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Preparation method of polymer with aggregation-induced rare earth luminescence characteristics

A technology of rare earth luminescence and aggregation induction, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of small absorption coefficient, sensitized rare earth ion luminescence, low luminous efficiency, etc., and achieve the effect of structural stability

Active Publication Date: 2020-01-10
SHAANXI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the absorption coefficient of trivalent rare earth ions in the ultraviolet region is very small and the luminous efficiency is low, organic polymer ligands with strong absorption in the ultraviolet region are required as "antennas" to transfer the excited state energy through non-radiative transitions. The emission state of rare earth ions is transmitted to the emission state of rare earth ions, thereby sensitizing the luminescence of rare earth ions, which is the antenna effect

Method used

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  • Preparation method of polymer with aggregation-induced rare earth luminescence characteristics
  • Preparation method of polymer with aggregation-induced rare earth luminescence characteristics

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preparation example Construction

[0024] A preparation method of a polymer with aggregation-induced rare earth luminescence characteristics of the present invention, specifically comprising the following steps:

[0025] Step 1, preparing 4'-(4-isopropenyl-phenoxy)-[2,2'; 6',2"] terpyridine;

[0026] 1-Chloro-4-vinylbenzene and 1-(6-acetyl-4-hydroxy-pyridin-2-yl)-ethanone were mixed and dissolved in THF at a molar ratio of 1:1, and the mixture was stirred at room temperature After 24 to 48 hours of reaction, 1-[4-isopropenyl-6-(2-pyridin-1-yl-acetyl)-pyridin-2-yl]-2-pyridin-1-yl-ethanone was obtained; Add 2 times as much pyridine as 1-chloro-4-vinylbenzene and iodine crystals equivalent to 1-chloro-4-vinylbenzene to continue the reaction, and stir the mixture for 30 to 60 minutes to form a light yellow solid as 1-[ 4-isopropenyl-6-(2-pyridin-1-yl-acetyl)-pyridin-2-yl]-2-pyridin-1-yl-ethanone; then add an equivalent amount of 1-chloro-4- For the crotonaldehyde of vinylbenzene, add ammonium acetate 5 times that...

Embodiment 1

[0033]20mmol 1-chloro-4-vinylbenzene and 20mmol 1-(6-acetyl-4-hydroxy-pyridin-2-yl)-ethanone were mixed and dissolved in 20mL tetrahydrofuran, and the mixture was stirred at room temperature for 24 hours after reaction 1-[4-Isopropenyl-6-(2-pyridin-1-yl-acetyl)-pyridin-2-yl]-2-pyridin-1-yl-ethanone is obtained. Then add 40mmol pyridine and 20mmol iodine crystals to continue the reaction, and stir the mixture for 30 minutes to form a light yellow solid as 1-[4-isopropenyl-6-(2-pyridin-1-yl-acetyl)-pyridine-2- Base]-2-pyridin-1-yl-ethanone, then add 20mmol crotonaldehyde, add 0.1mol ammonium acetate three times (30 minutes each time) into the reaction solution, and then reflux the solution for 12 hours. The resulting light yellow solid collected by filtration is 4'-(4-isopropenyl-phenoxy)-[2,2'; 6',2"] terpyridine. Take 0.2mmol 4'-(4-isopropenyl -Phenoxy)-[2,2'; 6',2"]terpyridine and 0.05mmol of azobisisobutyronitrile were mixed and stirred at 45°C for 3 hours, then 0.06mmol of...

Embodiment 2

[0036] 25mmol 1-chloro-4-vinylbenzene and 25mmol 1-(6-acetyl-4-hydroxy-pyridin-2-yl)-ethanone were mixed and dissolved in 20mL tetrahydrofuran, and the mixture was stirred at room temperature for 36 hours after reaction 1-[4-Isopropenyl-6-(2-pyridin-1-yl-acetyl)-pyridin-2-yl]-2-pyridin-1-yl-ethanone is obtained. Then add 50mmol pyridine and 25mmol iodine crystals to continue the reaction, the mixture was stirred for 45 minutes to form a light yellow solid as 1-[4-isopropenyl-6-(2-pyridin-1-yl-acetyl)-pyridine-2- Base]-2-pyridin-1-yl-ethanone. Then 25 mmol of crotonaldehyde was added, and 0.125 mol of ammonium acetate was added three times (with an interval of 30 minutes each time) into the reaction solution, and the solution was refluxed for another 18 hours. The resulting light yellow solid collected by filtration is 4'-(4-isopropenyl-phenoxy)-[2,2'; 6',2"]terpyridine. Take 0.3mmol 4'-(4-isopropenyl -Phenoxy)-[2,2'; 6',2"]terpyridine product and 0.075mmol of azobisisobutyro...

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Abstract

The invention discloses a preparation method of a polymer with aggregation-induced rare earth luminescence characteristics. The preparation method specifically comprises the following steps: step 1, preparing 4 '-(4-isopropenyl-phenoxy)-[2, 2'; 6 ', 2' '] terpyridyl; step 2, synthesizing a coordination polymer according to a product obtained in the step 1, and 3, preparing a terbium metal polymeraccording to a product obtained in the step 2. The metal polymer structure prepared using the preparation method is stable in structure, low in toxicity, and possesses amphipathy.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a preparation method of a polymer with aggregation-induced rare earth luminescence characteristics. Background technique [0002] In the process of scientific development of polymer materials, people are not only satisfied with the inherent characteristics of polymer materials, but pay more attention to special properties such as high and low temperature resistance, aging resistance, excellent electrical properties and some special functions such as light, electricity, Research and development of magnetic and acoustic special materials. Rare earths have optical, electrical, and magnetic properties due to their particular electronic structures. These properties are a powerful driving force for people to prepare rare earth metal polymer materials. Rare earth metal polymers show the following advantages: (1) high brightness and good chemical stability; (2) doping with diffe...

Claims

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Application Information

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IPC IPC(8): C08F220/54C08F212/14C08F8/42C09K11/06
CPCC08F220/54C08F8/42C09K11/06C09K2211/182C08F212/14
Inventor 李新平张召陈彦欣
Owner SHAANXI UNIV OF SCI & TECH