Fluorescent phosphorescent double-emission tridentate iridium complex as well as preparation method and application thereof
A double-emission, tridentate iridium technology, which is applied in the direction of fluorescence/phosphorescence, indium organic compounds, and compounds containing elements of group 8/9/10/18 of the periodic table, can solve the problem of affecting the service life of organic electroluminescent devices, Affect the use value of multi-dentate iridium complexes, poor performance stability of phosphorescent iridium complexes, etc., to achieve the effects of improving use value, reducing self-quenching, and improving solubility
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[0044] Further, the present invention also proposes a method for preparing a tridentate iridium complex with dual emission of fluorescence and phosphorescence, comprising the following steps:
[0045] Step S10, the IrCl 3 ·3H 2 O and HOCH 2 -CH 2 OCH 3 Mix, seal, then add tetrahydrothiophene, in N 2 Under the atmosphere, stir the reaction at 130°C-170°C for 10-12h, cool to room temperature to obtain a crude product, and purify the crude product to obtain Ir(tht) 3 Cl 3 .
[0046] Among them, the IrCl 3 ·3H 2 O (Sinopharm Group Chemical Reagent Co., Ltd.) quality and the HOCH 2 -CH 2 OCH 3 The volume ratio is 2g: (12-18) mL. Preferably, the IrCl 3 ·3H 2 The mass of O is related to the HOCH 2 -CH 2 OCH 3 The volume ratio is 2g: 15mL. In addition, the added tetrahydrothiophene (tht) is 2-3 g, preferably 2.5 g. Specifically, purifying the crude product includes:
[0047] Step S11, performing suction filtration on the crude product, collecting and cleaning the o...
specific Embodiment approach
[0049] In this embodiment, a specific implementation of step S10 is provided: the IrCl 3 ·3H 2 O and HOCH 2 -CH 2 OCH 3 Place in a three-necked flask, put a stirring ball at the same time, then seal the mouth of the bottle with silicone grease, place the three-necked flask on a magnetic heating stirrer, then add tetrahydrothiophene (tht) into the three-necked flask with a syringe, and then carry out Vacuum punching N 2 operation, and finally stirred and reacted at 130°C to 170°C for 10 to 12 hours, and after cooling to room temperature, the reaction device was removed to obtain a crude product. Suction filtration collects the filter cake, and cleans the filter cake with hexane, then dissolves the filter cake to obtain the filtrate, and then carries out chromatographic separation of the filtrate to obtain the target product, which is recrystallized with ethanol to obtain yellow microcrystals, i.e. Ir( tht) 3 Cl 3 .
[0050] S20, the Ir(tht) 3 Cl 3 , antioxidant THP-EP...
Embodiment 1
[0066] (1)Ir(tht) 3 Cl 3 Synthesis
[0067] ①Synthetic route:
[0068]
[0069] ② Synthesis method: IrCl 3 ·3H 2 O and HOCH 2 -CH 2 OCH 3 Place in a three-necked flask, put a stirring ball at the same time, then seal the mouth of the bottle with silicone grease, place the three-necked flask on a magnetic heating stirrer, then add tetrahydrothiophene (tht) into the three-necked flask with a syringe, and then carry out Vacuum punching N 2 operation, and finally stirred and reacted at 130°C to 170°C for 10 to 12 hours, and after cooling to room temperature, the reaction device was removed to obtain a crude product. Suction filtration collects the filter cake, and cleans the filter cake with hexane, then dissolves the filter cake to obtain the filtrate, and then carries out chromatographic separation of the filtrate to obtain the target product, which is recrystallized with ethanol to obtain yellow microcrystals, i.e. Ir( tht) 3 Cl 3 .
[0070] (2) Synthesis of trid...
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