- Compound and organic electroluminescent device
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The invention provides a novel organic electroluminescent material for an organic electroluminescent device, and the organic electroluminescent device using the novel organic electroluminescent material. The novel organic electroluminescent material provi
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Paragraph 0097-0100
(2020/03/02)
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- Compound and organic electroluminescent device
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The invention provides a novel compound, and particularly relates to a compound containing an anthracene structure connected with a heterocyclic structure and application of the compound in an organiclight-emitting device. The novel organic electroluminescent material, namely the compound of the invention is represented by a formula (I) which is described in the specification. The novel compoundprovided by the invention has optimized electron injection and transmission capability, good exciton blocking performance, and remarkable and excellent electron mobility, and shows good film-forming performance when being applied to an organic layer of the organic light-emitting device, so the efficiency and stability of an electron transmission layer can be improved. The device adopting the compound has the advantages of high luminous efficiency, low driving voltage and long service life.
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Paragraph 0064-0067
(2020/06/09)
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- A phenanthro imidazole symmetrical derivatives of the main material and electroluminescent device
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The invention relates to a phenanthroimidazole symmetric derivative host material. The structure of the host material is represented by formula I, and can be used to form an organic electroluminescent device with the advantages of high luminescence efficiency, low driving voltage, long life, high brightness and high color purity. In the formula I, R1 and R2 are respectively independently selected from the hydrogen atom, substituted or unsubstituted C1-C30 alkyl groups, C1-C30 cycloalkyl groups, C1-C30 saturated alkyl groups, substituted or unsubstituted C1-C30 alkyloxy groups, substituted or unsubstituted C6-C30 aryl groups, substituted or unsubstituted C6-C30 aryloxy groups, substituted or unsubstituted C6-C30 arylamino groups, substituted or unsubstituted C2-C30 heterocyclic groups, substituted or unsubstituted C6-C30 fused polycyclic groups, hydroxy groups, cyan groups or substituted or unsubstituted amino groups.
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Paragraph 0181-0186
(2019/04/06)
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- Bipyridyl derivative and application thereof
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The present invention provides a novel compound, which has a structure general formula represented by a formula (I), wherein Ar1 and Ar2 are independently selected from an aromatic hydrocarbon derivative group containing benzimidazoyl, an aromatic hydrocarbon derivative group containing a pyridine group, substituted or unsubstituted C6-C30 aromatic hydrocarbon, and a substituted or unsubstituted C6-C30 fused ring aromatic hydrocarbon group, and R1 and R2 are independently and respectively selected from H, C1-C12 aliphatic hydrocarbon radical, phenyl, substituted phenyl, naphthyl, substituted naphthyl, biphenyl and substituted biphenyl. According to the present invention, the compound has characteristics of stable character, simple preparation process, high luminous efficiency and high carrier mobility, and can be used for the electron transport layer of the electroluminescent element, and the device applying the compound has characteristics of significant driving voltage reducing and current efficiency improving. The formula (I) is defined in the instruction.
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Paragraph 0042; 0053-0055
(2019/08/06)
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- Boron-containig benzopyrenes derivatives, their preparation and organic electroluminescent device (by machine translation)
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The present invention relates to a 6-tritolyl-6H-6-bora benzo[cd]pyrene derivative represented by a formula (1), wherein substituents are described in an instruction. The present invention further relates to uses of the compound as an electron transportation material, and an organic electroluminescent device containing the compound. Formula (1).
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Paragraph 0104; 0108
(2016/10/07)
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- NITROGENOUS HETEROCYCLE DERIVATIVE AND ORGANIC ELECTROLUMINESCENT ELEMENT EMPLOYING THE SAME
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Provided is a material for an organic EL device realizing an organic EL device capable of having a high current efficiency even at a low voltage. Provided is a derivative of heterocyclic compound having a nitrogen atom represented by the following general formula (A-1) or (A-2). In the formulae, R 1a to R 5a each represent a substituent, Ar 1a to Ar 3a each represent a single bond or a divalent connecting group, and HAr represents a group represented by a general formula (A-3) or (A-4). R 6a to R 10a each represent a substituent.
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Page/Page column 49
(2008/06/13)
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