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A kind of a-π-d-π-a type indole[3,2-b]carbazole red light material and preparation method thereof

A 2-b, carbazole technology, applied in luminescent materials, chemical instruments and methods, organic chemistry, etc., can solve the problems of fluorescence quenching, increase process difficulty, increase cost, etc., and achieve the effect of strong fluorescence emission

Active Publication Date: 2018-07-03
ANHUI UNIVERSITY
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, with the planarization of the molecular structure, the increase of the π-conjugated area or the enhancement of intramolecular charge transfer, the intermolecular π-π interaction and dipole-dipole interaction are enhanced in the aggregated state, generating energy traps, non- Increased radiative transitions, resulting in fluorescence quenching
In the OLED preparation process, in order to overcome the concentration quenching effect, red light materials are mostly applied by doping, which greatly increases the cost and increases the difficulty of the process.

Method used

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  • A kind of a-π-d-π-a type indole[3,2-b]carbazole red light material and preparation method thereof
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  • A kind of a-π-d-π-a type indole[3,2-b]carbazole red light material and preparation method thereof

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Embodiment Construction

[0020] Embodiments of the present invention will be described in detail in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, combining detailed implementation methods and specific operating procedures, but the scope of protection of the present invention is not limited to the following the embodiment.

[0021] Such as figure 1 As shown, the preparation method of A-π-D-π-A type indole[3,2-b]carbazole red light material in this example, the synthesis steps are as follows:

[0022] In a 25 mL round bottom flask, add 218 mg 5,11-dihexyl-6,12-bis(4-methylphenyl)-2,8-diformylindole[3,2-b]carbazole, 386 mg After 1,3-indenedione, 2mL ethanol and 4mL tetrahydrofuran, drop 2 drops of triethylamine and 2 drops of glacial acetic acid, react at 70°C for 12h, stop the reaction and cool to room temperature, evaporate the solvent under reduced pressure, and pass the residue through column layer Analy...

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Abstract

The invention discloses an A-π-D-π-A type indole[3,2-b]carbazole red light material and a preparation method thereof, wherein the A-π-D-π-A type indole[ 3,2-b] The structural formula of the carbazole red light material is: the organic light emitting material of the present invention has high solid luminous efficiency, and the solid luminous wavelength is at 630nm, which belongs to pure red light emission, and has certain advantages in the field of organic light emitting diodes. Value.

Description

1. Technical field [0001] The invention relates to an organic small molecule red light material and a preparation method thereof, specifically an A-π-D-π-A type indole[3,2-b]carbazole red light material and a preparation method thereof . 2. Background technology [0002] Organic light-emitting diodes (Organic Light-Emitting Diode, OLED) have the advantages of wide viewing angle, low energy consumption, thinness and bendability, etc., and have received continuous attention from people. Organic optoelectronic functional materials are the basis of OLED development, which can be divided into red light materials, green light materials and blue light materials. Compared with green and blue light materials, red light materials are relatively scarce, because red light materials have a small band gap and poor stability. Realization of red light emission is generally achieved by improving the planarity of molecules and increasing the area of ​​π conjugation; or introducing electron ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D487/04C09K11/06
CPCC07D487/04C09K11/06C09K2211/1029
Inventor 杨家祥张高宾孔林何玄江蕾
Owner ANHUI UNIVERSITY