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US 10,800,874 B2Granted
Poly(phenylene) and m-Terphenyl as protecting groups for benzimidazolium hydroxides
AssigneeSimon Fraser University
InventorsSteven Holdcroft, Andrew Wright
Life of this patent
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Abstract
The present disclosure provides alkaline-stable m-terphenyl benzimidazolium hydroxide compounds, in which the C2-position is attached to a phenyl group having various substituents at the ortho positions. Polymers incorporating m-terphenylene repeating groups derived from these alkaline-stable benzimidazolium hydroxide compounds are also presented, along with their inclusion in ionic membranes and in electrochemical devices.
Claims10
A polymer comprising repeating units of Formula (II-A) and (II-B)
- wherein:
- R101a, R102a, and R102b are each independently selected from alkyl, perfluoroalkyl, heteroalkyl, aryl, aralkyl, and heteroaryl;
- R111a, R110a, R111b, and R110b are each independently selected from alkylene, perfluoroalkylene, heteroalkylene, arylene, aralkylene, heteroarylene, wherein said alkylene, perfluoroalkylene, heteroalkylene, arylene, aralkylene, or heteroarylene is each optionally substituted with 1, 2, 3, or 4 substituents independently selected from alkyl and halo;
- R105a and R105b are each independently selected from hydrogen, alkyl, perfluoroalkyl, heteroalkyl, aryl, aralkyl, and heteroaryl;
- R106a, R107a, R108a, R109a, R106b, R107b, R108b, and R109b are each independently selected from hydrogen, alkyl, perfluoroalkyl, heteroalkyl, aryl, aralkyl, and heteroaryl,
- wherein the polymer comprises comprising r mole percentage repeating units of Formula (II-A), and s mole percentage repeating units of Formula (II-B), and
- r is from 1 mole percent to 100 mole percent,
- s is from 0 mole percent to 99 mole percent, and
- r+s=100%.
6 more elements
Dependencies are inferred from the claim text.