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Powers-Riggs NE, Birgisson BO, Raj SL, Biasin E, Lenzen P, Zederkof DB, Haubro M, Tveiten DKV, Hartsock RW, van Driel TB, Kunnus K, Chollet M, Robinson JS, Nelson S, Forbes R, Haldrup K, Pedersen KS, Levi G, Ougaard Dohn A, Jónsson H, Mo Ller KB, Natan A, Nielsen MM, Gaffney KJ. Characterization of Deformational Isomerization Potential and Interconversion Dynamics with Ultrafast X-ray Solution Scattering. J Am Chem Soc 2024; 146:13962-13973. [PMID: 38727611 DOI: 10.1021/jacs.4c00817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2024]
Abstract
Dimeric complexes composed of d8 square planar metal centers and rigid bridging ligands provide model systems to understand the interplay between attractive dispersion forces and steric strain in order to assist the development of reliable methods to model metal dimer complexes more broadly. [Ir2 (dimen)4]2+ (dimen = para-diisocyanomenthane) presents a unique case study for such phenomena, as distortions of the optimal structure of a ligand with limited conformational flexibility counteract the attractive dispersive forces from the metal and ligand to yield a complex with two ground state deformational isomers. Here, we use ultrafast X-ray solution scattering (XSS) and optical transient absorption spectroscopy (OTAS) to reveal the nature of the equilibrium distribution and the exchange rate between the deformational isomers. The two ground state isomers have spectrally distinct electronic excitations that enable the selective excitation of one isomer or the other using a femtosecond duration pulse of visible light. We then track the dynamics of the nonequilibrium depletion of the electronic ground state population─often termed the ground state hole─with ultrafast XSS and OTAS, revealing a restoration of the ground state equilibrium in 2.3 ps. This combined experimental and theoretical study provides a critical test of various density functional approximations in the description of bridged d8-d8 metal complexes. The results show that density functional theory calculations can reproduce the primary experimental observations if dispersion interactions are added, and a hybrid functional, which includes exact exchange, is used.
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Affiliation(s)
- Natalia E Powers-Riggs
- PULSE Institute, SLAC Accelerator National Laboratory, Stanford University, Stanford, California 94025, United States
| | - Benedikt O Birgisson
- Science Institute and Faculty of Physical Sciences, VR-III, University of Iceland, 107 Reykjavík, Iceland
| | - Sumana L Raj
- PULSE Institute, SLAC Accelerator National Laboratory, Stanford University, Stanford, California 94025, United States
| | - Elisa Biasin
- PULSE Institute, SLAC Accelerator National Laboratory, Stanford University, Stanford, California 94025, United States
| | - Philipp Lenzen
- Department of Physics, Technical University of Denmark, 2800 Lyngby, Denmark
| | | | - Morten Haubro
- Department of Physics, Technical University of Denmark, 2800 Lyngby, Denmark
| | - Dagrún K V Tveiten
- Science Institute and Faculty of Physical Sciences, VR-III, University of Iceland, 107 Reykjavík, Iceland
| | - Robert W Hartsock
- PULSE Institute, SLAC Accelerator National Laboratory, Stanford University, Stanford, California 94025, United States
| | - Tim B van Driel
- LCLS, SLAC National Laboratory, Menlo Park, California 94025, United States
| | - Kristjan Kunnus
- LCLS, SLAC National Laboratory, Menlo Park, California 94025, United States
| | - Matthieu Chollet
- LCLS, SLAC National Laboratory, Menlo Park, California 94025, United States
| | - Joseph S Robinson
- LCLS, SLAC National Laboratory, Menlo Park, California 94025, United States
| | - Silke Nelson
- LCLS, SLAC National Laboratory, Menlo Park, California 94025, United States
| | - Ruaridh Forbes
- LCLS, SLAC National Laboratory, Menlo Park, California 94025, United States
| | - Kristoffer Haldrup
- Department of Physics, Technical University of Denmark, 2800 Lyngby, Denmark
| | - Kasper S Pedersen
- Department of Chemistry, Technical University of Denmark, 2800 Lyngby, Denmark
| | - Gianluca Levi
- Science Institute and Faculty of Physical Sciences, VR-III, University of Iceland, 107 Reykjavík, Iceland
| | - Asmus Ougaard Dohn
- PULSE Institute, SLAC Accelerator National Laboratory, Stanford University, Stanford, California 94025, United States
- Department of Physics, Technical University of Denmark, 2800 Lyngby, Denmark
| | - Hannes Jónsson
- Science Institute and Faculty of Physical Sciences, VR-III, University of Iceland, 107 Reykjavík, Iceland
| | | | - Adi Natan
- PULSE Institute, SLAC Accelerator National Laboratory, Stanford University, Stanford, California 94025, United States
| | | | - Kelly J Gaffney
- PULSE Institute, SLAC Accelerator National Laboratory, Stanford University, Stanford, California 94025, United States
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Zhang Y, Miao J, Xiong J, Li K, Yang C. Rigid Bridge-Confined Double-Decker Platinum(II) Complexes Towards High-Performance Red and Near-Infrared Electroluminescence. Angew Chem Int Ed Engl 2021; 61:e202113718. [PMID: 34734464 DOI: 10.1002/anie.202113718] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Indexed: 11/09/2022]
Abstract
A molecular design to high-performance red and near-infrared (NIR) organic light-emitting diodes (OLEDs) emitters remains demanding. Herein a series of dinuclear platinum(II) complexes featuring strong intramolecular Pt⋅⋅⋅Pt and π-π interactions has been developed by using N-deprotonated α-carboline as a bridging ligand. The complexes in doped thin films exhibit efficient red to NIR emission from short-lived (τ=0.9-2.1 μs) triplet metal-metal-to-ligand charge transfer (3 MMLCT) excited states. Red OLEDs demonstrate high maximum external quantum efficiencies (EQEs) of up to 23.3 % among the best PtII -complex-doped devices. The maximum EQE of 15.0 % and radiance of 285 W sr-1 m-2 for NIR OLEDs (λEL =725 nm) are unprecedented for devices based on discrete molecular emitters. Both red and NIR devices show very small efficiency roll-off at high brightness. Appealing operational lifetimes have also been revealed for the devices. This work sheds light on the potential of intramolecular metallophilicity for long-wavelength molecular emitters and electroluminescence.
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Affiliation(s)
- Youming Zhang
- College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518055, P.R. China
| | - Jingsheng Miao
- College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518055, P.R. China
| | - Jinfan Xiong
- College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518055, P.R. China
| | - Kai Li
- College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518055, P.R. China
| | - Chuluo Yang
- College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518055, P.R. China
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Yang J, Li K, Wang J, Sun S, Chi W, Wang C, Chang X, Zou C, To W, Li M, Liu X, Lu W, Zhang H, Che C, Chen Y. Controlling Metallophilic Interactions in Chiral Gold(I) Double Salts towards Excitation Wavelength‐Tunable Circularly Polarized Luminescence. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202000792] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jian‐Gong Yang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials & CAS-HKU Joint Laboratory on New MaterialsTechnical Institute of Physics and ChemistryChinese Academy of Sciences Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Kai Li
- Shenzhen Key Laboratory of Polymer Science and TechnologyCollege of Materials Science and EngineeringShenzhen University Shenzhen 518055 P. R. China
| | - Jian Wang
- Institute of Theoretical ChemistryCollege of ChemistryJilin University Changchun 130023 P. R. China
| | - Shanshan Sun
- Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong ProvinceDepartment of ChemistryShantou University Shantou 515031 P. R. China
| | - Weijie Chi
- Singapore University of Technology and Design 8 Somapah Road Singapore 487372 Singapore
| | - Chao Wang
- Singapore University of Technology and Design 8 Somapah Road Singapore 487372 Singapore
| | - Xiaoyong Chang
- Department of ChemistrySouthern University of Science and Technology Shenzhen 518055 P. R. China
| | - Chao Zou
- Department of ChemistrySouthern University of Science and Technology Shenzhen 518055 P. R. China
| | - Wai‐Pong To
- State Key Laboratory of Synthetic Chemistry & Department of ChemistryThe University of Hong Kong Pokfulam Road Hong Kong SAR P. R. China
| | - Ming‐De Li
- Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong ProvinceDepartment of ChemistryShantou University Shantou 515031 P. R. China
| | - Xiaogang Liu
- Singapore University of Technology and Design 8 Somapah Road Singapore 487372 Singapore
| | - Wei Lu
- Department of ChemistrySouthern University of Science and Technology Shenzhen 518055 P. R. China
| | - Hong‐Xing Zhang
- Institute of Theoretical ChemistryCollege of ChemistryJilin University Changchun 130023 P. R. China
| | - Chi‐Ming Che
- State Key Laboratory of Synthetic Chemistry & Department of ChemistryThe University of Hong Kong Pokfulam Road Hong Kong SAR P. R. China
| | - Yong Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials & CAS-HKU Joint Laboratory on New MaterialsTechnical Institute of Physics and ChemistryChinese Academy of Sciences Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
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Yang J, Li K, Wang J, Sun S, Chi W, Wang C, Chang X, Zou C, To W, Li M, Liu X, Lu W, Zhang H, Che C, Chen Y. Controlling Metallophilic Interactions in Chiral Gold(I) Double Salts towards Excitation Wavelength‐Tunable Circularly Polarized Luminescence. Angew Chem Int Ed Engl 2020; 59:6915-6922. [DOI: 10.1002/anie.202000792] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Indexed: 11/11/2022]
Affiliation(s)
- Jian‐Gong Yang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials & CAS-HKU Joint Laboratory on New MaterialsTechnical Institute of Physics and ChemistryChinese Academy of Sciences Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Kai Li
- Shenzhen Key Laboratory of Polymer Science and TechnologyCollege of Materials Science and EngineeringShenzhen University Shenzhen 518055 P. R. China
| | - Jian Wang
- Institute of Theoretical ChemistryCollege of ChemistryJilin University Changchun 130023 P. R. China
| | - Shanshan Sun
- Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong ProvinceDepartment of ChemistryShantou University Shantou 515031 P. R. China
| | - Weijie Chi
- Singapore University of Technology and Design 8 Somapah Road Singapore 487372 Singapore
| | - Chao Wang
- Singapore University of Technology and Design 8 Somapah Road Singapore 487372 Singapore
| | - Xiaoyong Chang
- Department of ChemistrySouthern University of Science and Technology Shenzhen 518055 P. R. China
| | - Chao Zou
- Department of ChemistrySouthern University of Science and Technology Shenzhen 518055 P. R. China
| | - Wai‐Pong To
- State Key Laboratory of Synthetic Chemistry & Department of ChemistryThe University of Hong Kong Pokfulam Road Hong Kong SAR P. R. China
| | - Ming‐De Li
- Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong ProvinceDepartment of ChemistryShantou University Shantou 515031 P. R. China
| | - Xiaogang Liu
- Singapore University of Technology and Design 8 Somapah Road Singapore 487372 Singapore
| | - Wei Lu
- Department of ChemistrySouthern University of Science and Technology Shenzhen 518055 P. R. China
| | - Hong‐Xing Zhang
- Institute of Theoretical ChemistryCollege of ChemistryJilin University Changchun 130023 P. R. China
| | - Chi‐Ming Che
- State Key Laboratory of Synthetic Chemistry & Department of ChemistryThe University of Hong Kong Pokfulam Road Hong Kong SAR P. R. China
| | - Yong Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials & CAS-HKU Joint Laboratory on New MaterialsTechnical Institute of Physics and ChemistryChinese Academy of Sciences Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
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Chen M, Wei C, Wu X, Khan M, Huang N, Zhang G, Li L. Metallogels self-assembled from linear rod-like platinum complexes: influence of the linkage. Chemistry 2015; 21:4213-7. [PMID: 25644237 DOI: 10.1002/chem.201406296] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Indexed: 12/18/2022]
Abstract
Two linear rod-like platinum complexes, which only differed in the linkage, were prepared. They both self-assemble into metallogels in nonpolar solvents; however, a very big contrast was observed. Unexpectedly, a much weaker gel was acquired upon replacing the ester linkage by an amide group. The intermolecular hydrogen bonding offered by the amide motif leads to a different stacking fashion and mechanism. The results demonstrated herein contribute to the rational design of metallogels as well as other functional supramolecular materials.
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Affiliation(s)
- Mingming Chen
- National Synchrotron Radiation Lab and College of Nuclear Science and Technology, University of Science and Technology of China, No. 96, JinZhai Road, Hefei, Anhui, 230026 (P. R. China), Fax: (+) 86-551-5141078
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