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Fluorescent copolymer microsphere and preparation method thereof

A copolymer and fluorescence technology, applied in chemical instruments and methods, luminescent materials, etc., to achieve the effect of high fluorescence intensity, good compatibility, and not easy to dissociate

Inactive Publication Date: 2018-06-08
HUNAN CHENLI NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned existing technologies have made fluorescent nanomaterials widely used, but there are still deficiencies and defects in terms of fluorescence intensity, fluorescence aging, biocompatibility, and solvent compatibility, which can be improved by new methods

Method used

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  • Fluorescent copolymer microsphere and preparation method thereof
  • Fluorescent copolymer microsphere and preparation method thereof
  • Fluorescent copolymer microsphere and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A fluorescent copolymer microsphere, in parts by weight, is prepared by the following steps:

[0029] (1) Synthesis of modified fluorescent monomer: under nitrogen protection, 10.0 parts of 2-naphthylamine, 5.0 parts of 9-phenanthrene phenol , 0.5 parts of triethanolamine, and 100.0 parts of toluene were added to the reactor to dissolve evenly, and 4.0 parts of acryloyl chloride were slowly added dropwise, and the drop was completed in 1 hour, and continued to reflux at 80°C for 4 hours. After filtering the insoluble matter, the solution was rotary evaporated, and the solvent was removed, washed and dried Modified fluorescent monomer.

[0030] (2) Dispersion polymerization of fluorescent copolymer microsphere dispersion liquid: 10.0 parts of modified fluorescent monomers in step (1) are dissolved in 30.0 parts of styrene, 0.5 parts of polyvinylpyrrolidone and 50.0 parts of water are added, Disperse evenly at high speed through a disperser and record it as liquid a; Dis...

Embodiment 2

[0033] A preparation method of fluorescent copolymer microspheres, in parts by weight, prepared by the following steps:

[0034] (1) Synthesis of modified fluorescent monomer: under nitrogen protection, in a reaction kettle equipped with a stirrer, a condenser, a constant pressure feeding device and a thermometer, 25.0 parts of 9-phenanthramine, 1.0 part of triethylamine, Add 100.0 parts of ethyl acetate to the reactor to dissolve evenly, slowly drop in 6.0 parts of p-styreneformyl chloride, drop it in 1 hour, continue to reflux at 90°C for 5 hours, filter the insoluble matter, spin evaporate the solution, remove the solvent, wash and dry to obtain Modified fluorescent monomer.

[0035] (2) Dispersion polymerization fluorescent copolymer microsphere dispersion liquid: Dissolve 15.0 parts of the modified fluorescent monomer in step (1) in 30.0 parts of styrene, add 0.6 parts of TX305 and 60.0 parts of water, and disperse evenly through a disperser at high speed Record as liqui...

Embodiment 3

[0038] A preparation method of fluorescent copolymer microspheres, in parts by weight, prepared by the following steps:

[0039] (1) Synthesis of modified fluorescent monomer: under nitrogen protection, in a reactor equipped with a stirrer, condenser, constant pressure feeding device and thermometer, 15.0 parts of 9-phenanthrene phenol, 10.0 parts of 9-phenanthramine , 1.2 parts of picoline, and 100.0 parts of xylene were added to the reactor to dissolve evenly, and 10.0 parts of methacryloyl chloride were slowly dropped in, and the dripping was completed in 1.2 hours, and continued to reflux at 100°C for 4 hours, after filtering the insoluble matter, the solution was rotary evaporated and the solvent was removed , washed and dried to obtain a modified fluorescent monomer.

[0040](2) Dispersion polymerization fluorescent copolymer microsphere dispersion liquid: dissolve 15.0 parts of the modified fluorescent monomer in step (1) in 30.0 parts of styrene, add 1.0 parts of polyv...

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Abstract

The invention relates to a fluorescent copolymer microsphere and a preparation method thereof. The preparation method comprises: first, enabling a small-molecule fluorescent monomer containing amino or hydroxyl groups to be unsaturated, and then, co-polymerizing a small-molecule unsaturated monomer containing fluorescent groups with styrene to obtain the fluorescent copolymer microsphere. Therefore, the fluorescent groups are tightly bonded to polystyrene resin through chemical bonds, the fluorescent copolymer microsphere has good compatibility with solvents such as aromatic hydrocarbons, chlorinated hydrocarbons, aliphatic ketones and esters, and has high fluorescent intensity; moreover, the fluorescent groups are not easy to dissociate, and the fluorescent aging is long-lasting. The fluorescent copolymer microsphere provided by the invention can be widely applied to the fields of fluorescent probe detection technologies, fluorescent chemical sensors, nonlinear optical devices, fluorescent ink, fluorescent additives and the like.

Description

technical field [0001] The invention relates to a polymer microsphere, in particular to a fluorescent copolymer microsphere and a preparation method thereof, belonging to the field of fluorescence technology. technical background [0002] Fluorescent small molecules are often easy to fall off during application and have poor compatibility with the substrate. For example, the traditional polymer dyeing process often cannot meet the requirements. Compared with fluorescent small molecules, fluorescent polymers have their own characteristics: chromophores are chemically bonded in polymers and are not easy to fall off; chromophores are evenly distributed, stable in content, and have good luminescence and light-conducting properties. Therefore, it is necessary to study the The method of introducing fluorescent small molecules into polymer chains can solve the problems of easy falling off and uneven distribution of fluorescent small molecules. Fluorescent polymers are high molecul...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F220/54C08F212/14C09K11/06
CPCC08F212/08C09K11/06C09K2211/1007C09K2211/1011C09K2211/1416C09K2211/1425C08F220/54C08F212/14
Inventor 朱佳媚
Owner HUNAN CHENLI NEW MATERIAL CO LTD
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