1
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Kromer S, Roy S, Yarnell JE, Taliaferro CM, Castellano FN. Excited state processes of dinuclear Pt(II) complexes bridged by 8-hydroxyquinoline. Dalton Trans 2023; 52:4008-4016. [PMID: 36880277 DOI: 10.1039/d3dt00348e] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
Abstract
Dinuclear d8 Pt(II) complexes, where two mononuclear square planar Pt(II) units are bridged in an "A-frame" geometry, possess photophysical properties characterised by either metal-to-ligand-(MLCT) or metal-metal-ligand-to-ligand charge transfer (MMLCT) transitions determined by the distance between the two Pt(II) centres. When using 8-hydroxyquinoline (8HQH) as the bridging ligand to construct novel dinuclear complexes with general formula [C^NPt(μ-8HQ)]2, where C^N is either 2-phenylpyridine (1) or 7,8-benzoquinoline (2), triplet ligand-centered (3LC) photophysics results echoing that in a mononuclear model chromophore, [Pt(8HQ)2] (3). The lengthened Pt-Pt distances of 3.255 Å (1) and 3.243 Å (2) results in a lowest energy absorption centred around 480 nm assigned as having mixed LC/MLCT character by TD-DFT, mirroring the visible absorption spectrum of 3. Additionally, 1 and 2 exhibit 3LC photoluminescence with limited quantum yields (0.008) from broad transitions centred near 680 nm. Photoexcitation of 1-3 leads to an initially prepared excited state that relaxes within 15 ps to a 3LC excited state centred on the 8HQ bridge, which then persists for several microseconds. All the experimental results correspond well with DFT electronic structure calculations.
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Affiliation(s)
- Sarah Kromer
- Department of Chemistry, North Carolina State University, Raleigh, NC 27695-8204, USA.
| | - Subhangi Roy
- Department of Chemistry, North Carolina State University, Raleigh, NC 27695-8204, USA.
| | - James E Yarnell
- Department of Chemistry, North Carolina State University, Raleigh, NC 27695-8204, USA.
| | - Chelsea M Taliaferro
- Department of Chemistry, North Carolina State University, Raleigh, NC 27695-8204, USA.
| | - Felix N Castellano
- Department of Chemistry, North Carolina State University, Raleigh, NC 27695-8204, USA.
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2
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Horiuchi S, Umakoshi K. Recent advances in pyrazolato-bridged homo- and heterometallic polynuclear platinum and palladium complexes. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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3
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Recent developments of photoactive Cu(I) and Ag(I) complexes with diphosphine and related ligands. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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4
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Zeng H, Wang JY, Shi LX, Zhang LY, Chen ZN. Platinum(II)-Gold(I) Heterotrinuclear Complexes with N,N’-Diarylamine-functionalized Acetylide Ligands for Red Electroluminescence. Inorg Chem Front 2022. [DOI: 10.1039/d2qi00657j] [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 this work, 4-substituted phenylacetylides with electron-rich N,N’-diarylamine groups are used for the design of triphosphine-supported PtAu2 complexes with red phosphorescence. Although PtAu2 complex 1 with 4-ethynyl-N,N’-diphenylaniline displays orange emission...
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5
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Vargaftik MN, Nefedov SE. Ligand Exchange and Pyrazole Deprotonation in the Reaction of Trinuclear Palladium(II) Acetate with Binuclear Zinc Pivalate Pyrazole Pyrazolate. RUSS J COORD CHEM+ 2021. [DOI: 10.1134/s1070328421100079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Sicilia V, Arnal L, Escudero D, Fuertes S, Martin A. Chameleonic Photo- and Mechanoluminescence in Pyrazolate-Bridged NHC Cyclometalated Platinum Complexes. Inorg Chem 2021; 60:12274-12284. [PMID: 34339189 PMCID: PMC8892954 DOI: 10.1021/acs.inorgchem.1c01470] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
DFT investigations on the ground (GS) and the first triplet (T1) excited state potential energy surfaces (PES) were performed on a new series of platinum-butterfly complexes, [{Pt(C∧C*)(μ-Rpz)}2] (Rpz: pz, 1; 4-Mepz, 2; 3,5-dmpz, 3; 3,5-dppz, 4), containing a cyclometalated NHC in their wings. The geometries of two close-lying local minima corresponding to butterfly spread conformers, 1s-4s, and butterfly folded ones, 1f-4f, with long and short Pt-Pt separations, respectively, were optimized in the GS and T1 PES. A comparison of the GS and T1 energy profiles revealed that an opposite trend is obtained in the relative stability of folded and spread conformers, the latter being more stabilized in their GS. Small ΔG (s/f) along with small-energy barriers in the GS support the coexistence of both kinds of conformers, which influence the photo- and mechanoluminescence of these complexes. In 5 wt % doped PMMA films in the air, these complexes exhibit intense sky-blue emissions (PLQY: 72.0-85.9%) upon excitation at λ ≤ 380 nm arising from 3IL/MLCT excited states, corresponding to the predominant 1s-4s conformers. Upon excitation at longer wavelengths (up to 450 nm), the minor 1f-4f conformers afford a blue emission as well, with PLQY still significant (40%-60%). In the solid state, the as-prepared powder of 4 exhibits a greenish-blue emission with QY ∼ 29%, mainly due to 3IL/3MLCT excited states of butterfly spread molecules, 4s. Mechanical grinding resulted in an enhanced and yellowish-green emission (QY ∼ 51%) due to the 3MMLCT excited states of butterfly folded molecules, 4f, in such a way that the mechanoluminescence has been associated with an intramolecular structural change induced by mechanical grinding.
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Affiliation(s)
- Violeta Sicilia
- Departamento de Quimica Inorganica, Escuela de Ingenieria y Arquitectura de Zaragoza, Instituto de Sintesis Quimica y Catalisis Homogenea (ISQCH), CSIC - Universidad de Zaragoza, Campus Rio Ebro, Edificio Torres Quevedo, 50018, Zaragoza, Spain
| | - Lorenzo Arnal
- Departamento de Quimica Inorganica, Facultad de Ciencias, Instituto de Sintesis Quimica y Catalisis Homogenea (ISQCH), CSIC - Universidad de Zaragoza, Pedro Cerbuna 12, 50009, Zaragoza, Spain
| | - Daniel Escudero
- Department of Chemistry, KU Leuven, Celestijnenlaan 200f - box 2404, 3001 Leuven, Belgium
| | - Sara Fuertes
- Departamento de Quimica Inorganica, Facultad de Ciencias, Instituto de Sintesis Quimica y Catalisis Homogenea (ISQCH), CSIC - Universidad de Zaragoza, Pedro Cerbuna 12, 50009, Zaragoza, Spain
| | - Antonio Martin
- Departamento de Quimica Inorganica, Facultad de Ciencias, Instituto de Sintesis Quimica y Catalisis Homogenea (ISQCH), CSIC - Universidad de Zaragoza, Pedro Cerbuna 12, 50009, Zaragoza, Spain
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7
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Horiuchi S, Tanaka S, Moon S, Sakuda E, Ito A, Arikawa Y, Umakoshi K. A Heteropolynuclear Pt-Ag System Having Cycloplatinated Rollover Bipyridyl Units. Inorg Chem 2021; 60:1513-1522. [PMID: 33444013 DOI: 10.1021/acs.inorgchem.0c02843] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The synthesis and photophysical properties of the heteropolynuclear Pt-Ag complex having cyclometalated rollover bipyridine ligands (bpy*) and bridging pyrazolato ligands are reported. The Pt2Ag2 complex was synthesized by two step reactions from a Pt(II) complex precursor having the rollover bpy* ligand, [Pt(bpy*)(dmso)Cl], with 3,5-dimethylpyrazole (Me2pzH) and a subsequent replacement of NH protons in the Me2pzH moieties with the Ag(I) ion. The Pt2Ag2 complex exists as a mixture of U- and Z-shaped isomers in solution, whose structures were clearly determined by single-crystal X-ray structural analyses. NMR studies using the single crystals revealed rapid isomerization of the Pt2Ag2 complexes in solution, although the Pt2Ag2 structures were supported effectively by the multiple metal-metal interactions. Furthermore, the Pt2Ag2 framework can capture a Ag(I) ion during the U-Z isomerization to afford a Pt2Ag3 core with the formation of Pt → Ag dative bonds. The Pt2Ag3 complex showed further aggregation to form a dimer structure in the presence of coordinating solvent via the crystallization process. The formation of Pt → Ag dative bonds significantly changes the emission energy from the Pt2Ag2 complex, while the emission spectra of U- and Z-isomers of Pt2Ag2 complex almost coincide with each other and their emissive properties are very similar. The density functional theory (DFT) and time-dependent DFT (TD-DFT) calculations revealed the effects of additional Ag(I) ion on the photophysical properties of the heteropolynuclear Pt-Ag complexes bearing the rollover bpy* ligands.
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Affiliation(s)
- Shinnosuke Horiuchi
- Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Seiya Tanaka
- Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Sangjoon Moon
- Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Eri Sakuda
- Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Akitaka Ito
- Graduate School of Engineering, Kochi University of Technology, 185, Miyanokuchi, Tosayamada, Kami, Kochi 782-1502, Japan
| | - Yasuhiro Arikawa
- Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, Bunkyo-machi, Nagasaki 852-8521, Japan
| | - Keisuke Umakoshi
- Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, Bunkyo-machi, Nagasaki 852-8521, Japan
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8
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Quan J, Chen ZH, Zhang X, Wang JY, Zhang LY, Chen ZN. Geometrically isomeric Pt 2Ag 2 acetylide complexes of 2,6-bis(diphenylphosphino)pyridine: luminescent and vapochromic properties. Inorg Chem Front 2021. [DOI: 10.1039/d1qi00111f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Geometrically isomeric cis- and trans-Pt2Ag2 alkynyl complexes are characterized by X-ray crystallography with trans-isomers showing bright phosphorescence and interesting vaporchromic properties.
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Affiliation(s)
- Jian Quan
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- China
| | - Zhong-Hui Chen
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- China
| | - Xu Zhang
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- China
| | - Jin-Yun Wang
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- China
| | - Li-Yi Zhang
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- China
| | - Zhong-Ning Chen
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- China
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9
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Horiuchi S, Umakoshi K. Emissive Supramolecular Systems Based on Reversible Bond Formation and Noncovalent Interactions. CHEM REC 2020; 21:469-479. [PMID: 33236813 DOI: 10.1002/tcr.202000125] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 11/05/2020] [Indexed: 12/16/2022]
Abstract
Noncovalent interactions and reversible bond formations are widely seen in natural systems for the construction of sophisticated molecular systems that perform various biological processes. Inspired by the natural systems, luminescent supramolecular systems constructed by coordination-driven self-assembly and homometallic metal-metal interations have been studied increasingly. These supramolecular systems show fascinating luminescent behaviors that are not observed from single components. This review summarizes our progress in the development of two types of unique luminescent supramolecular systems. The mononuclear Pt(II) complex units can sandwich coinage metal ions to form heteropolynuclear complexes involving heterometallic metal-metal interactions. A close proximity of the two or three different metal ions by the noncovalent forces lead to orbital overlapping among the coinage metal ions and the Pt(II) complex units, showing emission color change accompanied with structural transformation and reversible metal binding behaviors. Emissive host-guest systems consisting of mononuclear metal complexes and a hydrogen-bonded capsule are also developed, that show a unique encapsulation-induced emission enhancement (EIEE) behavior.
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Affiliation(s)
- Shinnosuke Horiuchi
- Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, Bunkyo-machi, Nagasaki, 852-8521, Japan
| | - Keisuke Umakoshi
- Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, Bunkyo-machi, Nagasaki, 852-8521, Japan
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10
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Wu X, Chen DG, Liu D, Liu SH, Shen SW, Wu CI, Xie G, Zhou J, Huang ZX, Huang CY, Su SJ, Zhu W, Chou PT. Highly Emissive Dinuclear Platinum(III) Complexes. J Am Chem Soc 2020; 142:7469-7479. [DOI: 10.1021/jacs.9b13956] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Xiugang Wu
- School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Jiangsu Engineering Laboratory of Light-Electricity-Heat Energy-Converting Materials and Applications, Jiangsu Key Laboratories of Environment-Friendly Polymers, National Experimental Demonstration Center for Materials Science and Engineering, Changzhou University, Changzhou 213164, China
| | | | - Denghui Liu
- School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Jiangsu Engineering Laboratory of Light-Electricity-Heat Energy-Converting Materials and Applications, Jiangsu Key Laboratories of Environment-Friendly Polymers, National Experimental Demonstration Center for Materials Science and Engineering, Changzhou University, Changzhou 213164, China
| | | | | | | | - Guohua Xie
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Hubei Key Lab on Organic and Polymeric Optoelectronic Materials, Department of Chemistry, Wuhan University, Wuhan 430072, China
| | - Jianwei Zhou
- School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Jiangsu Engineering Laboratory of Light-Electricity-Heat Energy-Converting Materials and Applications, Jiangsu Key Laboratories of Environment-Friendly Polymers, National Experimental Demonstration Center for Materials Science and Engineering, Changzhou University, Changzhou 213164, China
| | | | | | - Shi-Jian Su
- Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou 510640, China
| | - Weiguo Zhu
- School of Materials Science and Engineering, Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Jiangsu Engineering Laboratory of Light-Electricity-Heat Energy-Converting Materials and Applications, Jiangsu Key Laboratories of Environment-Friendly Polymers, National Experimental Demonstration Center for Materials Science and Engineering, Changzhou University, Changzhou 213164, China
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11
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Wang Q, Xiao H, Wu Y, Wang ZY, Zheng DS, Chen ZN. From homonuclear to heteronuclear: a viable strategy to promote and modulate phosphorescence. Chem Commun (Camb) 2020; 56:10607-10620. [DOI: 10.1039/d0cc04021e] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The use of weakly emissive homonuclear Pt(ii) precursors to fabricate Pt–M heteronuclear complexes with intermetallic contacts paves a unique avenue to achieve highly efficient phosphorescence as well as modulate emission energy.
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Affiliation(s)
- Qian Wang
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- China
| | - Hui Xiao
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- China
| | - Yue Wu
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- China
| | - Zhao-Yi Wang
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- China
| | - Da-Sheng Zheng
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- China
| | - Zhong-Ning Chen
- State Key Laboratory of Structural Chemistry
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
- China
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12
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Moon S, Horiuchi S, Sakuda E, Ito A, Arikawa Y, Umakoshi K. Synthesis and photophysical properties of butterfly-shaped dinuclear Pt(II) complex having NHC-based chelate ligands. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.04.045] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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13
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Arnal L, Fuertes S, Martín A, Sicilia V. The Use of Cyclometalated NHCs and Pyrazoles for the Development of Fully Efficient Blue PtII
Emitters and Pt/Ag Clusters. Chemistry 2018; 24:9377-9384. [DOI: 10.1002/chem.201800646] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 05/01/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Lorenzo Arnal
- Departamento de Química Inorgánica, Facultad de Ciencias; Universidad de Zaragoza, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH); Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Sara Fuertes
- Departamento de Química Inorgánica, Facultad de Ciencias; Universidad de Zaragoza, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH); Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Antonio Martín
- Departamento de Química Inorgánica, Facultad de Ciencias; Universidad de Zaragoza, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH); Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Violeta Sicilia
- Departamento de Química Inorgánica, Escuela de Ingeniería y Arquitectura de Zaragoza; Universidad de Zaragoza, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH); Campus Río Ebro, Edificio Torres Quevedo 50018 Zaragoza Spain
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14
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Chakraborty A, Yarnell JE, Sommer RD, Roy S, Castellano FN. Excited-State Processes of Cyclometalated Platinum(II) Charge-Transfer Dimers Bridged by Hydroxypyridines. Inorg Chem 2018; 57:1298-1310. [PMID: 29336558 DOI: 10.1021/acs.inorgchem.7b02736] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of four anti-disposed dinuclear platinum(II) complexes featuring metal-metal-to-ligand charge-transfer (MMLCT) excited states, bridged by either 2-hydroxy-6-methylpyridine or 2-hydroxy-6-phenylpyridine and cyclometalated with 7,8-benzoquinoline or 2-phenylpyridine, are presented. The 2-hydroxypyridine bridging ligands control intramolecular d8-d8 metal-metal σ interactions, affecting the frontier orbitals' electronic structure, resulting in marked changes to the ground- and excited-state properties of these complexes. Three of these molecules possess reversible one-electron oxidations in cyclic voltammetry experiments as a result of strong intramolecular metallophilic interactions. In this series of molecules, X-ray crystallography revealed Pt-Pt distances ranging between 2.815 and 2.878 Å; the former represents the shortest reported metal-metal distance for platinum(II) dimers possessing low-energy MMLCT transitions. All four molecules reported here display visible absorption bands beyond 500 nm and feature MMLCT-based red photoluminescence (PL) above 700 nm at room temperature with high PL quantum yields (up to 4%) and long excited-state lifetimes (up to 341 ns). The latter were recorded using both transient PL and transient absorption experiments that self-consistently yielded quantitatively identical excited-state lifetimes. The energy-gap law was successfully applied to this series of chromophores, documenting this behavior for the first time in molecules possessing MMLCT excited states. The combined data illustrate that entirely new classes of MMLCT chromophores can be envisioned using bridging pyridyl hydroxides in cooperation with various C^N cyclometalates to achieve photophysical properties suitable for excited-state electron- and energy-transfer chemistry.
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Affiliation(s)
- Arnab Chakraborty
- Department of Chemistry, North Carolina State University , Raleigh, North Carolina 27695-8204, United States
| | - James E Yarnell
- Department of Chemistry, North Carolina State University , Raleigh, North Carolina 27695-8204, United States
| | - Roger D Sommer
- Department of Chemistry, North Carolina State University , Raleigh, North Carolina 27695-8204, United States
| | - Subhangi Roy
- Department of Chemistry, North Carolina State University , Raleigh, North Carolina 27695-8204, United States
| | - Felix N Castellano
- Department of Chemistry, North Carolina State University , Raleigh, North Carolina 27695-8204, United States
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15
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Deaton JC, Chakraborty A, Czerwieniec R, Yersin H, Castellano FN. Temperature dependence of photophysical properties of a dinuclear C^N-cyclometalated Pt(ii) complex with an intimate Pt–Pt contact. Zero-field splitting and sub-state decay rates of the lowest triplet. Phys Chem Chem Phys 2018; 20:25096-25104. [DOI: 10.1039/c8cp05213a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
A dinuclear Pt(ii) complexes exhibits an unusually large zero field splitting in its metal–metal-to-ligand charge transfer triplet excited state.
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Affiliation(s)
- Joseph C. Deaton
- Department of Chemistry
- North Carolina State University
- Raleigh
- USA
| | | | - Rafal Czerwieniec
- Institut für Physikalische Chemie
- Universität Regensburg
- D-93040 Regensburg
- Germany
| | - Hartmut Yersin
- Institut für Physikalische Chemie
- Universität Regensburg
- D-93040 Regensburg
- Germany
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16
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Horiuchi S, Moon S, Sakuda E, Ito A, Arikawa Y, Umakoshi K. U- to Z-shape isomerization in a Pt2Ag2 framework containing pyridyl-NHC ligands. Dalton Trans 2018; 47:7113-7117. [DOI: 10.1039/c8dt01047a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A highly twisted U-shaped Pt2Ag2 complex bearing pyridyl–NHC ligands showed isomerization to Z-shaped conformations via an intermolecular process. 1H NMR experiments revealed that the isomerization reached U : Z = 2 : 1 ratio in a thermodynamic equilibrium state.
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Affiliation(s)
- Shinnosuke Horiuchi
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki 852-8521
- Japan
| | - Sangjoon Moon
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki 852-8521
- Japan
| | - Eri Sakuda
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki 852-8521
- Japan
| | - Akitaka Ito
- Graduate School of Engineering/School of Environmental Science and Engineering
- Kochi University of Technology
- Kami
- Japan
| | - Yasuhiro Arikawa
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki 852-8521
- Japan
| | - Keisuke Umakoshi
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki 852-8521
- Japan
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17
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Ueda M, Horiuchi S, Sakuda E, Nakao Y, Arikawa Y, Umakoshi K. Reversible formation and cleavage of Pt→Ag dative bonds in a pre-organized cavity of a luminescent heteropolynuclear platinum(ii) complex. Chem Commun (Camb) 2017; 53:6405-6408. [DOI: 10.1039/c7cc03447d] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A heteropolynuclear complex can reversibly capture an Ag(i) ion and release it from the pre-organized cavity by the concerted formation and cleavage of Pt→Ag dative bonds and Ag–C(ipso) bonds, respectively.
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Affiliation(s)
- Misa Ueda
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki
- Japan
| | - Shinnosuke Horiuchi
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki
- Japan
| | - Eri Sakuda
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki
- Japan
| | - Yoshihide Nakao
- Department of Applied Chemistry and Biochemistry
- Faculty of Engineering
- Kyushu Sangyo University
- Higashi-ku
- Japan
| | - Yasuhiro Arikawa
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki
- Japan
| | - Keisuke Umakoshi
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki
- Japan
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18
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Belyaev A, Dau TM, Jänis J, Grachova EV, Tunik SP, Koshevoy IO. Low-Nuclearity Alkynyl d10 Clusters Supported by Chelating Multidentate Phosphines. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00701] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Andrey Belyaev
- Department
of Chemistry, University of Eastern Finland, Joensuu, 80101, Finland
| | - Thuy Minh Dau
- Department
of Chemistry, University of Eastern Finland, Joensuu, 80101, Finland
| | - Janne Jänis
- Department
of Chemistry, University of Eastern Finland, Joensuu, 80101, Finland
| | - Elena V. Grachova
- St. Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia
| | - Sergey P. Tunik
- St. Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia
| | - Igor O. Koshevoy
- Department
of Chemistry, University of Eastern Finland, Joensuu, 80101, Finland
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19
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Horiuchi S, Tanaka H, Sakuda E, Arikawa Y, Umakoshi K. Encapsulation and Enhanced Luminescence Properties of IrIIIComplexes within a Hexameric Self-Assembled Capsule. Chemistry 2016; 22:17533-17537. [DOI: 10.1002/chem.201604016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Indexed: 01/01/2023]
Affiliation(s)
- Shinnosuke Horiuchi
- Division of Chemistry and Materials Science; Graduate School of Engineering; Nagasaki University, Bunkyo-machi; Nagasaki 852-8521 Japan
| | - Hirotaka Tanaka
- Division of Chemistry and Materials Science; Graduate School of Engineering; Nagasaki University, Bunkyo-machi; Nagasaki 852-8521 Japan
| | - Eri Sakuda
- Division of Chemistry and Materials Science; Graduate School of Engineering; Nagasaki University, Bunkyo-machi; Nagasaki 852-8521 Japan
| | - Yasuhiro Arikawa
- Division of Chemistry and Materials Science; Graduate School of Engineering; Nagasaki University, Bunkyo-machi; Nagasaki 852-8521 Japan
| | - Keisuke Umakoshi
- Division of Chemistry and Materials Science; Graduate School of Engineering; Nagasaki University, Bunkyo-machi; Nagasaki 852-8521 Japan
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20
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Bolotin DS, Novikov AS, Kolesnikov IE, Suslonov VV, Novozhilov Y, Ronzhina O, Dorogov M, Krasavin M, Yu. Kukushkin V. Phosphorescent Platinum(II) Complexes Featuring Chelated Acetoxime Pyrazoles: Synthetic, Structural, and Photophysical Study. ChemistrySelect 2016. [DOI: 10.1002/slct.201600130] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Dmitrii S. Bolotin
- Institute of Chemistry; Saint Petersburg State University; Universitetskaya Nab., 7/9 Saint Petersburg Russian Federation
| | - Alexander S. Novikov
- Institute of Chemistry; Saint Petersburg State University; Universitetskaya Nab., 7/9 Saint Petersburg Russian Federation
| | - Ilya E. Kolesnikov
- Center for Optical and Laser Materials Research; Saint Petersburg State University; Ul'yanovskaya St., 5 Saint Petersburg Russian Federation
| | - Vitaliy V. Suslonov
- Center for X-ray Diffraction Studies; Saint Petersburg State University; Universitetskii Pr., 26 Saint Petersburg Russian Federation
| | - Yuri Novozhilov
- The Ushinsky Yaroslavl State Pedagogical University; Respublikanskaya St., 108 Yaroslavl Russian Federation
| | - Oksana Ronzhina
- The Ushinsky Yaroslavl State Pedagogical University; Respublikanskaya St., 108 Yaroslavl Russian Federation
| | - Mikhail Dorogov
- The Ushinsky Yaroslavl State Pedagogical University; Respublikanskaya St., 108 Yaroslavl Russian Federation
| | - Mikhail Krasavin
- Institute of Chemistry; Saint Petersburg State University; Universitetskaya Nab., 7/9 Saint Petersburg Russian Federation
| | - Vadim Yu. Kukushkin
- Institute of Chemistry; Saint Petersburg State University; Universitetskaya Nab., 7/9 Saint Petersburg Russian Federation
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21
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Nishihara K, Ueda M, Higashitani A, Nakao Y, Arikawa Y, Horiuchi S, Sakuda E, Umakoshi K. Different structural preference of Ag(i) and Au(i) in neutral and cationic luminescent heteropolynuclear platinum(ii) complexes: Z (U)-shaped Pt2M2 type vs. trinuclear PtM2 type. Dalton Trans 2016; 45:4978-82. [DOI: 10.1039/c6dt00320f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The structural preference and photophysical properties of heteropolynuclear Pt(ii) complexes are reported.
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Affiliation(s)
- Kazuki Nishihara
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki 852-8521
- Japan
| | - Misa Ueda
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki 852-8521
- Japan
| | - Ami Higashitani
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki 852-8521
- Japan
| | - Yoshihide Nakao
- Department of Applied Chemistry and Biochemistry
- Faculty of Engineering
- Kyushu Sangyo University
- Fukuoka 813-8503
- Japan
| | - Yasuhiro Arikawa
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki 852-8521
- Japan
| | - Shinnosuke Horiuchi
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki 852-8521
- Japan
| | - Eri Sakuda
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki 852-8521
- Japan
| | - Keisuke Umakoshi
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki 852-8521
- Japan
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22
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Yoshida J, Sugawara K, Yuge H, Okabayashi J. Bis(acetylacetonato)bis(pyrazolato)ruthenate(iii) as a redox-active scorpionate ligand. Dalton Trans 2015; 43:16066-73. [PMID: 25238163 DOI: 10.1039/c4dt02331e] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The potential of a new anionic octahedral metal complex [Ru(III)(acac)2(pz)2](-) ((-)) (pzH = pyrazole) as a ligand with a scorpionate coordination behaviour like tris(pyrazolyl)borate (tp) and reversible redox activity is presented. Trinuclear metal complexes, [Ru(III)2Zn(II)(acac)4(pz)4] () and [Ru(II)Ru(III)2(acac)4(pz)4] (), were each synthesized by the reaction of ZnCl2 or Ru3(CO)12 with [Ru(III)(acac)2(pz)(pzH)] (H) that is in situ deprotonated and acts as a precursor of (-). Single-crystal X-ray diffraction studies clarified that (-) acts as a scorpionate ligand; two (-) units in and one unit in function as bidentate ligands with two pyrazolates as pincers, while another (-) unit in functions as a tridentate ligand with one oxygen atom as a tail in addition to the two pyrazolate pincers. Moreover, and showed reversible multi-stage redox behaviours based on the Ru(II)/Ru(III) and Ru(III)/Ru(IV) couples of the (-) units in the cyclic voltammetry (CV) measurements. Based on the X-ray, IR, and CV measurements and the comparison with other Ru(ii) complexes with tp derivatives, the (-) unit was found to act as a redox-active scorpionate with electron withdrawing properties compared to the tp.
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Affiliation(s)
- Jun Yoshida
- Department of Chemistry, School of Science, Kitasato University, 1-15-1 Kitasato, Minami-ku, Sagamihara, Kanagawa, 252-0329, Japan.
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23
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Kim H, Park M, Lee H, Jung OS. Construction of helical coordination polymers via flexible conformers of bis(3-pyridyl)cyclotetramethylenesilane: metal(ii) and halogen effects on luminescence, thermolysis and catalysis. Dalton Trans 2015; 44:8198-204. [DOI: 10.1039/c5dt00774g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Construction and physicochemical properties of rectangular-tubular-helical coordination polymers of [M(ii)X2L] (M = Zn(ii), Hg(ii); X− = Cl−, Br−) were investigated.
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Affiliation(s)
- Hyeun Kim
- Department of Chemistry
- Pusan National University
- Pusan 609-735
- Korea
| | - Minwoo Park
- Department of Chemistry
- Pusan National University
- Pusan 609-735
- Korea
| | - Haeri Lee
- Department of Chemistry
- Pusan National University
- Pusan 609-735
- Korea
| | - Ok-Sang Jung
- Department of Chemistry
- Pusan National University
- Pusan 609-735
- Korea
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24
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Tanaka T, Nouchi R, Nakao Y, Arikawa Y, Umakoshi K. Highly luminescent imidoylamidinato platinum(ii) complexes formed by the coupling of 1H-pyrazole-1-carboxamidine with nitriles used as reaction solvents. RSC Adv 2014. [DOI: 10.1039/c4ra11744a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
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25
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Moon SY, Kim E, Noh TH, Lee YA, Jung OS. Triple-meso helices as alcohol reservoirs and discriminators: structural properties and thermal behaviors of silver(i) coordination molecular braids containing diethylbis(4-pyridyl)silanes. Dalton Trans 2013; 42:13974-80. [DOI: 10.1039/c3dt51398j] [Citation(s) in RCA: 9] [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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