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Spirofluorene compound and light-emitting device thereof

The technology of a compound, spirobifluorene, is applied in the field of spirofluorene compounds and light-emitting devices, which can solve the problems of few achievements and achieve the effect of low HOMO value

Inactive Publication Date: 2017-07-14
AAC TECH NANJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Worldwide, many scientific research institutes are committed to developing such materials, but with little success

Method used

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  • Spirofluorene compound and light-emitting device thereof
  • Spirofluorene compound and light-emitting device thereof
  • Spirofluorene compound and light-emitting device thereof

Examples

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Embodiment Construction

[0040] Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present application and are not intended to limit the scope of the present application.

[0041] The present invention relates to a kind of spirobifluorene compound, and spirobifluorene compound is selected from the compound shown as I of general formula:

[0042]

[0043] Among them, Y 1 , Y 2 Each independently represents hydrogen, an electron-withdrawing group or an electron-donating group;

[0044] x 1 、X 2 At least one substituent is a substituent shown in formula II:

[0045]

[0046] M means -S-, -P-, -SO-, -SO 2 -, -S(=S)-, -S(=S)(=S)-, -PO-, -PO 2 -, -P(=S)-, -P(=S)(=S)-, -C(=O)-;

[0047] N 1 , N 2 , N 3 , N 4 Each independently represents a carbon atom or a nitrogen atom;

[0048] R a selected from hydrogen, halogen, C 1～30 Alkyl, hydroxyl substituted C 1～30 Alkyl or C 6～48 ...

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Abstract

The invention relates to the technical field of organic light-emitting materials and particularly relates to a spirofluorene compound and a light-emitting device thereof. A spirobifluorene compound is selected from a compound represented by formula I (shown in the description), wherein Y1 and Y2 respectively independently represent hydrogen, electron-withdrawing groups or electron-donating groups; at least one of X1 and X2 represents a substituent represented by formula II (shown in the description); M represents -S-, -P-, -SO-, -SO2-, -S(=S)-, -S(=S)(=S)-, -PO-, -PO2-, -P(=S)-, -P(=S)(=S)- and -C(=O)-; N1, N2, N3 and N4 respectively independently represent carbon atoms or nitrogen atoms; and n represents an integer of 0-4. The spirobifluorene compound disclosed by the invention has an A-D-A chemical structure, and a spatial dihedral angle close to 90 degrees is formed between an electron-donating D unit and an electron-withdrawing A unit, so that HOMO-LUMO track separation of a fluorescent material is beneficially thermally activated and delayed, so as to obtain ideal deltaEST.

Description

technical field [0001] The invention relates to the technical field of organic light-emitting materials, in particular to a spirofluorene compound and a light-emitting device thereof. Background technique [0002] According to the mechanism of electroluminescence, OLED materials are divided into fluorescent OLED materials and phosphorescent OLEDs. Existing OLED technology materials, phosphorescent luminescent materials can theoretically achieve 100% quantum luminous efficiency due to the heavy metal effect, especially in the red and green phosphorescent materials have made great progress. However, because the triplet excitons of phosphorescent materials are prone to quenching at high concentrations, in order to improve performance, a certain host-guest doping ratio needs to be maintained. [0003] Fluorescent OLED materials are purely organic materials that do not contain heavy metals. Therefore, in theory, they can only achieve an internal quantum efficiency of 25%, result...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C317/14C07D213/71C07F9/53C07F9/58C07D401/14C09K11/06H01L51/54H10K99/00
CPCC07C317/14C07D213/71C07D401/14C07F9/5325C07F9/58C09K11/06C09K2211/1014C09K2211/1011C09K2211/1007C09K2211/1029H10K85/624H10K85/654H10K85/6572C07C2603/94H10K85/60H10K50/11H10K2101/10H10K2101/20C07C2603/18C09K2211/1018H10K50/121
Inventor 谢再锋
Owner AAC TECH NANJING