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Wu X, Liu S, Chen H, Ding H, Xu S, Wu Y, Wang Y, Zhao F. Synthesis and photophysical properties of dinuclear N-heterocyclic carbene (NHC) copper(I) complexes and their application to photoluminescent light-emitting diodes and anti-counterfeiting. Spectrochim Acta A Mol Biomol Spectrosc 2024; 308:123758. [PMID: 38091652 DOI: 10.1016/j.saa.2023.123758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 12/05/2023] [Accepted: 12/08/2023] [Indexed: 01/13/2024]
Abstract
Here, a series of dinuclear N-heterocyclic carbene (NHC) copper(I) complexes having 3,3'-(1,4-phenylenebis(methylene))bis(1-(pyridin-2-yl)-1H-imidazolylidene as bis-NHC ligand and bis[(2-diphenylphosphino)phenyl]ether (POP) as auxiliary ligand have been successfully prepared, and their photophysical properites were investigaged experimentally and theocitcally. The resulting complexes all exhibited intense green to yellow emission that originated from the thermally activated delayed fluorescence (TADF) with a high photoluminescence quantum yield of up to 0.67 and longer excited-state lifetimes on the microsecond time scale in the solid state. Green and yellow light-emitting diode (LED) devices based on Cu(I) complexes have successfully achieved good color rendering indices. Moreover, the anti-counterfeiting patterns and QR codes made of Cu(I) complexes have been applied to clothing, banknotes, books and glass plates with excellent anti-counterfeiting effects.
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Affiliation(s)
- Xiaoyun Wu
- School of Chemistry and Chemical Engineering, Jiangxi Science and Technology Normal University, Fenglin Street, Nanchang, Jiangxi 330013, PR China
| | - Shuo Liu
- School of Chemistry and Chemical Engineering, Jiangxi Science and Technology Normal University, Fenglin Street, Nanchang, Jiangxi 330013, PR China
| | - Hongyun Chen
- School of Chemistry and Chemical Engineering, Jiangxi Science and Technology Normal University, Fenglin Street, Nanchang, Jiangxi 330013, PR China
| | - Haixin Ding
- School of Chemistry and Chemical Engineering, Jiangxi Science and Technology Normal University, Fenglin Street, Nanchang, Jiangxi 330013, PR China
| | - Shengxian Xu
- School of Chemistry and Chemical Engineering, Jiangxi Science and Technology Normal University, Fenglin Street, Nanchang, Jiangxi 330013, PR China
| | - Yaqian Wu
- School of Chemistry and Chemical Engineering, Jiangxi Science and Technology Normal University, Fenglin Street, Nanchang, Jiangxi 330013, PR China.
| | - Yibo Wang
- Key Laboratory of Guizhou High Performance Computational Chemistry, Department of Chemistry, Guizhou University, Guiyang 550025, PR China
| | - Feng Zhao
- School of Chemistry and Chemical Engineering, Jiangxi Science and Technology Normal University, Fenglin Street, Nanchang, Jiangxi 330013, PR China.
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Yu W, Yang Y, Wang Y, Hu L, Hao J, Xu L, Liu W. Versatile MXene Gels Assisted by Brief and Low-Strength Centrifugation. Nanomicro Lett 2024; 16:94. [PMID: 38252190 PMCID: PMC10803715 DOI: 10.1007/s40820-023-01302-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 11/25/2023] [Indexed: 01/23/2024]
Abstract
Due to the mutual repulsion between their hydrophilic surface terminations and the high surface energy facilitating their random restacking, 2D MXene nanosheets usually cannot self-assemble into 3D macroscopic gels with various applications in the absence of proper linking agents. In this work, a rapid spontaneous gelation of Ti3C2Tx MXene with a very low dispersion concentration of 0.5 mg mL-1 into multifunctional architectures under moderate centrifugation is illustrated. The as-prepared MXene gels exhibit reconfigurable internal structures and tunable rheological, tribological, electrochemical, infrared-emissive and photothermal-conversion properties based on the pH-induced changes in the surface chemistry of Ti3C2Tx nanosheets. By adopting a gel with optimized pH value, high lubrication, exceptional specific capacitances (~ 635 and ~ 408 F g-1 at 5 and 100 mV s-1, respectively), long-term capacitance retention (~ 96.7% after 10,000 cycles) and high-precision screen- or extrusion-printing into different high-resolution anticounterfeiting patterns can be achieved, thus displaying extensive potential applications in the fields of semi-solid lubrication, controllable devices, supercapacitors, information encryption and infrared camouflaging.
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Affiliation(s)
- Weiyan Yu
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, People's Republic of China
- Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai, 264006, People's Republic of China
| | - Yi Yang
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, People's Republic of China
- Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai, 264006, People's Republic of China
| | - Yunjing Wang
- Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai, 264006, People's Republic of China
| | - Lulin Hu
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, People's Republic of China
- Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai, 264006, People's Republic of China
| | - Jingcheng Hao
- Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai, 264006, People's Republic of China.
- Key Laboratory of Colloid and Interface Chemistry and Key Laboratory of Special Aggregated Materials, Shandong University, Jinan, 250100, People's Republic of China.
| | - Lu Xu
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, People's Republic of China.
- Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai, 264006, People's Republic of China.
| | - Weimin Liu
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, People's Republic of China
- Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai, 264006, People's Republic of China
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