Azulene-based branched poly aryl-piperidine anion exchange membranes and preparation methods thereof
AssigneeShanghai Jiao Tong University
InventorsXiaodong Zhuang, Ziyu Fang, Changchun Ke
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Abstract
An azulene-based branched poly aryl-piperidine anion exchange membrane and a preparation method thereof are provided. The exchange membrane includes an azulene-based branched poly aryl-piperidine polymer with a following structure: The preparation method includes: preparing an azulene-based branched poly aryl-piperidine precursor; preparing a cationic azulene-based branched poly aryl-piperidine; preparing the azulene-based branched poly aryl-piperidine anion exchange membrane.
Claims5
An azulene-based branched poly aryl-piperidine anion exchange membrane, wherein the exchange membrane comprises an azulene-based branched poly aryl-piperidine polymer with a following structure:
A preparation method of an azulene-based branched poly aryl-piperidine anion exchange membrane, wherein
- the exchange membrane comprises an azulene-based branched poly aryl-piperidine polymer with a following structure:
- the preparation method comprises:
- (a) preparing an azulene-based branched poly aryl-piperidine precursor, including:
- dissolving p-terphenyl, 6,6′-biazulenyl, and N-methyl-4-piperidone in dichloromethane, followed by adding trifluoroacetic acid and trifluoromethanesulfonic acid for reacting, and collecting the azulene-based branched poly aryl-piperidine precursor;
- (b) preparing a cationic azulene-based branched poly aryl-piperidine, including:
- dissolving the azulene-based branched poly aryl-piperidine precursor in dimethyl sulfoxide (DMSO), adding potassium carbonate and iodomethane, reacting in the dark followed by an addition of ethyl acetate and precipitation, and collecting the cationic azulene-based branched poly aryl-piperidine;
- (c) preparing the azulene-based branched poly aryl-piperidine anion exchange membrane, including:
- dissolving the cationic azulene-based branched poly aryl-piperidine in DMSO, collecting a Cl−-type membrane, performing an ion exchange on the Cl−-type membrane to obtain an OH−-type membrane, purifying the OH−-type membrane, and collecting the azulene-based branched poly aryl-piperidine anion exchange membrane.
Dependencies are inferred from the claim text.