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A purple fluorescent material containing tert-butylfluorene

A technology of violet fluorescence and tert-butyl fluorene is applied in the field of fluorescent materials to achieve the effects of increasing electron mobility, improving luminous intensity and stability, and increasing electron cloud density

Active Publication Date: 2015-09-16
湖州优研知识产权服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the luminescence stability and luminescence efficiency of fluorene materials are still a problem to be solved.
Therefore, it is an effective method to improve its performance by introducing different groups

Method used

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  • A purple fluorescent material containing tert-butylfluorene
  • A purple fluorescent material containing tert-butylfluorene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Pd(PPh 3 ) 4 (0.069g, 0.06mmol) and potassium carbonate (0.829g, 6mmol) were placed in a 150mL three-necked round-bottomed flask, and 40mL of toluene, 30mL of ethanol and 10mL of water were added; the three-necked round-bottomed flask was evacuated and filled with nitrogen, and repeated Operated 3 times; the mixture was refluxed at 80°C for 2 days under the protection of nitrogen; after the reaction, cooled and separated, the aqueous phase was extracted with dichloromethane, the organic phase was combined, and the organic phase was washed with saturated brine for 3 Afterwards, use magnesium sulfate to dry, filter to get the filtrate; spin dry the solvent in vacuo to get the solid powder of the crude product, then use petroleum ether as eluting agent and adopt column chromatography to separate and purify to obtain 2,7-bis(4-tert-butyl) Phenyl-9,9-diethylfluorene.

Embodiment 2

[0023] Take 2,7-dibromo-9,9-diethylfluorene (0.648g, 2mmol), 4-tert-butylphenylboronic acid (1.068g, 6mmol), Pd(PPh 3 ) 4 (0.231g, 0.2mmol) and potassium carbonate (1.659g, 12mmol) were placed in a 250mL three-necked round-bottomed flask, and 80mL of toluene, 70mL of ethanol and 10mL of water were added; the three-necked round-bottomed flask was evacuated and filled with nitrogen, and repeated Operation 3 times; the mixture was refluxed at 85°C for 3 days under the protection of nitrogen; after the reaction, the liquid was cooled and separated, the aqueous phase was extracted with dichloromethane, the organic phase was combined, and the organic phase was washed with saturated brine for 2 Afterwards, use magnesium sulfate to dry, filter to get the filtrate; spin dry the solvent in vacuo to get the solid powder of the crude product, then use petroleum ether as eluting agent and adopt column chromatography to separate and purify to obtain 2,7-bis(4-tert-butyl) Phenyl-9,9-diethyl...

Embodiment 3

[0025] Take 2,7-dibromo-9,9-diethylfluorene (0.6479g, 2mmol), 4-tert-butylphenylboronic acid (1.424g, 8mmol), Pd(PPh 3 ) 4 (0.092g, 0.08mmol) and potassium carbonate (2.764g, 20mmol) were placed in a 250mL three-necked round-bottomed flask, and 60mL of toluene, 40mL of ethanol and 10mL of water were added; the three-necked round-bottomed flask was evacuated and filled with nitrogen, and repeated Operated 3 times; the mixture was refluxed at 90°C for 4 days under the protection of nitrogen; after the reaction, cooled and separated, the aqueous phase was extracted with dichloromethane, and the organic phase was combined, and then the organic phase was washed with saturated brine 2 times, then dried with magnesium sulfate, filtered to get the filtrate; the solvent was spin-dried in vacuo to obtain the solid powder of the crude product, and then separated and purified by column chromatography with petroleum ether as eluent to obtain 2,7-bis(4-tert-butyl ) phenyl-9,9-diethylfluore...

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Abstract

The invention discloses a purple fluorescent material containing tertiary butyl fluorene and a preparation method thereof. The fluorescent material is characterized in that it is a fluorene organic compound with a molecular formula C37H42; the fluorescent material is synthesized by mixing and reacting 2,7-dibromo-9,9-diethyl fluorene, 4-tert butyl benzoboric acid, tetrakis(triphenylphosphine)palladium and potassium carbonate according to a certain proportion; and the synthesis has simple steps and reaches yield of 60%-92%. Tert butyl benzoboric acid and fluorene are subjected to a cross-coupling reaction to prepare the organic compound with fluorescence properties; and the conjugated big pi bond rich in electrons is conducive to electron transition and energy transfer, so that the compound has good photoelectric activity namely high luminous efficiency, and has potential application prospect.

Description

technical field [0001] The invention relates to a fluorescent material, in particular to a purple fluorescent material containing tert-butylfluorene. Background technique [0002] With the advancement of science and technology, people pay more and more attention to the research of fluorescent substances. Fluorescence phenomenon refers to the fact that fluorescent substances absorb light of a certain wavelength and immediately emit light of different wavelengths, and most of these lights have relatively bright colors, such as green, orange, yellow, etc. Fluorescent materials are generally classified into inorganic fluorescent materials and organic fluorescent materials. Common inorganic fluorescent materials include sulfide-based fluorescent materials, aluminate-based fluorescent materials, and rare earth fluorescent materials. Organic fluorescent materials are divided into organic polymer fluorescent materials and organic small molecule fluorescent materials. There are ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C13/567C07C1/32C09K11/06
Inventor 阮倩倩李星赵亚云赵秀华康晶燕刘素娟
Owner 湖州优研知识产权服务有限公司
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