Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method and application of photoresponse organogel capable of being used at 80 DEG C

A photo-responsive, gel technology, applied in the preparation of photo-responsive organogels with external cross-linking agents, without the addition of cross-linking agents, can solve the problems of lack of heat resistance, solvent volatilization, etc., and achieve good photo-responsive performance. Effect

Active Publication Date: 2021-06-15
UNIV OF SCI & TECH OF CHINA
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem solved by the present invention is to provide a method for preparing organogel without adding a cross-linking agent and a method for preparing an organogel adding a cross-linking agent. The organogel prepared in this application can be used as a Photoresponsive gel material solves the problems of conventional gel materials such as solvent volatilization and lack of heat resistance, and still has good photoresponse performance at higher temperatures

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method and application of photoresponse organogel capable of being used at 80 DEG C
  • Preparation method and application of photoresponse organogel capable of being used at 80 DEG C
  • Preparation method and application of photoresponse organogel capable of being used at 80 DEG C

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0043] Aiming at the problems of volatile organic gels and lack of heat resistance in the prior art, this application uses the organic solvent 1,2-propanediol with a high boiling point and low volatility to replace the solvent-water in the traditional hydrogel, and the photoresponsive unit The ruthenium ligand and the benzonitrile-containing ligand were compounded into the gel network, and a light-responsive organic gel usable at 80°C was prepared. Further, the present application can directly form a gel without adding a cross-linking agent by adjusting the monomer concentration and the ratio of the ruthenium-containing complex monomer to the benzonitrile-containing monomer. The reversible transformation of gel-sol can be realized by switching, which can be used for material remodeling. At the same time, based on the color difference of the photoresponsive unit during ligand coordination and dissociation, the gel prepared by adding a cross-linking agent can realize reversible ...

Embodiment 1

[0077] Embodiment 1 The synthetic method of ruthenium-containing monomer A:

[0078] 1) Add 7mmol potassium hydroxide to 20mL dimethyl sulfoxide, stir and heat to 65°C, slowly add 7.4mmol ethanolamine dropwise to the above solution, stir the system at 65°C for 30min, then add 3.7mmol 4-chloro-2, Add 2,6'',2''-terpyridine to the above system, and stop the reaction after stirring at 65°C for 2 days; the reaction solution is cooled to room temperature, poured into 20ml of deionized water, the crude product is extracted with dichloromethane, anhydrous sulfuric acid Sodium drying, filtration, the reaction solution was filtered and washed with water to obtain a crude product, the oil phase was collected and the solvent was removed by rotary evaporation to obtain a crude product, and a light yellow solid was obtained by recrystallization from ethyl acetate;

[0079] 2) Dissolve 4.7mol of the final product of step 1) in 40mL of anhydrous dichloromethane, add 9.8mol of triethylamine un...

Embodiment 2

[0083] Embodiment 2 The synthetic method of benzonitrile-containing monomer B:

[0084] 1) Dissolve 10mmol 4-hydroxybenzonitrile, 10mmol potassium carbonate and 0.6mmol potassium iodide in 20ml N,N-dimethylformamide, stir the reaction solution at 110°C for 30min, then add 11mol 3-chloro-1-propane Alcohol was dissolved in 10ml of N,N-dimethylformamide, slowly added dropwise to the above system, stirred and reacted at 110°C for 24 hours, then the reaction was stopped, the reaction mixture was filtered, the residue was washed with dichloromethane, and the solvent was removed by a rotary evaporator to obtain crude Product, the crude product was purified by silica gel column chromatography after drying, and the eluent was petroleum ether and ethyl acetate to obtain a colorless oily liquid;

[0085] 2) Dissolve 5.64mmol of the final product of step 1) and 8.64mmol of triethylamine in 40mL of anhydrous dichloromethane, stir at room temperature for 10min, then slowly add 8.64mmol of a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a preparation method and application of photoresponse organogel capable of being used at 80 DEG C. The preparation method of the photoresponse gel without adding a cross-linking agent comprises the following steps: heating a ruthenium-containing monomer and a benzonitrile-containing monomer in 1, 2-propylene glycol for reaction to obtain an initial mixed solution; mixing a comonomer, an initiator and 1, 2-propylene glycol and then mixing the mixture with the initial mixed solution to obtain a prepolymer solution; and heating and polymerizing the prepolymer solution in a dark place to obtain the photoresponse gel without an additional cross-linking agent. The invention further provides a preparation method of the photoresponse gel with an additional cross-linking agent. According to the invention, reversible conversion of gel-sol can be realized through switching of illumination and dark heating conditions, and the photoresponse gel is used for material remodeling. Meanwhile, based on the color difference of a photoresponse unit during ligand coordination and dissociation, the gel prepared by additionally adding a cross-linking agent can realize reversible writing and erasing of different patterns through control of illumination and dark heating conditions, and is expected to be used for information storage and anti-counterfeiting.

Description

technical field [0001] The invention relates to the technical field of photoresponsive polymer materials, in particular to a preparation method and application of photoresponsive organogel without adding a crosslinking agent or adding a crosslinking agent. Background technique [0002] Hydrogels have great potential in biomedical engineering and can be used in tissue engineering, health care, electronic skin, and soft robotics. However, the limitation of existing hydrogels is the lack of long-term stability. Water molecules cannot be stably fixed in the polymer network during application, making the hydrogels dehydrated and dry. At the same time, the high temperature dries the hydrogel, resulting in a huge change in the shape and mechanical properties of the hydrogel, which limits the scope of use and practical application scenarios of the hydrogel. Therefore, it is a challenge to design gel materials with long-term stability and heat resistance to maintain good performance...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08F220/56C08F220/36C08F230/04C08F222/20
CPCC08F220/56C08F220/36C08F230/04C08F222/1063
Inventor 吴思杨霓黄云帅
Owner UNIV OF SCI & TECH OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com