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Method for preparing glucose difunctional monomer magnetic molecularly imprinted polymer

A technology of magnetic molecular imprinting and bifunctional monomers, which is applied in the field of preparing glucose molecularly imprinted polymers, and can solve the problems that glucose molecularly imprinted polymers have not been reported.

Active Publication Date: 2016-01-20
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, there is no report on glucose molecularly imprinted polymers prepared by using bifunctional monomers

Method used

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  • Method for preparing glucose difunctional monomer magnetic molecularly imprinted polymer
  • Method for preparing glucose difunctional monomer magnetic molecularly imprinted polymer
  • Method for preparing glucose difunctional monomer magnetic molecularly imprinted polymer

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specific Embodiment approach 1

[0036] Embodiment 1: A method for preparing a glucose bifunctional monomer magnetic molecularly imprinted polymer according to this embodiment is carried out in the following steps:

[0037] 1. Preparation of aqueous superparamagnetic Fe 3 o 4 Nanoparticles: FeCl 3 ·6H 2 Dissolve O in ethylene glycol, ultrasonically treat until no solid exists, then add anhydrous sodium acetate, stir at a stirring speed of 200r / min~400r / min for 25min~35min, transfer to a stainless steel reaction kettle, and React for 11h-13h under the conditions of 180-220°C and stirring speed of 80r / min-120r / min, stop the reaction, perform magnetic separation and sedimentation with NdFeB magnets, pour out the upper liquid, and wash the obtained solid matter Treatment, the washing treatment is: first wash the solid matter with 95% ethanol for 3 times, and then wash the solid matter with deionized water for 3 times to obtain Fe 3 o 4 magnetic nanoparticles;

[0038] The FeCl 3 ·6H 2 The ratio of the mas...

specific Embodiment approach 2

[0057] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the FeCl described in step one 3 ·6H 2 The ratio of the quality of O to the volume of ethylene glycol is 13.5g: 500mL; the FeCl described in step one 3 ·6H 2 The mass ratio of O to anhydrous sodium acetate is 13.5:36. Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0058] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the volume ratio of hydrochloric acid described in step two and ethylene glycol described in step one is 1.2:5; The volume ratio of trisodium citrate to the ethylene glycol described in step 1 is 1.2:5. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a method for preparing a glucose difunctional monomer magnetic molecularly imprinted polymer, relates to a method for preparing a glucose molecularly imprinted polymer, and aims to solve the problem that a glucose molecularly imprinted polymer prepared from a difunctional monomer is not available at present. The method comprises the following steps: I, preparing aqueous superparamagnetism Fe3O4 nanoparticles; II, modifying the Fe3O4 nanoparticles; III, performing silanization on the Fe3O4 magnetic nanoparticles; IV, performing amination on the Fe3O4@SiO2 particles; V, preparing difunctional monomer magnetic nanoparticles; VI, synthesizing the glucose difunctional monomer magnetic molecularly imprinted polymer. The maximum saturated adsorbing capacity of Glucose@MIP to glucose is 9.111mg / g, the saturated adsorbing capacity of MNIPs is 3.112mg / g, the printing factor is up to 2.92, and after five times of repeated adsorption, the adsorbing capacity is only reduced by 5.9%.

Description

technical field [0001] The invention relates to a method for preparing glucose molecularly imprinted polymers. Background technique [0002] Molecular imprinting technology refers to the preparation of polymers with specific selectivity for a target molecule, which can selectively separate and enrich target molecules and their structural analogs from complex sample matrices, with specific recognition and selectivity. The synthesized molecularly imprinted polymers (Molecular imprinted polymers, MIPs) have the characteristics of predetermined structure and activity, specific recognition, long-term stability and easy implementation, and have broad application prospects in the fields of biosensors, separation and extraction, and environmental monitoring. Magnetic molecularly imprinted polymers (MMIPs) are polymers prepared by combining molecular imprinting technology with magnetic materials. Common benefits of imprinted polymers. Bifunctional monomers have shown a stronger sel...

Claims

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Application Information

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IPC IPC(8): C08F120/54C08K9/10C08K9/04C08K9/06C08K3/22
Inventor 杨鑫智康康徐鹏飞王静
Owner HARBIN INST OF TECH
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