Tetradendete ligand Pt complex adopting azafluorene as base unit, used for OLED materials
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A tetradentate ligand and basic unit technology, applied in the field of complexes, can solve the problems of short life, poor thermal stability, and low luminous efficiency, and achieve the effects of long life, good thermal stability, and high luminous efficiency
Inactive Publication Date: 2017-07-11
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 poor thermal stability, low luminous efficiency, short life, and low color saturation. So far, it is a very challenging problem.
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Embodiment 1
[0045] 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.
[0046] 1. The preparation method of the intermediate
[0047] (1) Synthetic route:
[0048]
[0049](2) Preparation steps:
[0050] (2-a) Preparation of compound 1-2:
[0051] Into a 3L round bottom flask, charge compound 1-1 (2,N-Dimethoxy-N-methyl-benzamide) (78g, 0.4mol, 1.0eq) under nitrogen protection, and add anhydrous DCM (2000ml), NBS powder (178 g, 1 mol, 2.5 eq) was added at room temperature. After completion, the mixture was stirred at 30 °C for 16 hrs. The reaction solution was spin-dried, 600ml of deionized water and 600ml of ethyl acetate were added to the residue, and then stirred at 30°C for 30mins. The organic phase and the aqueous phase were separated, and the organic phase was successively washed 3 times with saturated aqueous sodi...
Embodiment 2-9
[0080] Similarly, it can be obtained according to the synthesis method of compound 2-6 through corresponding raw materials.
[0081] Similarly, CPD2, 3, 4, 5, 6, 7, 8, and 9 are all obtained from corresponding raw materials according to the synthesis method of CPD1.
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Abstract
The invention provides a tetradendete ligand Pt complex adopting azafluorene as a base unit, used for OLED materials. The complex is characterized in that the structure of the complex is represented by general formula (I) shown in the description; and in the formula (I), R1 to R8 are respectively independently selected from hydrogen, an alkyl group, a heteroalkyl group, an aryl group and a heteroaryl group, X1 is selected from C, N and O, and X2 is selected from C and N. The tetradendete ligand Pt complex preferably is an ONCN tetradendete ligand Pt complex. The invention also provides an OLED material and an OLED device of the tetradendete ligand Pt complex adopting azafluorene as base unit. The complex is applied to luminescent materials as a guest material, has the advantages of good thermal stability, high luminescence efficiency and long life, and can be further applied to the 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...
Claims
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