1
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Poveda D, Vivancos Á, Bautista D, González-Herrero P. Luminescent Platinum(II) Complexes with Terdentate N∧C∧C Ligands. Inorg Chem 2023; 62:20987-21002. [PMID: 38051299 PMCID: PMC10751801 DOI: 10.1021/acs.inorgchem.3c02399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 11/17/2023] [Accepted: 11/22/2023] [Indexed: 12/07/2023]
Abstract
The synthesis, structure, and luminescence of Pt(II) complexes of the type [Pt(N∧C∧C)(L)] are reported, where N∧C∧C is a terdentate ligand resulting from the cycloplatination of 2-(3,5-diphenoxyphenyl)pyridine or 2-(4,4″-dimethyl-[1,1':3',1″-terphenyl]-5'-yl)pyridine, and L represents a monodentate ancillary ligand, which can be γ-picoline, 4-pyridinecarboxaldehyde, PPh3, n-butyl or 2,6-dimethylphenyl isocyanide, CO, or the N-heterocyclic carbenes 1-butyl-3-methylimidazol-2-ylidene or 4-butyl-3-methyl-1-phenyl-1H-1,2,3-triazol-5-ylidene. Derivatives bearing CO, isocyanides, or carbenes showed the highest stabilities in solution, whereas the pyridine and PPh3 derivatives establish ligand-exchange equilibria in acetonitrile. Different supramolecular structures are observed in the solid state, which largely depend on the nature of the ancillary ligand. Isocyanides and CO favor π interactions between the aromatic rings, metallophilic Pt···Pt contacts, or a combination of both. In contrast, pyridine ligands may lead to bimolecular assemblies driven by C-H···O, C-H···Pt, or C-H/π hydrogen bonds. Luminescence was examined in fluid solution, poly(methyl methacrylate) matrices, and the solid state at 298 K, and in 2-methyltetrahydrofuran glasses at 77 K. The majority of derivatives show highly efficient emissions from 3ILCT/MLCT or 3ILCT/MLCT/LLCT excited states of monomeric species. The formation of excimers and different types of emissive aggregates are demonstrated, which lead to red-shifted emissions of different origins and characteristics depending on the involved noncovalent interactions.
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Affiliation(s)
- Dionisio Poveda
- Departamento
de Química Inorgánica, Facultad de Química, Universidad de Murcia, Campus de Espinardo, 19, 30100 Murcia, Spain
| | - Ángela Vivancos
- Departamento
de Química Inorgánica, Facultad de Química, Universidad de Murcia, Campus de Espinardo, 19, 30100 Murcia, Spain
| | - Delia Bautista
- Área
Científica y Técnica de Investigación, Universidad de Murcia, Campus de Espinardo, 21, 30100 Murcia, Spain
| | - Pablo González-Herrero
- Departamento
de Química Inorgánica, Facultad de Química, Universidad de Murcia, Campus de Espinardo, 19, 30100 Murcia, Spain
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2
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Poveda D, Vivancos Á, Bautista D, González-Herrero P. Photochemically Induced Cyclometalations at Simple Platinum(II) Precursors. Inorg Chem 2023; 62:6207-6213. [PMID: 37043617 PMCID: PMC10131227 DOI: 10.1021/acs.inorgchem.3c00688] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
Photochemical cycloplatinations of 2-arylpyridines and related C∧N ligands, as well as terdentate heteroaromatic N∧N∧C, N∧C∧N, and N∧C∧C compounds, are demonstrated using (Bu4N)2[Pt2Cl6] or [PtCl2(NCPh)2] as precursors at room temperature. Mono- or bis-cyclometalated Pt(II) complexes with C∧N ligands are obtained depending on excitation wavelength and precursor. Monitoring experiments show that photoexcitation enables both the N-coordination and the subsequent C-H metalation. Photochemical synthetic protocols have been developed, which are advantageous with respect to the established thermal procedures and have allowed the synthesis of the first Pt(II) complexes with N∧C∧C ligands.
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Affiliation(s)
- Dionisio Poveda
- Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia, Campus de Espinardo, 19, 30100 Murcia, Spain
| | - Ángela Vivancos
- Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia, Campus de Espinardo, 19, 30100 Murcia, Spain
| | - Delia Bautista
- Área Científica y Técnica de Investigación, Universidad de Murcia, Campus de Espinardo, 21, 30100 Murcia, Spain
| | - Pablo González-Herrero
- Departamento de Química Inorgánica, Facultad de Química, Universidad de Murcia, Campus de Espinardo, 19, 30100 Murcia, Spain
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3
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Calupitan JP, Wang T, Pérez Paz A, Álvarez B, Berdonces-Layunta A, Angulo-Portugal P, Castrillo-Bodero R, Schiller F, Peña D, Corso M, Pérez D, de Oteyza DG. Room-Temperature C-C σ-Bond Activation of Biphenylene Derivatives on Cu(111). J Phys Chem Lett 2023; 14:947-953. [PMID: 36688740 PMCID: PMC9900639 DOI: 10.1021/acs.jpclett.2c03346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 01/17/2023] [Indexed: 06/17/2023]
Abstract
Activating the strong C-C σ-bond is a central problem in organic synthesis. Directly generating activated C centers by metalation of structures containing strained four-membered rings is one maneuver often employed in multistep syntheses. This usually requires high temperatures and/or precious transition metals. In this paper, we report an unprecedented C-C σ-bond activation at room temperature on Cu(111). By using bond-resolving scanning probe microscopy, we show the breaking of one of the C-C σ-bonds of a biphenylene derivative, followed by insertion of Cu from the substrate. Chemical characterization of the generated species was complemented by X-ray photoemission spectroscopy, and their reactivity was explained by density functional theory calculations. To gain further insight into this unique reactivity on other coinage metals, the reaction pathway on Ag(111) was also investigated and the results were compared with those on Cu(111). This study offers new synthetic routes that may be employed in the in situ generation of activated species for the on-surface synthesis of novel C-based nanostructures.
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Affiliation(s)
| | - Tao Wang
- Centro
de Fisica de Materiales CFM/MPC, CSIC-UPV/EHU, 20018 San Sebastián, Spain
- Donostia
International Physics Center, 20018 San Sebastián, Spain
| | - Alejandro Pérez Paz
- Department
of Chemistry and Biochemistry, College of Science (COS), United Arab Emirates University (UAEU), 15551 Al Ain, UAE
| | - Berta Álvarez
- Centro
Singular de Investigación en Química Biolóxica
e Materiais Moleculares (CiQUS) and Departamento de Química
Orgánica, Universidade de Santiago
de Compostela, 15782 Santiago de Compostela, Spain
| | - Alejandro Berdonces-Layunta
- Centro
de Fisica de Materiales CFM/MPC, CSIC-UPV/EHU, 20018 San Sebastián, Spain
- Donostia
International Physics Center, 20018 San Sebastián, Spain
| | | | | | - Frederik Schiller
- Centro
de Fisica de Materiales CFM/MPC, CSIC-UPV/EHU, 20018 San Sebastián, Spain
- Donostia
International Physics Center, 20018 San Sebastián, Spain
| | - Diego Peña
- Centro
Singular de Investigación en Química Biolóxica
e Materiais Moleculares (CiQUS) and Departamento de Química
Orgánica, Universidade de Santiago
de Compostela, 15782 Santiago de Compostela, Spain
| | - Martina Corso
- Centro
de Fisica de Materiales CFM/MPC, CSIC-UPV/EHU, 20018 San Sebastián, Spain
- Donostia
International Physics Center, 20018 San Sebastián, Spain
| | - Dolores Pérez
- Centro
Singular de Investigación en Química Biolóxica
e Materiais Moleculares (CiQUS) and Departamento de Química
Orgánica, Universidade de Santiago
de Compostela, 15782 Santiago de Compostela, Spain
| | - Dimas G. de Oteyza
- Centro
de Fisica de Materiales CFM/MPC, CSIC-UPV/EHU, 20018 San Sebastián, Spain
- Donostia
International Physics Center, 20018 San Sebastián, Spain
- Nanomaterials
and Nanotechnology Research Center (CINN), CSIC-UNIOVI-PA 33940 El Entrego, Spain
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4
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Beucher H, Schörgenhumer J, Merino E, Nevado C. Chelation-assisted C-C bond activation of biphenylene by gold(i) halides. Chem Sci 2021; 12:15084-15089. [PMID: 34909149 PMCID: PMC8612398 DOI: 10.1039/d1sc03814a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 10/26/2021] [Indexed: 01/25/2023] Open
Abstract
A chelation-assisted oxidative addition of gold(i) into the C-C bond of biphenylene is reported here. The presence of a coordinating group (pyridine, phosphine) in the biphenylene unit enabled the use of readily available gold(i) halide precursors providing a new, straightforward entry towards cyclometalated (N^C^C)- and (P^C)-gold(iii) complexes. Our study, combining spectroscopic and crystallographic data with DFT calculations, showcases the importance of neighboring, weakly coordinating groups towards the successful activation of strained C-C bonds by gold.
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Affiliation(s)
- Hélène Beucher
- Department of Chemistry, University of Zurich Winterthurerstrasse 190 Zurich CH 8057 Switzerland
| | - Johannes Schörgenhumer
- Department of Chemistry, University of Zurich Winterthurerstrasse 190 Zurich CH 8057 Switzerland
| | - Estíbaliz Merino
- Universidad de Alcalá, Departamento de Química Orgánica y Química Inorgánica, Instituto de Investigación Andrés M. del Río (IQAR), Facultad de Farmacia Alcalá de Henares 28805 Madrid Spain.,Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS) Ctra. de Colmenar Viejo, Km. 9.100 28034 Madrid Spain
| | - Cristina Nevado
- Department of Chemistry, University of Zurich Winterthurerstrasse 190 Zurich CH 8057 Switzerland
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5
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Yan J, Zhu ZL, Lee CS, Liu SH, Chou PT, Chi Y. Probing Electron Excitation Characters of Carboline-Based Bis-Tridentate Ir(III) Complexes. Molecules 2021; 26:molecules26196048. [PMID: 34641591 PMCID: PMC8512491 DOI: 10.3390/molecules26196048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 09/29/2021] [Accepted: 09/30/2021] [Indexed: 11/16/2022] Open
Abstract
In this work, we report a series of bis-tridentate Ir(III) metal complexes, comprising a dianionic pyrazole-pyridine-phenyl tridentate chelate and a monoanionic chelate bearing a peripheral carbene and carboline coordination fragment that is linked to the central phenyl group. All these Ir(III) complexes were synthesized with an efficient one-pot and two-step method, and their emission hue was fine-tuned by variation of the substituent at the central coordination entity (i.e., pyridinyl and phenyl group) of each of the tridentate chelates. Their photophysical and electrochemical properties, thermal stabilities and electroluminescence performances are examined and discussed comprehensively. The doped devices based on [Ir(cbF)(phyz1)] (Cb1) and [Ir(cbB)(phyz1)] (Cb4) give a maximum external quantum efficiency (current efficiency) of 16.6% (55.2 cd/A) and 13.9% (43.8 cd/A), respectively. The relatively high electroluminescence efficiencies indicate that bis-tridentate Ir(III) complexes are promising candidates for OLED applications.
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Affiliation(s)
- Jie Yan
- Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong SAR, China;
| | - Ze-Lin Zhu
- Center of Super-Diamond and Advanced Films (COSDAF) and Department of Chemistry, City University of Hong Kong, Hong Kong SAR, China;
| | - Chun-Sing Lee
- Center of Super-Diamond and Advanced Films (COSDAF) and Department of Chemistry, City University of Hong Kong, Hong Kong SAR, China;
- Correspondence: (C.-S.L.); (P.-T.C.); (Y.C.)
| | - Shih-Hung Liu
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan;
| | - Pi-Tai Chou
- Department of Chemistry, National Taiwan University, Taipei 10617, Taiwan;
- Correspondence: (C.-S.L.); (P.-T.C.); (Y.C.)
| | - Yun Chi
- Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong SAR, China;
- Center of Super-Diamond and Advanced Films (COSDAF) and Department of Chemistry, City University of Hong Kong, Hong Kong SAR, China;
- Correspondence: (C.-S.L.); (P.-T.C.); (Y.C.)
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6
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Takano H, Shibata T. Versatile Transformations of Biphenylenes by Transition-Metal Catalysts and Application for the Synthesis of Polycyclic Hydrocarbons. J SYN ORG CHEM JPN 2021. [DOI: 10.5059/yukigoseikyokaishi.79.849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hideaki Takano
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University
| | - Takanori Shibata
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University
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7
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Wu Y, Yang C, Liu J, Zhang M, Liu W, Li W, Wu C, Cheng G, Yang Q, Wei G, Che CM. Phosphorescent [3 + 2 + 1] coordinated Ir(iii) cyano complexes for achieving efficient phosphors and their application in OLED devices. Chem Sci 2021; 12:10165-10178. [PMID: 34377406 PMCID: PMC8336439 DOI: 10.1039/d1sc01426a] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 06/21/2021] [Indexed: 11/29/2022] Open
Abstract
A series of neutral [3 + 2 + 1] coordinated iridium complexes bearing tridentate bis-NHC carbene chelates (2,6-bisimidazolylidene benzene), bidentate chelates (C^N ligands, e.g. derivatives of 2-phenylpridine), and monodentate ions (halides and pseudo-halides, such as Br, I, OCN and CN ions) have been systematically designed and synthesized. X-ray single crystal structure characterization revealed that the nitrogen atom in C^N ligands is located trans to the carbon atom in the benzene ring in tridentate chelates, while the coordinating carbon atom in C^N ligands is located trans to the monodentate ligands. Photophysical studies reveal that the C^N ligands play a vital role in tuning the UV absorption and emission properties, while the tridentate bis-NHC carbene chelates influence the lowest absorption band and emission energy when compared to heteroleptic Ir(ppy)2(acac) [i.e. molar absorptivities at ∼450 nm for ppy-OCN and Ir(ppy)2(acac) are 350 M-1 cm-1 and 1520 M-1 cm-1 and emission maximum peaks are at 465 nm and 515 nm respectively]. Among monodentate ligands that the complexes bear, the group containing the cyanide ligand displays higher emission energy, higher photophysical quantum yields, longer triplet lifetimes and better electrochemical and thermal stabilities than those of cyanate and bromide. Particularly, a blue organic light-emitting diode (OLED) based on dfppy-CN exhibited a maximum external quantum efficiency of 22.94% with CIE coordinates of (0.14, 0.24). Furthermore, a small efficiency roll-off of 5.7% was observed for this device at 1000 cd m-2.
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Affiliation(s)
- Yuan Wu
- PURI Materials 6F, Block A, Jiazhaoye Xindong Kechuang Park, 71st Zone Xindong, Baoan District Shenzhen 518133 China
| | - Chen Yang
- PURI Materials 6F, Block A, Jiazhaoye Xindong Kechuang Park, 71st Zone Xindong, Baoan District Shenzhen 518133 China
- School of Chemical Engineering and Light Industry, Guangdong University of Technology Guangzhou 510006 China
| | - Jie Liu
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University Xi'an 710049 China
| | - Meng Zhang
- Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua Shenzhen International Graduate School, Tsinghua University Shenzhen 518055 China
| | - Weiqiang Liu
- State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials, Department of Chemistry, The University of Hong Kong Pokfulam Road Hong Kong SAR China
| | - Wansi Li
- Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua Shenzhen International Graduate School, Tsinghua University Shenzhen 518055 China
| | - Chengcheng Wu
- PURI Materials 6F, Block A, Jiazhaoye Xindong Kechuang Park, 71st Zone Xindong, Baoan District Shenzhen 518133 China
| | - Gang Cheng
- State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials, Department of Chemistry, The University of Hong Kong Pokfulam Road Hong Kong SAR China
- HKU Shenzhen Institute of Research and Innovation Shenzhen 518053 China
| | - Qingdan Yang
- School of Chemical Engineering and Light Industry, Guangdong University of Technology Guangzhou 510006 China
| | - Guodan Wei
- Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua Shenzhen International Graduate School, Tsinghua University Shenzhen 518055 China
| | - Chi-Ming Che
- State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials, Department of Chemistry, The University of Hong Kong Pokfulam Road Hong Kong SAR China
- HKU Shenzhen Institute of Research and Innovation Shenzhen 518053 China
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8
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Feuerstein W, Breher F. Non-palindromic (C^C^D) gold(III) pincer complexes are not accessible by intramolecular oxidative addition of biphenylenes - an experimental and quantum chemical study. Dalton Trans 2021; 50:9754-9767. [PMID: 34169955 DOI: 10.1039/d1dt00953b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
We herein report on the synthesis of biphenylenes substituted with a pyridine (N), a phosphine (P) and a carbene (C') donor as well as a carbene donor with additional pyridine in the lateral position. We describe the synthesis and structures of derived gold(i) complexes, which we tried to use for the synthesis of non-palindromic [(C^C^D)AuIII] pincer complexes by means of an intramolecular oxidative addition of the strained biphenylene ring. However, the anticipated formation of gold(iii) complexes failed due to kinetic and thermodynamic reasons, which we extensively investigated by quantum chemical calculations. Furthermore, we shed light on the oxidative addition of biphenylene to two different gold(i) systems reported in the literature. Our comprehensive quantum-chemical analysis is complemented by NMR experiments.
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Affiliation(s)
- Wolfram Feuerstein
- Karlsruhe Institute of Technology (KIT), Institute of Inorganic Chemistry, Division Molecular Chemistry, Engesserstr. 15, 76131 Karlsruhe, Germany.
| | - Frank Breher
- Karlsruhe Institute of Technology (KIT), Institute of Inorganic Chemistry, Division Molecular Chemistry, Engesserstr. 15, 76131 Karlsruhe, Germany.
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9
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Cheung WM, Chong MC, Sung HHY, Cheng SC, Williams ID, Ko CC, Leung WH. Synthesis, structure and reactivity of iridium complexes containing a bis-cyclometalated tridentate C^N^C ligand. Dalton Trans 2021; 50:8512-8523. [PMID: 34060573 DOI: 10.1039/d1dt01269j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In an effort to synthesize cyclometalated iridium complexes containing a tridentate C^N^C ligand, transmetallation of [Hg(HC^N^C)Cl] (1) (H2C^N^C = 2,6-bis(4-tert-butylphenyl)pyridine) with various organoiridium starting materials has been studied. The treatment of 1 with [Ir(cod)Cl]2 (cod = 1,5-cyclooctadiene) in acetonitrile at room temperature afforded a hexanuclear Ir4Hg2 complex, [Cl(κ2C,N-HC^N^C)(cod)IrHgIr(cod)Cl2]2 (2), which features Ir-Hg-Ir and Ir-Cl-Ir bridges. Refluxing 2 with sodium acetate in tetrahydrofuran (thf) resulted in cyclometalation of the bidentate HC^N^C ligand and formation of trinuclear [(C^N^C)(cod)IrHgIr(cod)Cl2] (3). On the other hand, refluxing [Ir(cod)Cl]2 with 1 and sodium acetate in thf yielded [Ir(C^N^C)(cod)(HgCl)] (4). Chlorination of 4 with PhICl2 gave [Ir(C^N^C)(cod)Cl]·HgCl2 (5·HgCl2) that reacted with tricyclohexylphosphine to yield Hg-free [Ir(C^N^C)(cod)Cl] (5). Chloride abstraction of 5 with silver(i) triflate (AgOTf) gave [Ir(C^N^C)(cod)(H2O)](OTf) (6) that can catalyze the cyclopropanation of styrene with ethyl diazoacetate. Reaction of 1 and [Ir(CO)2Cl(py)] (py = pyridine) with sodium acetate in refluxing thf afforded [Ir(C^N^C)(HgCl)(py)(CO)] (7), in which the carbonyl ligand is coplanar with the C^N^C ligand. On the other hand, refluxing 1 with (PPh4)[Ir(CO)2Cl2] and sodium acetate in acetonitrile gave [Ir(C^N^C)(κ2C,N-HC^N^C)(CO)] (8), the carbonyl ligand of which is trans to the pyridyl ring of the bidentate HC^N^C ligand. Upon irradiation with UV light 8 in thf was isomerized to 8', in which the carbonyl is trans to a phenyl group of the bidentate HC^N^C ligand. The isomer pair 8 and 8' exhibited emission at 548 and 514 nm in EtOH/MeOH at 77 K with lifetime of 84.0 and 64.6 μs, respectively. Protonation of 8 with p-toluenesulfonic acid (TsOH) afforded the bis(bidentate) tosylate complex [Ir(κ2C,N-HC^N^C)2(CO)(OTs)] (9) that could be reconverted to 8 upon treatment with sodium acetate. The electrochemistry of the Ir(C^N^C) complexes has been studied using cyclic voltammetry. Reaction of [Ir(PPh3)3Cl] with 1 and sodium acetate in refluxing thf led to isolation of the previously reported compound [Ir(κ2P,C-C6H4PPh2)2(PPh3)Cl] (10). The crystal structures of 2-5, 8, 8', 9 and 10 have been determined.
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Affiliation(s)
- Wai-Man Cheung
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.
| | - Man-Chun Chong
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.
| | - Herman H-Y Sung
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.
| | - Shun-Cheung Cheng
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.
| | - Ian D Williams
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.
| | - Chi-Chiu Ko
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.
| | - Wa-Hung Leung
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.
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10
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Takano H, Ito T, Kanyiva KS, Shibata T. Recent Advances of Biphenylene: Synthesis, Reactions and Uses. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900111] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Hideaki Takano
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; 3-4-1 Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Takeharu Ito
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; 3-4-1 Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Kyalo Stephen Kanyiva
- Global Center for Science and Engineering; School of Advanced Science and Engineering; Waseda University; 3-4-1 Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Takanori Shibata
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; 3-4-1 Okubo, Shinjuku Tokyo 169-8555 Japan
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11
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Takano H, Ito T, Kanyiva KS, Shibata T. Regioselective Activation of a Sterically More Hindered C−C Bond of Biphenylenes Using an Alkene as Both a Directing Group and a Reaction Moiety. Chemistry 2018; 24:15173-15177. [DOI: 10.1002/chem.201804044] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Indexed: 11/05/2022]
Affiliation(s)
- Hideaki Takano
- Department of Chemistry and Biochemistry, School of Advanced Science and EngineeringWaseda University 3-4-1 Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Takeharu Ito
- Department of Chemistry and Biochemistry, School of Advanced Science and EngineeringWaseda University 3-4-1 Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Kyalo Stephen Kanyiva
- Global Center for Science and Engineering, School of Advanced Science and EngineeringWaseda University 3-4-1 Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Takanori Shibata
- Department of Chemistry and Biochemistry, School of Advanced Science and EngineeringWaseda University 3-4-1 Okubo, Shinjuku Tokyo 169-8555 Japan
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12
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Frejka D, Ulč J, Kantchev EAB, Císařová I, Kotora M. Catalyst-Counterion Controlled, Regioselective C–C Bond Cleavage in 1-Azabiphenylene: Synthesis of Selectively Substituted Benzoisoquinolines. ACS Catal 2018. [DOI: 10.1021/acscatal.8b01874] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- David Frejka
- Department of Organic Chemistry, Faculty of Science, Charles University, Albertov 2030, 128 43 Prague 2, Czech Republic
| | - Jan Ulč
- Department of Organic Chemistry, Faculty of Science, Charles University, Albertov 2030, 128 43 Prague 2, Czech Republic
| | - Eric Assen B. Kantchev
- School of Chemistry and Chemical Engineering, Hefei University of Technology, 193 Tunxi Road, Hefei 230009, China
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Albertov 2030, 128 43 Prague 2, Czech Republic
| | - Martin Kotora
- Department of Organic Chemistry, Faculty of Science, Charles University, Albertov 2030, 128 43 Prague 2, Czech Republic
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13
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Hierlinger C, Flint HV, Cordes DB, Slawin AM, Gibson EA, Jacquemin D, Guerchais V, Zysman-Colman E. A panchromatic, near infrared Ir(III) emitter bearing a tripodal C^N^C ligand as a dye for dye-sensitized solar cells. Polyhedron 2018. [DOI: 10.1016/j.poly.2017.12.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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Dammann W, Buban T, Schiller C, Burger P. Dinuclear tethered pyridine, diimine complexes. Dalton Trans 2018; 47:12105-12117. [DOI: 10.1039/c8dt02347f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis and structures of aryl tethered pyridine, diimine complexes.
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Affiliation(s)
- Wiebke Dammann
- Institut für Anorganische und Angewandte Chemie
- Fachbereich Chemie
- Universität Hamburg
- 20146 Hamburg
- Germany
| | - Tabea Buban
- Institut für Anorganische und Angewandte Chemie
- Fachbereich Chemie
- Universität Hamburg
- 20146 Hamburg
- Germany
| | - Carl Schiller
- Institut für Anorganische und Angewandte Chemie
- Fachbereich Chemie
- Universität Hamburg
- 20146 Hamburg
- Germany
| | - Peter Burger
- Institut für Anorganische und Angewandte Chemie
- Fachbereich Chemie
- Universität Hamburg
- 20146 Hamburg
- Germany
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15
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More hydra than Janus – Non-classical coordination modes in complexes of oligopyridine ligands. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.06.006] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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16
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Esteruelas MA, Gómez-Bautista D, López AM, Oñate E, Tsai JY, Xia C. η1
-Arene Complexes as Intermediates in the Preparation of Molecular Phosphorescent Iridium(III) Complexes. Chemistry 2017; 23:15729-15737. [DOI: 10.1002/chem.201703252] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Indexed: 12/21/2022]
Affiliation(s)
- Miguel A. Esteruelas
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA); Universidad de Zaragoza-CSIC; 50009 Zaragoza Spain
| | - Daniel Gómez-Bautista
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA); Universidad de Zaragoza-CSIC; 50009 Zaragoza Spain
| | - Ana M. López
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA); Universidad de Zaragoza-CSIC; 50009 Zaragoza Spain
| | - Enrique Oñate
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Centro de Innovación en Química Avanzada (ORFEO-CINQA); Universidad de Zaragoza-CSIC; 50009 Zaragoza Spain
| | - Jui-Yi Tsai
- Universal Display Corporation; 375 Phillips Boulevard Ewing New Jersey 08618 USA
| | - Chuanjun Xia
- Universal Display Corporation; 375 Phillips Boulevard Ewing New Jersey 08618 USA
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17
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Chi Y, Chang TK, Ganesan P, Rajakannu P. Emissive bis-tridentate Ir(III) metal complexes: Tactics, photophysics and applications. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2016.11.016] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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18
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Kuwabara J, Namekawa T, Sakabe E, Haga MA, Kanbara T. Luminescent Ir(III) complexes bearing benzothiazole or benzoxazole-based pincer ligand. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.04.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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19
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Rees TW, Liao J, Sinopoli A, Male L, Calogero G, Curchod BFE, Baranoff E. Synthesis and Characterization of a Series of Bis-homoleptic Cycloruthenates with Terdentate Ligands as a Family of Panchromatic Dyes. Inorg Chem 2017; 56:9903-9912. [PMID: 28763219 DOI: 10.1021/acs.inorgchem.7b01412] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A series of six homoleptic bis-cyclometalated ruthenium complexes, Ru(N^N^C)2, is reported where N^N^C is a 6-(2,4-difluoro-3-R3-phenyl)-4-R2-4'-R1-2,2'-bipyridine with R3 = -H or -CF3 and R2 and R1 = -COOEt or -CF3. An effective synthesis of the ligands and the complexes is described. The UV-visible absorption studies demonstrate that these complexes are panchromatic dyes absorbing up to 900 nm. Importantly, the onset of absorption depends only on the substitution on the metalated phenyl, whereas the intensity of absorption throughout the spectra is a function of substituents on both the phenyl and the bipyridine moieties. The same trend is observed in electrochemistry as the redox gap depends only on the substitution on the metalated phenyl, whereas the oxidation and reduction potentials are a function of substituents on both the phenyl and the bipyridine moieties. Preliminary tests as sensitizer for dye-sensitized solar cells demonstrate that the number of anchoring groups on the dye has a major influence on the device efficiency.
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Affiliation(s)
- Thomas W Rees
- School of Chemistry, University of Birmingham , Edgbaston, Birmingham B15 2TT, U.K
| | - JinFeng Liao
- School of Chemistry, University of Birmingham , Edgbaston, Birmingham B15 2TT, U.K.,Sun Yat-sen University , Guangzhou 510275, P.R. China
| | - Alessandro Sinopoli
- Qatar Environment & Energy Institute (QEERI), Hamad bin Khalifa University (HBKU) , Doha Qatar
| | - Louise Male
- School of Chemistry, University of Birmingham , Edgbaston, Birmingham B15 2TT, U.K
| | - Giuseppe Calogero
- CNR-IPCF, Istituto per i Processi Chimico-Fisici , Messina 98158, Italy
| | - Basile F E Curchod
- Centre for Computational Chemistry, School of Chemistry, University of Bristol , Bristol BS8 1TS, U.K
| | - Etienne Baranoff
- School of Chemistry, University of Birmingham , Edgbaston, Birmingham B15 2TT, U.K
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20
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Li YS, Liao JL, Lin KT, Hung WY, Liu SH, Lee GH, Chou PT, Chi Y. Sky Blue-Emitting Iridium(III) Complexes Bearing Nonplanar Tetradentate Chromophore and Bidentate Ancillary. Inorg Chem 2017; 56:10054-10060. [DOI: 10.1021/acs.inorgchem.7b01583] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Yu-Sian Li
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Jia-Ling Liao
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Ke-Ting Lin
- Institute of Optoelectronic Sciences, National Taiwan Ocean University, Keelung 202, Taiwan
| | - Wen-Yi Hung
- Institute of Optoelectronic Sciences, National Taiwan Ocean University, Keelung 202, Taiwan
| | - Shih-Hung Liu
- Department of Chemistry and Instrumentation Center, National Taiwan University, Taipei 10617, Taiwan
| | - Gene-Hsiang Lee
- Department of Chemistry and Instrumentation Center, National Taiwan University, Taipei 10617, Taiwan
| | - Pi-Tai Chou
- Department of Chemistry and Instrumentation Center, National Taiwan University, Taipei 10617, Taiwan
| | - Yun Chi
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
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21
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Hierlinger C, Roisnel T, Cordes DB, Slawin AMZ, Jacquemin D, Guerchais V, Zysman-Colman E. An Unprecedented Family of Luminescent Iridium(III) Complexes Bearing a Six-Membered Chelated Tridentate C^N^C Ligand. Inorg Chem 2017; 56:5182-5188. [PMID: 28394570 PMCID: PMC5417592 DOI: 10.1021/acs.inorgchem.7b00328] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Indexed: 02/06/2023]
Abstract
A new family consisting of three luminescent neutral Ir(III) complexes with the unprecedented [Ir(C^N^C)(N^N)Cl] architecture, where C^N^C is a bis(six-membered) chelating tridentate tripod ligand derived from 2-benzhydrylpyridine (bnpy) and N^N is 4,4'-di-tert-butyl-2,2'-bipyridine (dtBubpy), is reported. X-ray crystallography reveals an unexpected and unusual double C-H bond activation of the two distal nonconjugated phenyl rings of the bnpy coupled with a very short Ir-Cl bond trans to the pyridine of the bnpy ligand. Depending on the substitution on the bnpy ligand, phosphorescence, ranging from yellow to red, is observed in dichloromethane solution. A combined study using density functional theory (DFT) and time-dependent DFT (TD-DFT) corroborates the mixed charge-transfer nature of the related excited states.
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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, United Kingdom
| | - Thierry Roisnel
- Institut des Sciences
Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1, Campus de Beaulieu, 35042 Rennes Cedex, France
| | - David B. Cordes
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St. Andrews, St. Andrews, Fife, KY16 9ST, United Kingdom
| | - Alexandra M. Z. Slawin
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St. Andrews, St. Andrews, Fife, KY16 9ST, United Kingdom
| | - 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, United Kingdom
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22
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Wilklow-Marnell M, Brennessel WW, Jones WD. Formation of 5-membered metallacycles at iPrPCPIr by C–H, O–H, and C–CO bond cleavage. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.03.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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23
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Lu CW, Wang Y, Chi Y. Metal Complexes with Azolate-Functionalized Multidentate Ligands: Tactical Designs and Optoelectronic Applications. Chemistry 2016; 22:17892-17908. [DOI: 10.1002/chem.201601216] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Chin-Wei Lu
- Department of Chemistry and Low Carbon Energy Research Center; National Tsing Hua University; Hsinchu 30013 Taiwan
| | - Yang Wang
- Department of Chemistry and Low Carbon Energy Research Center; National Tsing Hua University; Hsinchu 30013 Taiwan
| | - Yun Chi
- Department of Chemistry and Low Carbon Energy Research Center; National Tsing Hua University; Hsinchu 30013 Taiwan
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24
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25
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Kumar R, Linden A, Nevado C. Luminescent (N^C^C) Gold(III) Complexes: Stabilized Gold(III) Fluorides. Angew Chem Int Ed Engl 2015; 54:14287-90. [PMID: 26439538 DOI: 10.1002/anie.201505533] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Indexed: 11/06/2022]
Abstract
We report the design, synthesis, and application of a (N^C^C)-ligand framework able to stabilize highly electron-deprived gold(III) species. This novel platform enabled the preparation of C(sp(2))-gold(III) fluorides for the first time in monomeric, easy-to-handle, bench-stable form by a Cl/F ligand-exchange reaction. Devoid of oxidative conditions or stoichiometric use of toxic Hg salts, this method was applied to the preparation of multiple [C(sp(2))-Au(III)-F] complexes, which were used as mechanistic probes for the study of the unique properties and intrinsic reactivity of Au-F bonds. The improved photophysical properties of [(N^C^C)Au(III)] complexes compared to classical pincer (C^N^C)-Au systems paves the way for the design of new late-transition-metal-based OLEDs.
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Affiliation(s)
- Roopender Kumar
- Department of Chemistry, University of Zürich, Winterthurerstrasse 180, 8057 Zürich (Switzerland)
| | - Anthony Linden
- Department of Chemistry, University of Zürich, Winterthurerstrasse 180, 8057 Zürich (Switzerland)
| | - Cristina Nevado
- Department of Chemistry, University of Zürich, Winterthurerstrasse 180, 8057 Zürich (Switzerland).
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26
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Kumar R, Linden A, Nevado C. Luminescent (N^C^C) Gold(III) Complexes: Stabilized Gold(III) Fluorides. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201505533] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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27
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Cai Y, Samedov K, Dolinar BS, Albright H, Song Z, Zhang C, Tang BZ, West R. AEE-active cyclic tetraphenylsilole derivatives with ∼100% solid-state fluorescence quantum efficiency. Dalton Trans 2015; 44:12970-5. [PMID: 26119483 DOI: 10.1039/c5dt01846c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Two new strongly AEE active (I/I0 ≈ 94) tetraphenylsilole-containing cyclosiloxanes with cyan emissions (λem = 500 nm) and ∼100% solid state fluorescence quantum yields are reported. The intra- and intermolecular C-Hπ interactions in the crystal play a major role in the observed high solid state fluorescence quantum yields.
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Affiliation(s)
- Yuanjing Cai
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, People's Republic of China.
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28
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Cai Y, Samedov K, Dolinar BS, Albright H, Guzei IA, Hu R, Zhang C, West R. Ring‐Shaped Silafluorene Derivatives as Efficient Solid‐State UV‐Fluorophores: Synthesis, Characterization, and Photoluminescent Properties. Chemistry 2014; 20:14040-50. [DOI: 10.1002/chem.201404350] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Indexed: 11/07/2022]
Affiliation(s)
- Yuanjing Cai
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070 (P. R. China)
- Department of Chemistry, University of Wisconsin‐Madison, 1101 University Ave., Madison Wisconsin 53706 (USA), Fax: (+1) 608‐265‐6815
| | - Kerim Samedov
- Department of Chemistry, University of Wisconsin‐Madison, 1101 University Ave., Madison Wisconsin 53706 (USA), Fax: (+1) 608‐265‐6815
| | - Brian S. Dolinar
- Department of Chemistry, University of Wisconsin‐Madison, 1101 University Ave., Madison Wisconsin 53706 (USA), Fax: (+1) 608‐265‐6815
| | - Haley Albright
- Department of Chemistry, University of Wisconsin‐Madison, 1101 University Ave., Madison Wisconsin 53706 (USA), Fax: (+1) 608‐265‐6815
| | - Ilia A. Guzei
- Department of Chemistry, University of Wisconsin‐Madison, 1101 University Ave., Madison Wisconsin 53706 (USA), Fax: (+1) 608‐265‐6815
| | - Rongrong Hu
- Department of Chemistry, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong (P. R. China)
| | - Chaocan Zhang
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070 (P. R. China)
| | - Robert West
- Department of Chemistry, University of Wisconsin‐Madison, 1101 University Ave., Madison Wisconsin 53706 (USA), Fax: (+1) 608‐265‐6815
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29
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Xiang H, Cheng J, Ma X, Zhou X, Chruma JJ. Near-infrared phosphorescence: materials and applications. Chem Soc Rev 2013; 42:6128-85. [DOI: 10.1039/c3cs60029g] [Citation(s) in RCA: 491] [Impact Index Per Article: 44.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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30
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31
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You Y, Nam W. Photofunctional triplet excited states of cyclometalated Ir(iii) complexes: beyond electroluminescence. Chem Soc Rev 2012; 41:7061-84. [DOI: 10.1039/c2cs35171d] [Citation(s) in RCA: 520] [Impact Index Per Article: 43.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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