A blue-light material made of acetylene-bridged fluorene and anthracene derivatives and its preparation method
A technology of anthracene derivatives and blue light materials, applied in the fields of luminescent materials, chemical instruments and methods, halogenated hydrocarbon preparation, etc., can solve the problems of device performance gap, reduce the practical application value of anthracene in OLEDs, etc., to increase conjugation and Effects of rigidity, high thermal stability, and high luminous efficiency
Inactive Publication Date: 2020-03-17
GUANGZHOU INST OF TECH
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Problems solved by technology
[0003] To sum up, the problems existing in the prior art are: due to the planar structure of anthracene molecules, crystallization between molecules is easy to occur, and there is still a large gap in device performance compared with red and green light devices, thus greatly reducing the anthracene Practical application value in OLEDs
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[0030] Such as figure 1 As shown, the preparation method of the acetylene bridged fluorene and anthracene derivative blue light material provided by the embodiment of the present invention includes the following steps:
[0031] S101: Add compound intermediate 2 (0.863g, 1.3mmol), compound intermediate 3 (0.808g, 4mmol), Pd(PPh 3 ) 2 C1 2 (18.2mg, 0.26mmol), CuI (24.7mg, 0.13mmol), PPh 3 (34.1mg, 0.13mmol) and a magnetic stirrer, evacuated nitrogen and repeated 4 times;
[0032] S102: Under the protection of nitrogen, add the mixed solvent (toluene:triethylamine=60mL:20mL) that has been deoxygenated by nitrogen for 30min with a syringe, and react at a constant temperature of 80°C for 48h under nitrogen atmosphere. Stop the reaction, filter, wash the filter residue 3 times with toluene, wash the filtrate 2 times with water and saturated brine respectively, dry over anhydrous sodium sulfate, evaporate the solvent to dryness to obtain the crude product;
[0033] S103: The cru...
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The invention belongs to the technical field of blue-light emitting material preparation, and discloses an acetylene bridged fluorene and anthracene derivative blue-light emitting material and a preparation method thereof. The method comprises the following steps: a compound intermediate product 2, a compound intermediate product 3, Pd(PPh3)2Cl2, CuI, PPh3 and a magnetic stirring bar are added into a single-necked flask with a volume of 250mL, and vacuumizing and nitrogen introducing are repeated for 4 times; under the protection of a nitrogen gas, a mixed solvent subjected to oxygen removal by introducing a nitrogen gas for 30min is added by a syringe, and a reaction is performed for 48h under a nitrogen gas atmosphere; the reaction is stopped, filtration is performed, filter residues arewashed for 3 times with toluene, a filtrate is separately washed twice with water and saturated brine, drying is performed by anhydrous sodium sulfate for overnight, and a solvent is evaporated to dryness to obtain a crude product; and the crude product is subjected to chromatography by applying a silica gel column, concentration is performed, the concentrated material is dropped into absolute methanol for recrystallization, and therefore the yellow solid is obtained. According to the invention, two n-octyl long aliphatic chains on fluorene can increase the solubility of the material in an organic solvent, and the acetylene linked fluorene and anthracene structure can increase the conjugacy and rigidity of the material.
Description
technical field [0001] The invention belongs to the technical field of blue light material preparation, in particular to a blue light material made of acetylene-bridged fluorene and anthracene derivatives and a preparation method. Background technique [0002] In the research of OLEDS, the blue light material plays a very important role. It is not only one of the three primary colors necessary for full-color display, but also can be used as the host material. Doping other light-emitting materials into the blue light-emitting material can obtain Green, red or white light devices. At present, the research progress of blue light materials is slower than that of green and red light materials. Red light and green light materials for OLEDs have been commercially applied on a large scale, while blue light materials require a wide band gap and their electron affinity. To match the sum potential (EA) and the first ionization energy (lP), the molecular design requires that the chemic...
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IPC IPC(8): C07C2/88C09K11/06C07C13/573
CPCC07C1/26C07C2/88C07C13/573C07C17/12C07C17/269C09K11/06C09K2211/1011C07C15/28C07C25/22
Inventor 谢鹏波袁宁宁李善吉欧阳英
Owner GUANGZHOU INST OF TECH