1
|
Kato M. Chromic soft crystals based on luminescent platinum(II) complexes. IUCRJ 2024; 11:442-452. [PMID: 38860955 PMCID: PMC11220876 DOI: 10.1107/s2052252524003658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Accepted: 04/22/2024] [Indexed: 06/12/2024]
Abstract
Platinum(II) complexes of square-planar geometry are interesting from a crystal engineering viewpoint because they exhibit strong luminescence based on the self-assembly of molecular units. The luminescence color changes in response to gentle stimuli, such as vapor exposure or weak mechanical forces. Both the molecular and the crystal designs for soft crystals are critical to effectively generate the chromic luminescence phenomenon of Pt(II) complexes. In this topical review, strategies for fabricating chromic luminescent Pt(II) complexes are described from a crystal design perspective, focusing on the structural regulation of Pt(II) complexes that exhibit assembly-induced luminescence via metal-metal interactions and structural control of anionic Pt(II) complexes using cations. The research progress on the evolution of various chromic luminescence properties of Pt(II) complexes, including the studies conducted by our group, are presented here along with the latest research outcomes, and an overview of the frontiers and future potential of this research field is provided.
Collapse
Affiliation(s)
- Masako Kato
- Department of Applied Chemistry for EnvironmentKwansei Gakuin University1 Gakuen UegaharaSandaHyogo669-1330Japan
| |
Collapse
|
2
|
Kim H, Ryu CH, Hong M, Lee KM, Jo U, Kang Y. Blue Phosphorescent Pt(II) Compound Based on Tetradentate Carbazole/2,3'-Bipyridine Ligand and Its Application in Organic Light-Emitting Diodes. Molecules 2024; 29:2929. [PMID: 38930994 PMCID: PMC11206379 DOI: 10.3390/molecules29122929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Revised: 06/17/2024] [Accepted: 06/17/2024] [Indexed: 06/28/2024] Open
Abstract
The tetradentate ligand, merging a carbazole unit with high triplet energy and dimethoxy bipyridine, renowned for its exceptional quantum efficiency in coordination with metals like Pt, is expected to demonstrate remarkable luminescent properties. However, instances of tetradentate ligands such as bipyridine-based pyridylcarbazole derivatives remain exceptionally scarce in the current literature. In this study, we developed a tetradentate ligand based on carbazole and 2,3'-bipyridine and successfully complexed it with Pt(II) ions. This novel compound (1) serves as a sky-blue phosphorescent material for use in light-emitting diodes. Based on single-crystal X-ray analysis, compound 1 has a distorted square-planar geometry with a 5/6/6 backbone around the Pt(II) core. Bright sky-blue emissions were observed at 488 and 516 nm with photoluminescent quantum yields of 34% and a luminescent lifetime of 2.6 μs. TD-DFT calculations for 1 revealed that the electronic transition was mostly attributed to the ligand-centered (LC) charge transfer transition with a small contribution from the metal-to-ligand charge transfer transition (MLCT, ~14%). A phosphorescent organic light-emitting device was successfully fabricated using this material as a dopant, along with 3'-di(9H-carbazol-9-yl)-1,1'-biphenyl (mCBP) and 9-(3'-carbazol-9-yl-5-cyano-biphenyl-3-yl)-9H-carbazole-3-carbonitrile (CNmCBPCN) as mixed hosts. A maximum quantum efficiency of 5.2% and a current efficiency of 15.5 cd/A were obtained at a doping level of 5%.
Collapse
Affiliation(s)
- Hakjo Kim
- Division of Science Education, Department of Chemistry, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Chan-Hee Ryu
- Division of Science Education, Department of Chemistry, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Miso Hong
- Division of Science Education, Department of Chemistry, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Kang Mun Lee
- Division of Science Education, Department of Chemistry, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Unhyeok Jo
- School of Chemical Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon 16419, Republic of Korea
| | - Youngjin Kang
- Division of Science Education, Department of Chemistry, Kangwon National University, Chuncheon 24341, Republic of Korea
| |
Collapse
|
3
|
Tong KN, Wu C, Wu Y, Li S, Jin Z, Shi K, Jung S, Wang X, Guan Y, Yang C, Wei G. Cascading Energy Transfer for Highly Efficient Deep-Red OLED Emission with Cyclometalated [3+2+1] Iridium Complexes. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2307500. [PMID: 37940631 DOI: 10.1002/smll.202307500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 10/17/2023] [Indexed: 11/10/2023]
Abstract
The promising cyclometalated iridium (III) complexes have been proved to possess great potential in vacuum-deposited organic light-emitting diodes (OLEDs) applications for full-color displays and white solid-state lighting sources. Herein, based on the unique bidentate ligand of dibenzo[a,c]phenazine (dbpz) group with strong conjugated effect of aromatic rings for red emission, four novel [3+2+1] coordinated iridium (III) emissive materials have been rationally designed and synthesized. The monodentate ligands of -CN and -OCN have been effectively employed to tune the deep-red emission of 628-675 nm with high photoluminescence quantum yields up to 98%. Moreover, all devices displayed deep-red color coordinates ranging from (0.675, 0.325) to (0.716, 0.284), which is close to the standard-red color coordinates of (0.708, 0.292), as recommended by International Telecommunication Union Radiocommunication (ITU-R) BT.2020. The device based on nBuIr(dbpz)CN with an exciplex cohost has exhibited maximum external quantum efficiencies of 20.7% and good stability. With nBuIr(dbpz)CN as an effective sensitizer, the nBuIr(dbpz)OCN based phosphorescent OLED devices have successfully demonstrated cascading energy transfer processes, contributing to pure red emission with maximum luminance as high as 6471 cd m-2. Therefore, this work has been successfully demonstrated rational molecular design strategy of [3+2+1] iridium complexes to obtain highly efficient deep-red electrophosphorescent emission.
Collapse
Affiliation(s)
- Kai-Ning Tong
- Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China
| | - Chengcheng Wu
- Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China
- Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, Shenzhen, 518055, China
| | - Yuan Wu
- PURI Materials, Shenzhen, 518133, China
| | - Siqi Li
- Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China
| | - Zhaoyun Jin
- Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China
| | - Kefei Shi
- Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China
- Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, Shenzhen, 518055, China
| | - Sinyeong Jung
- Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China
- Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, Shenzhen, 518055, China
| | - Xin Wang
- Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China
| | | | - Chen Yang
- PURI Materials, Shenzhen, 518133, China
| | - Guodan Wei
- Institute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China
- Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, Shenzhen, 518055, China
| |
Collapse
|
4
|
Soto MA, MacLachlan MJ. Responsive macrocyclic and supramolecular structures powered by platinum. Chem Sci 2024; 15:431-441. [PMID: 38179527 PMCID: PMC10763547 DOI: 10.1039/d3sc05524h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 11/30/2023] [Indexed: 01/06/2024] Open
Abstract
Humankind's manipulation of platinum dates back more than two millennia to burial objects. Since then, its use has evolved from purely decorative purposes in jewelry to more functional applications such as in catalysts, pharmaceuticals, and bioimaging agents. Platinum offers a range of properties arguably unmatched by any other metal, including electroactivity, photoluminescence, chromic behaviour, catalysis, redox reactivity, photoreactivity, and stimuli-controlled intermetallic interactions. The vast body of knowledge generated by the exploration of these and other properties of platinum has recently merged with other areas of chemistry such as supramolecular and host-guest chemistry. This has shown us that platinum can incorporate its responsive character into supramolecular assemblies (e.g., macrocycles and polymers) to produce materials with tailorable functions and responses. In this Perspective Article, we cover some platinum-powered supramolecular structures reported by us and others, hoping to inspire new and exciting discoveries in the field.
Collapse
Affiliation(s)
- Miguel A Soto
- Department of Chemistry, University of British Columbia 2036 Main Mall Vancouver British Columbia V6T 1Z1 Canada
| | - Mark J MacLachlan
- Department of Chemistry, University of British Columbia 2036 Main Mall Vancouver British Columbia V6T 1Z1 Canada
- Quantum Matter Institute, University of British Columbia 2355 East Mall Vancouver British Columbia V6T 1Z4 Canada
- WPI Nano Life Science Institute, Kanazawa University Kanazawa 920-1192 Japan
| |
Collapse
|
5
|
Greenberg M, Tulloch KM, Reynoso ME, Knapp JL, Sayem FH, Bartkus DD, Lum RH, LaFratta CN, Tanski JM, Anderson CM. Synthesis, Structure, and Photophysical Properties of Platinum Compounds with Thiophene-Derived Cyclohexyl Diimine Ligands. ACS OMEGA 2023; 8:38587-38596. [PMID: 37867690 PMCID: PMC10586441 DOI: 10.1021/acsomega.3c05567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Accepted: 09/21/2023] [Indexed: 10/24/2023]
Abstract
Platinum(II) and platinum(IV) compounds were prepared by the stereoselective and regioselective reactions of thiophene-derived cyclohexyl diimine C^N^N-ligands with [Pt2Me4(μ-SMe2)2]. Newly synthesized ligands were characterized by NMR spectroscopy and elemental analysis, and Pt(II)/Pt(IV) compounds were characterized by NMR spectroscopy, elemental analysis, high-resolution mass spectrometry, and single-crystal X-ray diffraction. UV-vis absorbance and photoluminescence measurements were performed on newly synthesized complexes, as well as structurally related Pt(II)/Pt(IV) compounds with benzene-derived cyclohexyl diimine ligands, in dichloromethane solution, as solids, and as 5% by weight PMMA-doped films. DFT and TD-DFT calculations were performed, and the results were compared with the observed spectroscopic properties of the newly synthesized complexes. X-ray total scattering measurements and real space pair distribution function analysis were performed on the synthesized complexes to examine the local- and intermediate-range atomic structures of the emissive solid states.
Collapse
Affiliation(s)
- Matthew
W. Greenberg
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road,Annandale-on-Hudson, New York 12504, United States
| | - Kris M. Tulloch
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road,Annandale-on-Hudson, New York 12504, United States
| | - Michelle E. Reynoso
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road,Annandale-on-Hudson, New York 12504, United States
| | - Juliette L. Knapp
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road,Annandale-on-Hudson, New York 12504, United States
| | - Farman H. Sayem
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road,Annandale-on-Hudson, New York 12504, United States
| | - Daphne D. Bartkus
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road,Annandale-on-Hudson, New York 12504, United States
| | - Ryan H. Lum
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road,Annandale-on-Hudson, New York 12504, United States
| | - Christopher N. LaFratta
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road,Annandale-on-Hudson, New York 12504, United States
| | - Joseph M. Tanski
- Department
of Chemistry, Vassar College, Poughkeepsie, New York 12604, United States
| | - Craig M. Anderson
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road,Annandale-on-Hudson, New York 12504, United States
| |
Collapse
|
6
|
Blue Emissive Palladium(II) Complex with Benzoquinoline and N-heterocyclic Carbene Ligands. J Organomet Chem 2023. [DOI: 10.1016/j.jorganchem.2023.122669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
|
7
|
Kim JM, Cheong K, Jiang J, Jeon SO, Hong WP, Lee JY. Tetradentate Pt complexes for organic light-emitting diodes. TRENDS IN CHEMISTRY 2023. [DOI: 10.1016/j.trechm.2023.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
|
8
|
Zhang HH, Jing J, Xu G, Song YX, Wu SX, Chen XH, Zhang DS, Zhang XP, Shi ZF. Circularly polarized luminescence of pinene-modified tetradentate platinum(II) enantiomers containing fused 5/6/6 metallocycles. Heliyon 2022; 8:e11358. [PMID: 36387510 PMCID: PMC9649974 DOI: 10.1016/j.heliyon.2022.e11358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 10/12/2022] [Accepted: 10/27/2022] [Indexed: 11/06/2022] Open
Abstract
In this study, a couple of tetradentate Pt(II) enantiomers ((−)-1 and (+)-1) and a couple of tetradentate Pt(IV) enantiomers ((−)-2 and (+)-2) containing fused 5/6/6 metallocycles have been synthesized by controlling reaction conditions. Two valence forms could transform into each other through mild chemical oxidants and reductants. Single-crystal X-ray diffraction confirms the structures of (−)-1 and (−)-2. The coordination sphere of the Pt(II) cation in (−)-1 displays a distorted square-planar geometry and a platinum centroid helix chirality. In contrast, the structure of (−)-2 reveals a distorted octahedral geometry. The solution and the solid of (−)-1 are highly luminescent. Complex (−)-1 shows a prominent aggregation-induced emission enhancement (AIEE) behavior in DMSO/water solution with emission quantum yield (Φem) up to 73.2%. Furthermore, highly phosphorescent Pt(II) enantiomers exhibit significant circularly polarized luminescence (CPL) with a dissymmetry factor (glum) of order 10−3 in CH2Cl2 solutions at room temperature. Symmetrically appreciable CPL signals are observed for the enantiomers (−)-1 and (+)-1.
Collapse
|
9
|
Li G, Wen J, Zhan F, Lou W, Yang YF, Hu Y, She Y. Fused 6/5/6 Metallocycle-Based Tetradentate Pt(II) Emitters for Efficient Green Phosphorescent OLEDs. Inorg Chem 2022; 61:11218-11231. [PMID: 35834800 DOI: 10.1021/acs.inorgchem.2c01202] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Pt(II) complexes are promising phosphorescent materials for organic light-emitting diode (OLED) applications in the fields of display, lighting, healthcare, aerospace, and so on. A series of novel biphenyl (bp)-based tetradentate 6/5/6 Pt(II) emitters using oxygen or carbon as a linking atom was designed and developed. The intermolecular interactions in crystal packing, electrochemical, and photophysical properties of the bp-based Pt(II) emitters and also their excited-state properties were systematically studied, which could be effectively regulated by ligand modification through linking group control; however, their emission spectra nearly showed no change. All the bp-based Pt(II) emitters exhibited vibronically featured emission spectra with dominant peaks at 502-505 nm and photoluminescent quantum yields of 24-34% in dichloromethane solution. Green OLED using Pt(bp-12) as an emitter achieved a maximum brightness (Lmax) of 16,644 cd/m2.
Collapse
Affiliation(s)
- Guijie Li
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Jianfeng Wen
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Feng Zhan
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Weiwei Lou
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Yun-Fang Yang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Ying Hu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Yuanbin She
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| |
Collapse
|
10
|
Metal Peptide Conjugates in Cell and Tissue Imaging and Biosensing. Top Curr Chem (Cham) 2022; 380:30. [PMID: 35701677 PMCID: PMC9197911 DOI: 10.1007/s41061-022-00384-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Accepted: 05/10/2022] [Indexed: 11/05/2022]
Abstract
Metal complex luminophores have seen dramatic expansion in application as imaging probes over the past decade. This has been enabled by growing understanding of methods to promote their cell permeation and intracellular targeting. Amongst the successful approaches that have been applied in this regard is peptide-facilitated delivery. Cell-permeating or signal peptides can be readily conjugated to metal complex luminophores and have shown excellent response in carrying such cargo through the cell membrane. In this article, we describe the rationale behind applying metal complexes as probes and sensors in cell imaging and outline the advantages to be gained by applying peptides as the carrier for complex luminophores. We describe some of the progress that has been made in applying peptides in metal complex peptide-driven conjugates as a strategy for cell permeation and targeting of transition metal luminophores. Finally, we provide key examples of their application and outline areas for future progress.
Collapse
|
11
|
Kang J, Moon SH, Paek S, Kang Y. Blue Phosphorescent Platinum(IV) Complex Bearing Bipyridine Ligand for Potential Application in Organic Light-Emitting Diodes (OLEDs). CAN J CHEM 2022. [DOI: 10.1139/cjc-2022-0093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A cyclometalated Pt(IV) compound, Pt(dfpypy)2(Me)Cl (1), with blue phosphorescence was prepared using 2′,6′-difluoro-2,3′-bipyridine (dfpypy) as a C^N chelate ligand. Compound 1 exhibits distorted octahedral geometries around the platinum ion and has strong intermolecular interactions via interatomic contacts (H···N/F/Cl) involving hydrogen bond interactions based on Hirshfeld surface analysis. This compound shows bright blue phosphorescence emissions with λmax = 427 and 455 nm and a high photoluminescence quantum efficiency (PLQY, ΦPL= 0.60). Furthermore, good blue color purity with Commission Internationale de L’Eclairage (1931) coordinates (x, y) of (0.14, 0.17) was observed in the thin film which was close to pure blue. TD-DFT calculations revealed that the electronic transition can be attributed to a combination of intra-ligand charge transfer (ILCT, πbpy−π*bpy) and ligand to ligand charge transfer [LLCT, pz(Cl)−π*(dfpypy)] with a small contribution from metal-to-ligand charge transfer (MLCT, Ptd−π*bpy). Owing to the introduction of the electronegative C^N chelate dfpypy, the emission of compound 1 was blue-shifted by 20 nm compared to its analog [Pt(ppy)2(Me)Cl] (λmax= 447), where ppy is 2-phenylpyridine.
Collapse
Affiliation(s)
- Jisu Kang
- Kangwon National University, 34962, Chuncheon, Korea (the Republic of)
| | - Suk-Hee Moon
- Kyungnam College of Information and Technology, Department of Food and Nutrition, Busan, Korea (the Republic of)
| | - Sanghyun Paek
- Sangmyung University, 35005, Department of Chemistry and Energy Engineering, Jongno-gu, Korea (the Republic of)
| | - Yongjin Kang
- Kangwon National University, 34962, Science Education, Kangwon National University, Kangwon National university, Kangwon-Do, Chuncheon, Korea (the Republic of), 24341,
| |
Collapse
|
12
|
Hruzd M, le Poul N, Cordier M, Kahlal S, Saillard JY, Achelle S, Gauthier S, Robin-le Guen F. Luminescent cyclometalated alkynylplatinum(II) complexes with 1,3-di(pyrimidin-2-yl)benzene ligands: synthesis, electrochemistry, photophysics and computational studies. Dalton Trans 2022; 51:5546-5560. [PMID: 35302571 DOI: 10.1039/d1dt04237h] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this article, we report on a series of cyclometalated chloro- and alkynyl-platinum(II) complexes bearing various tridentate N^C^N-cyclometalated ligands derived from 1,3-bis(pyrimidin-2-yl)benzene. The X-ray crystal structures of two alkynyl-platinum(II) complexes were determined and other structures were DFT-calculated. Electrochemical and DFT-computational studies suggest a ligand-centred reduction on the R1-substituted N^C^N ligand, whereas oxidation likely occurs either on the Pt-phenylacetylide moiety and/or the cyclometalated ligand. In CH2Cl2 solution at room temperature, the complexes show phosphorescent emissions ranging from green to orange, depending on the R1 and R2 substituents on the ligands. In KBr solid state matrix, excluding complexes bearing a trifluoromethyl substituted ligand, all compounds exhibit red emission. The presence of an alkynyl ancillary ligand has limited influence on absorption and emission spectra except in the case of the complex with the strongly electron-donating diphenylamino R2 substituent on the alkynyl ligand, for which a significant red-shift was observed. The alkynyl Pt(II) complex with OMe groups as both R1 and R2 substituents shows the best emission quantum yield (0.81 in CH2Cl2 solution) in this series. The full series of DFT calculated band gaps correlated generally well with the electrochemical and absorption data and reasonably model the impact of the substituents on the electronics of these complexes.
Collapse
Affiliation(s)
- Mariia Hruzd
- Univ. Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - Nicolas le Poul
- Laboratoire de Chimie, Électrochimie Moléculaires et Chimie Analytique, UMR CNRS 6521, Université de Bretagne Occidentale, UFR Sciences et Techniques, 6 avenue Victor Le Gorgeu - CS 93837, F-29238 Brest Cedex 3, France
| | - Marie Cordier
- Univ. Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - Samia Kahlal
- Univ. Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - Jean-Yves Saillard
- Univ. Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - Sylvain Achelle
- Univ. Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - Sébastien Gauthier
- Univ. Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| | - Françoise Robin-le Guen
- Univ. Rennes, CNRS, ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226, F-35000 Rennes, France.
| |
Collapse
|
13
|
Park HJ, Boelke CL, Cheong PHY, Hwang DH. Dinuclear Pt(II) Complexes with Red and NIR Emission Governed by Ligand Control of the Intramolecular Pt-Pt Distance. Inorg Chem 2022; 61:5178-5183. [PMID: 35320671 DOI: 10.1021/acs.inorgchem.1c03967] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Red and near-infrared (NIR) phosphorescent double-decker dinuclear Pt(II) complexes were synthesized, and their structural and spectroscopic properties were characterized. The Pt(II) complexes, which are composed of achiral ligands and are themselves chiral, were shown to exist as racemic mixtures using single-crystal X-ray crystallography. The Pt(II) complexes have different intramolecular Pt-Pt distances that are governed by the electronic characteristics of the component C^N ligands. Specifically, strengthening of π-back-donation between Pt(II) and N atom of the C^N ligand leads to shortening of the Pt-Pt distance. The results of both experimental and computational investigations show that the Pt-Pt distances in the dinuclear Pt(II) complexes significantly influence the band gap energies and corresponding emission wavelengths. Consequently, the uncovered C^N ligand based method to finely control intramolecular Pt-Pt distances in dinuclear Pt(II) complexes can be utilized as a guideline for the design of the double-decker dinuclear Pt(II) complexes with red and NIR tuned phosphorescence.
Collapse
Affiliation(s)
- Hea Jung Park
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Republic of Korea
| | - Claire Louise Boelke
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| | - Paul Ha-Yeon Cheong
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| | - Do-Hoon Hwang
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Republic of Korea
| |
Collapse
|
14
|
Li G, Guo H, Fang X, Yang Y, Sun Y, Lou W, Zhang Q, She Y. Tuning the Excited State of Tetradentate Pd(
II
) and Pt(
II
) Complexes through Benzannulated
N
‐Heteroaromatic
Ring and Central Metal. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202100641] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Guijie Li
- College of Chemical Engineering Zhejiang University of Technology Hangzhou Zhejiang 310014 China
| | - Hua Guo
- College of Chemical Engineering Zhejiang University of Technology Hangzhou Zhejiang 310014 China
| | - Xiaoli Fang
- College of Chemical Engineering Zhejiang University of Technology Hangzhou Zhejiang 310014 China
| | - Yun‐Fang Yang
- College of Chemical Engineering Zhejiang University of Technology Hangzhou Zhejiang 310014 China
| | - Yulu Sun
- College of Chemical Engineering Zhejiang University of Technology Hangzhou Zhejiang 310014 China
| | - Weiwei Lou
- College of Chemical Engineering Zhejiang University of Technology Hangzhou Zhejiang 310014 China
| | - Qisheng Zhang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering Zhejiang University Hangzhou Zhejiang 310027 China
| | - Yuanbin She
- College of Chemical Engineering Zhejiang University of Technology Hangzhou Zhejiang 310014 China
| |
Collapse
|
15
|
Coffey B, Clough L, Bartkus DD, McClellan IC, Greenberg MW, LaFratta CN, Tanski JM, Anderson CM. Photophysical Properties of Cyclometalated Platinum(II) Diphosphine Compounds in the Solid State and in PMMA Films. ACS OMEGA 2021; 6:28316-28325. [PMID: 34723028 PMCID: PMC8552474 DOI: 10.1021/acsomega.1c04509] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 10/04/2021] [Indexed: 05/06/2023]
Abstract
Platinum(II) compounds were synthesized with both chelate cyclometalated ligands and chelate diphosphine ligands. The cyclometalated ligands include phenylpyridine and a benzothiophene-containing ligand. The three new benzothiophene compounds were characterized by nuclear magnetic resonance (NMR) spectroscopy, high-resolution mass spectrometry (HR-MS), and photophysical measurements. In the case of one compound, L1-DPPM, the structure was determined by single crystal X-ray diffraction. The structural coherence of the noncrystalline emissive solid state was measured by X-ray total scattering real space pair distribution function analysis. Quantum yield values of all of the platinum compounds measured in the solid state and in PMMA films were much greater than in solution.
Collapse
Affiliation(s)
- Belle Coffey
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road, Annandale-on-Hudson, New York 12504, United States
| | - Lily Clough
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road, Annandale-on-Hudson, New York 12504, United States
| | - Daphne D. Bartkus
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road, Annandale-on-Hudson, New York 12504, United States
| | - Ian C. McClellan
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road, Annandale-on-Hudson, New York 12504, United States
| | - Matthew W. Greenberg
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road, Annandale-on-Hudson, New York 12504, United States
| | - Christopher N. LaFratta
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road, Annandale-on-Hudson, New York 12504, United States
| | - Joseph M. Tanski
- Department
of Chemistry, Vassar College, Poughkeepsie, New York 12604, United States
| | - Craig M. Anderson
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road, Annandale-on-Hudson, New York 12504, United States
| |
Collapse
|
16
|
Feuerstein W, Breher F. Non-palindromic (C^C^D) gold(III) pincer complexes are not accessible by intramolecular oxidative addition of biphenylenes - an experimental and quantum chemical study. Dalton Trans 2021; 50:9754-9767. [PMID: 34169955 DOI: 10.1039/d1dt00953b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
We herein report on the synthesis of biphenylenes substituted with a pyridine (N), a phosphine (P) and a carbene (C') donor as well as a carbene donor with additional pyridine in the lateral position. We describe the synthesis and structures of derived gold(i) complexes, which we tried to use for the synthesis of non-palindromic [(C^C^D)AuIII] pincer complexes by means of an intramolecular oxidative addition of the strained biphenylene ring. However, the anticipated formation of gold(iii) complexes failed due to kinetic and thermodynamic reasons, which we extensively investigated by quantum chemical calculations. Furthermore, we shed light on the oxidative addition of biphenylene to two different gold(i) systems reported in the literature. Our comprehensive quantum-chemical analysis is complemented by NMR experiments.
Collapse
Affiliation(s)
- Wolfram Feuerstein
- Karlsruhe Institute of Technology (KIT), Institute of Inorganic Chemistry, Division Molecular Chemistry, Engesserstr. 15, 76131 Karlsruhe, Germany.
| | - Frank Breher
- Karlsruhe Institute of Technology (KIT), Institute of Inorganic Chemistry, Division Molecular Chemistry, Engesserstr. 15, 76131 Karlsruhe, Germany.
| |
Collapse
|
17
|
Mala B, Murtagh LE, Farrow CMA, Akien GR, Halcovich NR, Allinson SL, Platts JA, Coogan MP. Photochemical Oxidation of Pt(IV)Me 3(1,2-diimine) Thiolates to Luminescent Pt(IV) Sulfinates. Inorg Chem 2021; 60:7031-7043. [PMID: 33900771 DOI: 10.1021/acs.inorgchem.0c03553] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report the formation of dinuclear complexes from, and photochemical oxidation of, (CH3)3-Pt(IV)(N^N) (N^N = 1,2-diimine derivatives) complexes of thiophenolate ligands to the analogous sulfinates (CH3)3Pt(N^N)(SO2Ph) and structural, spectroscopic, and theoretical studies of the latter revealing tunable photophysics depending upon the 1,2-diimine ligands. Electron-rich thiolate and conjugated 1,2-diimines encourage formation of thiolate-bridged dinuclear complexes; smaller 1,2-diimines or electron-poor thiolates favor mononuclear complexes. Photooxidation of the thiolate ligand yields hitherto unreported Pt(IV)-SO2R complexes, promoted by electron-deficient thiolates such as 4-nitrothiophenol, which exclusively forms the sulfinate complex. Such complexes exhibit expected absorptions due to π-π* ligand transitions of the 1,2-diimines mixed with spin-allowed singlet MLCT (d-π*) at relatively high energy (270-290 nm), as well as unexpected broad, lower energy absorptions between 360 and 490 nm. DFT data indicate that these low energy absorption bands result from excitation of Pt-S and Pt-C σ-bonding electrons to π* orbitals on sulfinate and 1,2-diimine, the latter of which gives rise to emission in the visible range.
Collapse
Affiliation(s)
- Barbora Mala
- Department of Chemistry, University of Lancaster, Lancaster, LA1 4YB, United Kingdom
| | - Laura E Murtagh
- Department of Chemistry, University of Lancaster, Lancaster, LA1 4YB, United Kingdom
| | - Charlotte M A Farrow
- Department of Chemistry, University of Lancaster, Lancaster, LA1 4YB, United Kingdom
| | - Geoffrey R Akien
- Department of Chemistry, University of Lancaster, Lancaster, LA1 4YB, United Kingdom
| | - Nathan R Halcovich
- Department of Chemistry, University of Lancaster, Lancaster, LA1 4YB, United Kingdom
| | - Sarah L Allinson
- Department of Biomedical and Life Sciences, University of Lancaster, Lancaster, LA1 4YG, United Kingdom
| | - James A Platts
- School of Chemistry, Cardiff University, Park Place, Cardiff, CF10 3AT, United Kingdom
| | - Michael P Coogan
- Department of Chemistry, University of Lancaster, Lancaster, LA1 4YB, United Kingdom
| |
Collapse
|
18
|
2,6-Bis(1-butyl-1H-1,2,3-triazol-1-yl)pyridine-capped poly(N-vinylpyrrolidone)s: synthesis, complexation with metal ions, and self-assembly behavior. Colloid Polym Sci 2021. [DOI: 10.1007/s00396-020-04798-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
19
|
Ni S, Hribersek M, Baddigam SK, Ingner FJL, Orthaber A, Gates PJ, Pilarski LT. Mechanochemical Solvent-Free Catalytic C-H Methylation. Angew Chem Int Ed Engl 2021; 60:6660-6666. [PMID: 33031646 PMCID: PMC7986365 DOI: 10.1002/anie.202010202] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Indexed: 12/29/2022]
Abstract
The mechanochemical, solvent-free, highly regioselective, rhodium-catalyzed C-H methylation of (hetero)arenes is reported. The reaction shows excellent functional-group compatibility and is demonstrated to work for the late-stage C-H methylation of biologically active compounds. The method requires no external heating and benefits from considerably shorter reaction times than previous solution-based C-H methylation protocols. Additionally, the mechanochemical approach is shown to enable the efficient synthesis of organometallic complexes that are difficult to generate conventionally.
Collapse
Affiliation(s)
- Shengjun Ni
- Department of Chemistry—BMCUppsala UniversityBox 57675123UppsalaSweden
| | - Matic Hribersek
- Department of Chemistry—BMCUppsala UniversityBox 57675123UppsalaSweden
| | | | | | - Andreas Orthaber
- Department of Chemistry—Ångström LaboratoriesUppsala UniversityBox 52375120UppsalaSweden
| | - Paul J. Gates
- School of ChemistryUniversity of BristolCantock's Close, CliftonBristolBS8 1TSUK
| | | |
Collapse
|
20
|
Feuerstein W, Holzer C, Gui X, Neumeier L, Klopper W, Breher F. Synthesis of New Donor-Substituted Biphenyls: Pre-ligands for Highly Luminescent (C^C^D) Gold(III) Pincer Complexes. Chemistry 2020; 26:17156-17164. [PMID: 32735695 PMCID: PMC7821303 DOI: 10.1002/chem.202003271] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 07/31/2020] [Indexed: 12/31/2022]
Abstract
We herein report on new synthetic strategies for the preparation of pyridine and imidazole substituted 2,2'-dihalo biphenyls. These structures are pre-ligands suitable for the preparation of respective stannoles. The latter can successfully be transmetalated to K[AuCl4 ] forming non-palindromic [(C^C^D)AuIII ] pincer complexes featuring a lateral pyridine (D=N) or N-heterocyclic carbene (NHC, D=C') donor. The latter is the first report on a pincer complex with two formally anionic sp2 and one carbenic carbon donor. The [(C^C^D)AuIII ] complexes show intense phosphorescence in solution at room temperature. We discuss the developed multistep strategy and touch upon synthetic challenges. The prepared complexes have been fully characterized including X-ray diffraction analysis. The gold(III) complexes' photophysical properties have been investigated by absorption and emission spectroscopy as well as quantum chemical calculations on the quasi-relativistic two-component TD-DFT and GW/Bethe-Salpeter level including spin-orbit coupling. Thus, we shed light on the electronic influence of the non-palindromic pincer ligand and reveal non-radiative relaxation pathways of the different ligands employed.
Collapse
Affiliation(s)
- Wolfram Feuerstein
- Institute of Inorganic ChemistryKarlsruhe Institute of, Technology (KIT)Engesserstr. 1576131KarlsruheGermany
| | - Christof Holzer
- Institute of Theoretical Solid State PhysicsKarlsruhe Institute of, Technology (KIT)Wolfgang-Gaede-Straße 176131KarlsruheGermany
| | - Xin Gui
- Institute of Physical ChemistryKarlsruhe Institute of, Technology (KIT)Fritz-Haber-Weg 276131KarlsruheGermany
| | - Lilly Neumeier
- Institute of Inorganic ChemistryKarlsruhe Institute of, Technology (KIT)Engesserstr. 1576131KarlsruheGermany
| | - Wim Klopper
- Institute of Physical ChemistryKarlsruhe Institute of, Technology (KIT)Fritz-Haber-Weg 276131KarlsruheGermany
| | - Frank Breher
- Institute of Inorganic ChemistryKarlsruhe Institute of, Technology (KIT)Engesserstr. 1576131KarlsruheGermany
| |
Collapse
|
21
|
Ni S, Hribersek M, Baddigam SK, Ingner FJL, Orthaber A, Gates PJ, Pilarski LT. Mechanochemical Solvent‐Free Catalytic C−H Methylation. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202010202] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Shengjun Ni
- Department of Chemistry—BMC Uppsala University Box 576 75123 Uppsala Sweden
| | - Matic Hribersek
- Department of Chemistry—BMC Uppsala University Box 576 75123 Uppsala Sweden
| | - Swarna K. Baddigam
- Department of Chemistry—BMC Uppsala University Box 576 75123 Uppsala Sweden
| | | | - Andreas Orthaber
- Department of Chemistry—Ångström Laboratories Uppsala University Box 523 75120 Uppsala Sweden
| | - Paul J. Gates
- School of Chemistry University of Bristol Cantock's Close, Clifton Bristol BS8 1TS UK
| | - Lukasz T. Pilarski
- Department of Chemistry—BMC Uppsala University Box 576 75123 Uppsala Sweden
| |
Collapse
|
22
|
Li G, Shen G, Fang X, Yang YF, Zhan F, Zheng J, Lou W, Zhang Q, She Y. Phosphorescent Tetradentate Platinum(II) Complexes Containing Fused 6/5/5 or 6/5/6 Metallocycles. Inorg Chem 2020; 59:18109-18121. [DOI: 10.1021/acs.inorgchem.0c02569] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Guijie Li
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People’s Republic of China
| | - Gang Shen
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People’s Republic of China
| | - Xiaoli Fang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People’s Republic of China
| | - Yun-Fang Yang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People’s Republic of China
| | - Feng Zhan
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People’s Republic of China
| | - Jianbing Zheng
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People’s Republic of China
| | - Weiwei Lou
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People’s Republic of China
| | - Qisheng Zhang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
| | - Yuanbin She
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, People’s Republic of China
| |
Collapse
|
23
|
To WP, Wan Q, Tong GSM, Che CM. Recent Advances in Metal Triplet Emitters with d6, d8, and d10 Electronic Configurations. TRENDS IN CHEMISTRY 2020. [DOI: 10.1016/j.trechm.2020.06.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
|
24
|
Pinter P, Soellner J, Strassner T. Heteroleptic Cyclometalated NHC Iridium(III) complex with a bulky acetylacetonate: Photophysics of an unexplored class of compounds. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121251] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
25
|
Phosphorescence properties of anionic cyclometalated platinum(II) complexes with fluorine-substituted tridentate diphenylpyridine in the solid state. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2019.137024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
26
|
Feuerstein W, Breher F. Synthetic access to a phosphorescent non-palindromic pincer complex of palladium by a double oxidative addition – comproportionation sequence. Chem Commun (Camb) 2020; 56:12589-12592. [DOI: 10.1039/d0cc04065g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
A highly phosphorescent non-palindromic (C^C^N) palladium complex may be prepared by means of a double oxidative addition – comproportionation sequence, which is a new approach for the synthesis of non-palindromic pincer complexes.
Collapse
Affiliation(s)
- Wolfram Feuerstein
- Karlsruhe Institute of Technology (KIT)
- Institute of Inorganic Chemistry
- Division Molecular Chemistry
- 76131 Karlsruhe
- Germany
| | - Frank Breher
- Karlsruhe Institute of Technology (KIT)
- Institute of Inorganic Chemistry
- Division Molecular Chemistry
- 76131 Karlsruhe
- Germany
| |
Collapse
|
27
|
Lee CH, Tang MC, Kong FKW, Cheung WL, Ng M, Chan MY, Yam VWW. Isomeric Tetradentate Ligand-Containing Cyclometalated Gold(III) Complexes. J Am Chem Soc 2019; 142:520-529. [PMID: 31885257 DOI: 10.1021/jacs.9b11587] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A simple one-pot two bond-forming reaction for the rapid construction of cyclometalated gold(III) complexes with fully π-conjugated tetradentate ligand is reported. The coupling of the bifunctional gold(III) precursor with the bifunctional aromatic compound has led to the formation of two regioisomers with either C- or N-coordination. Through monitoring by high-throughput high performance liquid chromatography, the regioselectivity of the reaction has been effectively tuned toward the formation of a single isomer, allowing easy separation of the metal complexes. The structures of the complexes have been determined by X-ray crystallography, and the photophysical, electrochemical, and electroluminescence (EL) studies have been carried out. Computational study has been performed to provide insights into the nature of the excited states. Isomeric effect has been shown to have a significant influence on the EL behavior of the organic light-emitting devices.
Collapse
Affiliation(s)
- Chin-Ho Lee
- Institute of Molecular Functional Materials and Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , P. R. China
| | - Man-Chung Tang
- Institute of Molecular Functional Materials and Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , P. R. China
| | - Fred Ka-Wai Kong
- Institute of Molecular Functional Materials and Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , P. R. China
| | - Wai-Lung Cheung
- Institute of Molecular Functional Materials and Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , P. R. China
| | - Maggie Ng
- Institute of Molecular Functional Materials and Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , P. R. China
| | - Mei-Yee Chan
- Institute of Molecular Functional Materials and Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , P. R. China
| | - Vivian Wing-Wah Yam
- Institute of Molecular Functional Materials and Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , P. R. China
| |
Collapse
|
28
|
Pinter P, Soellner J, Strassner T. Sky-Blue Triplet Emitters with Cyclometalated Imidazopyrazine-Based NHC-Ligands and Aromatic Bulky Acetylacetonates. Chemistry 2019; 25:14495-14499. [PMID: 31596521 DOI: 10.1002/chem.201903074] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 08/01/2019] [Indexed: 01/27/2023]
Abstract
Platinum(II) complexes with an N-heterocyclic carbene and a cyclometalating phenyl ligand (C^C*) are excellent candidates as efficient blue triplet emitters for OLED applications. The electronic and photophysical properties of these complexes can be fine-tuned with the objective to increase the quantum yields and lower the phosphorescence decay times. We found that platinum complexes with an imidazopyrazine C^C* ligand and bulky acetylacetonates are sky-blue triplet emitters, characterised by an almost unitary quantum yield and short phosphorescence decay times.
Collapse
Affiliation(s)
- Piermaria Pinter
- Physikalische Organische Chemie, Technische Universität Dresden, 01069, Dresden, Germany
| | - Johannes Soellner
- Physikalische Organische Chemie, Technische Universität Dresden, 01069, Dresden, Germany
| | - Thomas Strassner
- Physikalische Organische Chemie, Technische Universität Dresden, 01069, Dresden, Germany
| |
Collapse
|
29
|
Li G, Chen Q, Zheng J, Wang Q, Zhan F, Lou W, Yang YF, She Y. Metal-Assisted Delayed Fluorescent Pd(II) Complexes and Phosphorescent Pt(II) Complex Based on [1,2,4]Triazolo[4,3-a]pyridine-Containing Ligands: Synthesis, Characterization, Electrochemistry, Photophysical Studies, and Application. Inorg Chem 2019; 58:14349-14360. [DOI: 10.1021/acs.inorgchem.9b01617] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Guijie Li
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Qidong Chen
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Jianbing Zheng
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Qunmin Wang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Feng Zhan
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Weiwei Lou
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Yun-Fang Yang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Yuanbin She
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| |
Collapse
|
30
|
Fleetham T, Golden JH, Idris M, Hau HM, Muthiah Ravinson DS, Djurovich PI, Thompson ME. Tuning State Energies for Narrow Blue Emission in Tetradentate Pyridyl-Carbazole Platinum Complexes. Inorg Chem 2019; 58:12348-12357. [DOI: 10.1021/acs.inorgchem.9b01888] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tyler Fleetham
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Jessica H. Golden
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Muazzam Idris
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Han-Ming Hau
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | | | - Peter I. Djurovich
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Mark E. Thompson
- Department of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| |
Collapse
|
31
|
Molina N, Cnudde M, Guadix JA, Perez-Pomares JM, Strassert CA, Vida Y, Perez-Inestrosa E. Platinum-Doped Dendritic Structure as a Phosphorescent Label for Bacteria in Two-Photon Excitation Microscopy. ACS OMEGA 2019; 4:13027-13033. [PMID: 31460429 PMCID: PMC6704438 DOI: 10.1021/acsomega.9b00639] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 06/19/2019] [Indexed: 05/07/2023]
Abstract
Herein, we present a water-soluble dendritric Pt(II) complex as a phosphorescent label for bacterial cells. The dendritic moiety endows the Pt(II) complex with unique properties such as water solubility, shielding from quenching by dioxygen, and binding to bacterial surfaces. The new biosensor was employed for two-photon excitation microscopy, and the binding was confirmed by electron microscopy, which demonstrates that such hybrid arrays can provide orthogonal yet complementary readouts.
Collapse
Affiliation(s)
- Noemi Molina
- Departamento
de Química Orgánica, Facultad de Ciencias, Universidad de Málaga—IBIMA, Campus de Teatinos s/n, 29071 Málaga, Spain
- Centro
Andaluz de Nanomedicina y Biotecnología (BIONAND), Junta de
Andalucía, Universidad de Málaga, C/ Severo Ochoa 35, 29590 Campanillas (Málaga), Spain
| | - Marvin Cnudde
- CeNTech—CiMIC—Institut
für Anorganische und Analytische Chemie, W. W.-Universität
Münster, Heisenbergstr. 11, D-48149 Münster, Germany
| | - Juan A. Guadix
- Centro
Andaluz de Nanomedicina y Biotecnología (BIONAND), Junta de
Andalucía, Universidad de Málaga, C/ Severo Ochoa 35, 29590 Campanillas (Málaga), Spain
- Departamento
de Biología Animal, Facultad de Ciencias, Universidad de Málaga—IBIMA, Campus de Teatinos s/n, 29071 Málaga, Spain
| | - Jose M. Perez-Pomares
- Centro
Andaluz de Nanomedicina y Biotecnología (BIONAND), Junta de
Andalucía, Universidad de Málaga, C/ Severo Ochoa 35, 29590 Campanillas (Málaga), Spain
- Departamento
de Biología Animal, Facultad de Ciencias, Universidad de Málaga—IBIMA, Campus de Teatinos s/n, 29071 Málaga, Spain
| | - Cristian A. Strassert
- CeNTech—CiMIC—Institut
für Anorganische und Analytische Chemie, W. W.-Universität
Münster, Heisenbergstr. 11, D-48149 Münster, Germany
- E-mail: (C.A.S.)
| | - Yolanda Vida
- Departamento
de Química Orgánica, Facultad de Ciencias, Universidad de Málaga—IBIMA, Campus de Teatinos s/n, 29071 Málaga, Spain
- Centro
Andaluz de Nanomedicina y Biotecnología (BIONAND), Junta de
Andalucía, Universidad de Málaga, C/ Severo Ochoa 35, 29590 Campanillas (Málaga), Spain
- E-mail: (Y.V.)
| | - Ezequiel Perez-Inestrosa
- Departamento
de Química Orgánica, Facultad de Ciencias, Universidad de Málaga—IBIMA, Campus de Teatinos s/n, 29071 Málaga, Spain
- Centro
Andaluz de Nanomedicina y Biotecnología (BIONAND), Junta de
Andalucía, Universidad de Málaga, C/ Severo Ochoa 35, 29590 Campanillas (Málaga), Spain
- E-mail: (E.P.-I.)
| |
Collapse
|
32
|
Rajabi S, Jamali S, Naseri S, Jamjah A, Kia R, Samouei H, Mastrorilli P, Shahsavari HR, Raithby PR. Pt–M (M = Au and Tl) Dative Bonds Using Bis(cyclometalated)platinum(II) Complexes. Organometallics 2019. [DOI: 10.1021/acs.organomet.8b00907] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sheida Rajabi
- Chemistry Department, Sharif University of Technology, P.O. Box 11155-3516, Tehran 1458889694, Iran
| | - Sirous Jamali
- Chemistry Department, Sharif University of Technology, P.O. Box 11155-3516, Tehran 1458889694, Iran
| | - Soroosh Naseri
- Chemistry Department, Sharif University of Technology, P.O. Box 11155-3516, Tehran 1458889694, Iran
| | - Ali Jamjah
- Chemistry Department, Sharif University of Technology, P.O. Box 11155-3516, Tehran 1458889694, Iran
| | - Reza Kia
- Chemistry Department, Sharif University of Technology, P.O. Box 11155-3516, Tehran 1458889694, Iran
| | - Hamidreza Samouei
- Department of Chemistry, Texas A&M University, P.O. Box 30012, College Station, Texas 77842-3012, United States
| | | | - Hamid R. Shahsavari
- Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731, Iran
| | - Paul R. Raithby
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
| |
Collapse
|
33
|
Pinter P, Strassner T. Prediction of the Efficiency of Phosphorescent Emitters: A Theoretical Analysis of Triplet States in Platinum Blue Emitters. Chemistry 2019; 25:4202-4205. [DOI: 10.1002/chem.201806174] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Piermaria Pinter
- Department Chemie und Lebensmittelchemie, Professur für Physikalische Organische ChemieTechnische Universität Dresden 01069 Germany
| | - Thomas Strassner
- Department Chemie und Lebensmittelchemie, Professur für Physikalische Organische ChemieTechnische Universität Dresden 01069 Germany
| |
Collapse
|
34
|
Lee C, Zaen R, Park KM, Lee KH, Lee JY, Kang Y. Blue Phosphorescent Platinum Complexes Based on Tetradentate Bipyridine Ligands and Their Application to Organic Light-Emitting Diodes (OLEDs). Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00659] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Chiheon Lee
- Division of Science Education, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Rena Zaen
- Division of Science Education, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Ki-Min Park
- Research Institute of Natural Science, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Kyung Hyung Lee
- School of Chemical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Jun Yeob Lee
- School of Chemical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Youngjin Kang
- Division of Science Education, Kangwon National University, Chuncheon 24341, Republic of Korea
| |
Collapse
|
35
|
Wang X, Zhang J, Zhu X, Ren T, Wang L. Influence of different ancillary ligand on the phosphorescent properties of platinum(II) complexes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 204:340-347. [PMID: 29957412 DOI: 10.1016/j.saa.2018.06.071] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 06/16/2018] [Accepted: 06/18/2018] [Indexed: 06/08/2023]
Abstract
In past two decades, lots of bidentate Pt(II) complexes are developed as potential organic light emitting diodes due to their simple synthetic process. The relative low quantum efficiency is one of the major blocks for their applications. Two new heteroleptic Pt(II) complexes bearing an n-hexyloxy substituted phenyllepidine-based ligand and either a picolinate (pic) (1) or acetylacetonate (acac) (2) ancillary ligand are synthesized as orange-red-emitter by Wawrzinek and coauthors. The quantum efficiency of 2 is much larger than that of 1 indicating that the variation of ancillary ligand has a great effect on the performance. Inspired by it, other two new bidentate Pt(II) complexes are theoretically designed with the same primary ligand along with pyrazolone (pzl) (3) or N-substituted carbazole (NCaz) (4) ancillary ligand. The phosphorescent properties are explored by density functional theory (DFT) and time dependent DFT (TDDFT) methods with the ultimate goal to explore the influence of ancillary ligand. Moreover, the emission rule is confirmed. Finally, the quantum yield is estimated according to the radiative rate constant (kr) and nonradiative rate constant (knr). The smaller knr is the vital item to determine the high quantum yield.
Collapse
Affiliation(s)
- Xin Wang
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, PR China; College of Chemistry and Chemical Engineering, Zhoukou Normal University, Zhoukou, Henan 466001, PR China
| | - Jingshun Zhang
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, PR China
| | - Xinrui Zhu
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, PR China
| | - Tiegang Ren
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, PR China.
| | - Li Wang
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, PR China.
| |
Collapse
|
36
|
Song C, Tang J, Li J, Wang Z, Li P, Zhang H. Quantum-Chemical Insights into the Phosphorescence Efficiencies of Blue-Emitting Platinum Complexes with Phenylene-Bridged Pincer Ligands. Inorg Chem 2018; 57:12174-12186. [DOI: 10.1021/acs.inorgchem.8b01828] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chongping Song
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Jia Tang
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Jiaqi Li
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Zhixiang Wang
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Ping Li
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Houyu Zhang
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry, Jilin University, Changchun 130012, P. R. China
| |
Collapse
|
37
|
Huo S. Platinum in Chemistry: An Adventure from Phosphorescent Materials to Catalytic C−H Functionalization. CHEM REC 2018; 18:1583-1595. [DOI: 10.1002/tcr.201800019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 05/18/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Shouquan Huo
- Department of ChemistryEast Carolina University Greenville, North Carolina 27858 USA
| |
Collapse
|
38
|
You C, Xia F, Zhao Y, Zhang Y, Sheng Y, Wu Y, Hang XC, Chen F, Ma H, Shen K, Sun Z, Ueba T, Kera S, Zhang C, Zhang H, Chen ZK, Huang W. Probing Triplet Excited States and Managing Blue Light Emission of Neutral Tetradentate Platinum(II) Complexes. J Phys Chem Lett 2018; 9:2285-2292. [PMID: 29664638 DOI: 10.1021/acs.jpclett.8b00797] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The structural and photophysical properties of tetradentate Pt(ppzOppz), Pt(ppzOpopy), Pt(ppzOczpy), and Pt(czpyOczpy) have been experimentally and theoretically explored. Single-crystal diffraction measurements provided accurate structural information. Electrochemical and photophysical characterizations revealed internal electronic energy levels in ground and excited states. (Time-dependent) Density functional theory calculation revealed electron distributions in transition processes of S0 → S1 and S1 → T1 → S0. Electronic transition study indicated that Pt(ppzOppz) demonstrated mixed MLCT/LC states and Pt(czpyOczpy) showed MLCT-dominated states in S1 and T1. Both Pt(ppzOpopy) and Pt(ppzOczpy) presented strong delocalized spin transition (DST) during intersystem crossing. Upon frame modification of Pt(ppzOczpy), we found that their S1 and T1 can be independently manipulated. These blue emitters showed a tunable and narrow emission band (the narrowest fwhm was 19 nm) with luminescence efficiency as high as 86%. The findings of the DST transition mode in the neutral Pt(II) complexes provide guidance for rational design of novel phosphorescent materials.
Collapse
Affiliation(s)
- Cong You
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211800 , China
| | - Fang Xia
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211800 , China
| | - Yue Zhao
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211800 , China
| | - Yin Zhang
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211800 , China
| | - Yongjian Sheng
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211800 , China
| | - Yipei Wu
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211800 , China
| | - Xiao-Chun Hang
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211800 , China
| | - Fei Chen
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211800 , China
| | - Huili Ma
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211800 , China
| | - Kang Shen
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211800 , China
| | - Zhengyi Sun
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211800 , China
| | - Takahiro Ueba
- Department of Photo-Molecular Science , Institute for Molecular Science , Okazaki , Aichi 444-8585 , Japan
| | - Satoshi Kera
- Department of Photo-Molecular Science , Institute for Molecular Science , Okazaki , Aichi 444-8585 , Japan
| | - Cong Zhang
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211800 , China
| | - Honghai Zhang
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211800 , China
| | - Zhi-Kuan Chen
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211800 , China
| | - Wei Huang
- Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211800 , China
- Shaanxi Institute of Flexible Electronics (SIFE) , Northwestern Polytechnical University (NPU) , 127 West Youyi Road , Xi'an 710072 , China
| |
Collapse
|
39
|
Pittkowski R, Strassner T. Enhanced quantum yields by sterically demanding aryl-substituted β-diketonate ancillary ligands. Beilstein J Org Chem 2018; 14:664-671. [PMID: 29623129 PMCID: PMC5870149 DOI: 10.3762/bjoc.14.54] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Accepted: 02/28/2018] [Indexed: 12/14/2022] Open
Abstract
Luminescent organometallic platinum(II) compounds are of interest as phosphors for organic light emitting devices. Their emissive properties can be tuned by variation of the ligands or by specific electron-withdrawing or electron-donating substituents. Different ancillary ligands can have a profound impact on the emission color and emission efficiency of these complexes. We studied the influence of sterically hindered, aryl-substituted β-diketonates on the emission properties of C^C* cyclometalated complexes, employing the unsubstituted methyl-phenyl-imidazolium ligand. The quantum yield was significantly enhanced by changing the auxiliary ligand from acetylacetonate, where the corresponding platinum(II) complex shows only a very weak emission, to mesityl (mes) or duryl (dur) substituted acetylacetonates. The new complexes show very efficient emission with quantum yields >70% in the sky-blue spectral region (480 nm) and short decay times (<3 μs).
Collapse
Affiliation(s)
- Rebecca Pittkowski
- Physical Organic Chemistry, Technische Universität Dresden, Bergstraße, 01069 Dresden, Germany
| | - Thomas Strassner
- Physical Organic Chemistry, Technische Universität Dresden, Bergstraße, 01069 Dresden, Germany
| |
Collapse
|
40
|
Zuo K, Luo Y, Sun X, Shen W, Tang D, Hu J. Theoretical insight into the photodeactivation pathway of the tetradentate Pt(II) complex: The π-conjugation effect. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4220] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Ke Zuo
- College of Pharmacy and Biological Engineering, Sichuan Industrial Institute of Antibiotics, Key Laboratory of Medicinal and Edible Plants Resources Development of Sichuan Education Department; Chengdu University; Chengdu, Sichuan 610106 P. R. China
| | - Yafei Luo
- International Academy of Targeted Therapeutics and Innovation; Chongqing University of Arts and Sciences; Chongqing 402160 P. R. China
| | - Xin Sun
- College of Pharmacy and Biological Engineering, Sichuan Industrial Institute of Antibiotics, Key Laboratory of Medicinal and Edible Plants Resources Development of Sichuan Education Department; Chengdu University; Chengdu, Sichuan 610106 P. R. China
| | - Wei Shen
- School of Chemistry and Chemical Engineering; Southwest University; Chongqing 400715 P. R. China
| | - Dianyong Tang
- International Academy of Targeted Therapeutics and Innovation; Chongqing University of Arts and Sciences; Chongqing 402160 P. R. China
| | - Jianping Hu
- College of Pharmacy and Biological Engineering, Sichuan Industrial Institute of Antibiotics, Key Laboratory of Medicinal and Edible Plants Resources Development of Sichuan Education Department; Chengdu University; Chengdu, Sichuan 610106 P. R. China
| |
Collapse
|
41
|
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.
Collapse
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
| | | |
Collapse
|
42
|
Maroń A, Czerwińska K, Machura B, Raposo L, Roma-Rodrigues C, Fernandes AR, Małecki JG, Szlapa-Kula A, Kula S, Krompiec S. Spectroscopy, electrochemistry and antiproliferative properties of Au(iii), Pt(ii) and Cu(ii) complexes bearing modified 2,2′:6′,2′′-terpyridine ligands. Dalton Trans 2018; 47:6444-6463. [DOI: 10.1039/c8dt00558c] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Impact of the metal centre and the substituent incorporated into a terpy framework.
Collapse
|
43
|
Jamali S, Kermanshahian S. Synthesis, characterization and optical properties of a new cationic cyclometalated platinum(ii) complex. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3832] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Sirous Jamali
- Chemistry Department; Sharif University of Technology; Tehran Iran
| | | |
Collapse
|
44
|
Fleetham T, Ji Y, Huang L, Fleetham TS, Li J. Efficient and stable single-doped white OLEDs using a palladium-based phosphorescent excimer. Chem Sci 2017; 8:7983-7990. [PMID: 29568445 PMCID: PMC5853771 DOI: 10.1039/c7sc02512b] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 09/09/2017] [Indexed: 11/21/2022] Open
Abstract
A tetradentate Pd(ii) complex, Pd3O3, which exhibits highly efficient excimer emission is synthesized and characterized. Pd3O3 can achieve blue emission despite using phenyl-pyridine emissive ligands which have been a mainstay of stable green and red phosphorescent emitter designs, making Pd3O3 a good candidate for stable blue or white OLEDs. Pd3O3 exhibits strong and efficient phosphorescent excimer emission expanding the excimer based white OLEDs beyond the sole class of Pt complexes. Devices of Pd3O3 demonstrate peak external quantum efficiencies as high as 24.2% and power efficiencies of 67.9 Lm per W for warm white devices. Furthermore, Pd3O3 devices in a carefully designed stable structure achieved a device operational lifetime of nearly 3000 h at 1000 cd m-2 without any outcoupling enhancement while simultaneously achieving peak external quantum efficiencies of 27.3% and power efficiencies over 81 Lm per W.
Collapse
Affiliation(s)
- Tyler Fleetham
- Materials Science and Engineering , Arizona State University , Tempe , AZ 85287 , USA .
| | - Yunlong Ji
- Materials Science and Engineering , Arizona State University , Tempe , AZ 85287 , USA .
| | - Liang Huang
- Materials Science and Engineering , Arizona State University , Tempe , AZ 85287 , USA .
| | - Trenten S Fleetham
- Materials Science and Engineering , Arizona State University , Tempe , AZ 85287 , USA .
| | - Jian Li
- Materials Science and Engineering , Arizona State University , Tempe , AZ 85287 , USA .
| |
Collapse
|
45
|
Li G, Zhao X, Fang K, Li J, She Y. CuCl-Catalyzed Hydroxylation of N-Heteroarylcarbazole Bromide: Approach for the Preparation of N-Heteroarylcarbazolyl Phenols and Its Application in the Synthesis of Phosphorescent Emitters. J Org Chem 2017; 82:8634-8644. [DOI: 10.1021/acs.joc.7b01568] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Guijie Li
- State
Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology,
College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Xiangdong Zhao
- State
Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology,
College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Kun Fang
- State
Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology,
College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Jian Li
- Department
of Materials Science and Engineering, Arizona State University, Tempe, Arizona 85284, United States
| | - Yuanbin She
- State
Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology,
College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| |
Collapse
|
46
|
Lee CH, Tang MC, Wong YC, Chan MY, Yam VWW. Sky-Blue-Emitting Dendritic Alkynylgold(III) Complexes for Solution-Processable Organic Light-Emitting Devices. J Am Chem Soc 2017; 139:10539-10550. [DOI: 10.1021/jacs.7b05872] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Chin-Ho Lee
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Man-Chung Tang
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Yi-Chun Wong
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Mei-Yee Chan
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Vivian Wing-Wah Yam
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| |
Collapse
|
47
|
Li G, Wolfe A, Brooks J, Zhu ZQ, Li J. Modifying Emission Spectral Bandwidth of Phosphorescent Platinum(II) Complexes Through Synthetic Control. Inorg Chem 2017. [DOI: 10.1021/acs.inorgchem.7b00961] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Guijie Li
- Department
of Materials Science and Engineering, Arizona State University, Tempe, Arizona 85284, United States
- College
of Chemical Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, China
| | - Alicia Wolfe
- Department
of Materials Science and Engineering, Arizona State University, Tempe, Arizona 85284, United States
| | - Jason Brooks
- Universal Display Corporation, 375 Phillips Boulevard, Ewing, New Jersey 08618, United States
| | - Zhi-Qiang Zhu
- Department
of Materials Science and Engineering, Arizona State University, Tempe, Arizona 85284, United States
| | - Jian Li
- Department
of Materials Science and Engineering, Arizona State University, Tempe, Arizona 85284, United States
| |
Collapse
|
48
|
Zhang W, Wang J, Xu Y, Li W, Shen W. Fine tuning phosphorescent properties of platinum complexes via different N -heterocyclic-based CˆNˆN ligands. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.02.029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
49
|
Fuertes S, Chueca AJ, Arnal L, Martín A, Giovanella U, Botta C, Sicilia V. Heteroleptic Cycloplatinated N-Heterocyclic Carbene Complexes: A New Approach to Highly Efficient Blue-Light Emitters. Inorg Chem 2017; 56:4829-4839. [PMID: 28387513 DOI: 10.1021/acs.inorgchem.6b02826] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
New heteroleptic compounds of platinum(II)-containing cyclometalated N-heterocyclic carbenes, [PtCl(R-C^C*)(PPh3)] [R-CH^C*-κC* = 3-methyl-1-(naphthalen-2-yl)-1H-imidazol-2-ylidene (R-C = Naph; 1A), 1-[4-(ethoxycarbonyl)phenyl]-3-methyl-1H-imidazol-2-ylidene (R = CO2Et; 1B), and [Pt(R-C^C*)(py)(PPh3)]PF6 (py = pyridine; R-C = Naph, 2A; R = CO2Et, 2B], have been prepared and fully characterized. All of them were obtained as the trans-(C*,PPh3) isomer in high yields. The selectivity of their synthesis has been explained in terms of the degree of transphobia (T) of pairs of ligands in trans positions. X-ray diffraction studies on both 2A and 2B revealed that only in 2A, containing a C^C* with a more extended π system, do the molecules assemble themselves into head-to-tail pairs through intermolecular π···π contacts. The photophysical properties of 2A and 2B and those of the related compounds [Pt(NC-C^C*)(PPh3)L]PF6 [NC-CH^C*-κC* = 1-(4-cyanophenyl)-3-methyl-1H-imidazol-2-ylidene; L = pyridine (py; 2C), 2,6-dimethylphenylisocyanide (CNXyl; 3C), and 2-mercapto-1-methylimidazole (MMI; 4C)] have been examined to analyze the influence of the R substituent on R-C^C* (R-C = Naph; R = CO2Et, CN) and that of the ancillary ligands (L) on them. Experimental data and time-dependent density functional theory calculations showed the similarity of the electronic features associated with R-C^C* (R = CN, CO2Et) and their difference with respect to R-C^C* (R-C = Naph). All of the compounds are very efficient blue emitters in poly(methyl methacrylate) films under an argon atmosphere, with QY values ranging from 68% (2B) to 93% (2C). In the solid state, the color of the emission changes to yellowish-orange for compounds 2A (λmax = 600 nm) and 3C (λmax = 590 nm) because of the formation of aggregates through intermolecular π···π interactions. 2C and 3C were chosen to fabricate fully solution-processed electroluminescent devices with blue-light (2C), yellow-orange-light (3C), and white-light (mixtures of 2C and 3C) emission from neat films of the compounds as emitting layers.
Collapse
Affiliation(s)
- Sara Fuertes
- Departamento de Química Inorgánica, Facultad de Ciencias, Instituto de Síntesis Química y Catálisis Homogénea, CSIC, Universidad de Zaragoza , Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Andrés J Chueca
- Departamento de Química Inorgánica, Facultad de Ciencias, Instituto de Síntesis Química y Catálisis Homogénea, CSIC, Universidad de Zaragoza , Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Lorenzo Arnal
- Departamento de Química Inorgánica, Facultad de Ciencias, Instituto de Síntesis Química y Catálisis Homogénea, CSIC, Universidad de Zaragoza , Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Antonio Martín
- Departamento de Química Inorgánica, Facultad de Ciencias, Instituto de Síntesis Química y Catálisis Homogénea, CSIC, Universidad de Zaragoza , Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Umberto Giovanella
- Istituto per lo Studio delle Macromolecole, Consiglio Nazionale delle Ricerche (CNR) , Via Corti 12, 20133 Milano, Italy
| | - Chiara Botta
- Istituto per lo Studio delle Macromolecole, Consiglio Nazionale delle Ricerche (CNR) , Via Corti 12, 20133 Milano, Italy
| | - Violeta Sicilia
- Departamento de Química Inorgánica, Escuela de Ingeniería y Arquitectura de Zaragoza, Instituto de Síntesis Química y Catálisis Homogénea, CSIC, Universidad de Zaragoza , Campus Río Ebro, Edificio Torres Quevedo, 50018 Zaragoza, Spain
| |
Collapse
|
50
|
Fleetham T, Li G, Li J. Phosphorescent Pt(II) and Pd(II) Complexes for Efficient, High-Color-Quality, and Stable OLEDs. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1601861. [PMID: 27859829 DOI: 10.1002/adma.201601861] [Citation(s) in RCA: 189] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 08/13/2016] [Indexed: 06/06/2023]
Abstract
Phosphorescent organic light-emitting diodes (OLEDs) are leading candidates for next-generation displays and solid-state lighting technologies. Much of the academic and commercial pursuits in phosphorescent OLEDs have been dominated by Ir(III) complexes. Over the past decade recent developments have enabled square planar Pt(II) and Pd(II) complexes to meet or exceed the performance of Ir complexes in many aspects. In particular, the development of N-heterocyclic carbene-based emitters and tetradentate cyclometalated Pt and Pd complexes have significantly improved the emission efficiency and reduced their radiative lifetimes making them competitive with the best reported Ir complexes. Furthermore, their unique and diverse molecular design possibilities have enabled exciting photophysical attributes including narrower emission spectra, excimer -based white emission, and thermally activated delayed fluorescence. These developments have enabled the fabrication of efficient and "pure" blue OLEDs, single-doped white devices with EQEs of over 25% and high CRI, and device operational lifetimes which show early promise that square planar metal complexes can be stable enough for commercialization. These accomplishments have brought Pt complexes to the forefront of academic research. The molecular design strategies, photophysical characteristics, and device performance resulting from the major advancements in emissive Pt and Pd square planar complexes are discussed.
Collapse
Affiliation(s)
- Tyler Fleetham
- Material Science and Engineering, Arizona State University, Tempe, AZ, 85287, USA
| | - Guijie Li
- Material Science and Engineering, Arizona State University, Tempe, AZ, 85287, USA
| | - Jian Li
- Material Science and Engineering, Arizona State University, Tempe, AZ, 85287, USA
| |
Collapse
|