Method for preparing ZnS magnetic surface phosphorescent molecularly imprinted polymer

A technology of imprinting polymers and phosphorescent molecules, applied in chemical instruments and methods, luminescent materials, other chemical processes, etc., can solve problems such as limited selectivity, and achieve the effect of easy collection and dispersion, broad application prospects, and sensitive identification.

Inactive Publication Date: 2015-05-20
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional RTP and phosphorescent sensing systems have limited selectivity when the analyte and coexisting species respond with similar luminescence

Method used

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  • Method for preparing ZnS magnetic surface phosphorescent molecularly imprinted polymer
  • Method for preparing ZnS magnetic surface phosphorescent molecularly imprinted polymer
  • Method for preparing ZnS magnetic surface phosphorescent molecularly imprinted polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Fe modified by KH570 3 o 4 Preparation of:

[0031] In a 100 mL beaker, add 2.0 g FeCl 3 ·6H 2 O, 5.4 g CH 3 COONa and 80 mL of ethylene glycol, after stirring and mixing evenly, the solution was transferred to a reaction kettle lined with polytetrafluoroethylene, transferred to an oven, 200 o C was reacted for 8.0 h, the reaction product was magnetically separated, washed and dried, and set aside; 100 mg of the synthesized Fe 3 o 4 , ultrasonically dispersed in a mixed solution of 50 mL of ethanol and water (volume ratio: 4:1), added 5.0 mL of ammonia water under stirring conditions, and added 1.0 mL of KH570 after stirring evenly, reacted for 5.0 h, separated the product magnetically, washed and dried Dry and set aside.

[0032] (2) Preparation of KH570-modified Mn-doped ZnS:

[0033] In a 100 mL three-neck flask, add 1.797 g ZnSO 4 ·7H 2 O, 0.1 g MnCl 2 4H 2 O, 20 mL of distilled water, the resulting mixed solution was stirred at room temperature for ...

Embodiment 2

[0041] (1) Fe modified by KH570 3 o 4 Preparation of:

[0042] In a 100 mL beaker, add 2.0 g FeCl 3 ·6H 2 O, 4.9 g CH 3 COONa and 75 mL of ethylene glycol, after stirring and mixing evenly, the solution was transferred to a reaction kettle lined with polytetrafluoroethylene, transferred to an oven, 180 o C was reacted for 7.0 h, and the reaction product was magnetically separated, and the product was Fe 3 o 4 , Wash and dry, set aside. Take 100 mg of synthetic Fe 3 o 4 , ultrasonically dispersed in a mixed solution of 45 mL of ethanol and water (volume ratio: 4:1), added 4.0 mL of ammonia water under stirring conditions, stirred evenly, added 2.0 mL of KH570, reacted for 4.0 h, separated the product magnetically, washed and dried Dry and set aside.

[0043] (2) Preparation of KH570-modified ZnS

[0044] In a 100 mL three-neck flask, add 1.797 g ZnSO 4 ·7H 2 O, 0.08 g MnCl 2 4H 2 O, 20 mL of distilled water, the resulting mixed solution was stirred at room temper...

Embodiment 3

[0052] (1) Fe modified by KH570 3 o 4 Preparation of:

[0053] In a 100 mL beaker, add 2.0 g FeCl 3 ·6H 2 O, 6.1 g CH 3 COONa and 85 mL of ethylene glycol, stir and mix evenly, transfer the solution to a reaction kettle lined with polytetrafluoroethylene, transfer to an oven, 220 o C was reacted for 9.0 h, and the reaction product was magnetically separated, and the product was Fe 3 o 4 , Wash and dry, set aside. Take 100 mg of synthetic Fe 3 o 4 , ultrasonically dispersed in a mixed solution of 55mL ethanol and water (volume ratio: 4:1), add 6.0 mL ammonia water under stirring conditions, add 3.0 mL KH570 after stirring evenly, react for 6.0 h, magnetically separate the product, wash and dry ,stand-by.

[0054] (2) Preparation of KH570-modified ZnS

[0055] In a 100 mL three-neck flask, add 1.797 g ZnSO 4 ·7H 2 O, 0.12 g MnCl 2 4H 2 O, 20 mL of distilled water, the resulting mixed solution was stirred at room temperature for 20 min under nitrogen, then 5 mL of ...

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Abstract

The invention relates to a method for preparing a ZnS magnetic surface phosphorescent molecularly imprinted polymer. The method comprises the following steps: mixing Fe3O4-KH570 and ZnS-KH570 in acetonitrile, synthesizing 2, 4, 6-trichlorophenol by using a precipitation polymerization method to serve as a template molecule, and the core-shell type surface molecularly imprinted polymer with Fe3O4-KH570 nanospheres as a carrier, ZnS-KH570 as surface phosphorescent substance, acrylamide (AM) as a functional monomer, ethylene glycol dimethacrylate (EGDMA) as a crosslinking agent, 2,2-azodiisobutyronitrile (AIBN) as an initiator and acetonitrile as a solvent is used for optically detecting the 2, 4, 6-trichlorophenol; the prepared surface phosphorescent molecularly imprinted polymer has good optical properties and stability and has the capacity of selectively identifying the 2, 4, 6-trichlorophenol.

Description

technical field [0001] The invention relates to a ZnS quantum dot magnetic surface 2,4,6-trichlorophenol molecularly imprinted phosphorescence sensor and a preparation method and application thereof, belonging to the technical field of preparation of environmental functional materials. Background technique [0002] In recent years, magnetic nanoparticles have attracted more and more attention due to their potential application value in magnetic separation, biorecognition, bioimaging and drug release. The preparation of magnetic iron oxide into nanoparticles with special properties has attracted more and more attention. This is not only because magnetic nanoparticles have special significance in the basic theory of matter, but also have a wide range of uses in practical applications. As an excellent material, magnetic nanoparticles are widely used in the adsorption and separation of target molecules. More importantly, the magnetic nanoparticles can quickly gather together un...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/56C08F222/14C08F2/44C08K9/06C08K3/22C08K3/30C08J9/26B01J20/26B01J20/30C09K11/56C09K11/02
Inventor 李洪吉卫潇卢凯徐叶青郝桐帆李春香
Owner JIANGSU UNIV
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