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Fluorenone pyridine green fluorescent material

A technology of fluorenone pyridine and green fluorescence, which is applied in the field of fluorenone pyridine green fluorescent materials, and can solve the problems of long-wave emission of excimer associations that are easy to form, affecting the chromaticity and color stability of emitted light, etc.

Active Publication Date: 2016-07-20
滨州市科创孵化器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the influence of the structure of fluorene and fluorenone itself, it is easy to form excimer associations and produce long-wave emission, which will affect the chromaticity and color stability of the overall emitted light in the device

Method used

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  • Fluorenone pyridine green fluorescent material
  • Fluorenone pyridine green fluorescent material
  • Fluorenone pyridine green fluorescent material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Take 3.0mmol of 2,7-diiodo-9-fluorenone, 6mmol of 4-pyridineboronic acid, 30mmol of sodium carbonate, and 0.15mmol of palladium acetate in a 150mL reaction device, and add 50mL of DMF and 5mL of water; place the reaction device at 150 The reaction was carried out at ℃ for 12 h; after the reaction was completed, the liquid was separated after the reaction liquid was cooled, the aqueous phase was extracted with dichloromethane, and the organic phase was combined, and then the organic phase was washed with saturated brine for 3 times, and then dried with anhydrous sodium sulfate. Filtrate; use a rotary evaporator to remove the organic solvent in the filtrate to obtain a solid powder, then use ethyl acetate as the eluent to separate and purify by column chromatography, and finally spin dry the ethyl acetate to obtain the fluorenone pyridine green fluorescence Material.

Embodiment 2

[0020] Take 3.0mmol of 2,7-diiodo-9-fluorenone, 9mmol of 4-pyridineboronic acid, 30mmol of sodium carbonate, and 0.15mmol of palladium acetate in a 150mL reaction device, and add DMF50mL and water 5mL; put the reaction device at 90 React at ℃ for 24 h; after the reaction is completed, separate the liquid after cooling the reaction solution, extract the aqueous phase with dichloromethane, and combine the organic phase, then wash the organic phase with saturated brine for 3 times, and then dry it with anhydrous sodium sulfate. Filtrate; use a rotary evaporator to remove the organic solvent in the filtrate to obtain a solid powder, then use ethyl acetate as the eluent to separate and purify by column chromatography, and finally spin dry the ethyl acetate to obtain the fluorenone pyridine green fluorescence Material.

Embodiment 3

[0022] Take 3.0mmol of 2,7-diiodo-9-fluorenone, 7mmol of 4-pyridineboronic acid, 30mmol of sodium carbonate, and 0.15mmol of palladium acetate in a 150mL reaction device, and add DMF50mL and water 5mL; put the reaction device at 120 The reaction was carried out at ℃ for 18 h; after the reaction was completed, the liquid was separated after the reaction liquid was cooled, the aqueous phase was extracted with dichloromethane, and the organic phase was combined, and then the organic phase was washed with saturated brine for 3 times, and then dried with anhydrous sodium sulfate. Filtrate; use a rotary evaporator to remove the organic solvent in the filtrate to obtain a solid powder, then use ethyl acetate as the eluent to separate and purify by column chromatography, and finally spin dry the ethyl acetate to obtain the fluorenone pyridine green fluorescence Material.

[0023] The fluorenone pyridine green fluorescent material prepared in the above examples is a powdery solid, and ...

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Abstract

The invention discloses a fluorenone pyridine green fluorescent material. The fluorenone pyridine green fluorescent material is characterized in that the fluorenone pyridine green fluorescent material is a fluorenone derivative with conjugate pyridine groups, and a molecular formula of the fluorenone pyridine green fluorescent material is C23H14N2O. The fluorenone pyridine green fluorescent material has the advantages that 2, 7-diiodo-9-fluorenone and 4-pyridine boric acid are synthesized by means of coupling reaction to obtain the fluorenone pyridine green fluorescent material, synthesis steps are simple, and the yield can reach 70%-90%; pyridyl is led into fluorenone pyridine, so that the photoelectric activity, namely, the luminous efficiency, of the fluorenone pyridine green fluorescent material can be greatly improved, and the fluorenone pyridine green fluorescent material which is used as an organic small-molecule fluorescent material has a potential application prospect in the field of organic light emitting devices and the like.

Description

technical field [0001] The invention belongs to the field of material chemistry, and in particular relates to a fluorenone pyridine green fluorescent material. Background technique [0002] Fluorescence usually occurs in molecules with a rigid plane and π-electron conjugated system. The degree of conjugation in the molecule is the main factor affecting the fluorescence performance of the material. Therefore, increasing the degree of π-electron conjugation in the molecule can effectively improve the molecular fluorescence luminescence efficiency . Fluorene and fluorenones have a rigid planar biphenyl structure, and contain a large conjugated system in the molecule. Fluorenone materials have high thermal stability, high fluorescence quantum efficiency of solid thin films, and wide band gap energy. It is an important class of fluorescent materials, and more importantly, fluorene compounds are easy to carry out structural modification. However, due to the influence of the stru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D213/50C09K11/06
CPCC07D213/50C09K11/06C09K2211/1011C09K2211/1029
Inventor 潘裕李星赵亚云
Owner 滨州市科创孵化器有限公司
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