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Novel electrically neutral tridentate iridium [iii] complex red light material and preparation method

A technology of electroneutrality and complexes, applied in luminescent materials, chemical instruments and methods, compounds containing elements of Group 8/9/10/18 of the periodic table, etc., can solve the problems of less research and achieve easy deprotonation The effect of improving the luminous efficiency and improving the luminous efficiency

Inactive Publication Date: 2011-12-07
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are very few studies on the application of two tridentate chelating ligands to construct iridium complex luminescent materials, and the iridium complex luminescent materials based on trifluoromethyl-containing bipyridyl pyrazole tridentate chelating ligands and The preparation method has not yet been reported

Method used

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  • Novel electrically neutral tridentate iridium [iii] complex red light material and preparation method
  • Novel electrically neutral tridentate iridium [iii] complex red light material and preparation method
  • Novel electrically neutral tridentate iridium [iii] complex red light material and preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Under nitrogen protection, trihydrate iridium trichloride [III] metal salt reagent (353mg, 1.00mmol) and 6-[5-trifluoromethylpyridine]-2,2'-bipyridine tridentate chelate ligand ( 303.7mg, 1.05mmol) (the molar ratio of the two is 1:1.05) was heated to 78°C in 30mL ethanol and refluxed for 2 days. Heating was stopped, and after the reaction liquid was cooled to room temperature, the reaction liquid was sucked dry on a rotary evaporator, and the obtained solid was dissolved with 10 mL of acetone, and then 60 mL of ether was added to precipitate it while stirring. The obtained precipitate was filtered out, washed with diethyl ether for 3-4 times, and vacuum-dried to obtain an orange-yellow solid intermediate (535 mg, 0.91 mmol), with a yield of about 91%.

[0029] In a nitrogen glove box, the above-mentioned iridium complex intermediate (535mg, 0.91mmol), silver trifluoromethanesulfonate (702mg, 2.73mmol) and 2,6-diphenylpyridine ligand (2.11g, 9.10mmol ) (the molar ratio ...

Embodiment 2

[0035]Under nitrogen protection, trihydrate iridium trichloride [III] metal salt reagent (353mg, 1.00mmol) and 6-[5-trifluoromethylpyridine]-2,2'-bipyridine tridentate chelate ligand ( 303.7mg, 1.05mmol) (the molar ratio of the two is 1:1.05) was heated to 78°C in 30mL ethanol and refluxed for 2 days. Heating was stopped, and after the reaction liquid was cooled to room temperature, the reaction liquid was sucked dry on a rotary evaporator, and the obtained solid was dissolved with 10 mL of acetone, and then 60 mL of ether was added to precipitate it while stirring. The obtained precipitate was filtered out, washed with diethyl ether for 3-4 times, and vacuum-dried to obtain an orange-yellow solid intermediate (532 mg, 0.90 mmol), with a yield of about 90%.

[0036] In a nitrogen glove box, the above-mentioned iridium complex intermediate (532mg, 0.90mmol), silver trifluoromethanesulfonate (702mg, 2.73mmol) and 2,6-diphenylpyridine ligand (4.21g, 18.20mmol ) (the molar ratio ...

Embodiment 3

[0038] Under nitrogen protection, trihydrate iridium trichloride [III] metal salt reagent (353mg, 1.00mmol) and 6-[5-trifluoromethylpyridine]-2,2'-bipyridine tridentate chelate ligand ( 303.7mg, 1.05mmol) (the molar ratio of the two is 1:1.05) was heated to 78°C in 30mL ethanol and refluxed for 2 days. Heating was stopped, and after the reaction liquid was cooled to room temperature, the reaction liquid was sucked dry on a rotary evaporator, and the obtained solid was dissolved with 10 mL of acetone, and then 60 mL of ether was added to precipitate it while stirring. The obtained precipitate was filtered out, washed with ether for 3-4 times, and vacuum-dried to obtain an orange-yellow solid intermediate (540 mg, 0.92 mmol), with a yield of about 92%.

[0039] In a nitrogen glove box, the above-mentioned iridium complex intermediate (540mg, 0.92mmol), silver trifluoromethanesulfonate (702mg, 2.73mmol) and 2,6-diphenylpyridine ligand (6.32g, 27.30mmol ) (the molar ratio of the ...

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Abstract

The invention relates to the synthesis technology of new luminescent materials, and is a new-type electrically neutral tridentate iridium [III] complex red light material and a preparation method thereof. It is a 6-[5-trifluoromethylpyrazole]-2,2'-bipyridine·2,6-diphenylpyridine iridium[III] complex. Under the protection of nitrogen, the trihydrate iridium trichloride [III] metal salt reagent and 6-[5-trifluoromethylpyridine]-2,2'-bipyridine tridentate chelate ligand were heated in ethanol, and the reaction The liquid was pumped dry for recrystallization, filtered, washed, and vacuum-dried to obtain an orange-yellow solid intermediate; in a nitrogen glove box, the orange-yellow intermediate, silver trifluoromethanesulfonate, and 2,6-diphenylpyridine ligand were uniformly mixed , ground into powder, heated, after the reaction solution was cooled to normal temperature, the filtrate was collected and dried to obtain the crude product, the crude product was separated, the second orange-red eluate was collected and dried, and vacuum-dried to obtain the final product, the yield was up to 30-68%.

Description

technical field [0001] The invention relates to synthesis technology of new luminescent materials, in particular to a novel electrically neutral tridentate iridium [III] complex red light material and a preparation method thereof. Background technique [0002] Due to the heavy atom effect and strong spin coupling effect, the trivalent iridium metal complexes in octahedral configuration exhibit good phosphorescence performance, such as high luminescence quantum efficiency and microsecond luminescence lifetime. In addition, through the modification of the ligand structure, the iridium [III] complex can be realized to emit light covering the entire visible light region from blue to red light. As a good phosphorescent material, it can be used in many fields such as electroluminescent devices, chemical sensors, nonlinear optical materials, dye-sensitized solar cells, biomarkers and probes. [0003] Trivalent iridium complexes constructed using three bidentate chelating ligands, ...

Claims

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Application Information

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IPC IPC(8): C09K11/06C07F15/00
Inventor 陈景林何丽华温和瑞
Owner JIANGXI UNIV OF SCI & TECH
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