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Cationic metal complex iridium-iminoquinoline crystal material and preparation method thereof

A technology of iminoquinoline and metal complexes, which is applied in the fields of luminescent materials, chemical instruments and methods, semiconductor/solid-state device manufacturing, etc., achieving the effects of short synthesis time, good thermal stability and solubility, and good economy

Pending Publication Date: 2022-04-15
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the synthesized quinoline-based auxiliary ligand can be combined with the iridium precursor to prepare its crystal material, study its optical properties, and finally apply it to the field of organic light-emitting diodes and light-emitting electrochemical cells. Related technologies have not yet been reported.

Method used

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  • Cationic metal complex iridium-iminoquinoline crystal material and preparation method thereof
  • Cationic metal complex iridium-iminoquinoline crystal material and preparation method thereof
  • Cationic metal complex iridium-iminoquinoline crystal material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Iridium dimer [Ir(ppz) 2 (μ-Cl)] 2 Synthesis:

[0036] figure 1 A is iridium dimer [Ir(ppz) 2 (μ-Cl)] 2 synthetic route map.

[0037] Add hydrated iridium trichloride 350mg (1mmol) and chelating ligand 1-phenylpyrazole 0.265mL (2mmol) in reaction bottle, then add reaction solvent ethylene glycol ether 40mL and distilled water 8mL, under nitrogen protection, in It was condensed and refluxed at 135°C for 24 hours, and the progress of the reaction was monitored by TLC during the reaction. After the reaction, the solution was cooled to room temperature and filtered with a small Buchner funnel, and the resulting precipitate was washed with ethanol and petroleum ether to remove the reaction raw materials and by-products, and then washed with CH 2 Cl 2 and H 2 O is extracted and further purified, and finally the organic phase is spin-dried to obtain 280mg of a light yellow solid [Ir(ppz) 2 (μ-Cl)] 2 (53.8%).

[0038] (2) Synthesis of auxiliary ligand 2-fluorenyl...

Embodiment 2

[0054] Step (1) and step (2) are with embodiment 1, and other steps are as follows:

[0055] (3) Metal complex iridium-iminoquinoline [Ir(ppz) 2 (IninoQuinoline)][PF 6 ]Synthesis:

[0056] Add 103mg (0.1mmol) iridium dimer and 64.02mg (0.2mmol) auxiliary ligand 2-fluorenyliminoquinoline to a 50mL reaction flask, then add reaction solvents 30mL dichloromethane and 10mL methanol in sequence, and finally add 70 mg of potassium hexafluorophosphate was condensed and refluxed for 24 hours at 85°C in the dark under the protection of N2. After the reaction, it was purified by column chromatography (dichloromethane:petroleum ether=2:1) ​​to obtain 52.3 mg of iridium-iminoquinoline.

[0057] (4) Normal temperature diffusion culture of metal complex iridium-iminoquinoline crystals:

[0058] Take 1 mmol of the iridium-iminoquinoline solid and dissolve it in 1 mL of dichloromethane, then transfer the solution to a 5 mL transistor, and slowly add 1.5 mL of a buffer solution prepared by d...

Embodiment 3

[0062] Step (1) and step (2) are with embodiment 1, and other steps are as follows:

[0063] (3) Metal complex iridium-iminoquinoline [Ir(ppz) 2 (IninoQuinoline)][PF 6 ]Synthesis:

[0064] Add 103mg (0.1mmol) iridium dimer and 64.02mg (0.2mmol) auxiliary ligand 2-fluorenyliminoquinoline to a 50mL reaction flask, then add reaction solvents 20mL dichloromethane and 10mL methanol in sequence, and finally add 70 mg of potassium hexafluorophosphate was condensed and refluxed for 24 hours at 85°C in the dark under the protection of N2. After the reaction, it was purified by column chromatography (dichloromethane:petroleum ether=2:1) ​​to obtain 51.6 mg of iridium-iminoquinoline.

[0065] (4) Normal temperature diffusion culture of metal complex iridium-iminoquinoline crystals:

[0066] Take 1 mmol of iridium-iminoquinoline solid and dissolve it in 1 mL of dichloromethane, then transfer the solution to a 5 mL transistor, then slowly add 2 mL of buffer solution prepared by dichloro...

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Abstract

The invention belongs to the field of organic light-emitting diodes and light-emitting electrochemical cells, and discloses a cationic metal complex iridium-iminoquinoline crystal material and a preparation method thereof. The preparation method comprises the following steps: coordinating unoccupied coordination sites of a phenyl pyrazole ring metal iridium dimer with nitrogen atoms on 2-fluorenyl imino quinoline to prepare a cationic metal complex iridium-imino quinoline, and carrying out diffusion culture on the cationic metal complex iridium-imino quinoline to finally obtain a crystal material of the metal complex. The iridium-iminoquinoline crystal material prepared by the invention has good optical performance and can be used as an optical device material.

Description

technical field [0001] The invention belongs to the field of organic light-emitting diodes and light-emitting electrochemical cells, and specifically relates to a cationic metal complex iridium-iminoquinoline crystal material and a preparation method thereof. Background technique [0002] In recent years, the development of coordination compounds, especially metal-organic compounds, has attracted people's attention, not only because these complexes often have novel skeleton structures, but also because of their potential application value. For example, containing metal iridium (Ir III ) metal-organic compounds have attracted extensive research interest due to their high photoluminescence quantum yield, short phosphorescence lifetime, and color tunability with easy ligand selection around the metal center. [0003] At present, the synthesis methods of functional complexes tend to be diversified. One of the more important synthetic strategies is to first synthesize molecular...

Claims

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Application Information

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IPC IPC(8): C07F15/00C09K11/06H01L51/00H01L51/54H01L51/46H10K99/00
CPCY02E10/549
Inventor 钱军段华建马亚威阚素娟
Owner JIANGSU UNIV
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