- Preparation method of 2-(4-biphenyl)amino-9,9-dimethylfluorene
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The invention belongs to the field of organic synthesis and provides a preparation method of a novel liquid crystal material 2-(4-biphenyl)amino-9,9-dimethylfluorene. The preparation method is characterized in that fluorene is subjected to methylation with methyl iodide to obtain 9,9-dimethylfluorene, 9,9-dimethylfluorene is subjected to nitration with nitric acid to obtain 2-nitro-9,9-dimethylfluorene, 2-nitro-9,9-dimethylfluorene is subjected to hydrazine hydrate reduction to obtain 2-amino-9,9-dimethylfluorene, and 2-amino-9,9-dimethylfluorene is subjected to reaction with bromobiphenyl toobtain 2-(4-biphenyl)-amino-9,9-dimethylfluorene; the structure of the 2-(4-biphenyl)-amino-9,9-dimethylfluorene is characterized via 1H-NMR, 13C-NMR, IR and MS. The 2-(4-biphenyl)-amino-9,9-dimethylfluorene has good thermostability and high glass transition temperature and is applicable to hole transport materials in organic light-emitting devices.
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Paragraph 0017
(2019/07/04)
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- Imidazole derivatives [...] and its preparation method (by machine translation)
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This invention relates to a kind of a kind of [...] imidazole derivatives and method for preparing the same. The structure of this compound is the formula is: . This method is convenient, pervasive, economic. Type I in the organic photoelectric material and based on the analysis of the fluorescence detection has a broad application prospect in the field; in addition, because of such compounds are containing two nitrogen atom heterocyclic compound, has good biological activity, can also be used as a drug intermediate, preparing human, livestock anathematic drug. (by machine translation)
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- Dendrimer and organic light-emitting device using the same
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A dendrimer and an organic light-emitting device including an organic layer having the dendrimer.
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Page/Page column 25; 26; 37; 38
(2014/10/29)
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