1
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Hashemzadeh T, Christofferson AJ, White KF, Barnard PJ. Experimental and theoretical studies of pH-responsive iridium(III) complexes of azole and N-heterocyclic carbene ligands. Dalton Trans 2024; 53:8478-8493. [PMID: 38687288 DOI: 10.1039/d3dt03766e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
A series of nine luminescent iridium(III) complexes with pH-responsive imidazole and benzimidazole ligands have been prepared and characterized. The first series of complexes were of the form [Ir(ppy)2(N^N)]+ or [Ir(ppy)2(C^N)]+ (where ppy is 2-phenylpyridine and N^N is 2-(2-pyridyl)imidazole or 2-(2-pyridyl)benzimidazole and C^N represents a pyridyl-triazolylidene-based N-heterocyclic carbene ligand). For these complexes, the benzimidazole group was either unsubstituted or substituted with electron-withdrawing (Cl) or electron-donating (Me) groups. The second series of complexes were of the form [Ir(phbim)2(N^N)]+ or [Ir(phbim)2(C^N)]+ (where phbim is 2-phenylbenzimidazole and N^N is either 2,2'-bipyridine or 1,10-phenanthroline and C^N is either a pyridyl-imidazolylidene or pyridyl-triazolylidene N-heterocyclic carbene ligand). UV-visible and photoluminescence pH titration studies showed that changing the protonation state of these complexes results in significant changes in the photoluminescence emission properties. The pKa values of prepared complexes were estimated from the spectroscopic pH titration data and these values show that the nature of the pH-sensitive ligands (either main or ancillary ligands) resulted in a significant capacity to modulate the pKa values for these compounds with values ranging from 5.19-11.22. Theoretical investigations into the nature of the electronic transitions for the different protonation states of compounds were performed and the results were consistent with the experimental results.
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Affiliation(s)
- Tahmineh Hashemzadeh
- Department of Biochemistry and Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Victoria, 3086, Australia.
| | - Andrew J Christofferson
- School of Science, STEM College, RMIT University, Melbourne, Victoria 3001, Australia
- ARC Centre of Excellence in Exciton Science, School of Science, RMIT University, Melbourne, Victoria 3001, Australia
| | - Keith F White
- Department of Biochemistry and Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Victoria, 3086, Australia.
| | - Peter J Barnard
- Department of Biochemistry and Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Victoria, 3086, Australia.
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2
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Sun L, Wang Y, Zhao Y, Qiu Y. A theoretical study on the second-order nonlinear optical properties of Pt(II) bis-acetylide complexes: substituent and redox effects. Phys Chem Chem Phys 2024; 26:6862-6871. [PMID: 38329283 DOI: 10.1039/d3cp04418a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Density functional theory studies on the geometric and electronic structures, UV-vis absorption spectra, and second-order nonlinear optical (NLO) properties of four-coordinate Pt(II) bis-acetylide complexes, cis-[Pt(CNtBu)(ADC)(CCR)2] , have been employed. The effects of ligand variation and the single electron redox process on the structures and NLO response of complexes have also been investigated. It shows that the variations of the ligand and electron have little effect on the geometries of the complexes, but there is a significant effect on their electronic structures and NLO responses. The introduction of a single -NO2 group in acetylide ligands increases the first hyperpolarizability of complex 12 times, while one electron lost in five complexes enhances the first hyperpolarizability 496 times at the most. Both methods are considered effective ways for improving the NLO response of Pt(II) bis-acetylide complexes. Based on the analysis of the electronic and optical properties of fifteen studied complexes, the increase of NLO response is mainly ascribed to strong oscillator strengths, lower electron transition energy, and well-directed effective charge transfer. This work reveals some underlying relationships between the NLO responses and electronic structures of complexes, which is helpful for the design and synthesis of high-performance NLO materials of Pt(II) bis-acetylide complexes.
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Affiliation(s)
- Liting Sun
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun, 130024, China.
| | - Yingying Wang
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun, 130024, China.
| | - Yuanyuan Zhao
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun, 130024, China.
| | - Yongqing Qiu
- Institute of Functional Material Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun, 130024, China.
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3
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Zheng XK, Zhao FQ, Yin MN, Qian C, Bi SH, Tao P, Miao YQ, Liu SJ, Zhao Q. New trifluoromethyl modified iridium(III) complex for high-efficiency sky-blue phosphorescent organic light-emitting diode. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153181] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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4
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Wang YY, Tong KN, Zhang K, Lu CH, Chen X, Liang JX, Wang CK, Wu CC, Fung MK, Fan J. Positive impact of chromophore flexibility on the efficiency of red thermally activated delayed fluorescence materials. MATERIALS HORIZONS 2021; 8:1297-1303. [PMID: 34821922 DOI: 10.1039/d1mh00028d] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Rigid electron donors (D) and acceptors (A) have been widely used in recent years for the construction of D-A type thermally activated delayed fluorescence (TADF) materials. However, the chromophore robustness does not always make a positive contribution to the high efficiency of TADF materials. Here, the comparison study of two D-A type red TADF compounds (PT-TPA and PT-Az) demonstrated, for the first time, the positive impact of chromophore flexibility on the efficiency of TADF materials. In PT-Az, the rotation of terminal phenyl groups is restrained by an ethylene linker, leading to its inferior photoluminescence quantum yield (PLQY). In contrast, PT-TPA with free rotation of the phenyl groups showed a low reorganization energy and a large transition dipole moment for the S1→ S0 transition, which resulted in a high fluorescence radiative decay rate. As a result, the optimized devices based on PT-TPA gave a maximum external quantum efficiency (EQE) of 29.7% (632 nm) when doped in a single host and an EQE of 28.8% (648 nm) in an exciplex host. This study provided an insight into the impact of chromophore flexibility on the photophysical properties and device efficiency of TADF materials, and these results may provide valuable guidance for the molecular design of efficient emitters.
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Affiliation(s)
- Yuan-Yuan Wang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, Jiangsu 215123, China.
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5
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Al-Busaidi IJ, Ilmi R, Dutra JDL, Oliveira WF, Haque A, Al Rasbi NK, Marken F, Raithby PR, Khan MS. Utilization of a Pt(ii) di-yne chromophore incorporating a 2,2'-bipyridine-5,5'-diyl spacer as a chelate to synthesize a green and red emitting d-f-d heterotrinuclear complex. Dalton Trans 2021; 50:1465-1477. [PMID: 33439190 DOI: 10.1039/d0dt04198j] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new heterotrinuclear (d-f-d) complex [Eu(btfa)31c] (btfa = 4,4,4-trifluoro-1-phenyl-1,3-butanedione and 1c = [(Ph)(Et3P)2Pt-C[triple bond, length as m-dash]C-R-C[triple bond, length as m-dash]C-Pt(Et3P)2(Ph)] (R = 2,2'-bipyridine-5,5'-diyl) has been synthesized by utilizing the N,N-donor sites of the organometallic chromophore. The complex was characterized by analytical and spectroscopic methods. Photophysical properties of the complex were analysed in detail using both steady-state and time-resolved emission and excitation spectroscopy. The optical absorption spectrum of the complex is dominated by the spin allowed π-π* transitions of the btfa and 1c units in the UV-visible region (200-418 nm) and thus is excitable over a wide range of wavelengths across the UV into the visible region of the electromagnetic spectrum. The complex displays typical red Eu(iii) emission when excited at 345 nm. However, it also shows green emission when excited at 464 nm and, thus could be an interesting candidate for full colour display applications. The change in the colour could be a result of the high value of the energy back-transfer rate (6.73 × 105 s-1) from the triplet state of the organometallic chromophore to the 5D1 state of Eu(iii). Judd-Ofelt (J-O) intensity parameters (Ω2 and Ω4), radiative (AR), non-radiative (AR) decay rates and intrinsic quantum yield (Q) have been calculated.
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Affiliation(s)
| | - Rashid Ilmi
- Department of Chemistry, Sultan Qaboos University, P.O. Box 36, Al Khoud 123, Oman.
| | - José D L Dutra
- Pople Computational Chemistry Laboratory, Department of Chemistry, UFS, 49100-000 São Cristóvão, Sergipe, Brazil
| | - Willyan F Oliveira
- Pople Computational Chemistry Laboratory, Department of Chemistry, UFS, 49100-000 São Cristóvão, Sergipe, Brazil
| | - Ashanul Haque
- Department of Chemistry, Sultan Qaboos University, P.O. Box 36, Al Khoud 123, Oman. and Department of Chemistry, College of Science, University of Hail, Ha'il 81451, Kingdom of Saudi Arabia
| | - Nawal K Al Rasbi
- Department of Chemistry, Sultan Qaboos University, P.O. Box 36, Al Khoud 123, Oman.
| | - Frank Marken
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK.
| | - Paul R Raithby
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK.
| | - Muhammad S Khan
- Department of Chemistry, Sultan Qaboos University, P.O. Box 36, Al Khoud 123, Oman.
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6
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Binuclear organometallic Pt(II) complexes as stabilizing ligands for gold and silver metal nanoparticles. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120170] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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7
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Choi J, Ahn M, Lee JH, Ahn DS, Ki H, Oh I, Ahn CW, Choi EH, Lee Y, Lee S, Kim J, Cho DW, Wee KR, Ihee H. Ultrafast excited state relaxation dynamics in a heteroleptic Ir( iii) complex, fac-Ir(ppy) 2(ppz), revealed by femtosecond X-ray transient absorption spectroscopy. Inorg Chem Front 2021. [DOI: 10.1039/d0qi01510e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The experimental and calculation results demonstrate that the 3MLppzCT state generated by the spin-forbidden transition rapidly relaxes to 3MLppyCT through internal conversion process with a time constant of ∼450 fs.
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Huang TH, Wu TC, Zhao FZ, Zheng D, Luo C, Liang GM, Zhao B. Structures, electronic and luminescent properties of Cu(I)-quinoline complex at different temperatures and its application to red light-emitting diode. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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9
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A highly sensitive ‘turn-on’ phosphorescence probe based on iridium(III) complex with polyether segment subunits for rapid detection of thiophenol. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121551] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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10
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Masai H, Yokoyama T, Miyagishi HV, Liu M, Tachibana Y, Fujihara T, Tsuji Y, Terao J. Insulated conjugated bimetallopolymer with sigmoidal response by dual self-controlling system as a biomimetic material. Nat Commun 2020; 11:408. [PMID: 31964865 PMCID: PMC6972936 DOI: 10.1038/s41467-019-14271-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 12/27/2019] [Indexed: 12/13/2022] Open
Abstract
Biological systems are known to spontaneously adjust the functioning of neurotransmitters, ion channels, and the immune system, being promoted or regulated through allosteric effects or inhibitors, affording non-linear responses to external stimuli. Here we report that an insulated conjugated bimetallopolymer, in which Ru(II) and Pt(II) complexes are mutually connected with insulated conjugations, exhibits phosphorescence in response to CO gas. The net profile corresponds to a sigmoidal response with a dual self-controlling system, where drastic changes were exhibited at two threshold concentrations. The first threshold for activation of the system is triggered by the depolymerization of the non-radiative conjugated polymer to luminescent monomers, while the second one for regulation is triggered by the switch in the rate-determining step of the Ru complex. Such a molecular design with cooperative multiple transition metals would provide routes for the development of higher-ordered artificial molecular systems bearing bioinspired responses with autonomous modulation.
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Affiliation(s)
- Hiroshi Masai
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, 153-8902, Japan
| | - Takuya Yokoyama
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510, Japan
| | - Hiromichi V Miyagishi
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, 153-8902, Japan
| | - Maning Liu
- School of Engineering, RMIT University, Bundoora, Victoria, 3083, Australia
| | - Yasuhiro Tachibana
- School of Engineering, RMIT University, Bundoora, Victoria, 3083, Australia
| | - Tetsuaki Fujihara
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510, Japan
| | - Yasushi Tsuji
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510, Japan
| | - Jun Terao
- Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, 153-8902, Japan.
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11
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Xu J, Meng B, Liu J, Wang L. A high molecular weight organometallic conjugated polymer incorporated with Hg( ii). Chem Commun (Camb) 2020; 56:5701-5704. [DOI: 10.1039/d0cc02530e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
An organometallic conjugated polymer incorporated with Hg(ii) has an ultrahigh molecular weight and exhibits good mechanical properties.
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Affiliation(s)
- Jin Xu
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- People's Republic of China
| | - Bin Meng
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- People's Republic of China
| | - Jun Liu
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- People's Republic of China
| | - Lixiang Wang
- State Key Laboratory of Polymer Physics and Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022
- People's Republic of China
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12
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Dhindsa JS, Melenbacher A, Barbon SM, Stillman MJ, Gilroy JB. Altering the optoelectronic properties of boron difluoride formazanate dyes via conjugation with platinum(ii)-acetylides. Dalton Trans 2020; 49:16133-16142. [DOI: 10.1039/c9dt03417j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The absorption, emission, and electrochemical properties of conjugates of boron difluoride formazanate dyes and Pt(ii)-acetylides are systematically studied.
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Affiliation(s)
- Jasveer S. Dhindsa
- Department of Chemistry
- The University of Western Ontario
- London
- Canada
- The Centre for Advanced Materials and Biomaterials Research (CAMBR)
| | - Adyn Melenbacher
- Department of Chemistry
- The University of Western Ontario
- London
- Canada
| | - Stephanie M. Barbon
- Department of Chemistry
- The University of Western Ontario
- London
- Canada
- The Centre for Advanced Materials and Biomaterials Research (CAMBR)
| | | | - Joe B. Gilroy
- Department of Chemistry
- The University of Western Ontario
- London
- Canada
- The Centre for Advanced Materials and Biomaterials Research (CAMBR)
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13
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Cyclometalated Iridium (III) complexes: Recent advances in phosphorescence bioimaging and sensing applications. Appl Organomet Chem 2019. [DOI: 10.1002/aoc.5413] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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14
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Liu C, Li D, Xing G, Chen L, Lin M, Ling Q. Synthesis and Properties of Main-Chain Phosphorescent Polymer with Iridium Complex. RUSS J GEN CHEM+ 2019. [DOI: 10.1134/s1070363219120284] [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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15
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Wong WY, Li L, Wang L. Synthesis and characterization of platinum(II) polymetallaynes functionalized with phenoxazine-based spacer. A comparison with the phenothiazine congener. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.06.035] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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Juvenal F, Lei H, Karsenti PL, Harvey PD. Drastic effect of the substituent on the anthraquinone diimine moiety on the properties of the push-pull trans-bisphosphinebisphenylacetynylplatinum(II)-containing polymers. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.05.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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17
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Tian Z, Yang X, Liu B, Zhong D, Zhou G. Photophysical properties and optical power limiting ability of Pt(II) polyynes bearing fluorene-type ligands with ethynyl units at different positions. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.05.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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18
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Natoli SN, Zeller M, Ren T. A Family of Cross-Conjugated Polyenynes Capped by CoIII(cyclam): Syntheses, Molecular and Electronic Structures. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00313] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sean N. Natoli
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Matthias Zeller
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Tong Ren
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
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19
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Lisa G, Yoshitake Y, Michinobu T. Elucidating the thermal degradation of carbazole‐containing platinum–polyyne polymers. J Appl Polym Sci 2019. [DOI: 10.1002/app.47639] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Gabriela Lisa
- Department of Chemical Engineering, Cristofor Simionescu Faculty of Chemical Engineering and Environmental ProtectionGheorghe Asachi Technical University of Iasi 73 Professor Doctor Docent Dimitrie Mangeron Street, Iasi 700050 Romania
| | - Yoko Yoshitake
- Department of Materials Science and EngineeringTokyo Institute of Technology 2‐12‐1 Ookayama, Meguro‐Ku Tokyo 152‐8552 Japan
| | - Tsuyoshi Michinobu
- Department of Materials Science and EngineeringTokyo Institute of Technology 2‐12‐1 Ookayama, Meguro‐Ku Tokyo 152‐8552 Japan
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20
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Ilmi R, Kansız S, Dege N, Khan MS. Synthesis, structure, Hirshfeld surface analysis and photophysical studies of red emitting europium acetylacetonate complex incorporating a phenanthroline derivative. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.03.036] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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21
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Feng Z, Gao Z, Qu W, Yang T, Li J, Wang L. Rational design of quinoxaline-based bipolar host materials for highly efficient red phosphorescent organic light-emitting diodes. RSC Adv 2019; 9:10789-10795. [PMID: 35515308 PMCID: PMC9062477 DOI: 10.1039/c9ra01149h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 03/26/2019] [Indexed: 11/21/2022] Open
Abstract
Two novel bipolar carbazole/diphenylquinoxaline-based host materials 3-(2,3-diphenylquinoxalin-6-yl)-9-phenyl-9H-carbazole (M1) and 3-(4-(2,3-diphenylquinoxalin-6-yl)phenyl)-9-phenyl-9H-carbazole (M2) have been rationally designed and synthesized. The phenyl spacer between the functionalized quinoxaline moiety and the carbazole moiety is also introduced to investigate its influence on their photophysical properties. The chemical structures, and thermal, photophysical and electrochemical properties of the two host materials were characterized and explored in detail. Red phosphorescent light-emitting diodes with M1 and M2 as hosts were prepared to explore their electroluminescent properties. Both M1 and M2 host-based red devices exhibit outstanding electroluminescent performance. For example, two red devices all realize good red emission with the maximum at 594 nm, the maximum external quantum efficiency and luminance can reach 14.66% and 28 619 cd m-2 for M1-based devices and 15.07% and 28 818 cd m-2 for M2-based devices, indicating compounds M1 and M2 designed in this work have potential applications in the development of high-performance monochrome and white OLEDs.
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Affiliation(s)
- Zilong Feng
- School of Architecture, Tianjin University Tianjin 300072 PR China
| | - Zhixiang Gao
- School of Architecture, Tianjin University Tianjin 300072 PR China .,Shanxi Province Key Laboratory of Microstructure Functional Materials, Institute of Solid State Physics, Shanxi Datong University Datong 037009 P. R. China
| | - Wenshan Qu
- Shanxi Province Key Laboratory of Microstructure Functional Materials, Institute of Solid State Physics, Shanxi Datong University Datong 037009 P. R. China
| | - Tingting Yang
- Shanxi Province Key Laboratory of Microstructure Functional Materials, Institute of Solid State Physics, Shanxi Datong University Datong 037009 P. R. China
| | - Jiangang Li
- Shanxi Province Key Laboratory of Microstructure Functional Materials, Institute of Solid State Physics, Shanxi Datong University Datong 037009 P. R. China
| | - Lixiong Wang
- School of Architecture, Tianjin University Tianjin 300072 PR China
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22
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Ahmed MK, Rahman MM, Naher M, Mehdi SS, Khan AR, Khan MMR, Islam SMS, Younus M, Wedler S, Bagnich S, Hofmann A, Rudnick A, Köhler A. A New Series of Conjugated Platinum‐
co
‐Poly(
p
‐phenylenebutadiynylene)s Polymers: Syntheses and Photophysical Properties. MACROMOL CHEM PHYS 2019. [DOI: 10.1002/macp.201800494] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Md. Kausar Ahmed
- Department of ChemistryShahjalal University of Science and Technology Sylhet ‐3114 Bangladesh
| | - Md. Mostafizur Rahman
- Department of ChemistryShahjalal University of Science and Technology Sylhet ‐3114 Bangladesh
| | - Masnun Naher
- Department of ChemistryShahjalal University of Science and Technology Sylhet ‐3114 Bangladesh
| | - Shawon Shawrier Mehdi
- Department of ChemistryShahjalal University of Science and Technology Sylhet ‐3114 Bangladesh
| | - Atiqur Rahman Khan
- Department of ChemistryShahjalal University of Science and Technology Sylhet ‐3114 Bangladesh
| | | | - S. M. Saiful Islam
- Department of ChemistryShahjalal University of Science and Technology Sylhet ‐3114 Bangladesh
| | - Muhammad Younus
- Department of ChemistryShahjalal University of Science and Technology Sylhet ‐3114 Bangladesh
| | - Stefan Wedler
- Soft Matter Optoelectronics and Bayreuth Institute of Macromolecular ResearchUniversity of Bayreuth Universitätsstr. 30 95440 Bayreuth Germany
| | - Sergey Bagnich
- Soft Matter Optoelectronics and Bayreuth Institute of Macromolecular ResearchUniversity of Bayreuth Universitätsstr. 30 95440 Bayreuth Germany
| | - Anna‐Lena Hofmann
- Soft Matter Optoelectronics and Bayreuth Institute of Macromolecular ResearchUniversity of Bayreuth Universitätsstr. 30 95440 Bayreuth Germany
| | - Alexander Rudnick
- Soft Matter Optoelectronics and Bayreuth Institute of Macromolecular ResearchUniversity of Bayreuth Universitätsstr. 30 95440 Bayreuth Germany
| | - Anna Köhler
- Soft Matter Optoelectronics and Bayreuth Institute of Macromolecular ResearchUniversity of Bayreuth Universitätsstr. 30 95440 Bayreuth Germany
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23
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Photoluminescence of platinum(II) diethynylphenanthroline organometallic complexes with bis-arylethynyl derivatives in solution and solid state. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2018.10.032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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24
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Yin XY, Yang ZY, Huang GL, Bian JJ, Wang DQ, Wang Q, Teng MY, Wang ZL, Zhang J. Synthesis and properties of a series of iridium complexes with imidazolo[2,1-b]thiazole derivatives as primary ligands. NEW J CHEM 2019. [DOI: 10.1039/c8nj06295a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Ten novel phosphorescent iridium complexes based on imidazolo[2,1-b]thiazole derivatives as primary ligands with luminescent nearly full colors.
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Affiliation(s)
- Xin-ying Yin
- Faculty of Chemistry and Chemical Engineering
- Yunnan Normal University
- Kunming 650500
- China
| | - Zhi-yu Yang
- School of Chemistry & Environment
- Yunnan Minzu University
- Kunming
- China
| | - Guo-li Huang
- Faculty of Chemistry and Chemical Engineering
- Yunnan Normal University
- Kunming 650500
- China
| | - Jian-jian Bian
- Faculty of Chemistry and Chemical Engineering
- Yunnan Normal University
- Kunming 650500
- China
| | - Deng-qiang Wang
- Faculty of Chemistry and Chemical Engineering
- Yunnan Normal University
- Kunming 650500
- China
| | - Qin Wang
- Faculty of Chemistry and Chemical Engineering
- Yunnan Normal University
- Kunming 650500
- China
| | - Ming-yu Teng
- Faculty of Chemistry and Chemical Engineering
- Yunnan Normal University
- Kunming 650500
- China
| | - Zheng-liang Wang
- School of Chemistry & Environment
- Yunnan Minzu University
- Kunming
- China
| | - Jie Zhang
- School of Pharmaceutical and Chemical Engineering
- Taizhou University
- Taizhou 318000
- China
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25
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Zhang Y, Wang H, Ye J, Qiu Y. Redox-triggered switch based on platinum(ii) acetylacetonate complexes bearing an isomeric donor–acceptor conjugation ligand shows a high second-order nonlinear optical response. NEW J CHEM 2019. [DOI: 10.1039/c9nj02183c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Pt(ii) acetylcetonate complexes with an isomeric D–A ligand exhibiting exceptionally large hyperpolarizabilities are promising redox-triggered NLO switches.
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Affiliation(s)
- Yuan Zhang
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun
- China
| | - Hongqiang Wang
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun
- China
| | - Jinting Ye
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun
- China
| | - Yongqing Qiu
- Institute of Functional Material Chemistry
- Faculty of Chemistry
- Northeast Normal University
- Changchun
- China
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26
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Synthesis, photo- and electro-luminescence of dinuclear Ir(III) complexes containing bis-β-diketonate carbazole ligand. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.09.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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27
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Zhou YH, Jiang D, Zheng YX. Orange red iridium complexes with good electron mobility and mild OLED efficiency roll-off. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.09.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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28
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Photoluminescence and electroluminescence of four orange-red and red organic iridium(III) complexes. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.09.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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29
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Cui Z, Ye S, Wang L, Guo H, Obolda A, Dong S, Chen Y, Ai X, Abdurahman A, Zhang M, Wang L, Li F. Radical-Based Organic Light-Emitting Diodes with Maximum External Quantum Efficiency of 10.6. J Phys Chem Lett 2018; 9:6644-6648. [PMID: 30398056 DOI: 10.1021/acs.jpclett.8b03019] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A new luminescent radical, tris-2,4,6-trichlorophenylmethyl-1,5-diazarcarbazole (TTM-DACz), was synthesized and characterized. The photoluminescence quantum yield of TTM-DACz in solid 1,3,5-tris(1-phenyl-1H-benzimidazol-2-yl)benzene matrix film (5 wt %) is as high as 57.0%. Organic light-emitting diodes (OLEDs) employing TTM-DACz as the emitter were fabricated. By rational design of the device structure and host-guest doping system, external quantum efficiency (EQE) of up to 10.6% of the optimized device with a red CIE chromaticity of (0.62, 0.36) was obtained, which is among the highest values for red OLEDs using nonphosphorescent materials as the emitters. This work will accelerate the development of luminescent radical materials for high-performance OLEDs.
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Affiliation(s)
- Zhiyuan Cui
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry , Jilin University , Qianjin Avenue 2699 , Changchun 130012 , P.R. China
| | - Shaofeng Ye
- Wuhan National Laboratory for Optoelectronics , Huazhong University of Science and Technology , Wuhan 430074 , P.R. China
| | - Lu Wang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry , Jilin University , Qianjin Avenue 2699 , Changchun 130012 , P.R. China
| | - Haoqing Guo
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry , Jilin University , Qianjin Avenue 2699 , Changchun 130012 , P.R. China
| | - Ablikim Obolda
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry , Jilin University , Qianjin Avenue 2699 , Changchun 130012 , P.R. China
| | - Shengzhi Dong
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry , Jilin University , Qianjin Avenue 2699 , Changchun 130012 , P.R. China
| | - Yingxin Chen
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry , Jilin University , Qianjin Avenue 2699 , Changchun 130012 , P.R. China
| | - Xin Ai
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry , Jilin University , Qianjin Avenue 2699 , Changchun 130012 , P.R. China
| | - Alim Abdurahman
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry , Jilin University , Qianjin Avenue 2699 , Changchun 130012 , P.R. China
| | - Ming Zhang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry , Jilin University , Qianjin Avenue 2699 , Changchun 130012 , P.R. China
| | - Lei Wang
- Wuhan National Laboratory for Optoelectronics , Huazhong University of Science and Technology , Wuhan 430074 , P.R. China
| | - Feng Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry , Jilin University , Qianjin Avenue 2699 , Changchun 130012 , P.R. China
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30
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Li TY, Wu J, Wu ZG, Zheng YX, Zuo JL, Pan Y. Rational design of phosphorescent iridium(III) complexes for emission color tunability and their applications in OLEDs. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.06.014] [Citation(s) in RCA: 163] [Impact Index Per Article: 27.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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31
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Lei H, Juvenal F, Karsenti PL, Fortin D, Harvey PD. Cross Conjugated Organometallic Polymers Exhibiting Ultrafast Excitation Energy Channeling: Drastic Effect of the Connectivity. MACROMOL CHEM PHYS 2018. [DOI: 10.1002/macp.201800354] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hu Lei
- Département de chimie; Université de Sherbrooke; Sherbrooke PQ, J1K 2R1 Canada
| | - Frank Juvenal
- Département de chimie; Université de Sherbrooke; Sherbrooke PQ, J1K 2R1 Canada
| | | | - Daniel Fortin
- Département de chimie; Université de Sherbrooke; Sherbrooke PQ, J1K 2R1 Canada
| | - Pierre D. Harvey
- Département de chimie; Université de Sherbrooke; Sherbrooke PQ, J1K 2R1 Canada
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32
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Tao P, Miao Y, Wang H, Xu B, Zhao Q. High-Performance Organic Electroluminescence: Design from Organic Light-Emitting Materials to Devices. CHEM REC 2018; 19:1531-1561. [PMID: 30358067 DOI: 10.1002/tcr.201800139] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Accepted: 10/02/2018] [Indexed: 12/24/2022]
Abstract
Organic electroluminescence is considered as the most competitive alternative for the future solid-state displays and lighting techniques owing to many advantages such as self-luminescence, high efficiency, high contrast, high color rendering index, ultra-thin thickness, transparency, flat and flexibility, etc. The development of high-performance organic electroluminescence has become the continuing focus of research. In this personal account, a brief overview of representative achievements in our study on the design of highly efficient novel organic light-emitting materials (including fluorescent materials, phosphorescent iridium(III) complexes and conjugated polymers bearing phosphorescent iridium(III) complex) and high-performance device structures together with working principles are given. At last, we will give some perspectives on this fascinating field, and also try to provide some potential directions of research on the basis of the current stage of organic electroluminescence.
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Affiliation(s)
- Peng Tao
- Key Laboratory of Interface Science and Engineering in Advanced Materials of Ministry of Education and Research Center of Advanced Materials Science and Technology, Taiyuan University of Technology, No. 79, Yingze West Street, Taiyuan, 030024, P.R. China.,Key Laboratory for Organic Electronics and Information Displays and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications (NUPT), No. 9, Wenyuan Road, Nanjing, 210023, P.R. China
| | - Yanqin Miao
- Key Laboratory of Interface Science and Engineering in Advanced Materials of Ministry of Education and Research Center of Advanced Materials Science and Technology, Taiyuan University of Technology, No. 79, Yingze West Street, Taiyuan, 030024, P.R. China
| | - Hua Wang
- Key Laboratory of Interface Science and Engineering in Advanced Materials of Ministry of Education and Research Center of Advanced Materials Science and Technology, Taiyuan University of Technology, No. 79, Yingze West Street, Taiyuan, 030024, P.R. China
| | - Bingshe Xu
- Key Laboratory of Interface Science and Engineering in Advanced Materials of Ministry of Education and Research Center of Advanced Materials Science and Technology, Taiyuan University of Technology, No. 79, Yingze West Street, Taiyuan, 030024, P.R. China
| | - Qiang Zhao
- Key Laboratory for Organic Electronics and Information Displays and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications (NUPT), No. 9, Wenyuan Road, Nanjing, 210023, P.R. China
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33
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Bizzarri C, Spuling E, Knoll DM, Volz D, Bräse S. Sustainable metal complexes for organic light-emitting diodes (OLEDs). Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2017.09.011] [Citation(s) in RCA: 210] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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34
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35
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36
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Gao L, Tao P, Miao Y, Jia W, Zhao Y, Wang H, Xu B. Sky-blue phosphorescent organic light-emitting diode with superior performance based on novel chlorine functionalized iridium(III) complex. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.04.053] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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37
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Langecker J, Karg O, Meusinger R, Rehahn M. The synthesis of brominated heteroleptic tris -cyclometallated Ir(III)-complexes as photoactive building blocks on polyaryl backbones. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.02.032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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38
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Tsukamoto T, Aoki R, Sakamoto R, Toyoda R, Shimada M, Hattori Y, Asaoka M, Kitagawa Y, Nishibori E, Nakano M, Nishihara H. A simple zinc(ii) complex that features multi-functional luminochromism induced by reversible ligand dissociation. Chem Commun (Camb) 2018; 53:3657-3660. [PMID: 28144656 DOI: 10.1039/c6cc10190a] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The authors create a zinc(ii) complex featuring a simple chemical structure but multi-functional luminochromism. Reversible dissociation/association between the zinc center and the terpyridine ligand plays a key role in the multi-functional luminochromism.
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Affiliation(s)
- Takamasa Tsukamoto
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
| | - Risa Aoki
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
| | - Ryota Sakamoto
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan. and JST-PRESTO, 4-1-8, Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Ryojun Toyoda
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
| | - Masaki Shimada
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
| | - Yohei Hattori
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
| | - Mizuki Asaoka
- Division of Chemical Engineering, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3, Machikaneyama, Toyonaka, Osaka 560-8531, Japan
| | - Yasutaka Kitagawa
- Division of Chemical Engineering, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3, Machikaneyama, Toyonaka, Osaka 560-8531, Japan
| | - Eiji Nishibori
- Division of Physics, Faculty of Pure and Applied Science, Tsukuba Research Center for Interdisciplinary Materials Science (TIMS), and Center for Integrated Research in Fundamental Science and Engineering (CiRfSE), University of Tsukuba, 1-1-1, Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Masayoshi Nakano
- Division of Chemical Engineering, Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 1-3, Machikaneyama, Toyonaka, Osaka 560-8531, Japan
| | - Hiroshi Nishihara
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
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39
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Islam SN, Sil A, Patra SK. Achieving yellow emission by varying the donor/acceptor units in rod-shaped fluorenyl-alkynyl based π-conjugated oligomers and their binuclear gold(i) alkynyl complexes. Dalton Trans 2018; 46:5918-5929. [PMID: 28406507 DOI: 10.1039/c7dt00895c] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fluorenyl-alkynyl based π-conjugated rod-shaped oligomers bearing different central aromatic moieties and functionalizable di-alkynyl termini, such as H-[triple bond, length as m-dash]-Fl-[triple bond, length as m-dash]-Fl-[triple bond, length as m-dash]-Fl-[triple bond, length as m-dash]-H (OH1), H-[triple bond, length as m-dash]-Fl-[triple bond, length as m-dash]-Btz-[triple bond, length as m-dash]-Fl-[triple bond, length as m-dash]-H (OH2) and H-[triple bond, length as m-dash]-Fl-[triple bond, length as m-dash]-Btd-[triple bond, length as m-dash]-Fl-[triple bond, length as m-dash]-H (OH3) where Fl = 9,9-dioctylfluorene, Btz = N-hexylbenzotriazole, and Btd = benzothiadiazole, were successfully synthesized by a Pd(0) catalyzed Stille coupling protocol. Electron withdrawing benzothiadiazole and benzotriazole as strong to moderate acceptors and fluorene as the donor have been incorporated to adjust the Donor-Acceptor (D-A) strength for fine-tuning the bandgap (Eg) as well as the emission wavelength. The corresponding digold(i) σ-complexes (PPh3)Au-[triple bond, length as m-dash]-Fl-[triple bond, length as m-dash]-Fl-[triple bond, length as m-dash]-Fl-[triple bond, length as m-dash]-Au(PPh3) (OM1), (PPh3)Au-[triple bond, length as m-dash]-Fl-[triple bond, length as m-dash]-Btz-[triple bond, length as m-dash]-Fl-[triple bond, length as m-dash]-Au(PPh3) (OM2) and (PPh3)Au-[triple bond, length as m-dash]-Fl-[triple bond, length as m-dash]-Btd-[triple bond, length as m-dash]-Fl-[triple bond, length as m-dash]-Au(PPh3) (OM3) have also been prepared by a reaction of Au(PPh3)Cl and methanolic NaOMe in DCM with the corresponding alkynyl functionalized oligomers to take advantage of the heavy-atom effect on their emissive properties. The synthesized rod-shaped π-conjugated fluorene based oligomers and their binuclear Au(i) σ-complexes have been unambiguously characterized by various spectroscopic tools such as FTIR and multinuclear NMR as well as MALDI-TOF and CHN analyses. The absorption and emission spectral studies exhibited a progressive red shift with increasing the electron withdrawing character of the central aromatic unit. The rod-like oligomers having alkynyl termini and the corresponding digold(i) complexes are found to be blue, cyan and yellow emissive, demonstrating the fine-tuning of the emission wavelength. Most importantly, the fluorene based π-conjugated yellow light emitters OH3 and OM3 are successfully achieved by varying the donor/acceptor moiety to the fluorenyl-alkynyl backbone. The digold(i) diacetylide organometallic wires exhibit phosphorescence at 77 K in degassed CH2Cl2 due to the efficient intersystem crossing from the S1 to the T1 excited state as induced by heavy atoms.
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Affiliation(s)
- Sk Najmul Islam
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721302, WB, India.
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40
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Liu XY, Tang X, Zhao Y, Zhao D, Fan J, Liao LS. Dispiro and Propellane: Novel Molecular Platforms for Highly Efficient Organic Light-Emitting Diodes. ACS APPLIED MATERIALS & INTERFACES 2018; 10:1925-1932. [PMID: 29271187 DOI: 10.1021/acsami.7b15645] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The incorporation of spatially oriented aromatic motifs in rigid molecular platforms is of great interest for the design of organic electronic materials. These structures can create unusual packing patterns and charge transport properties in the solid state which are not possible for simple planar structures. Herein, we showed that the novel dispiro and propellane motifs were successfully used as robust molecular platforms for the construction of host materials (TPA, Cz, SF, and SO). The propellane derivative with three functional groups arranged in the staggered conformation was studied for the first time as the host for organic light-emitting diodes (OLEDs). The green and red phosphorescent OLEDs hosted by these dispiro and propellane derivatives exhibited excellent electroluminescence performance. Particularly, the red OLED hosted by the propellane-type SF achieved maximum efficiencies of 47.3 cd A-1, 40.2 lm W-1, and 26.6% and 97.6 cd A-1, 77.8 lm W-1, and 27.0% for the green OLED without any light out-coupling enhancement. These results suggest that the dispiro and propellane molecular platforms have great potential in the construction of OLED materials.
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Affiliation(s)
- Xiang-Yang Liu
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, P. R. China
| | - Xun Tang
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, P. R. China
| | - Yue Zhao
- Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Nanjing University , Nanjing 210023, China
| | - Danli Zhao
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, P. R. China
| | - Jian Fan
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, P. R. China
- Institute of Organic Optoelectronics (IOO), JITRI , Suzhou, Jiangsu 215212, China
| | - Liang-Sheng Liao
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University , Suzhou 215123, P. R. China
- Institute of Organic Optoelectronics (IOO), JITRI , Suzhou, Jiangsu 215212, China
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41
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Dhindsa JS, Maar RR, Barbon SM, Olivia Avilés M, Powell ZK, Lagugné-Labarthet F, Gilroy JB. A π-conjugated inorganic polymer constructed from boron difluoride formazanates and platinum(ii) diynes. Chem Commun (Camb) 2018; 54:6899-6902. [DOI: 10.1039/c8cc02424c] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A π-conjugated inorganic polymer comprised of boron difluoride formazanate and platinum(ii) diyne repeat units with unusual redox properties and a narrow optical band gap of ca. 1.4 eV is introduced.
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Affiliation(s)
- Jasveer S. Dhindsa
- Department of Chemistry and the Centre for Advanced Materials and Biomaterials Research (CAMBR)
- The University of Western Ontario
- London
- Canada
| | - Ryan R. Maar
- Department of Chemistry and the Centre for Advanced Materials and Biomaterials Research (CAMBR)
- The University of Western Ontario
- London
- Canada
| | - Stephanie M. Barbon
- Department of Chemistry and the Centre for Advanced Materials and Biomaterials Research (CAMBR)
- The University of Western Ontario
- London
- Canada
| | - María Olivia Avilés
- Department of Chemistry and the Centre for Advanced Materials and Biomaterials Research (CAMBR)
- The University of Western Ontario
- London
- Canada
| | - Zachary K. Powell
- Department of Chemistry and the Centre for Advanced Materials and Biomaterials Research (CAMBR)
- The University of Western Ontario
- London
- Canada
| | - François Lagugné-Labarthet
- Department of Chemistry and the Centre for Advanced Materials and Biomaterials Research (CAMBR)
- The University of Western Ontario
- London
- Canada
| | - Joe B. Gilroy
- Department of Chemistry and the Centre for Advanced Materials and Biomaterials Research (CAMBR)
- The University of Western Ontario
- London
- Canada
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42
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Marineau-Plante G, Juvenal F, Langlois A, Fortin D, Soldera A, Harvey PD. Multiply “trapped” 3[trans-Pt(PR3)2(CCC6H4X)2]* conformers in rigid media. Chem Commun (Camb) 2018; 54:976-979. [DOI: 10.1039/c7cc09503a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The triplet emission exhibits multiple well-defined decays depending on the θ1 and θ2 values and environment in the crystal sites.
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Affiliation(s)
| | - Frank Juvenal
- Departement de chimie
- Université de Sherbrooke
- Sherbrooke
- Canada
| | - Adam Langlois
- Departement de chimie
- Université de Sherbrooke
- Sherbrooke
- Canada
| | - Daniel Fortin
- Departement de chimie
- Université de Sherbrooke
- Sherbrooke
- Canada
| | - Armand Soldera
- Departement de chimie
- Université de Sherbrooke
- Sherbrooke
- Canada
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43
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Han HB, Wu ZG, Zheng YX. Efficient bluish green electroluminescence of iridium complexes with good electron mobility. NEW J CHEM 2018. [DOI: 10.1039/c8nj01726c] [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
Two efficient bluish green iridium complexes with good electron mobility were applied in efficient OLEDs, showing a maximum current efficiency of 71.18 cd A−1 and a maximum external quantum efficiency of 27.7%.
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Affiliation(s)
- Hua-Bo Han
- State Key Laboratory of Coordination Chemistry
- Jiangsu Key Laboratory of Advanced Organic Materials
- Collaborative Innovation Center of Advanced Microstructures
- School of Chemistry and Chemical Engineering
- Nanjing University
| | - Zheng-Guang Wu
- State Key Laboratory of Coordination Chemistry
- Jiangsu Key Laboratory of Advanced Organic Materials
- Collaborative Innovation Center of Advanced Microstructures
- School of Chemistry and Chemical Engineering
- Nanjing University
| | - You-Xuan Zheng
- State Key Laboratory of Coordination Chemistry
- Jiangsu Key Laboratory of Advanced Organic Materials
- Collaborative Innovation Center of Advanced Microstructures
- School of Chemistry and Chemical Engineering
- Nanjing University
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Chavan S, Pawal S, Lolage S, Garadkar K. Synthesis, spectroscopic characterization, luminescence and NLO properties of heterometallic M(II)-Ru(II) (M=Ni and Zn) hybrid complexes composed of coordination and organometallic sites. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.10.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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45
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Yu T, Yang Q, Zhu Z, Zhao Y, Liu X, Wei C, Zhang H. Synthesis, characterization and photophysical properties of a new Cu 2+ selective phosphorescent sensor. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.10.032] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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46
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The Effect of Number of Porphyrin Polymer Units on Bandgap for ππ* Conjugation and Charge Transfer System Based on Simulation. J Inorg Organomet Polym Mater 2017. [DOI: 10.1007/s10904-017-0575-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Miao Y, Tao P, Wang K, Li H, Zhao B, Gao L, Wang H, Xu B, Zhao Q. Highly Efficient Red and White Organic Light-Emitting Diodes with External Quantum Efficiency beyond 20% by Employing Pyridylimidazole-Based Metallophosphors. ACS APPLIED MATERIALS & INTERFACES 2017; 9:37873-37882. [PMID: 28994584 DOI: 10.1021/acsami.7b10300] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Two highly efficient red neutral iridium(III) complexes, Ir1 and Ir2, were rationally designed and synthesized by selecting two pyridylimidazole derivatives as the ancillary ligands. Both Ir1 and Ir2 show nearly the same photoluminescence emission with the maximum peak at 595 nm (shoulder band at about 638 nm) and achieve high solution quantum yields of up to 0.47 for Ir1 and 0.57 for Ir2. Employing Ir1 and Ir2 as emitters, the fabricated red organic light-emitting diodes (OLEDs) show outstanding performance with the maximum external quantum efficiency (EQE), current efficiency (CE), and power efficiency (PE) of 20.98%, 33.04 cd/A, and 33.08 lm/W for the Ir1-based device and 22.15%, 36.89 cd/A, and 35.85 lm/W for the Ir2-based device, respectively. Furthermore, using Ir2 as red emitter, a trichromatic hybrid white OLED, showing good warm white emission with low correlated color temperature of <2200 K under the voltage of 4-6 V, was fabricated successfully. The white device also realizes excellent device efficiencies with the maximum EQE, CE, and PE reaching 22.74%, 44.77 cd/A, and 46.89 lm/W, respectively. Such high electroluminescence performance for red and white OLEDs indicates that Ir1 and Ir2 as efficient red phosphors have great potential for future OLED displays and lightings applications.
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Affiliation(s)
- Yanqin Miao
- Research Center of Advanced Materials Science and Technology and MOE Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology , Taiyuan 030024, P. R. China
| | - Peng Tao
- Research Center of Advanced Materials Science and Technology and MOE Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology , Taiyuan 030024, P. R. China
- Key Laboratory for Organic Electronics and Information Displays and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications (NUPT) , Nanjing 210023, P. R. China
| | - Kexiang Wang
- Research Center of Advanced Materials Science and Technology and MOE Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology , Taiyuan 030024, P. R. China
| | - Hongxin Li
- Key Laboratory for Organic Electronics and Information Displays and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications (NUPT) , Nanjing 210023, P. R. China
| | - Bo Zhao
- Research Center of Advanced Materials Science and Technology and MOE Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology , Taiyuan 030024, P. R. China
| | - Long Gao
- Research Center of Advanced Materials Science and Technology and MOE Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology , Taiyuan 030024, P. R. China
| | - Hua Wang
- Research Center of Advanced Materials Science and Technology and MOE Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology , Taiyuan 030024, P. R. China
| | - Bingshe Xu
- Research Center of Advanced Materials Science and Technology and MOE Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology , Taiyuan 030024, P. R. China
| | - Qiang Zhao
- Key Laboratory for Organic Electronics and Information Displays and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications (NUPT) , Nanjing 210023, P. R. China
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Synthesis and photophysical characterization of phosphorescent platinum(II) bis-(trimethylsilyl)ethynyl-phenanthroline organometallic complexes with bis-arylethynyl derivatives. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.09.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Juvenal F, Bonnot A, Fortin D, Harvey PD. The trans-Bis( p-thioetherphenylacetynyl)bis(phosphine)platinum(II) Ligands: A Step towards Predictability and Crystal Design. ACS OMEGA 2017; 2:7433-7443. [PMID: 31457310 PMCID: PMC6645136 DOI: 10.1021/acsomega.7b01352] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 10/19/2017] [Indexed: 06/10/2023]
Abstract
Two organometallic ligands L1 (trans-[p-MeSC6H4C≡C-Pt(PR3)2-C≡CC6H4SMe; R = Me]) and L2 (R = Et) react with CuX salts (X = Cl, Br, I) in MeCN to form one-dimensional (1D) or two-dimensional (2D) coordination polymers (CPs). The clusters formed with copper halide can either be step cubane Cu4I4, rhomboids Cu2X2, or simply CuI. The formed CPs with L1, which is less sterically demanding than L2, exhibit a crystallization solvent molecule (MeCN), whereas those formed with L2 do not incorporate MeCN molecules in the lattice. These CPs were characterized by X-ray crystallography, thermogravimetric analysis, IR, Raman, absorption, and emission spectra as well as photophysical measurements in the presence and absence of crystallization MeCN molecules for those CPs with the solvent in the lattice (i.e., [(Cu4I4)L1·MeCN] n (CP1), [(Cu2Br2)L1·2MeCN] n (CP3), and [(Cu2Cl2)L1·MeCN] n (CP5)). The crystallization molecules were removed under vacuum to evaluate the porosity of the materials by Brunauer-Emmett-Teller (N2 at 77 K). The 2D CP shows a reversible type 1 adsorption isotherm for both CO2 and N2, indicative of microporosity, whereas the 1D CPs do not capture more solvent molecules or CO2.
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