Preparation method of magnetic covalent organic framework molecularly imprinted polymer for separating anthocyanin

A covalent organic framework, molecular imprinting technology, applied in the directions of alkali metal compounds, chemical instruments and methods, inorganic chemistry, etc., can solve the problem of low selectivity of separation fillers, and achieve the goal of improving separation efficiency, preventing collapse and ensuring accuracy. Effect

Inactive Publication Date: 2020-06-12
HARBIN INST OF TECH
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  • Application Information

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Problems solved by technology

[0004] The present invention provides a method for preparing a magnetic covalent organic framework molecularly imprinted polymer for separating anthocyanins in order to solve the technical problem of low selectivity of traditional separation fillers for separating anthocyanins

Method used

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  • Preparation method of magnetic covalent organic framework molecularly imprinted polymer for separating anthocyanin
  • Preparation method of magnetic covalent organic framework molecularly imprinted polymer for separating anthocyanin
  • Preparation method of magnetic covalent organic framework molecularly imprinted polymer for separating anthocyanin

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specific Embodiment approach 1

[0052] Embodiment 1: In this embodiment, a method for preparing a magnetic covalent organic framework molecularly imprinted polymer for separating anthocyanins is carried out according to the following steps:

[0053] 1. Superparamagnetic amino functionalized Fe 3 o 4 Preparation of magnetic nanoparticles: 13.50 g of FeCl 3 ·6H 2 O was added to 500mL of ethylene glycol, ultrasonicated at a frequency of 40kHz for 30min until completely dissolved, then 27g of anhydrous sodium acetate and 172mL of 1,6-hexamethylenediamine were added, and mechanically stirred at a stirring speed of 150rpm 30min until a reddish-brown solution is obtained, react the obtained reddish-brown solution at a temperature of 200°C for 6h, then carry out magnetic separation and sedimentation with a strong magnet, wash the separated solid matter, first wash 5 times with double distilled water, and then use After washing with ethanol for 5 times to remove unreacted substances, vacuum drying was carried out ...

specific Embodiment approach 2

[0055] Embodiment 2: This embodiment differs from Embodiment 1 in that: the functional monomer is p-diaminobiphenyl (BD), and the obtained magnetic covalent organic framework molecularly imprinted polymer is MCMIPs-BD. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0056] Embodiment 3: This embodiment is different from Embodiment 1 in that: the functional monomer is 3,3'-dihydroxybenzidine (DHBD), and the obtained magnetic covalent organic framework molecularly imprinted polymer is MCMIPs-DHBD. Other steps and parameters are the same as those in the first embodiment.

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Abstract

The invention discloses a preparation method of a magnetic covalent organic framework molecularly imprinted polymer for separating anthocyanin. The invention belongs to the field of molecularly imprinted polymers. The invention aims to solve the technical problem of low selectivity of the traditional separation filler for anthocyanin separation in the prior art. The method disclosed by the invention comprises the following steps: 1, synthesizing aminated magnetic nano Fe3O4-NH2; and 2, synthesizing seven magnetic covalent organic framework molecularly imprinted materials (MCMIPs) with C3G as atemplate molecule through a room-temperature synthesis method. The MCMIPs provided by the invention have magnetic responsiveness, high adsorption performance and excellent specificity, and are suitable for rapidly and purposefully fishing C3G from a complex sample matrix. According to the separation medium, the anthocyanin separation and purification steps are simplified, the separation and purification time is shortened, and the separation and purification efficiency is greatly improved.

Description

technical field [0001] The invention belongs to the field of molecularly imprinted polymers, and in particular relates to a preparation method of a magnetic covalent organic framework molecularly imprinted polymer for separating anthocyanins. Background technique [0002] Anthocyanin (AOC) belongs to flavonoids, composed of anthocyanin and sugar, and is a safe and non-toxic water-soluble pigment. In addition to being used as a pigment in food, anthocyanins also have many important biological activities. Studies have shown that so far, anthocyanins have the strongest antioxidant activity and can treat body damage and various diseases caused by oxidative stress. In addition, it can also resist radiation, anti-inflammation, anti-cancer, prevent diabetes, and protect eyesight. However, due to the variety of anthocyanins, cis-trans isomers, and poor stability, it has always been a difficult problem to separate and purify anthocyanin monomers. Monomers are difficult to obtain a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/26C08G83/00C08K9/04C08K3/22B01J20/22B01J20/30B01J20/28
CPCB01J20/06B01J20/226B01J20/28009B01J2220/4806B01J2220/4812C08G83/008C08J9/26C08J2201/0422C08J2387/00C08K3/22C08K9/04C08K2003/2275C08K2201/01C08K2201/011
Inventor 杨鑫赵倩玉
Owner HARBIN INST OF TECH
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