Four-dentate ligand Pt complex used for OLED materials and using aza fluorene as base unit
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A tetradentate ligand and basic unit technology, applied in the field of complexes, can solve the problems of low luminous efficiency, short life, poor thermal stability, etc., and achieve the effects of high luminous efficiency, long life and good thermal stability
Inactive Publication Date: 2017-08-08
EVERDISPLAY OPTRONICS (SHANGHAI) CO LTD
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At present, compared with fluorescent materials, phosphorescent materials not only start late, but also have problems such as p
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Embodiment 1
[0046]The raw materials, acid-base catalysts, and solvents involved in the following preparation methods were all purchased from suppliers well-known to those skilled in the art, such as Bailingwei Technology and Sigma.
[0047] 1. The synthetic route of the tetradentate ligand Pt complex with azofluorene as the basic unit:
[0048]
[0049] 2. Preparation steps:
[0050] The first step: charge compound 1-1 (84g, 0.4mol, 1.0eq) into a 3L round bottom flask under nitrogen protection, and add anhydrous THF (1200ml), add t-BuOK (53.76 g, 0.48mol, 1.2eq). After completion, the mixture was stirred at 30 °C for 2 hr. Compound 1-2 (48g, 0.48mol, 1.2eq) dissolved in 800ml was slowly added dropwise.
[0051] After completion, the mixture was stirred at 50 °C for 2 hr. The reaction solution was spin-dried, and 600ml of deionized water and 600ml of ethyl acetate were added to the residue, followed by stirring at 30°C for 30min. The organic phase and the aqueous phase were separat...
Embodiment 2-9
[0062] Similarly, compounds L1, L2, L4, L5, L6, L7, L8, and L9 were all obtained from corresponding raw materials according to the synthesis method of compound L3.
[0063] Similarly, CPD1, 2, 4, 5, 6, 7, 8, and 9 are all obtained from corresponding raw materials according to the synthesis method of CPD3.
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Abstract
The present invention provides a four-dentate ligand Pt complex used for OLED materials and using aza fluorene as a base unit, wherein the structure is represented by a general formula (I) defined in the specification, R1-R8 are independently and respectively selected from hydrogen, alkyl, heteroalkyl, aryl or heteroaryl, X1 and X2 are independently and respectively selected from C and N, and preferably the four-dentate ligand Pt complex is a CNCN four-dentate ligand Pt complex. The present invention further provides the OLED material and the OLED device of the four-dentate ligand Pt complex using aza fluorene as a base unit. According to the present invention, with the application of the complex as the guest material in the light emitting material, the advantages of good thermal stability, high light emitting efficiency, long service life and the like can be provided; and the four-dentate ligand Pt complex can further be used in AMOLED industry.
Description
technical field [0001] The invention relates to a complex, in particular to a tetradentate ligand Pt complex with azofluorene as a basic unit for OLED materials. Background technique [0002] Organic light-emitting diodes (OLEDs), as a new display technology, show unparalleled advantages in all aspects of performance compared with existing display technologies, such as all-solid-state, self-luminous, high brightness, high Resolution, wide viewing angle (above 170 degrees), fast response, thin thickness, small size, light weight, flexible substrate can be used, low voltage DC drive (3-10V), low power consumption, wide operating temperature range, etc. It has a wide range of application markets, including lighting systems, communication systems, vehicle displays, portable electronic devices, high-definition displays, and even military fields. [0003] The simplest organic light-emitting diode has a single-layer sandwich structure, which is mainly composed of an anode, a catho...
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