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A preparation and measurement method of an achiral structure realizing circular dichroism

A measurement method, a technology of circular dichroism, applied in the field of preparation and measurement of achiral structures that realize circular dichroism, to achieve the effects of enhancing Raman scattering signals, enhancing circular dichroism, and measuring signal accuracy

Inactive Publication Date: 2018-08-17
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the way of using achiral structure to realize circular dichroism through the normal incidence of light has not been reported at home and abroad.

Method used

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  • A preparation and measurement method of an achiral structure realizing circular dichroism

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Experimental program
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Effect test

Embodiment 1

[0033] Prepare a 1cm*2cm glass piece a and two 1cm*1cm glass piece b, scrub them with detergent, put them into a beaker and use acetone to sonicate for 15 minutes, rinse the acetone with deionized water, and then use alcohol to sonicate for 15 minutes. Rinse the alcohol with deionized water, put it in deionized water and save it for later use; stack the two treated glass pieces b into a clean petri dish prepared in advance, pour deionized water into the petri dish, deionized water The liquid level is lower than the upper surface of the upper glass sheet b; mix the suspension of polystyrene beads with a diameter of 380nm and alcohol at a volume ratio of 1:1 to 5:1, the suspension of polystyrene beads and alcohol The mixing volume ratio is preferably 3:1, put it into the sample tube and ultrasonicate for 3 minutes; slowly inject the ultrasonically good polystyrene bead mixed solution into the upper surfaces of two glass slides b with a needle tube, and the polystyrene bead The s...

Embodiment 2

[0036] The entire preparation process and measurement method are the same as in Example 1, only the coating order is changed to counterclockwise order. Obtain the circular dichroism spectrum of the achiral structure coated in counterclockwise order, such as figure 1 shown.

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Abstract

A preparing and measuring method of an achiral structure achieving circular dichroism is disclosed. The method includes subjecting a polystyrene sphere template to evaporation deposition with an A material, a B material, a C material and a D material in order according to a clockwise or anti-clockwise rotating manner, wherein the A material is an insulating material, the B material is a semiconductor material, the C material and the D material are metal materials, and conductivity of the A material, conductivity of the B material, conductivity of the C material and conductivity of the D material increase in order. The circular dichroism can be obtained through measuring on a sample of the achiral structure through a normal incidence process. A signal obtained when the circular dichroism is achieved through the achiral structure through the normal incidence process is more accurate than a signal obtained when the circular dichroism is achieved through traditional achiral structures through an oblique incidence process. The sample of the achiral structure prepared by the method can be used for enhancing chirality information of biomolecules and adopted as a sensor device.

Description

technical field [0001] The invention relates to a method for preparing and measuring an achiral structure for realizing circular dichroism, which can be applied to information access, sensors, chiral separation membranes and other related fields. Background technique [0002] The word chirality is derived from Greek and means the symmetry of structure, which has important meaning in many disciplines. An object is said to be "chiral" if it is different from its mirror image, and its mirror image cannot be superimposed on the original object, just as the left and right hands are mirror images of each other and cannot be superimposed. Chirality is the basic characteristic of life process, and most of the organic molecules that make up living organisms are chiral molecules. [0003] According to the disclosed technology, circular dichroism (CD, circular dichroism) is a very important means to study chiral compounds. The positive, negative and spin spectra of the Cotton Effect a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/19C23C14/24
CPCC23C14/24G01N21/19
Inventor 张中月付统
Owner SHAANXI NORMAL UNIV
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