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A photodegradable triazene polymer

A technology of triazene and polymer, applied in the field of novel photolyzable triazene polymers, can solve the problems of decreased absorbance, poor transmission effect, easy viscosity of the solution, etc., to avoid cell damage, novel structure, good solubility

Inactive Publication Date: 2019-04-19
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no wavelength limit for the absorption of laser by metal, but the heat and solid particles generated by it will greatly damage the deposited layer
The light absorption peak of the existing triazene polymer is 280-350nm, and the absorbance of the wavelength greater than 380nm drops sharply, and the transmission effect is poor
When LIFT is applied to biomedical science experiments, if about 300nm ultraviolet light is used as the light source, the cells in the deposited layer will be damaged or even die, resulting in the inability of the existing triazene polymers to be widely used in biomedical experiments
In addition, the solubility of existing triazene polymers is low, and the solution tends to be viscous or even gel-like

Method used

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  • A photodegradable triazene polymer
  • A photodegradable triazene polymer
  • A photodegradable triazene polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031]

[0032] 1) Mix 0.015mol of diaminobenzophenone, 30mL of water and 7.5mL of 37% hydrochloric acid, stir slowly at room temperature for 2 hours and then cool to -5°C to obtain a mixed solution 1; add 0.03mol of sodium nitrite to 20mL of RO In water, a sodium nitrate solution was obtained, and after cooling to -5°C, the sodium nitrate solution was added dropwise to the mixed solution 1 to react for 1 hour, and the reaction temperature was -5°C to obtain the first type of solution 1;

[0033] 2) Mix and react 0.015mol of N,N'-diethyl-1,3-propylenediamine, 50mL of water and 3.5mL of 37% hydrochloric acid, and cool to -5°C to obtain the second type of solution;

[0034] 3) According to the mixing ratio of 1.5g / mL, add crushed ice into n-hexane and mix to obtain the third type of solution; then add the first type of solution 1 and the second type of solution dropwise into the third type of solution alternately , stirred and reacted for 0.5h to obtain intermediate product 1...

Embodiment 2

[0038]

[0039] 1) Mix 0.015mol of 2,6-diaminoanthraquinone, 30mL of water and 7.5mL of 37% hydrochloric acid, stir at room temperature for 1h, cool to -5°C to obtain mixed solution 2; add 0.03mol of sodium nitrite In 20mL of RO water, a sodium nitrate solution was obtained, and after cooling to -5°C, the sodium nitrate solution was added dropwise to the mixed solution 2 to react for 1 hour at a reaction temperature of -5°C to obtain the first type of solution 2;

[0040] 2) Mix and react 0.015mol of N,N'-diethyl-1,3-propylenediamine, 50mL of water and 3.5mL of 37% hydrochloric acid, and cool to -5°C to obtain the second type of solution;

[0041] 3) According to the mixing ratio of 1.5g / mL, add crushed ice into n-hexane and mix to obtain the third type of solution; then add the first type of solution 2 and the second type of solution dropwise into the third type of solution alternately , stirred and reacted for 1h to obtain the intermediate product 2;

[0042] 4) Add 60mL...

Embodiment 3

[0045]

[0046] 1) Mix 0.015mol of basic fuchsin, 30mL of water and 7.5mL of 37% hydrochloric acid, stir at room temperature for 2h, cool to -5°C to obtain mixed solution 3; add 0.03mol of sodium nitrite to 20mL of RO water , to obtain a sodium nitrate solution, and after cooling to -5°C, add the sodium nitrate solution dropwise to the mixed solution 3 to react for 1 hour at a reaction temperature of -5°C to obtain the first type of solution 3;

[0047]2) 0.015 mol of diethylamine, 50 mL of water and 3.5 mL of 37% hydrochloric acid were mixed and reacted, and cooled to -5°C to obtain the second type of solution 3;

[0048] 3) According to the mixing ratio of 1.5g / mL, add crushed ice into n-hexane and mix to obtain the third type of solution; then add the first type of solution 3 and the second type of solution 3 into the third type of solution dropwise alternately , stirred and reacted for 1 h to obtain intermediate product 3;

[0049] 4) Add 60mL of 2mol / L K to the interm...

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Abstract

The invention belongs to the technical field of the laser-induced forward transfer, and particularly relates to a novel photolytic triazene polymer. The provided triazene polymer has the novel structure, and is photolytic. The light absorption peak wave length thereof is more than 380 nm. The damage to cells caused by an ultraviolet source can be effectively avoided, and the potential requirement of applying the laser-induced forward transfer technology to the biomedical science experimental research can be satisfied. In addition, the triazene polymer has high purity and good solubility, can be decomposed into small pieces during the photolysis process, and decomposed into a gaseous product in the melting plume. The cellular layer cannot be polluted, and a solid melting product kept on the surface of the cellular layer can be taken away. An additional cleaning step is not needed.

Description

technical field [0001] The invention belongs to the technical field of laser-induced forward transfer, in particular to a novel photolyzable triazene polymer. Background technique [0002] Laser-induced forward transfer technology (LIFT) uses a high-energy beam laser to focus through a transparent substrate to the vicinity of the material film. Through the action of a strong light field near the focus, the material film flies away from the substrate and attaches to the surface of the receptor to achieve the deposition of the film material. The material of the deposited layer is often damaged due to the thermal load of the laser. Therefore, it is necessary to set an intermediate layer between the transparent substrate and the deposition layer to absorb the laser light, and this intermediate layer is called a sacrificial layer (DRL). [0003] At present, the materials used for the sacrificial layer mainly include metals such as titanium and gold, and triazene polymers. There...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/02C07C245/22C07C245/24
CPCC07C245/22C07C245/24C08G73/0206C08G73/0213
Inventor 邓宇朱紫红郭钟宁张永康黄志刚刘江文王文兵麦文豪洪文生
Owner GUANGDONG UNIV OF TECH
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