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Chiral metal organic framework polymer sensor as well as preparation and application thereof

A metal-organic framework and polymer technology, applied in the field of chiral metal-organic framework polymers and their preparation, and nano-functional materials, can solve the problems of difficulty in in-situ and online detection, long analysis time, and high instrument cost, and achieve process The effect of simple, simple detection operation, and simple preparation method

Inactive Publication Date: 2017-02-22
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, chromatography has been widely used to separate and analyze chiral compounds, but this method has certain shortcomings, such as high instrument cost, long analysis time, and it is particularly difficult to realize in-situ and online detection, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1 Preparation of reduced Schiff base ligand H 2 L

[0028] Add 8.9g of L-alanine and 5.6g of potassium hydroxide to 100mL of water; under stirring, add it to a mixture containing 12g of salicylaldehyde and 10 mL of ethanol; stir at room temperature for 30min; cool it in an ice bath, Add 4.6g NaBH after 30min 4 Continue to stir and react for 30min; React at room temperature until the solution turns from yellow to colorless; Regulate pH with hydrochloric acid to be 4.0; The mixed solution was recrystallized; the obtained crystals were washed three times with water and ethanol with a volume ratio of 1:1, and dried to obtain the ligand H 2 L, the yield is 67%.

Embodiment 2

[0029] Example 2. Preparation of Chiral Metal Organic Framework Polymer {[CuL] 2}n

[0030] Reduced Schiff base ligand H to 0.039 g 2Add 0.8 mL of water and 0.8 mL of LiOH aqueous solution with a mass fraction of 0.45% to L, ultrasonically dissolve at room temperature, and add 1.8 mL of CuAc with a mass fraction of 2% at 60°C while ultrasonically 2 solution, ultrasonicated at 150W for 3min, left to stand for 10min, centrifuged and washed 3 times with water to obtain green, rod-shaped chiral MOF crystal {[CuL] 2 (H 2 O)}n; heated at 110℃ for 2 h, the chiral MOF {[CuL] 2} n, the productive rate is 60%;

Embodiment 3

[0031] Example 3. Preparation of Chiral Metal Organic Framework Polymer {[CuL] 2}n

[0032] Reduced Schiff base ligand H to 0.039 g 2 Add 1.2 mL of water and 1.2 mL of LiOH aqueous solution with a mass fraction of 0.45% to L, ultrasonically dissolve at room temperature, and add 2.2 mL of CuAc with a mass fraction of 2% at 60°C while ultrasonically 2 solution, ultrasonicated at 150W for 5min, allowed to stand for 15min, centrifuged and washed 3 times with water to obtain green, rod-shaped chiral MOF crystal {[CuL] 2 (H 2 O)}n; heated at 110℃ for 4 h, the chiral MOF {[CuL] 2} n, the productive rate is 70%;

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PUM

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Abstract

The invention discloses a chiral metal organic framework polymer {[CuL] 2(H2O)} n sensor based on a chiral metal organic framework polymer, and a preparation and application thereof. An ultrasonic method is adopted for preparation; the method comprises the following steps: preparing chiral metal organic framework polymer crystal {[CuL] 2(H2O)} n, and carrying out thermal dehydration on the chiral metal organic framework polymer crystal {[CuL] 2(H2O)} n to obtain a chiral metal organic framework polymer {[CuL] 2} n; modifying an electrochemical chiral working electrode by using the {[CuL] 2} n to obtain the chiral metal organic framework polymer sensor; the sensor is used for detecting the content of enantiomers of D-(+)-tryptophan and L-(-) tryptophan. The chiral sensor prepared based on the material is simple in preparation method and easy to operate, and has a remarkable technical effect.

Description

technical field [0001] The invention discloses a chiral metal-organic framework polymer, a preparation method and application thereof, and belongs to the technical field of nano functional materials, metal organic complex nanomaterials and chiral sensing and detection. Background technique [0002] In recent years, the rational design and synthesis of metal-based frameworks (MOFs) has received extensive attention not only because of the wide variety of topological structures of these frameworks, but also because of their useful properties in adsorption, catalysis, fluorescence, magnetism, asymmetric catalysis, and so on. , has potential applications in sex-selective separation and nonlinear optics. Since chirality is an essential property in the process of life and biological evolution, the construction of chiral metal-organic frameworks has received special attention. Using chiral ligand molecules as initial reactants is the most direct and effective way to synthesize chir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/48G01N27/30G01N27/32
CPCG01N27/301G01N27/32G01N27/48
Inventor 匡轩闫涛孙旭张勇魏琴王欢王志玲王雪莹
Owner UNIV OF JINAN
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