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a kind of so 2 Polyheterocyclic compounds and their applications
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A compound, five-membered heterocycle technology, applied in the field of organic electroluminescence display, to achieve the effects of improving optoelectronic properties, high thermal stability, and good carrier mobility
Active Publication Date: 2021-11-02
北京燕化集联光电技术有限公司
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However, the lifetime of the excited state of phosphorescent materials is long, and triplet-triplet annihilation and triplet-polaron inter-annihilation are easy to form when the triplet exciton concentration is high.
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Embodiment 1
[0041] The synthesis of embodiment 1 intermediate M1
[0042]
[0043] The synthetic route is as follows:
[0044]
[0045] Including the following specific steps:
[0046](1) In a 2L three-necked flask equipped with mechanical stirring, add 4-chloro-1-fluoro-2-nitrobenzene (17.5g, 0.1mol), 2-bromo-4-chloroaniline (30.8g, 0.15mol ), stirred, protected by argon, heated up to 180°C, and kept warm for more than 30 hours. During the reaction, the color of the reaction solution gradually turned red, and finally dark red. After the reaction, the organic phase was separated, extracted, dried, column chromatographed, and the solvent was spin-dried to obtain 30 g of orange-red solid M-01 with a yield of 83%.
[0047] (2) In a 1L three-necked flask equipped with mechanical stirring, add M-01 (36.0g, 0.1mol), sodium sulfide nonahydrate (96g, 0.4mol), ethanol (200mL), water (100mL), nitrogen protection, Heated to reflux, reflux reaction for 3 hours, and ended the reaction. The o...
Embodiment 2
[0053] The synthesis of embodiment 2 intermediate M2
[0054]
[0055] use replace respectively Selecting a suitable material ratio, other raw materials and steps are the same as in Example 1 to obtain intermediate M2.
[0056] Product MS (m / e): 399.98; Elemental analysis (C 19 h 10 Cl 2 N 2 O2S): theoretical value C: 56.87%, H: 2.51%, N: 6.98%; measured value C: 56.66%, H: 2.27%, N: 6.74%.
Embodiment 3
[0057] The synthesis of embodiment 3 intermediate M3
[0058]
[0059] use replace Selecting a suitable material ratio, other raw materials and steps are the same as in Example 1 to obtain intermediate M3.
[0060] Product MS (m / e): 399.98; Elemental analysis (C 19 h 10 Cl 2 N 2 O2S): theoretical value C: 56.87%, H: 2.51%, N: 6.98%; measured value C: 56.63%, H: 2.28%, N: 6.72%.
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Abstract
The invention belongs to the technical field of organic electroluminescence display, and in particular relates to a novel SO-containing 2 Polyheterocyclic compounds and their applications in organic electroluminescent devices. The novel SO-containing 2 The structure of the polyheterocyclic compound is shown in formula (I). This type of compound has good thermal stability, and its application in OLED devices as a green light host material can effectively improve the photoelectric performance of the device. containing the SO 2 OLED devices of polyheterocyclic compounds can be applied in display or lighting fields.
Description
technical field [0001] The invention belongs to the technical field of organic electroluminescence display, and in particular relates to a novel SO-containing 2 Organic materials with polyheterocyclic structures and their applications in organic electroluminescent (OLED) devices. Background technique [0002] The application of organic electroluminescent (OLED) materials in information display materials, organic optoelectronic materials and other fields has great research value and bright application prospects. With the development of multimedia information technology, the performance requirements of flat panel display devices are getting higher and higher. At present, the main display technologies include plasma display devices, field emission display devices and organic electroluminescent display devices (OLED). Among them, OLED has a series of advantages such as self-luminescence, low-voltage DC drive, full curing, wide viewing angle, and rich colors. Compared with liqu...
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