Hyperbranched polyaminoester capable of emitting multicolor fluorescence and preparation method thereof

A technology of polyurethane and terminal hydroxyl hyperbranching, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of single chromatogram, low fluorescence intensity, low quantum yield, etc., and achieve simple synthesis process and high fluorescence intensity , good biodegradability

Inactive Publication Date: 2018-11-02
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such polymers generally have problems such as single chromatogram (mainly blue light), low fluorescence intensity, and low quantum yield.

Method used

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  • Hyperbranched polyaminoester capable of emitting multicolor fluorescence and preparation method thereof
  • Hyperbranched polyaminoester capable of emitting multicolor fluorescence and preparation method thereof
  • Hyperbranched polyaminoester capable of emitting multicolor fluorescence and preparation method thereof

Examples

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Effect test

example 1

[0034] The preparation method of hydroxyl-terminated hyperbranched polyurethane: under the protection of nitrogen, citric acid and N-methyldiethanolamine are reacted at a molar ratio of 1:1.6, and the raw materials are dissolved at 120 ° C ~ 145 ° C, and the total mass of the reactants is added 0.5% p-toluenesulfonic acid, gradually increase the temperature to 160°C, and react for 4 hours. Then react for 4 hours under negative pressure environment, and the product is a blood-red viscous liquid. Next, the product was dissolved in water, precipitated by adding acetone, filtered, and vacuum-dried to obtain a hydroxyl-terminated hyperbranched polyurethane.

example 2

[0036] The preparation method of hydroxyl-terminated hyperbranched polyurethane: under the protection of nitrogen, citric acid and N-methyldiethanolamine are reacted at a molar ratio of 1:2.0, and the raw materials are dissolved at 120 ° C ~ 145 ° C, and the total mass of the reactants is added With 0.8% p-toluenesulfonic acid, gradually increase the temperature to 140°C, react for 6 hours, and then react for 6 hours under a negative pressure environment, and the product is a blood-red viscous liquid. Next, the product was dissolved in water, precipitated by adding acetone, filtered, and vacuum-dried to obtain a hydroxyl-terminated hyperbranched polyurethane.

example 3

[0038] The preparation method of hydroxyl-terminated hyperbranched polyurethane: under the protection of nitrogen, citric acid and N-methyldiethanolamine are reacted at a molar ratio of 1:2.2, and the raw materials are dissolved at 120 ° C ~ 145 ° C, and the total mass of the reactants is added With 0.1% p-toluenesulfonic acid, gradually increase the temperature to 160°C, react for 4 hours, and then react for 4 hours in a negative pressure environment, and the product is a blood-red viscous liquid. Next, the product was dissolved in water, precipitated by adding acetone, filtered, and vacuum-dried to obtain a hydroxyl-terminated hyperbranched polyurethane.

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Abstract

The invention relates to hyperbranched polyaminoester capable of emitting multicolor fluorescence and a preparation method thereof. Citric acid and N-methyldiethanolamine (or malic acid and triethanolamine) are used as raw materials to be synthesized into the hyperbranched polyaminoester by a simple controllable polycondensation method. The synthesized hyperbranched polyaminoester does not containbenzene rings and only contains ester groups; the biodegradation is easy; the hyperbranched polyaminoester can emit the multicolor fluorescence. The synthesized hyperbranched polyaminoester can emitbright fluorescence of different colors (including red, yellow, blue and the like) under the irradiation of different wavelength ultraviolet light. The method has the characteristics that the synthesis process is simple and convenient; the process is controllable; the environment-friendly effect is achieved and the like; the three-waste pollution is little; the product stability is high; the toxicity is low; the biodegradability is high; the fluorescence intensity is high; the colors are rich; the application range is wide, and the like.

Description

technical field [0001] The invention belongs to the field of polymer luminescent materials, and relates to a hyperbranched polyurethane capable of emitting multicolor fluorescence and a preparation method thereof. Background technique [0002] In recent years, fluorescent polymers without traditional π bonds have attracted more and more attention from academia and industry. The advantage of good compatibility is that it can emit fluorescence under certain conditions, and has a wide range of applications in the fields of cell fluorescence imaging, gene and drug controlled release. As a new type of polymer, aliphatic polyurethane has the advantages of environmental friendliness and good biocompatibility, and has been widely used in the fields of nanomaterials, coatings and drug sustained release. Compared with linear polyurethane, hyperbranched polyurethane has a clear three-dimensional structure and a large number of terminal active groups, and is a very good tool for gene d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/685C08G63/87C09K11/06
CPCC08G63/6854C08G63/87C08G2230/00C09K11/06C09K2211/14
Inventor 颜红侠原璐瑶白利华贾文宁
Owner NORTHWESTERN POLYTECHNICAL UNIV
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