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Iridium complex of double-tridentate structure and preparation method and application of iridium complex

A technology for iridium complexes and compounds is applied in the field of iridium complexes with bitridentate structure and their preparation, and can solve the problems of complex ligand structure and difficulty in ligand modification, etc.

Active Publication Date: 2019-01-18
NANJING UNIV OF TECH
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Problems solved by technology

[0004] Most of the reported double tridentate iridium complexes are designed and developed based on terpyridine (N^N^N) ligands (such as 2,2':6',2"-terpyridine), but such ligands Modification is difficult and the ligand structure is complex

Method used

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  • Iridium complex of double-tridentate structure and preparation method and application of iridium complex
  • Iridium complex of double-tridentate structure and preparation method and application of iridium complex
  • Iridium complex of double-tridentate structure and preparation method and application of iridium complex

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preparation example Construction

[0044] The present invention provides a method for preparing an iridium complex with a double-tridentate structure described in the above technical solution, comprising the following steps:

[0045] mixing the main ligand, iridium trichloride and the first solvent, and performing the first coordination substitution reaction in a protective atmosphere to obtain an iridium dichloro bridge compound;

[0046] Mix the iridium dichloro bridge compound, 6-phenyl-2,2'-bipyridine, reaction aid and the second solvent, and carry out the second coordination substitution reaction in a protective atmosphere; use potassium hexafluorophosphate to saturate The aqueous solution replaces the Cl in the obtained system after the second coordination substitution reaction - , to obtain an iridium complex having a structure shown in formula I, formula II or formula III;

[0047] The main ligand has a structure shown in formula A, formula B or formula C:

[0048]

[0049] Among them, R 1 Include...

Embodiment 1

[0066] Synthesis of complex 01-1

[0067]

[0068] Add 0.36g of 4,6-dimethyl-1,3-dipyridylbenzene (ligand L01-1), 0.50g of iridium trichloride trihydrate, 45mL of 2-ethoxyethanol and 100mL two-necked flask. 15 mL of deionized water, protected with argon, and then reacted at 105°C for 24 hours; the resulting reaction system was cooled to room temperature, filtered with suction, and the filter residue was washed with deionized water, absolute ethanol, and ether in sequence. Vacuum drying under the condition of ℃ for 12h, the orange-yellow iridium dichloro bridge compound (intermediate D01-1, [Ir(L01-1)Cl 2 ] 2 ) powder 0.84g, yield 58%.

[0069] In a 100mL two-necked flask, add orange-yellow iridium dichloro bridge compound [Ir(L01-1)Cl 2 ] 2 0.71g of powder, 0.30g of 6-phenyl-2,2'-bipyridine, 0.71g of silver trifluoromethanesulfonate and 40mL of anhydrous ethylene glycol, protected by argon, and reacted at 200°C for 24h; The resulting reaction system was cooled to room ...

Embodiment 2

[0073] Synthetic complex 01-2

[0074]

[0075] Add 0.4 g of 4,6-difluoro-1,3-dipyridylbenzene (ligand L01-2), 0.53 g of iridium trichloride trihydrate, 45 mL of 2-ethoxyethanol and 15mL of deionized water, protected with argon, and then reacted at 105°C for 24h; the resulting reaction system was cooled to room temperature, filtered with suction, and the filter residue was washed with deionized water, absolute ethanol, and ether in sequence, and the obtained filter residue was heated at 45°C Under the condition of vacuum drying for 12h, the yellow iridium dichloro bridge compound (intermediate D01-2, [Ir(L01-2)Cl 2 ] 2 ) powder 0.71g, yield 45%.

[0076] In a 100mL two-necked flask, add yellow iridium dichloro bridge compound [Ir(L01-2)Cl 2 ] 2 0.71g of powder, 0.34g of 6-phenyl-2,2'-bipyridine, 0.83g of silver trifluoromethanesulfonate and 40mL of anhydrous ethylene glycol, protected by argon, and reacted at 200°C for 24h; The resulting reaction system was cooled to r...

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Abstract

The invention provides an iridium complex having a structure of Formula I, Formula II or Formula III. According to the invention, different electron-donating groups, electron withdrawing groups, and extended phi-conjugated systems modified tridentate ligands are introduced for building a double-tridentate structure iridium (III) complex; the obtained double-tridentate structure iridium (III) complex has a simple structure (main ligand (N^C^N)-1,3-dipyridylbenzene / 1,3-diisoquinolylbenzene, and co-ligand (N^N^C)-6-phenyl-2,2'-bipyridine)), and the double-tridentate structure iridium (III) complex has a wide-range weak ground state absorption in a visible region, the ground state absorption can be can extent to a near-infrared light region, and a better optical limiting effect on a 532 nm laser. The complex can be applied to the development of nonlinear optical materials.

Description

technical field [0001] The invention relates to the technical field of organic photoelectric functional materials, in particular to an iridium complex with a double-tridentate structure and its preparation method and application. Background technique [0002] d with a regular octahedral coordination configuration 8 Iridium complexes exhibit excellent photophysical properties, such as: room temperature phosphorescence, high fluorescence quantum yield, long triplet lifetime, etc. These unique photophysical properties make iridium complexes widely used in organic light-emitting diodes (OLEDs) , light-emitting electrochemical cells (LECs), photocatalysis, fluorescent biological dyes, biosensing, and nonlinear optics. [0003] In recent years, lasers have been gradually used in laser weapons, laser communications, and landscape lighting. However, laser damage to human eyes and damage to precision photoelectric sensors has caused people to panic. Therefore, laser protection has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F15/00C09K11/06G02F1/361
CPCG02F1/3619C09K11/06C07F15/0033C09K2211/185
Inventor 刘睿陆佳鹏施红朱红军朱森强唐猛
Owner NANJING UNIV OF TECH
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