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Red-light organic luminous material and use

A light-emitting material and organic technology, applied in the field of red light organic light-emitting materials and their preparation, can solve the problems of poor stability, poor film formation, lack of electron transport ability, etc., and achieve the effects of high thermal stability and high luminous efficiency

Inactive Publication Date: 2007-08-29
上海吉鲁光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most red light-emitting materials are used as dyes in electroluminescent devices, which is mainly related to the properties of the material itself. The common problems of red light-emitting materials include: poor film formation, poor stability and lack of electron transport ability etc.

Method used

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  • Red-light organic luminous material and use
  • Red-light organic luminous material and use
  • Red-light organic luminous material and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Synthesis of 2-(4-(N,N'-dimethyl)anilino)-3-phenoxyflavone (A):

[0032] The first step is the synthesis of 4-(N,N’-dimethylamino)benzaldehyde:

[0033] The reaction route is as follows:

[0034]

[0035]The newly distilled phosphoryl chloride (0.023 mol) was added to a 50 ml pear-shaped flask containing 9 ml of freshly distilled and dried dimethylformamide (DMF) at 0°C until completely dissolved. 0.02 mol (N,N'-dimethyl)aniline was dissolved in 3.5 ml of newly distilled and dried dimethylformamide (DMF) and added to the above-mentioned pear-shaped flask to prepare a reaction solution. The reaction solution was heated to about 95°C, stirred for 2 hours, the temperature was lowered to room temperature and poured into 30 ml of ice water. Adjust the system to pH=7 with saturated sodium acetate, a light green precipitate appears, and place it in the refrigerator overnight. The precipitate was filtered and washed with water and n-hexane, and the precipitate was dissolved in et...

Embodiment 2

[0045] The synthesis method of 2-(4-(N,N'-dimethylamino)phenyl)-3-biphenoxy-7-fluoroflavonoid (B) refers to Example 1. The first step yield is 79%. The yield in the second step was 70%, and the yield in the third step was 80%. IR(cm -1 ): 3282, 3105, 2942, 1718, 1624, 1508, 1438, 1376, 965, 732; MS (EI) m / z (%): 454 (M+, 8); Anal.calcd for C 29 H 24 FNO 3 : C76.65, H5.28, N3.08; found C76.71, H5.25, N3.03.

Embodiment 3

[0047] Synthesis method of 2-(4-(N,N'-dimethylamino)phenyl)-3-p-phenoxyphenoxy-7-(N,N'-dimethylamino)flavonoid (C) Referring to Example 1, the yield in the first step was 79%, the yield in the second step was 50%, and the yield in the third step was 69%. IR(cm -1 ): 3241, 3054, 2978, 1721, 1614, 1538, 1448, 1354, 951, 714; MS (EI) m / z (%): 495 (M+, 16); Anal.calcd forC 31 H 30 N 2 O 4 : C75.30, H6.07, N5.67; found C75.25, H56.10, N5.71.

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Abstract

The invention relates to an organic emitting material that has the structure of formula I. There are three steps to make the material: making R2CHO from phosphorus oxychloride, aromatic base compound and dimethyl formamide; making 2- aryloxy ketone from R2CHO and ortho-aryloxy aryl group ethyl ketone; making 3-aryloxy flavones from hydrogen peroxide and 2-aryloxy ketone. The invention could be used to make electric generating emitting component or molecule probe.

Description

Technical field [0001] The invention belongs to the technical field of organic light-emitting materials, and particularly relates to a red light-emitting organic light-emitting material and a preparation method and application thereof. Background technique [0002] Organic electroluminescence (EL) is a new type of technology with broad application prospects. The scientificity and practicality contained in it have attracted wide attention from the scientific and business circles from the beginning. Since 1987 (Tang CW, Van Slyke S A. Appl Phys Lett, 1987, 51: 913-915.), organic electroluminescence technology has achieved unprecedented development, which is mainly manifested in two aspects: one is the emergence of A large number of organic semiconductor materials used in this technology are produced, which is inseparable from the richness of organic compounds. At the same time, the abundance of materials also provides a broad space for choosing excellent organic materials; the seco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06H05B33/14
Inventor 吕银祥郭鹏
Owner 上海吉鲁光电科技有限公司