Dopamine-containing random copolymer, and fine preparation method and application thereof

A technology of random copolymer and dopamine, which is applied in the field of dopamine-containing random copolymer and its fine preparation, can solve the problems of complex PDA polymer structure and complex auto-oxidative polymerization mechanism, and achieves easy and precise synthesis and wide applicability. Effect

Inactive Publication Date: 2014-04-30
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the autoxidative polymerization mechanism of DA is complicated, and the structure of PDA polymer is quite complicated.
There is still a lot of controversy

Method used

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  • Dopamine-containing random copolymer, and fine preparation method and application thereof
  • Dopamine-containing random copolymer, and fine preparation method and application thereof
  • Dopamine-containing random copolymer, and fine preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0064] Embodiment 1: This embodiment provides a kind of concrete example PDMA-co-PDMAEMA of random copolymer containing dopamine, and its chemical structural formula is as follows:

[0065]

[0066] The method for finely synthesizing the above-mentioned dopamine-containing random copolymer PDMA-co-PDMAEMA at room temperature comprises the following steps:

[0067] Step 1) Add N-(3,4-dihydroxyphenethyl)methacrylamide DMA (0.3g, 0.0013mol), N,N-dimethylaminoethylmethacrylate DMAEMA (1.0g, 0.0064mol), Methyl 2-bromopropionate EBiB (1.5 μL, 0.013 mmol), isobutyronitrile dithionaphthoate CPDN (0.0108 g, 0.039 mmol), zero-valent copper Cu (0.0025 g, 0.039 mmol) were mixed and added to 5 ml to dry ampoules; make sure that the proportions of these ingredients satisfy [DMA] 0 :[DMAEMA] 0 :[EBiB] 0 :[CPDN] 0 :[Cu(0)] 0 =100:500:1:3:3;

[0068] Then add 1ml solvent DMSO, V DMSO / V DMAEMA =1 / 1, after 10 minutes of argon gas, add 8.3 μL of the ligand methyldiethylenetriamine PMD...

Embodiment 2

[0077] Embodiment 2: the preparation method of inorganic / organic hybrid porous material, its steps are as follows:

[0078] 1) Preparation of ellipsoidal Fe 2 o 3Inorganic nanoparticles (such as Figure 4 shown):

[0079] 54g of FeCl 3 ·6H 2 O and 100mL of deionized water were added to a 500mL reaction flask, then 21.6g of NaOH was dissolved in 100mL of deionized water, slowly added dropwise to the above reaction flask, stirred vigorously, and the temperature of the reaction was raised to 65-70 ℃ and then stirred for 5 minutes, then removed the agitator, put the reaction bottle in a 100 ℃ oil bath with a reflux device to react for 7 days, finally washed with ultrapure water, centrifuged and dried, repeated several times, put in a vacuum drying in the oven;

[0080] Figure 4 is ellipsoidal Fe 2 o 3 The SEM picture of inorganic nanoparticles, it can be seen from the picture that the ellipsoidal Fe 2 o 3 Inorganic nanoparticles have a length of 300nm.

[0081] 2) Ass...

Embodiment 3

[0087] Embodiment 3: Of course, the present invention can also control the size of the inorganic / organic hybrid porous material by regulating the molar content of polydopamine PDMA in the dopamine-containing random copolymer (PDMA-co-PDMAEMA); Copolymer, with inorganic nanoparticles Fe 2 o 3 Assemble. Aggregate obtained as Figure 7 as shown, Figure 7 Three kinds of dopamine-containing random copolymers with different molar contents of DMA and inorganic nanoparticles Fe 2 o 3 SEM after equal mass assembly. Depend on Figure 7 We know that three kinds of dopamine-containing random copolymers PDMA-co-PDMAEMA with different molar contents of polydopamine PDMA were used in our experiments. The molecular weights of these three random copolymers are similar, but the molar content of polydopamine PDMA is different, which are 6.25%, 12% and 18%, respectively. The results show that with the increase of the molar content of polydopamine PDMA, the diameter of the final assembly ...

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Abstract

The invention discloses a dopamine-containing random copolymer. The dopamine-containing random copolymer is characterized in that the general formula of the dopamine-containing random copolymer is PDMA-co-PM, wherein DMA is N-(3,4dihydroxyl phenethyl) methacrylamide, while the monomer M is any one selected from methacrylate monomers, including N,N-dimethylaminoethyl methacrylate DMAEMA, methyl methacrylate MMA and ethyl methacrylate EMA, and in the meantime, the chemical structural formula of the copolymer is shown in description, wherein R1 is shown in description, R2 is one of the group in description, CH3 and CH3CH2. The copolymer has strong adsorption capability on various substances, and thus is suitable for further preparing various inorganic / organic hybrid porous materials and organic porous materials. The invention also provides a fine preparation method of the copolymer and a method for preparing inorganic / organic hybrid porous materials from the copolymer, wherein the preparation method only requires simple polymerization operation and does not need large instruments and also high-tech excellent assembly technology, and therefore, the preparation method is suitable for popularization and application.

Description

technical field [0001] The invention relates to a dopamine-containing random copolymer and its fine preparation method and application. Background technique [0002] Mussels have strong underwater adhesion ability, and the adhesive proteins secreted by them can adhere to almost all materials including polytetrafluoroethylene (PTFE). Its attractive properties have aroused great interest of researchers from various countries. By imitating the molecular structure of mussel adhesion protein, scientists designed and prepared a variety of polymers with strong adhesion function and explored related applications. However, almost all the current research work is focused on the use of small molecules of dopamine under alkaline (pH = 8.5) conditions, dopamine is oxidized and spontaneously polymerized to form polydopamine (PDA). PDA can be attached to the surface of almost any material to form a uniform nano film. And because PDA contains active double bonds, it can undergo secondary...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/58C08F220/34C08J9/28C08J9/26C08L33/24C08K3/22
Inventor 张卫东王锦玲
Owner SUZHOU UNIV
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