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Haldar R, Jakoby M, Kozlowska M, Rahman Khan M, Chen H, Pramudya Y, Richards BS, Heinke L, Wenzel W, Odobel F, Diring S, Howard IA, Lemmer U, Wöll C. Tuning Optical Properties by Controlled Aggregation: Electroluminescence Assisted by Thermally-Activated Delayed Fluorescence from Thin Films of Crystalline Chromophores. Chemistry 2020; 26:17016-17020. [PMID: 32894609 PMCID: PMC7839528 DOI: 10.1002/chem.202003712] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 09/06/2020] [Indexed: 11/09/2022]
Abstract
Several photophysical properties of chromophores depend crucially on intermolecular interactions. Thermally-activated delayed fluorescence (TADF) is often influenced by close packing of the chromophore assembly. In this context, the metal-organic framework (MOF) approach has several advantages: it can be used to steer aggregation such that the orientation within aggregated structures can be predicted using rational approaches. We demonstrate this design concept for a DPA-TPE (diphenylamine-tetraphenylethylene) chromophore, which is non-emissive in its solvated state due to vibrational quenching. Turning this DPA-TPE into a ditopic linker makes it possible to grow oriented MOF thin films exhibiting pronounced green electroluminescence with low onset voltages. Measurements at different temperatures clearly demonstrate the presence of TADF. Finally, this work reports that the layer-by-layer process used for MOF thin film deposition allows the integration of the TADF-DPA-TPE in a functioning LED device.
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Affiliation(s)
- Ritesh Haldar
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz Platz-1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Marius Jakoby
- Institute of Microstructure Technology (IMT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz Platz-1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Mariana Kozlowska
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz Platz-1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Motiur Rahman Khan
- Light Technology Institute (LTI), Karlsruhe Institute of Technology (KIT), Engesserstrasse 13, 76131, Karlsruhe, Germany
| | - Hongye Chen
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz Platz-1, 76344, Eggenstein-Leopoldshafen, Germany.,State Key Laboratory of Mechanics and Control of Mechanical Structures, Key Laboratory for Intelligent Nano Materials and Devices of Ministry of Education, Institute of Nano Science, Nanjing, P. R. China
| | - Yohanes Pramudya
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz Platz-1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Bryce S Richards
- Institute of Microstructure Technology (IMT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz Platz-1, 76344, Eggenstein-Leopoldshafen, Germany.,Light Technology Institute (LTI), Karlsruhe Institute of Technology (KIT), Engesserstrasse 13, 76131, Karlsruhe, Germany
| | - Lars Heinke
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz Platz-1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Wolfgang Wenzel
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz Platz-1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Fabrice Odobel
- CNRS, Chimie et Interdisciplinarité: Synthèse, Analyse, Modélisation, Université de Nantes, CEISAM, UMR 6230, 4400, Nantes, France
| | - Stéphane Diring
- CNRS, Chimie et Interdisciplinarité: Synthèse, Analyse, Modélisation, Université de Nantes, CEISAM, UMR 6230, 4400, Nantes, France
| | - Ian A Howard
- Institute of Microstructure Technology (IMT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz Platz-1, 76344, Eggenstein-Leopoldshafen, Germany.,Light Technology Institute (LTI), Karlsruhe Institute of Technology (KIT), Engesserstrasse 13, 76131, Karlsruhe, Germany
| | - Uli Lemmer
- Institute of Microstructure Technology (IMT), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz Platz-1, 76344, Eggenstein-Leopoldshafen, Germany.,Light Technology Institute (LTI), Karlsruhe Institute of Technology (KIT), Engesserstrasse 13, 76131, Karlsruhe, Germany
| | - Christof Wöll
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz Platz-1, 76344, Eggenstein-Leopoldshafen, Germany
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Zhao Y, Zhao X, Li M, Li Z, Peng H, Xie X. Crosstalk‐Free Patterning of Cooperative‐Thermoresponse Images by the Synergy of the AIEgen with the Liquid Crystal. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201915053] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Ye Zhao
- Key Lab for Material Chemistry of Energy Conversion and StorageMinistry of EducationSchool of Chemistry and Chemical Engineering, and National Anti-Counterfeit Engineering Research CenterHuazhong University of Science and Technology (HUST) Wuhan 430074 China
| | - Xiaoyu Zhao
- Key Lab for Material Chemistry of Energy Conversion and StorageMinistry of EducationSchool of Chemistry and Chemical Engineering, and National Anti-Counterfeit Engineering Research CenterHuazhong University of Science and Technology (HUST) Wuhan 430074 China
| | - Ming‐De Li
- Department of Chemistry and Key Lab for Preparation and Application of Ordered Structural Materials of Guangdong ProvinceShantou University Shantou 515063 China
| | - Zhong'an Li
- Key Lab for Material Chemistry of Energy Conversion and StorageMinistry of EducationSchool of Chemistry and Chemical Engineering, and National Anti-Counterfeit Engineering Research CenterHuazhong University of Science and Technology (HUST) Wuhan 430074 China
| | - Haiyan Peng
- Key Lab for Material Chemistry of Energy Conversion and StorageMinistry of EducationSchool of Chemistry and Chemical Engineering, and National Anti-Counterfeit Engineering Research CenterHuazhong University of Science and Technology (HUST) Wuhan 430074 China
| | - Xiaolin Xie
- Key Lab for Material Chemistry of Energy Conversion and StorageMinistry of EducationSchool of Chemistry and Chemical Engineering, and National Anti-Counterfeit Engineering Research CenterHuazhong University of Science and Technology (HUST) Wuhan 430074 China
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Zhao Y, Zhao X, Li M, Li Z, Peng H, Xie X. Crosstalk‐Free Patterning of Cooperative‐Thermoresponse Images by the Synergy of the AIEgen with the Liquid Crystal. Angew Chem Int Ed Engl 2020; 59:10066-10072. [DOI: 10.1002/anie.201915053] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 01/01/2020] [Indexed: 01/15/2023]
Affiliation(s)
- Ye Zhao
- Key Lab for Material Chemistry of Energy Conversion and StorageMinistry of EducationSchool of Chemistry and Chemical Engineering, and National Anti-Counterfeit Engineering Research CenterHuazhong University of Science and Technology (HUST) Wuhan 430074 China
| | - Xiaoyu Zhao
- Key Lab for Material Chemistry of Energy Conversion and StorageMinistry of EducationSchool of Chemistry and Chemical Engineering, and National Anti-Counterfeit Engineering Research CenterHuazhong University of Science and Technology (HUST) Wuhan 430074 China
| | - Ming‐De Li
- Department of Chemistry and Key Lab for Preparation and Application of Ordered Structural Materials of Guangdong ProvinceShantou University Shantou 515063 China
| | - Zhong'an Li
- Key Lab for Material Chemistry of Energy Conversion and StorageMinistry of EducationSchool of Chemistry and Chemical Engineering, and National Anti-Counterfeit Engineering Research CenterHuazhong University of Science and Technology (HUST) Wuhan 430074 China
| | - Haiyan Peng
- Key Lab for Material Chemistry of Energy Conversion and StorageMinistry of EducationSchool of Chemistry and Chemical Engineering, and National Anti-Counterfeit Engineering Research CenterHuazhong University of Science and Technology (HUST) Wuhan 430074 China
| | - Xiaolin Xie
- Key Lab for Material Chemistry of Energy Conversion and StorageMinistry of EducationSchool of Chemistry and Chemical Engineering, and National Anti-Counterfeit Engineering Research CenterHuazhong University of Science and Technology (HUST) Wuhan 430074 China
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Li Y, An Y, Fan J, Liu X, Li X, Hahn FE, Wang Y, Han Y. Strategy for the Construction of Diverse Poly‐NHC‐Derived Assemblies and Their Photoinduced Transformations. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201912322] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yang Li
- Key Laboratory of Synthetic and Natural Functional Molecule ChemistryCollege of Chemistry and Materials ScienceNorthwest University Xi'an 710127 P. R. China
| | - Yuan‐Yuan An
- Key Laboratory of Synthetic and Natural Functional Molecule ChemistryCollege of Chemistry and Materials ScienceNorthwest University Xi'an 710127 P. R. China
| | - Jian‐Zhong Fan
- Key Laboratory of Synthetic and Natural Functional Molecule ChemistryCollege of Chemistry and Materials ScienceNorthwest University Xi'an 710127 P. R. China
| | - Xiao‐Xu Liu
- Key Laboratory of Synthetic and Natural Functional Molecule ChemistryCollege of Chemistry and Materials ScienceNorthwest University Xi'an 710127 P. R. China
| | - Xin Li
- Key Laboratory of Synthetic and Natural Functional Molecule ChemistryCollege of Chemistry and Materials ScienceNorthwest University Xi'an 710127 P. R. China
| | - F. Ekkehardt Hahn
- Key Laboratory of Synthetic and Natural Functional Molecule ChemistryCollege of Chemistry and Materials ScienceNorthwest University Xi'an 710127 P. R. China
- Institut für Anorganische und Analytische ChemieWestfälische Wilhelms- Universität Münster, Corrensstraße 39 48149 Münster Germany
| | - Yao‐Yu Wang
- Key Laboratory of Synthetic and Natural Functional Molecule ChemistryCollege of Chemistry and Materials ScienceNorthwest University Xi'an 710127 P. R. China
| | - Ying‐Feng Han
- Key Laboratory of Synthetic and Natural Functional Molecule ChemistryCollege of Chemistry and Materials ScienceNorthwest University Xi'an 710127 P. R. China
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Li Y, An YY, Fan JZ, Liu XX, Li X, Hahn FE, Wang YY, Han YF. Strategy for the Construction of Diverse Poly-NHC-Derived Assemblies and Their Photoinduced Transformations. Angew Chem Int Ed Engl 2019; 59:10073-10080. [PMID: 31589799 DOI: 10.1002/anie.201912322] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Indexed: 12/14/2022]
Abstract
A series of supramolecular assemblies of types [Ag8 (L)4 ](PF6 )8 and [Ag4 (L)2 ](PF6 )4 , obtained from the tetraphenylethylene (TPE) bridged tetrakis(1,2,4-triazolium) salts H4 -L(PF6 )4 and AgI ions, is described. The assembly type obtained dependends on the N-wingtip substituents of H4 -L(PF6 )4 . Changes in the lengths of the N4-wingtip substituents enables controlled formation of assemblies with either [Ag4 (L)2 ](PF6 )4 or [Ag8 (L)4 ](PF6 )8 stoichiometry. The molecular structures of selected [Ag8 (L)4 ](PF6 )8 and [Ag4 (L)2 ](PF6 )4 assemblies were determined by X-ray diffraction analyses. While H4 -L(PF6 )4 does not exhibit fluorescence in solution, their tetra-NHC (NHC=N-heterocyclic carbene) assemblies do upon NHC-metal coordination. Upon irradiation, all assemblies undergo a light-induced, supramolecule-to-supramolecule structural transformation by an oxidative photocyclization involving phenyl groups of the TPE core, resulting in a significant change of the luminescence properties.
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Affiliation(s)
- Yang Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry and Materials Science, Northwest University, Xi'an, 710127, P. R. China
| | - Yuan-Yuan An
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry and Materials Science, Northwest University, Xi'an, 710127, P. R. China
| | - Jian-Zhong Fan
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry and Materials Science, Northwest University, Xi'an, 710127, P. R. China
| | - Xiao-Xu Liu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry and Materials Science, Northwest University, Xi'an, 710127, P. R. China
| | - Xin Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry and Materials Science, Northwest University, Xi'an, 710127, P. R. China
| | - F Ekkehardt Hahn
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry and Materials Science, Northwest University, Xi'an, 710127, P. R. China.,Institut für Anorganische und Analytische Chemie, Westfälische Wilhelms-, Universität Münster, Corrensstraße 39, 48149, Münster, Germany
| | - Yao-Yu Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry and Materials Science, Northwest University, Xi'an, 710127, P. R. China
| | - Ying-Feng Han
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry and Materials Science, Northwest University, Xi'an, 710127, P. R. China
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