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Dual-core ionic iridium coordination compound and uses thereof

A technology of iridium complex and ionic type is applied in the field of binuclear ionic iridium complex to achieve the effect of saving organic solvent, short synthesis route and easy purification

Inactive Publication Date: 2015-08-26
NORTHEAST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] So far, there are only 2 cases of mononuclear ionic transition metal iridium complexes with both aggregation-inducing phenomenon and suppressed discoloration properties (Dalton Trans. 2012, 41, 9590-9593; J.Mater.Chem. C, 2013, 1, 1440 – 1449), while dinuclear ionic transition metal iridium complexes with both aggregation-inducing and suppressed discoloration properties have not yet been reported

Method used

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  • Dual-core ionic iridium coordination compound and uses thereof
  • Dual-core ionic iridium coordination compound and uses thereof
  • Dual-core ionic iridium coordination compound and uses thereof

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Experimental program
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Effect test

Embodiment 1

[0031] Mix 0.1043 g (0.1 mmol) of 2-fluorophenylpyrazole dichloride bridge with 0.0284 g (0.1 mmol) of ligand N,N'-(di-2-pyridyl)-1,4-diiminobenzene In a 50ml round-bottom flask, add 15ml of methanol and 15ml of dichloromethane as solvents respectively, and stir and reflux for 4h at 78°C under nitrogen protection. After the reaction, cool to room temperature and add 0.0368g of potassium hexafluorophosphate (0.2 mmol), stirred for 1 hour, and then filtered to obtain 0.1340 g (79.8%) of orange solid powder. The molecular formula is C 54 H 34 F 20 Ir 2 N 12 P 2 , The relative molecular mass is 1678.14g / mol, and the melting point of the complex is 385℃. Single crystal structure diagram such as figure 1 Shown.

Embodiment 2

[0033] Mix 0.1043 g (0.1 mmol) of 2-fluorophenylpyrazole dichloride bridge with 0.0341 g (0.12 mmol) of ligand N,N'-(di-2-pyridyl)-1,4-diiminobenzene In a 50ml round-bottom flask, add 15ml of methanol and 15ml of dichloromethane as solvents respectively, and stir and reflux for 4h at 78°C under nitrogen protection. After the reaction, cool to room temperature and add 0.0368g of potassium hexafluorophosphate (0.2 mmol), stirred for 1 hour, then filtered to obtain 0.1450g (86.4%) of orange solid powder; the molecular formula is C 54 H 34 F 20 Ir 2 N 12 P 2 , The relative molecular mass is 1678.14g / mol, and the melting point of the complex is 385℃. Single crystal structure diagram such as figure 1 Shown.

Embodiment 3

[0035] Mix 0.2086 g (0.2 mmol) of 2-fluorophenylpyrazole dichloride bridge with 0.0625 g (0.22 mmol) of ligand N,N'-(di-2-pyridyl)-1,4-diiminobenzene In a 50ml round-bottom flask, add the same amount of methanol 15ml and dichloromethane 15ml respectively as solvents, stir and reflux for 4h at 78°C in the dark under nitrogen protection. After the reaction, cool to room temperature and add 0.0736g of potassium hexafluorophosphate (0.4 mmol), stirred for 1 hour, and then filtered to obtain 0.2688g (80.1%) of orange solid powder; the molecular formula is C 54 H 34 F 20 Ir 2 N 12 P 2 The relative molecular mass is 1678.14g / mol, and the melting point of the complex is 385℃. Single crystal structure diagram such as figure 1 Shown.

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Abstract

The present invention discloses a dual-core ionic iridium coordination compound, which is a novel organic light-emitting material concurrently having pressing discoloration and aggregation inducing, wherein the molecular formula is C54H34F20Ir2N12P2, the relative molecular mass is 1678.14 g / mol, and the coordination compound melting point is 315 DEG C. The preparation method comprises: adding 2-fluorophenyl pyrazole dichlorendic and a ligand bpba to a round bottom flask in a mixing manner according to a ratio of 1:(1.0-1.5), adding equal amounts of methanol and dichloromethane as a solvent to the flask, carrying out dark stirring reflux for 4 h under the protection of nitrogen gas at a temperature of 78 DEG C, cooling to a room temperature after completing the reaction, adding potassium hexafluorophosphate, stirring for 1 h, and filtering to obtain orange solid powder [(2Fppz)2Ir-(bpba)-Ir(2Fppz)2]2PF6. The dual-core ionic iridium coordination compound of the present invention can be used in organic gas sensors.

Description

technical field [0001] The invention relates to a dinuclear ion-type iridium complex, which has properties of aggregation-induced luminescence and suppressed discoloration, and belongs to the technical field of chemical synthesis. Background technique [0002] Ionic iridium complexes have attracted extensive attention in the field of photophysical and chemical applications because of their high luminous efficiency and adjustable emission wavelength. For example, ionic iridium complexes are widely used in solid-state light-emitting electrochemical cells, sensors, photocatalytic hydrogen production, and biological probes. However, in practical applications, we found that the luminous efficiency of such complexes tends to decrease under high concentration conditions, that is, the fluorescence aggregation quenching phenomenon occurs, which seriously limits the development of such complexes in the field of practical applications. . In recent years, with the in-depth research on...

Claims

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Application Information

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IPC IPC(8): C07F15/00C09K11/06G01N21/64
CPCC07F15/0033C09K9/02C09K11/06C09K2211/185G01N21/64G01N21/643G01N2021/6432
Inventor 朱东霞李洸伕车伟龙单国刚李鹏刘继红苏忠民
Owner NORTHEAST NORMAL UNIVERSITY
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