ANION EXCHANGE MEMBRANES FROM STRUCTURED ORGANIC FILMS AND METHODS THEREOF
A structured organic film (SOF) is disclosed. The structured organic film also includes a plurality of segments, a plurality of linkers, and optionally a plurality of capping segments, where at least one or more capping segments may include at least one cationic species. Implementations of the structured organic film (SOF) include where all of the plurality of linkers are bonded to the plurality of segments. A concentration of ionic capping segments in the SOF is from about 0.1 to about 5.0 molar equivalents of ionic capping segments as compared to a concentration of nonionic segments in the SOF. An ion-exchange membrane may include the structured organic film (SOF).
1 . A structured organic film (SOF), comprising:
a plurality of segments;
a plurality of linkers; and
optionally a plurality of capping segments;
wherein at least one or more of the plurality of segments and/or at least one or more of the plurality of capping segments comprises at least one cationic species.
2 . The structured organic film (SOF) of claim 1 , comprising a plurality of capping segments.
3 . The structured organic film (SOF) of claim 1 , wherein at least one of the plurality of segments comprises:
4 . The structured organic film (SOF) of claim 1 , wherein a concentration of cationic capping segments in the SOF is from about 0.1 to about 5.0 molar equivalents of cationic capping segments as compared to a concentration of nonionic segments in the SOF.
5 . The structured organic film (SOF) of claim 1 , wherein a thickness of the SOF is from about 100 nm to about 500 μm.
6 . The structured organic film (SOF) of claim 1 , wherein at least one of the plurality of capping segments comprises a quaternary ammonium compound.
7 . The structured organic film (SOF) of claim 1 , wherein at least one of the plurality of capping segments comprises N-methyl-N,N,N-tris(2-hydroxyethyl) ammonium (MTEAH).
8 . The structured organic film (SOF) of claim 1 , wherein at least one of the plurality of capping segments comprises N-2-hydroxyethyl-N,N,N-trimethylammonium, N-3-hydroxypropyl-N,N-dimethyl-N-ethylammonium, N-methoxyethyl-N,N-dimethyl-N-ethylammonium, N-ethyl-N-methyl-N,N-bis(2-hydroxyethyl) ammonium, or a combination thereof.
9 . The structured organic film (SOF) of claim 1 , wherein the structured organic film (SOF) has an ion exchange capacity (IEC) of from about 0.25 mEq/g to about 5.00 mEq/g.
10 . An ion-exchange membrane, comprising the structured organic film (SOF) of claim 1 .
11 . A structured organic film (SOF), comprising:
a plurality of segments;
a plurality of linkers; and
a plurality of capping segments, wherein at least one or more capping segments comprises at least one cationic species comprising a quaternary ammonium compound.
12 . The structured organic film (SOF) of claim 11 , wherein:
at least one of the plurality of segments comprises:
and
at least one or more capping segments comprises a quaternary ammonium compound.
13 . The structured organic film (SOF) of claim 11 , wherein at least one of the plurality of capping segments comprises N-methyl-N,N,N-tris(2-hydroxyethyl) ammonium (MTEAH).
14 . The structured organic film (SOF) of claim 11 , wherein a concentration of cationic capping segments in the SOF is from about 0.1 to about 5.0 molar equivalents of cationic capping segments as compared to a concentration of nonionic segments in the SOF.
15 . The structured organic film (SOF) of claim 11 , wherein a thickness of the SOF is from about 100 nm to about 500 μm.
16 . The structured organic film (SOF) of claim 11 , wherein the structured organic film (SOF) has an ion exchange capacity (IEC) of from about 0.25 mEq/g to about 5.00 mEq/g.
17 . A structured organic film (SOF), comprising:
a plurality of segments;
a plurality of linkers; and
a plurality of capping segments, wherein:
at least one of the plurality of segments comprises:
and
at least one or more capping segments comprises least one cationic species comprising a quaternary ammonium compound.
18 . The structured organic film (SOF) of claim 17 , wherein at least one of the plurality of capping segments comprises N-methyl-N,N,N-tris(2-hydroxyethyl) ammonium (MTEAH).
19 . The structured organic film (SOF) of claim 17 , wherein at least one of the plurality of capping segments comprises N-2-hydroxyethyl-N,N,N-trimethylammonium, N-3-hydroxypropyl-N,N-dimethyl-N-ethylammonium, N-methoxyethyl-N,N-dimethyl-N-ethylammonium, N-ethyl-N-methyl-N,N-bis(2-hydroxyethyl) ammonium, or a combination thereof.
20 . The structured organic film (SOF) of claim 17 , wherein the structured organic film (SOF) has an ion exchange capacity (IEC) of from about 0.25 mEq/g to about 5.00 mEq/g.