Organic phosphorus luminescent material and preparation method and application thereof
A technology of luminescent materials and organic phosphorus, applied in the fields of luminescent materials, organic chemistry, indium organic compounds, etc., can solve the problems of insufficient luminous efficiency and thermal stability, and achieve extended durability, improved current efficiency, excellent color purity and brightness. Effect
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Embodiment 1
[0038] Preparation of compound I-1, its specific synthesis steps are as follows:
[0039]
[0040] Under nitrogen protection system, weigh ligand Ⅱ-1 24mmol, IrCl 3 ·3H 2 O 10mmol was put into the reaction system, a mixed solution of 180ml ethylene glycol ether and 60ml ultrapure water was added, refluxed under nitrogen protection system for 25 hours, then cooled to room temperature, a precipitate was precipitated, the precipitate was suction filtered, water, absolute ethanol and petroleum ether were washed and dried sequentially to obtain a dark red powder of bridging ligand IV-1 with a mass of 4.26 g and a yield of 59%.
[0041] Then weigh 2.5mmol of bridging ligand IV-1, add 25mmol of anhydrous potassium carbonate, then add 72ml of ethylene glycol ether to the system, replace nitrogen three times, add 3,7-diethyl-4 , 7.5 mmol of 6-nonanedione, reflux for 24 hours, cool down, filter with suction, wash with alcohol, and dry. Using dichloromethane as a solvent, using neu...
Embodiment 2
[0045] Preparation of compound I-21, its specific synthesis steps are as follows:
[0046]
[0047] Under nitrogen protection system, weigh ligand Ⅱ-21 25mmol, IrCl 3 ·3H 2 O 10mmol was put into the reaction system, a mixed solution of 210ml ethylene glycol ether and 70ml ultrapure water was added, refluxed for 30 hours under the nitrogen protection system, then cooled to room temperature, a precipitate was precipitated, the precipitate was suction filtered, water, absolute ethanol , Petroleum ether were rinsed and dried in turn. The weight of bridging ligand Ⅳ-21 obtained as dark red powder was 5.6g, and the yield was 63%.
[0048]Then weigh 3 mmol of bridging ligand IV-21, add 30 mmol of anhydrous potassium carbonate, then add 60 ml of ethylene glycol ether to the system, replace nitrogen three times, add 3,7-diethyl-4 under nitrogen protection system, 12 mmol of 6-nonanedione, reflux for 24 hours, cool down, filter with suction, wash with alcohol, and dry. Using dich...
Embodiment 3
[0052] Preparation of compound Ⅰ-27, its specific synthesis steps are as follows:
[0053]
[0054] Under nitrogen protection system, weigh 24 mmol of ligand II-27, IrCl 3 ·3H 2 O 10mmol was put into the reaction system, a mixed solution of 210ml ethylene glycol ether and 70ml ultrapure water was added, refluxed for 30 hours under the nitrogen protection system, then cooled to room temperature, a precipitate was precipitated, the precipitate was suction filtered, water, absolute ethanol , Petroleum ether were rinsed and dried in turn. The weight of bridging ligand Ⅳ-27 obtained as dark red powder was 5.5g, and the yield was 66%.
[0055] Then weigh 3mmol of bridging ligand IV-27, add 30mmol of anhydrous potassium carbonate, add 60ml of ethylene glycol ether to the system, replace nitrogen three times, add 3,7-diethyl-4 under nitrogen protection system, 12 mmol of 6-nonanedione, reflux for 24 hours, cool down, filter with suction, wash with alcohol, and dry. Using dichlo...
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