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- Title
Recent Advances in the Design of Ionenes: Toward Convergence with High‐Performance Polymers.
- Authors
Bara, Jason E.; O'Harra, Kathryn E.
- Abstract
Ionenes, condensation polymers wherein the charge (typically cationic) lies directly within the polymer backbone, have been known for over 85 years. Historically, ionenes have been synthesized from 3o diamines and α,ω‐dihaloalkanes, forming chains of ammonium cations tethered by flexible hydrocarbon linkages with "free" halide anions. However, the requisite building blocks of ionenes are by no means limited only to such molecules. In recent years, ionenes with more sophisticated backbone chemistries have been produced, with a trend toward the use of functionalities associated with classical "high‐performance" condensation polymers such as polyimides and polyarylamides. The expansion of ionenes is also catalyzed by the rapid growth of research in imidazolium‐based ionic liquids (ILs), wherein the combination of ionenes with ILs can yield unexpected behaviors. Furthermore, when considering the largely unexplored experimental space in anionic ionenes, the opportunities for new materials are virtually endless. This review primarily focuses on developments in ionenes published in the scientific literature since 2010, but also includes some older examples that may not have received sufficient attention at the time of their original publication yet can provide some key lessons for the future of ionene design.
- Subjects
POLYMERS; SCIENCE publishing; IONIC liquids; POLYIMIDES
- Publication
Macromolecular Chemistry & Physics, 2019, Vol 220, Issue 13, pN.PAG
- ISSN
1022-1352
- Publication type
Article
- DOI
10.1002/macp.201900078