1228632-34-5Relevant articles and documents
Method for separating halogenated impurities from organic light-emitting material
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Paragraph 0033-0034; 0037-0038, (2021/04/21)
The invention discloses a method for separating halogenated impurities from an organic light-emitting material. The method comprises the steps: carrying out Suzuki reaction by utilizing halide, coupling with a boric acid ester raw material with an amino-containing side chain, and converting halogenated impurities into a compound containing an amino polar group; and furthermore, ionizing the compound containing the amino polar group by acid, so as to dissolve the compound in strong polar solvents such as alcohol and the like to realize remarkable solubility difference with an organic light-emitting material, and thus obtaining material purification. According to the method, the halogenated impurities in the organic light-emitting material are converted into the compound containing the amino polar groups, efficient separation can be achieved by well utilizing the solubility difference between the compound containing the amino polar groups and the organic light-emitting material, and then the purity of the organic light-emitting material is improved. According to the method, the halogenated impurities are removed in a targeted manner, the negative influence of halogen on an organic light-emitting device can be eliminated, the device efficiency is greatly improved, and the service life is greatly prolonged.
Green light compound based on dibenzophenazine, preparation method and device thereof
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Paragraph 0050-0052, (2021/08/07)
The invention belongs to the technical field of photoelectric display devices, and particularly relates to a green light compound based on dibenzophenazine, a preparation method and a device thereof. The invention provides the green light compound based o
Pyridoimidazole derivatives as well as preparation method and application thereof
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Paragraph 0106; 0113-0115, (2021/06/22)
The invention discloses pyridoimidazole derivatives as well as a preparation method and application thereof. The pyridoimidazole derivatives with two D-pi-A structures are synthesized on the basis that pyridoimidazole serves as an electron acceptor system by means of the electron donating property of phenanthroimidazole/diphenylamine. The pyridoimidazole derivatives can serve as photoinitiators, and the two photoinitiators both have longer conjugated chain lengths, so that the photon absorption cross section is increased, the photoinitiators can initiate polymerization reaction at the wavelength of 365 nm, have higher polymerization efficiency, and can be widely applied to the field of ultraviolet curing.