Carbazolium salt and use thereof in anion exchange membranes
AssigneeTechnion Research & Development Foundation Limited
InventorsCharles Eliezer Diesendruck, Dario Dekel
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Abstract
Compositions comprising a tetraaryl ammonium salt, a tetraaryl ammonium salt covalently bound to a polymer and methods for manufacturing the same are disclosed. The disclosed compositions are useful e.g., for an anion exchange membrane, or an anion conducting polymer, and may further be used in electrochemical devices such as alkaline fuel cells, and alkaline redox-flow batteries.
Claims18
A composition comprising a tetraaryl ammonium salt represented by Formula 5:
- wherein:
- each B represents independently a bond, or is absent;
- A− is a counter anion;
- and
- each X1 independently comprises an all-carbon aryl ring, a substituted all-carbon aryl ring, a heteroaryl ring, or a substituted heteroaryl ring, wherein each of said substituted aryl ring and said substituted heteroaryl ring comprises one or more substituents selected from the group consisting of:
- a hydroxy group, an alkoxy group, an amino group, an aminoalkyl group, a guanidine group, a thioalkoxy group, a mercapto group, a cyano group, a haloalkyl group, an arylalkyl group, a nitro group, an azo group, a heteroalkyl, a sulfonate group, a sulfinyl group, a vinyl group, an allyl group, an alkyne, a thioalkyl group, an alkylhydroxy group, a keto group, a carboxylic acid derivative, and a sulfone group or any combination thereof;
- and wherein:
- at least one B is a bond;
- with the proviso that at least one of said X1 is selected from the group consisting of a substituted all-carbon aryl ring, an unsubstituted heteroaryl ring, and a substituted heteroaryl ring, wherein said substituted all-carbon aryl ring comprises one or more substituents selected from a hydroxy group, an alkoxy group, an amino group, an aminoalkyl group, an alkyhydroxy group, and any combination thereof.
A composition comprising a tetraaryl ammonium salt covalently bound to a polymer, wherein said tetraaryl ammonium salt is represented by Formula 5:
- wherein:
- each B represents independently a bond, or is absent;
- A− is a counter anion;
- and
- each X1 independently comprises an all-carbon aryl ring, a substituted all-carbon aryl ring, a heteroaryl ring, or a substituted heteroaryl ring, wherein each of said substituted aryl ring and said substituted heteroaryl ring comprises one or more substituents selected from the group consisting of:
- a hydroxy group, an alkoxy group, an amino group, an aminoalkyl group, a guanidine group, a thioalkoxy group, a mercapto group, a cyano group, a haloalkyl group, an arylalkyl group, a nitro group, an azo group, a heteroalkyl, a sulfonate group, a sulfinyl group, a vinyl group, an allyl group, an alkyne, a thioalkyl group, an alkylhydroxy group, a keto group, a carboxylic acid derivative, and a sulfone group or any combination thereof;
- and wherein:
- at least one B is a bond;
- with the proviso that at least one of said X1 is selected from the group consisting of a substituted all-carbon aryl ring, an unsubstituted heteroaryl ring, and a substituted heteroaryl ring, wherein said substituted all-carbon aryl ring comprises one or more substituents selected from a hydroxy group, an alkoxy group, an amino group, an aminoalkyl group, an alkyhydroxy group, and any combination thereof.
Dependencies are inferred from the claim text.