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Chiral recognition material and preparation method thereof

A technology for chiral recognition and chiral molecules, applied in the field of chiral recognition materials and their preparation, to achieve the effects of strong controllability, fast and easy process, easy large-area preparation and large-scale production

Active Publication Date: 2020-02-25
JINLING INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Currently, there are no literature and patents reporting such studies

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  • Chiral recognition material and preparation method thereof
  • Chiral recognition material and preparation method thereof
  • Chiral recognition material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0037] A preparation method of a chiral recognition material, the steps are as follows:

[0038] S1, add 0.01g of CaTiO with a particle size of 1-10μm 3 :Pr 3+ The long-lasting luminescent material is soaked in 20mL of 0.1mol / L silver nitrate solution, and 50W power is ultrasonicated for half an hour to make the metal solution and CaTiO 3 :Pr 3+ The surface of the long-lasting luminescent material is in full contact; the solution is placed in a microwave digestion instrument, and reduced for 5 minutes under a microwave power of 800W, so that the Ag nanoparticles are loaded on the CaTiO 3 :Pr 3+ On the surface of long-lasting luminescent materials, forming Ag nanoparticles and CaTiO 3 :Pr 3+ For the heterojunction of the long-lasting luminescent material, wash twice with distilled water and absolute ethanol to remove the residual Ag on the surface of the material + ions, the surface of CaTiO loaded with Ag nanoparticles 3 :Pr 3+ Long afterglow luminescent material;

[...

Embodiment 2

[0048] A preparation method of a chiral recognition material, the steps are as follows:

[0049] S1, add 0.01 g of CaTiO with a size of 1-10 μm 3 :Pr 3+ The long-lasting luminescent material is soaked in 20mL of 0.1mol / L tetrachloroauric acid aqueous solution, and 50W power is ultrasonicated for half an hour to make the tetrachloroauric acid aqueous solution and CaTiO 3 :Pr 3+ The surface of the long-lasting luminescent material is in full contact; the solution is placed in a microwave digestion instrument, and reduced for 5 minutes under a microwave power of 800W, so that the gold nanoparticles are loaded on the CaTiO 3 :Pr 3+ Long-lasting luminescent material surface, forming gold nanoparticles and CaTiO 3 :Pr 3+ Heterojunction of long-lasting luminescent materials; wash twice with distilled water and absolute ethanol to remove residual gold ions on the surface of the material, and obtain CaTiO with gold nanoparticles loaded on the surface 3 :Pr 3+ Long afterglow lumi...

Embodiment 3

[0057] A preparation method of a chiral recognition material, the steps are as follows:

[0058] S1, 0.01g of CaTiO with a particle size of 1-10μm 3 :Pr 3+ The long-lasting luminescent material is immersed in 20mL of 0.1mol / L potassium chloroplatinate aqueous solution, and 50W power is ultrasonicated for half an hour to make the potassium chloroplatinate aqueous solution and CaTiO 3 :Pr 3+ The surface of the long-lasting luminescent material is fully contacted; the solution is placed in a microwave digestion instrument, and reduced for 5 minutes under a microwave power of 800W, so that the platinum nanoparticles are loaded on the CaTiO 3 :Pr 3+ Long-lasting luminescent material surface, forming platinum nanoparticles and CaTiO 3 :Pr 3+ Heterojunction of long-lasting luminescent materials; wash twice with distilled water and absolute ethanol to remove the residual platinum ions on the surface of the material, and obtain CaTiO with gold nanoparticles loaded on the surface ...

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Abstract

The invention relates to the technical field of chiral recognition materials and particularly relates to a chiral recognition material and a preparation method thereof. The material comprises a long-afterglow luminescent material loaded with metal nanoparticles on the surface, and chiral cysteine which is self-assembled on the surfaces of the metal nanoparticles to form a chiral molecular layer. The heterojunction between the long-afterglow material and a chiral recognition material is utilized, long-life electrons are transferred from the long-afterglow material to the surface of the chiral recognition material, and a large number of long-life electrons are injected into the surface of the chiral recognition material, the current density on an electrode is effectively enhanced, and an electrochemical recognition signal is amplified. Meanwhile, the spin filtering effect of chiral molecules on electrons is utilized, the electrons are spin-polarized when flowing through the chiral molecular layer assembled on the surfaces of the metal nanoparticles, so an electromagnetic field on the surface of the electrode is changed, the acting force difference between L and D amino acid enantiomers in an electrolyte is amplified, and the detection sensitivity is improved.

Description

technical field [0001] The invention relates to the technical field of chiral recognition materials, in particular to a chiral recognition material and a preparation method thereof. Background technique [0002] Chiral molecules refer to molecules with a certain configuration or conformation that cannot be superimposed on each other with their mirror images. Chirality is closely related to life phenomena and significantly affects the properties of substances. For example, the R-configuration thalidomide molecule has a sedative or antitussive effect, while the S-configuration thalidomide molecule has a strong teratogenic effect. Due to the lack of understanding of chiral isomers, thalidomide, which has not been resolved into R and S configurations, has been abused, resulting in the birth of a large number of deformed children. Since then, chiral isomerism has attracted widespread attention. [0003] Amino acid is the most basic chiral enantiomer, L-amino acid is a basic uni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30G01N27/26G01N27/48C09K11/77
CPCG01N27/308G01N27/26G01N27/48C09K11/7703
Inventor 张文妍杨晓莉管航敏叶原丰郝凌云
Owner JINLING INST OF TECH
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