- Aromatic amine derivative based on spirofluorene and application thereof
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The invention discloses an aromatic amine derivative based on spirofluorene and application of the aromatic amine derivative in an organic light-emitting device, and belongs to the technical field oforganic photoelectric materials and devices thereof. The structure of the aromatic amine derivative is shown as a general formula (I) or a general formula (II), wherein R1 and R2 are independently hydrogen, linear chain or branched chain alkyl containing 1-12 carbons, a benzene ring, and a benzene ring substituted by linear chain or branched chain alkyl containing 1-12 carbons. The organic light-emitting device prepared by adopting the aromatic amine derivative as a hole transport material has the advantages of high brightness, high efficiency and good stability, and the performance of the OLED device can be effectively improved.
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Paragraph 0054-0059; 0061
(2020/07/27)
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- Compound using dibenzo cycloheptene as core and application thereof
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The invention discloses compounds with 5H-dibenzo[a,d]cycloheptene as cores and an application of the compounds to OLED (organic light-emitting diode) devices. The compounds with 5H-dibenzo[a,d]cycloheptene as the cores are characterized in that central position of a heptyl ring of each compound is linked with a nitrogen-containing branch chain through phenyl, biphenyl or naphthyl. The compounds are not prone to crystallization and have good film forming property and heat stability as well as proper HOMO and LUMO energy level, by means of structure optimization of the devices, photoelectric property of the OLED devices can be improved effectively, and the service life of the OLED devices can be prolonged effectively.
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Paragraph 0050-0059
(2020/11/11)
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