Click-crosslinked fluorescent polymer and its preparation and application

A fluorescent polymer and fluorescent technology, applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of automatic detection limitations, etc., and achieve the effect of rapid and efficient response, simple method, and unique fluorescent characteristics

Active Publication Date: 2022-01-18
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mechanical and mechanical properties of fluorescent polymer materials affect its application range. In the field of fluorescent detection, fluorescent polymers with poor mechanical and mechanical properties are difficult to be prepared into films to be used in conjunction with optical instruments, which limits automated detection.

Method used

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  • Click-crosslinked fluorescent polymer and its preparation and application
  • Click-crosslinked fluorescent polymer and its preparation and application
  • Click-crosslinked fluorescent polymer and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Weigh 10.374g of citric acid and 37.337g of castor oil in a 500ml round-bottomed flask, raise the temperature to 140°C under stirring, connect to a water pump to evacuate, and react for 2h; lower the temperature to 120°C, add 0.654g half For cystine, replace it with an oil pump to evacuate, control the reaction temperature to 120°C, and continue the reaction for 4 hours, then stop heating and let the polymer cool down naturally;

[0037] (2) The cooled polymer in (1) is equally divided into two parts, respectively placed in two 250ml three-necked flasks, and 0.091g of 1-pentyn-3-alcohol and 0.094g of 2-azidoethanol, the temperature was raised to 60°C under stirring, reacted for 3h, and cooled to obtain fluorescent polyesters containing azido groups and fluorescent polyesters containing alkynyl groups (two kinds of fluorescent polyesters containing different click groups). polymer);

[0038] (3) 1ml of copper sulfate solution (containing 0.05g of copper sulfate) and...

Embodiment 2

[0040] (1) Weigh 10.374g of citric acid and 37.337g of castor oil in a 500ml round-bottomed flask, raise the temperature to 140°C under stirring, connect to a water pump to evacuate, and react for 2h; lower the temperature to 120°C, add 0.654g half For cystine, replace it with an oil pump to evacuate, control the reaction temperature to 120°C, and continue the reaction for 4 hours, then stop heating and let the polymer cool down naturally;

[0041] (2) The polymer after cooling in (1) is divided into two parts equally, is placed in two 250ml three-necked flasks respectively, in two three-necked flasks, add 1-pentyne-3 alcohol 0.188g and 2 -Azidoethanol 0.188g, raise the temperature to 60°C under stirring, react for 3h, and cool to obtain fluorescent polyester containing azido group and fluorescent polyester containing alkyne group (two polymers containing different click groups) things);

[0042] (3) 1ml of copper sulfate solution (containing 0.05g of copper sulfate) and 1ml ...

Embodiment 3

[0044] (1) Weigh 10.374g of citric acid and 37.337g of castor oil in a 500ml round-bottomed flask, raise the temperature to 140°C under stirring, connect to a water pump to evacuate, and react for 2h; lower the temperature to 120°C, add 0.654g half For cystine, replace it with an oil pump to evacuate, control the reaction temperature to 120°C, and continue the reaction for 4 hours, then stop heating and let the polymer cool down naturally;

[0045] (2) The polymer after cooling in (1) is divided into two parts equally, is placed in two 250ml three-necked flasks respectively, in two three-necked flasks, add 1-pentyne-3 alcohol 0.273g and 2 - Azidoethanol 0.282g, raise the temperature to 60°C under stirring, and react for 3h to obtain fluorescent polyesters containing azido groups and fluorescent polyesters containing alkyne groups (two polymers containing different click groups) ;

[0046] (3) 1ml of copper sulfate solution (containing 0.05g of copper sulfate) and 1ml of sodiu...

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Abstract

The invention belongs to the technical field of fluorescent polymers, and discloses a click-crosslinked fluorescent polymer and its preparation and application. Methods: 1) react citric acid with castor oil to obtain a reaction product; continue to react amino acid with the reaction product to obtain bio-based fluorescent polyester; 2) react bio-based fluorescent polyester with 2-azidoethanol, Obtain a fluorescent polyester containing an azide group; react the bio-based fluorescent polyester with 1-pentyne-3-alcohol to obtain a fluorescent polyester containing an alkyne group; 3) under the action of a catalyst, the azide-containing Click reaction of fluorescent polyester with fluorescent polyester containing alkyne groups to obtain click-crosslinked fluorescent polymer. The method of the invention is simple, and the prepared polymer has good mechanical properties and unique fluorescence characteristics, and can be used in the fields of fluorescence imaging, tissue engineering, drug delivery, cell imaging and the like.

Description

technical field [0001] The invention belongs to the technical field of fluorescent polymer modification, and specifically relates to a click-crosslinked fluorescent polymer and its preparation and application. Background technique [0002] After Kolb, Finn and Sharpless first proposed the concept of click chemistry in 2001, click chemistry has developed rapidly since then. The click reaction has the characteristics of easy availability of raw materials, mild reaction conditions, high product yield, good selectivity, and easy separation and purification. It is widely used in polymer modification and crosslinking to enhance the mechanical properties of materials and expand polymer materials. The scope and field of application and use. [0003] Fluorescent polymer materials have been widely used in the fields of dyes, chemical brighteners, photooxidants, coatings, chemical and biochemical analysis, anti-counterfeiting marks, drug tracers and lasers due to their unique fluoresc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/24C08L67/04C09K11/06C08G63/91C08G63/06C08G63/78
CPCC08J3/246C09K11/06C08G63/912C08G63/06C08G63/78C08J2367/04C08J2467/02C09K2211/1466
Inventor 胡剑青田锦衡周曦周子潇
Owner SOUTH CHINA UNIV OF TECH
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