Method for preparing circularly-polarized luminescent material with high luminescence dissymmetry factor

An asymmetric and circularly polarized technology, which is applied in the field of preparing circularly polarized luminescent materials with a high luminous asymmetry factor, can solve the problems of lengthy and complicated preparation process and low yield, and achieve simple method, low environmental dependence and high application promising effect

Inactive Publication Date: 2019-03-05
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the reported materials with circularly polarized luminescent properties all have very complex and specific molecular structures, and the preparation process is tedious and complicated, and the yield is low.

Method used

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  • Method for preparing circularly-polarized luminescent material with high luminescence dissymmetry factor
  • Method for preparing circularly-polarized luminescent material with high luminescence dissymmetry factor
  • Method for preparing circularly-polarized luminescent material with high luminescence dissymmetry factor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] In the present embodiment, the structural formula of formula a is as shown in the figure below:

[0065]

[0066] The specific steps are:

[0067] 1) Take a clean sample bottle, weigh 3 mg of the small organic molecule shown in formula a, pipette 700 μL of good solvent (DMF) to dissolve it completely, add 300 μL of poor solvent ultrapure water to obtain a white gel. Measure its CPL spectrum. CPL spectrum see attached figure 1 . After calculation, its g lum 5.81×10 -4 . It can be seen that the circularly polarized luminescence performance of the organic small molecule represented by formula a is low, and the circularly polarized luminescence is often not detected.

[0068] 2) Heat the sample bottle until the white gel is completely dissolved and becomes a transparent solution.

[0069] 3) Apply vortex mixing (intensity of 2500rpm), while controlling the system temperature, programmatically cool down to room temperature (about 25°C) at a rate of 10°C / min to obta...

Embodiment 2

[0071]

[0072] Take 0.12 mg of the dye molecule compound shown in formula b (the molar ratio of formula b to formula a is 0.05:1) and add it into the white suspension obtained in step 3) of Example 1 during the process of vortex mixing until formula a and Formula b can be mixed evenly. Measure its CPL spectrum. CPL spectrum see figure 2 . After calculation, the g of the composite system of formula a and formula b lum 4.67 x 10 -2 .

Embodiment 3

[0074] According to the steps of Example 2, only the dye molecule compound shown in formula b is replaced with the dye molecule compound shown in formula c below:

[0075]

[0076] image 3 is the CPL spectrum of the composite system of formula a and formula c. After calculation, its g lum is 6.47×10 -2 .

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Abstract

The invention discloses a method for preparing a circularly-polarized luminescent material with a high luminescence dissymmetry factor. According to the method, an organic micromolecule system, particularly an achiral organic micromolecule system can have circularly-polarized luminescence property (luminescence dissymmetry factor is greater than 0.1) of the high luminescence dissymmetry factor. Through adding different achiral dye molecules, all-waveband-adjustable circularly-polarized luminescence can be achieved. According to the method for preparing the circularly-polarized luminescent material with the high luminescence dissymmetry factor, provided by the invention, the operation is simple and easy to control, and a novel conception is provided for preparing the circularly-polarized luminescent material with the high luminescence dissymmetry factor.

Description

technical field [0001] The invention belongs to the field of circularly polarized luminescent materials, and relates to a method for preparing circularly polarized luminescent materials with a high luminous asymmetry factor. Background technique [0002] Light is an electromagnetic wave, and electromagnetic waves are transverse waves. The plane formed by the vibration direction and the forward direction of the light wave is called the vibration plane. Usually the light emitted by the light source is natural light, and its vibrating surface is not limited to a fixed direction but evenly distributed in all directions. If the vibration plane of a beam of light is limited to a certain fixed direction, then the beam of light is called plane polarized light or linear polarized light. The polarization of light is the most powerful and direct evidence of the transverse wave of light. According to its properties, polarized light can be divided into plane polarized light (linearly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06C07C233/81C07C255/60
CPCC09K11/06C07C233/81C07C255/60C09K2211/1007C09K2211/1014
Inventor 刘鸣华桑玉涛段鹏飞
Owner INST OF CHEM CHINESE ACAD OF SCI
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