51284c] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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