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Preparation method for constructing two-dimensional ultra-long room-temperature phosphorescent material based on cation-pi action driving

A room temperature phosphorescence, two-dimensional material technology, used in luminescent materials, chemical instruments and methods, sustainable architecture, etc., can solve the problems of poor controllability and poor stability, and achieve the effects of good stability, high strength and great application prospects.

Active Publication Date: 2021-07-13
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0006] In order to avoid the deficiencies of the prior art, the present invention proposes a preparation method of two-dimensional ultra-long room temperature phosphorescent materials driven by cation-π interaction, which overcomes the problems of poor stability and poor controllability of current two-dimensional phosphorescent supramolecular materials

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  • Preparation method for constructing two-dimensional ultra-long room-temperature phosphorescent material based on cation-pi action driving
  • Preparation method for constructing two-dimensional ultra-long room-temperature phosphorescent material based on cation-pi action driving
  • Preparation method for constructing two-dimensional ultra-long room-temperature phosphorescent material based on cation-pi action driving

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preparation example Construction

[0034] A preparation method for constructing two-dimensional ultra-long room temperature phosphorescent materials driven by cation-π interaction. The room temperature phosphorescent materials are composed of 2,4,6-tris(9hydrogen-carbazol-9-yl)-1,3,5- The solid powder formed by the assembly of triazine and fluorescent pink B under the force of cation-π supramolecule, the phosphorescent color of the phosphorescent two-dimensional material can be changed by changing the different equivalents of the two components (between 1:0 and 0:1 ) ratio is adjusted, it is characterized in that the steps are as follows:

[0035] Step 1: Prepare the Schlenk tube, reflux the condenser, put it into a magnetic stirrer, weigh carbazole and place it in a bottle, add anhydrous tetrahydrofuran, seal it, remove oxygen from the solution through Schlenk technology, and place the reaction bottle under the protection of nitrogen atmosphere In a low-temperature reactor at -70 to -78°C, after the temperatur...

Embodiment 1

[0045] Step 1: Prepare a 100mL Schlenk tube, reflux the condenser, put it into a magnetic stirrer, weigh 0.84g of carbazole and place it in a bottle, add 10mL of anhydrous tetrahydrofuran, seal it, and remove oxygen from the solution by Schlenk technology, under the protection of nitrogen atmosphere Place the reaction bottle in a low-temperature reactor at -78°C. After the temperature of the reaction solution drops to -78°C, add 6mL of 2.5M n-butyllithium solution and react at -78°C for two hours; then add 306mg of trimeric chloride The anhydrous tetrahydrofuran solution of cyanide was slowly added dropwise to the reaction solution, and after the dropwise addition was complete, the reaction bottle was placed in an oil bath for reflux reaction for 12 hours.

[0046] Cool down to room temperature after the reaction, add 20mL of distilled water to the reaction bottle, and then stir for 2 hours. During this process, a large amount of yellow solid precipitates. Suction filtration, w...

Embodiment 2

[0054] Step 1: Prepare a 100mL Schlenk tube, reflux the condenser, put it into a magnetic stirrer, weigh 1.67g of carbazole and place it in a bottle, add 20mL of anhydrous tetrahydrofuran, seal it, and remove oxygen from the solution by Schlenk technology, under the protection of nitrogen atmosphere Place the reaction bottle in a low-temperature reactor at -78°C. After the temperature of the reaction solution drops to -78°C, add 12mL of n-butyllithium solution (2.5M n-hexane solution) and react at -78°C for two hours; Anhydrous tetrahydrofuran solution of cyanuric chloride (612 mg cyanuric chloride dissolved in 10 mL anhydrous tetrahydrofuran) was slowly added dropwise to the reaction solution, and after the addition was complete, the reaction bottle was placed in an oil bath for reflux reaction for 12 hours. Cool down to room temperature after the reaction, add 30mL of distilled water to the reaction bottle, and then stir for 2 hours. During this process, a large amount of yel...

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Abstract

The invention relates to a preparation method for constructing a two-dimensional ultra-long room-temperature phosphorescent material based on cation-pi action driving. The method is characterized in that a 2,4,6-tri(9H-carbazole-9-yl)-1,3,5-triazine monomer is a B3 monomer containing three degrees of functionality, commercial 2', 4', 5', 7'-tetrabromo-4, 5, 6, 7-tetrachloro-3', 6'-dihydroxy-spiro [isobenzofuran-1(3H),9'-(9H) xanthene]-3-one is an A2 monomer containing two sodium ions, the carbazole part of the 2,4,6-tri(9H-carbazole-9-yl)-1,3,5-triazine and the sodium cation of 2', 4', 5', 7'-tetrabromo-4, 5, 6, 7-tetrachloro-3', 6'-dihydroxy-spiro [isobenzofuran-1(3H),9'-(9H) xanthene]-3-one are assembled by using the two monomers through a grinding assembly method under the driving of cation-pi supramolecular force, so that a supramolecular two-dimensional material with high strength, good stability and ultra-long room-temperature phosphorescence emission is obtained, wherein the material has great application prospects in the aspects of multiple anti-counterfeiting, encryption, conductive materials, flexible electronic materials, self-repairing materials and the like.

Description

technical field [0001] The invention belongs to the field of supramolecular materials, and relates to a method for preparing a two-dimensional ultra-long room temperature phosphorescent material driven by cation-π interaction. Background technique [0002] The two-dimensional ultra-long room temperature phosphorescent material based on cation-π driven self-assembly is a new type of supramolecular two-dimensional material, which has high stability and modifiability, and can be used in various solvents, temperatures and complex mixed systems. can maintain good stability. It has great application prospects in anti-counterfeiting, conductive materials, flexible electronic materials, self-healing materials, etc. In addition, the synthesis of corresponding monomers is simple and efficient, and can be prepared on a gram-scale scale, so this method has a good reference value in the preparation of new two-dimensional supramolecular functional materials. [0003] Literature 1 "A. Cr...

Claims

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Application Information

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IPC IPC(8): C08G83/00C09K11/06
CPCC08G83/008C09K11/06C09K2211/145C09K2211/1466Y02B20/00
Inventor 田威秋帅何佳胡啸张仲香
Owner NORTHWESTERN POLYTECHNICAL UNIV
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