Preparation method for POSS/PDMAEMA organic/inorganic hybrid material according to thiol-ene click chemistry method

A technology of polydimethylaminoethyl methacrylate and dimethylaminoethyl methacrylate, applied in the field of new materials, to achieve high compatibility and thermal stability, excellent solubility, and easy operation

Inactive Publication Date: 2015-04-29
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Most of the current reports focus on the preparation of general-purpose polymer / POSS organic / inorganic hybrid materials, and few studies have used thiol-ene click chemistry to prepare an environment-responsive (for example: temperature, pH, light, salt, etc. )POSS / polymer-based organic / inorganic hybrid materials, and there is no literature report or patent application on the preparation of POSS / polydimethylaminoethyl methacrylate organic / inorganic hybrid materials by thiol-ene click chemistry

Method used

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  • Preparation method for POSS/PDMAEMA organic/inorganic hybrid material according to thiol-ene click chemistry method
  • Preparation method for POSS/PDMAEMA organic/inorganic hybrid material according to thiol-ene click chemistry method
  • Preparation method for POSS/PDMAEMA organic/inorganic hybrid material according to thiol-ene click chemistry method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Weigh 9.34g monomer dimethylaminoethyl methacrylate, 0.048g chain transfer agent 4-cyano-4-(thiobenzoyl)valeric acid, 0.0098g initiator 4,4'-azobisiso Add butyronitrile (AIBN) into a 50mL single-necked flask, slowly add 15mL of 1,4-dioxane to the single-necked flask, and dissolve completely; then place it in a water bath with a magnetic heating stirrer at 70°C for 12 hours to end the reaction Finally, the product was dialyzed in deionized water with a pH of 4.5 for 5 days, and the dialyzed solution was vacuum rotary evaporated at 45°C, and then vacuum-dried at 65°C for 24h to obtain light pink polydimethylaminoethyl methacrylate. Esters (PDMAEMA);

[0034] Weigh 0.5g of PDMAEMA obtained in step (1) and 1.0g of POSS containing vinyl groups respectively, place them in a 25mL single-necked flask, weigh 5mL of tetrahydrofuran to dissolve them, seal the single-necked flask with a rubber stopper, and then use a micro-sampler Add 29 μL dimethylphenylphosphine and 35 μL n-hexy...

Embodiment 2

[0036] Embodiment 2: Same as Example 1, but the consumption of chain transfer agent 4-cyano-4-(thiobenzoyl) valeric acid in step (1) is changed from 0.048g to 0.072g. 0.01~0.1g

Embodiment 3

[0037] Embodiment 3: Same as Example 1, but the consumption of chain transfer agent 4-cyano-4-(thiobenzoyl) valeric acid in step (1) is changed from 0.048g to 0.096g.

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Abstract

The invention relates to a preparation method for a POSS/PDMAEMA organic/inorganic hybrid material according to a thiol-ene click chemistry method. The preparation method comprises the following steps: obtaining PDMAEMA through synthesis according to an RAFT polymerization method; taking dimethyl phenylphosphine as a catalyst, taking n-hexylamine as a reducer, and conducting a reduction reaction on a dithioester group at the tail end of PDMAEMA to generate sulfydryl; conducting thiol-Michael addition reactions on the double bonds of PDMAEMA containing sulfydryl and POSS containing ethenyl according to the thiol-ene click chemistry method to generate a POSS/PDMAEMA organic/inorganic hybrid material with a temperature/pH dual response. The preparation method has the advantages that the prepared POSS/PDMAEMA organic/inorganic hybrid material is small in size, stable in chemical bond, and uniform in particle diameter; due to a click reaction to PDMAEMA, the hydrophilic performance of POSS is effectively improved; in a water solution, the POSS/PDMAEMA organic/inorganic hybrid material is excellent in temperature sensibility and pH sensibility; due to a special structure and the stimulus response performance, the POSS/PDMAEMA organic/inorganic hybrid material is a new-generation environment-friendly new material product, and can be applied to drug carrying, targeted release, metal ion recovery, environmental pollutant adsorption and other fields.

Description

technical field [0001] The invention relates to the field of new materials, in particular to a method for preparing POSS / polydimethylaminoethyl methacrylate organic / inorganic hybrid materials by thiol-ene click chemistry. Background technique [0002] Organic / inorganic hybrid materials are a new class of composite materials developed in recent years. At least one of their phases is at the nanoscale in one dimension, and the nanophase is connected with other phases through physical or chemical interactions to produce new materials. Therefore, organic / inorganic hybrid materials are significantly different from traditional composite materials in structure and performance, and are considered to be one of the "most promising materials in the 21st century". Catalysts, optoelectronic materials, and sensors all have broad application prospects. Some technological achievements have been applied in high-tech fields such as aerospace, electronic information, and optoelectronic material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F120/34C08F2/38C08F8/42C08F8/04
Inventor 杨正龙
Owner TONGJI UNIV
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