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Hyperbranched polymer containing crown ether and synthesis process therefor

A hyperbranched polymer and polymer technology, applied in the field of hyperbranched polymerization, can solve problems such as polymer methods not involving hyperbranching, and achieve high ion selectivity

Inactive Publication Date: 2006-09-27
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, although there are many types of synthetic hyperbranched polymers, there is no method for hyperbranched polymers containing crown ether rings.

Method used

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  • Hyperbranched polymer containing crown ether and synthesis process therefor
  • Hyperbranched polymer containing crown ether and synthesis process therefor
  • Hyperbranched polymer containing crown ether and synthesis process therefor

Examples

Experimental program
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Effect test

Embodiment 1

[0043] Embodiment 1, obtain hyperbranched polymer reaction process by 4,4'(5')-dibromomethyl dibenzo-18-crown-6(1) and 1,3,5-benzenetriol as follows: 4,4'(5')-Dibromomethyldibenzo-18-crown-6 (0.3 g, 0.55 mmol) was dissolved in 7.5 mL of dried, redistilled N,N-dimethylformamide ( DMF), stirred and dissolved under the protection of nitrogen, added 1,3,5-benzenetriol (58mg, 0.46mmol), added lithium hydroxide (67mg, 2.79mmol) under stirring, stirred at room temperature (RT=20°C) , point the TLC plate, the reaction is complete after 20h, and then continue to react for 5h. After the reaction, the reaction solution was concentrated to 2mL under reduced pressure, and 30mL of water was added to obtain a clear transparent brown solution, which was acidified with 5% dilute hydrochloric acid to pH=4-5, and a precipitate appeared. After standing overnight, it was filtered to obtain 335mg of the initial product , the initial product was dissolved in 5mL of DMF, precipitated with 30mL of di...

Embodiment 2

[0044]Embodiment 2, obtain the hyperbranched polymer reaction process by 4,4'(5')-dichloromethyl dibenzo-18-crown-6(2) and 1,3,5-benzenetriol as follows: 4,4'(5')-Dichloromethyldibenzo-18-crown-6 (0.25 g, 0.55 mmol) was dissolved in 5.5 mL of dried, redistilled N,N-dimethylformamide (DMF ), stirring and dissolving under the protection of nitrogen, adding (58mg, 0.46mmol) 1,3,5-benzenetriol, adding sodium hydroxide (111mg, 2.79mmol) under stirring, stirring the reaction at 50°C, pointing to a TLC plate, After 40h, the reaction was complete, and the reaction was continued for 8h. After the reaction, the reaction solution was concentrated to 2 mL under reduced pressure, and 30 mL of water was added to obtain a clear transparent brown solution, which was acidified with 5% dilute hydrochloric acid to pH=4-5, and a precipitate appeared, and was filtered after standing overnight to obtain 326 mg of the initial product , the initial product was dissolved in 5mL of DMF, precipitated w...

Embodiment 3

[0045] Example 3. In this example, hyperbranched polymer reaction is obtained by reacting 4,4'(5')-diaminodibenzo-18-crown-6(5) with 1,3,5-trimesic acid The procedure was as follows: 4,4'-diaminodibenzo-18-crown-6 (1.0 g, 2.56 mmol), 1,3,5-trimesic acid (488 mg, 2.23 mmol), 1.90 mL of pyridine and 40 mL Put N-methylpyrrolidone (NMP) into a 100mL Schlenk tube, stir to dissolve it under nitrogen protection, then add triphenyl phosphite (2mL, 7.68mmol), stir the reaction solution and heat up to 80°C for 3h, Then the reaction solution was poured into 120mL of methanol containing 2.5mL of concentrated hydrochloric acid, the product was precipitated in methanol, filtered to obtain 1.87 grams of crude product, the crude product was dissolved in 40mL of N-methylpyrrolidone (NMP), and precipitated with 150mL of methanol , After suction filtration, the product was washed with hot methanol and dried in vacuo to obtain 1.52 g of brown powdery solid. Yield = 76.61%, Mn = 18320, Mw = 28580...

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Abstract

The invention discloses a super-branching polymer with crown ether ring and synthesis method, which is characterized by the following: proceeding short-combining reaction of single benzo- crown ether or two benzo crown ether and 1, 3, 5-trisubstitution benzene to produce new pattern super-branching polymer with crown; possessing coordination property for crown ether; fitting for ionic selective electrode, chromatogram separation and functional material.

Description

technical field [0001] The invention belongs to the technical field of hyperbranched polymerization, in particular to a hyperbranched polymer containing a crown ether ring and the use of monobenzocrown or dibenzocrown containing two active groups and 1,3,5 trisubstituted benzene A condensation reaction occurs under the action of a condensation reagent to form a series of hyperbranched polymers containing crown ether rings. Background technique [0002] Compared with linear polymers, hyperbranched polymers have unique structures and properties. The synthesis of new hyperbranched polymers and their potential applications have received special attention. A variety of new polymer materials for special purposes can be prepared by synthesizing hyperbranched polymers with different structures and modifying their end groups. Hyperbranched polymers have broad application prospects in drug sustained release, functional film materials and adhesives, polymer processing aids, photoelec...

Claims

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Application Information

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IPC IPC(8): C08G59/00
Inventor 王敏灿张峻松张阿方史艳艳
Owner ZHENGZHOU UNIV
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