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Organic luminescent material based on quinoxaline diamine skeleton and preparation method thereof

A quinoxaline diamine, luminescent material technology, applied in the directions of luminescent materials, organic chemistry, chemical instruments and methods, can solve the problems of insufficient safety performance and luminescent performance, and achieve environmental protection, simple operation and cost. low cost effect

Inactive Publication Date: 2013-12-18
NANYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in general, whether the luminescent materials studied are the luminescent materials of the new triplet quinoxaline iridium (Ⅲ) complex or the new poly(p-phenylene vinylene-quinoxaline copolymer), they have many shortcomings in safety performance. and luminous performance is not strong enough

Method used

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  • Organic luminescent material based on quinoxaline diamine skeleton and preparation method thereof
  • Organic luminescent material based on quinoxaline diamine skeleton and preparation method thereof
  • Organic luminescent material based on quinoxaline diamine skeleton and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0023] This a kind of compound based on quinoxaline diamine skeleton, its name and structural formula are as follows:

[0024]

[0025] 2,3-bis(2-phenyl)quinoxaline-6,7-diamine

[0026] The raw materials it uses are diphenylethanedione and 4,5-dinitro-o-phenylenediamine, and the specific reaction equation is as follows:

[0027]

[0028] The specific synthesis steps are as follows: take diphenyl ketone and 4,5-dinitro-o-phenylenediamine at a ratio of 1:1, put diphenyl ketone into 50 mL of ethanol, and 4,5-Dinitro-o-phenylenediamine was dissolved in a small amount of ethanol, and then added dropwise to the ethanol solution of diphenyl ketone. The catalyst was 2 mL of CH 3 COOH, heated and stirred to reflux, after 4h, filtered, dried, and recrystallized with ethanol to obtain brown solid 6,7-dinitro-2,3-bis(2-phenyl)quinoxaline. Dissolve 1 g of 6,7-dinitro-2,3-bis(2-phenyl)quinoxaline in 300 mL of ethanol, slowly add 8 mL of hydrazine hydrate dropwise, use 0.3 g of Pd / C...

Embodiment 2

[0033] A pentaerythritol chiral spiro compound, its name and structural formula are as follows:

[0034]

[0035] 2,3-bis(2-pyridyl)quinoxaline-6,7-diamine

[0036] The raw materials it uses are dipyridyl ethylene diketone and 4,5-dinitro-o-phenylenediamine, and the specific reaction equation is as follows:

[0037]

[0038] The specific synthesis steps are as follows: take dipyridyl ethylenedione and 4,5-dinitro-o-phenylenediamine at a ratio of 1:1, put the dipyridyl ethylene dione into 50 mL of ethanol, and 4,5-Dinitro-o-phenylenediamine was dissolved in a small amount of ethanol, and then added dropwise to the ethanol solution of dipyridyl ethanedione. The catalyst was 2 mL of CH 3 COOH, heated and stirred to reflux, after 6h, filtered, dried, and recrystallized with ethanol to obtain brown solid 6,7-dinitro-2,3-bis(2-pyridyl)quinoxaline. Dissolve 1 g of 6,7-dinitro-2,3-bis(2-pyridyl)quinoxaline in 300 mL of ethanol, slowly add 8 mL of hydrazine hydrate dropwise, u...

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Abstract

The invention discloses an organic luminescent material based on a quinoxaline diamine skeleton and a preparation method thereof. The luminescent material can emit different lights in different solvents; the luminescent material is obtained by carrying out condensation reaction on different substituents of ortho diketone and 4,5-binitro-o-phenylenediamine and then further reducing. The luminescent material can be used as a novel organic luminescent material; an environment-friendly synthetic route is selected partially in the synthetic process; not only is the cost low and the operation simple and direct, but also protection of the environment is facilitated; the organic luminescent material belongs to the domain of green chemistry.

Description

technical field [0001] The invention belongs to the technical field of organic luminescent materials, and relates to an organic luminescent material based on a quinoxaline diamine skeleton and a preparation method thereof. Background technique [0002] Photoluminescence refers to the phenomenon that an object relies on an external light source for irradiation to obtain energy and generate excitation leading to luminescence. It roughly passes through three main stages: absorption, energy transfer, and light emission. The absorption and emission of light both occur between energy levels. The transitions between all go through the excited state. Energy transfer is due to the motion of excited states. Photoluminescence can provide some information about the structure, composition and environmental atomic arrangement of some materials. It is a non-destructive and highly sensitive analysis method. If laser is applied to this type of analysis method, it can Going deeper into the ...

Claims

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Application Information

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IPC IPC(8): C09K11/06C07D241/42C07D401/14
Inventor 赵强毕冬琴于林涛张旭毛武涛
Owner NANYANG NORMAL UNIV