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High-fluorescence quantum efficiency material based on terphenyl derivatives and preparation method thereof

A fluorescent quantum and terphenyl technology, which is used in the preparation of organic compounds, luminescent materials, ether preparation, etc., can solve the problem that organic semiconductor small molecule materials cannot have high fluorescence quantum efficiency at the same time.

Pending Publication Date: 2020-06-09
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a high fluorescent quantum efficiency material based on terphenyl derivatives and a preparation method thereof, to solve the problem that undoped organic semiconductor small molecule materials cannot simultaneously have high fluorescent quantum efficiency in solid state and solution state

Method used

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  • High-fluorescence quantum efficiency material based on terphenyl derivatives and preparation method thereof
  • High-fluorescence quantum efficiency material based on terphenyl derivatives and preparation method thereof
  • High-fluorescence quantum efficiency material based on terphenyl derivatives and preparation method thereof

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Embodiment 1

[0023] The structural formula of the high fluorescent quantum efficiency material based on terphenyl derivatives is shown in I:

[0024]

[0025] In this example, 2,5-dibromohydroquinone was obtained by reducing 2,5-dibromohydroquinone with bromoisoctane to obtain the product compound II with the structural formula shown in formula II, and then reacted with 4-cyanophenylboronic acid pinacol ester through Suzuki reaction to prepare Product Compound I.

[0026]

[0027] Specific steps are as follows:

[0028] Step 1, the synthesis of compound II, the reaction formula is:

[0029]

[0030] 2,5-dibromo-p-hydroxyphenol (1.6g, 6mmol), K 2 CO 3 (3.32g, 24mmol), under nitrogen protection, add 30mL of degassed dimethylformamide (DMF) to dissolve, and heat to 75°C while stirring; after stirring for 0.5h, add bromoisoctane ( 2.4g, 12mmol), stirred for 3h. After the reaction was finished, a large amount of water was added to the system, and the inorganic phase was extracted ...

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Abstract

The invention discloses a high-fluorescence quantum efficiency material based on terphenyl derivatives and a preparation method thereof, the material is a structural system containing terphenyl, the left and right ends of the material are terminated by cyano groups, and the upper and lower ends of the material are terminated by alkoxy end groups. According to the preparation method, a cyanophenylunit is connected with dialkoxy substituted bromobenzene for the first time, so that the problem that an undoped organic semiconductor small molecular material cannot have high fluorescence quantum efficiency at the same time in a solid state and a solution state is solved. The high-fluorescence quantum efficiency material based on the terphenyl derivative has fluorescence quantum efficiency of about 90% in a solid state and fluorescence quantum efficiency of about 100% in a solution state. The potential application value is realized in the aspects of biological probes, sensors, electroluminescent devices and the like.

Description

technical field [0001] The invention belongs to the technical field of luminescent materials, and in particular relates to a preparation method of a bisphenylene cyanide-substituted benzene material. Background technique [0002] Organic electroluminescent devices (OLEDs) have been widely used in full-color flat panel displays due to their excellent performance such as wide viewing angle, low driving voltage, high luminous efficiency, fast response speed, flexible display, and easy process operation. Compared with the performance and device stability of red and green light materials, the efficiency, lifetime and color purity of blue electroluminescent materials need to be further improved. There are still many challenges for the synthesis of multifunctional blue fluorescent materials to optimize emission efficiency, transport performance, charge balance injection, morphology, and thermodynamics. The exploration and research on organic π-conjugated materials began in the 197...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C253/30C07C255/54C09K11/06
CPCC07C253/30C07C255/54C07C41/16C09K11/06C09K2211/1007C07C43/225
Inventor 丁岩唐超蔡海同杨知遥
Owner NANJING UNIV OF POSTS & TELECOMM