Toward controlled functional sequencing and hierarchical structuring in imidazolium ionenes

KE O'Harra, JE Bara - Polymer International, 2021 - Wiley Online Library
This focused mini‐review highlights recent advances related to the design and applications
of imidazolium ionenes and forward‐looking perspectives. Creative strategies which employ …

Synthesis and performance of 6FDA-based polyimide-ionenes and composites with ionic liquids as gas separation membranes

KE O'Harra, I Kammakakam, EM Devriese, DM Noll… - Membranes, 2019 - mdpi.com
Three new isomeric 6FDA-based polyimide-ionenes, with imidazolium moieties and varying
regiochemistry (para-, meta-, and ortho-connectivity), and composites with three different …

Poly (ether ether ketone) Ionenes: Ultrahigh-Performance Polymers Meet Ionic Liquids

K O'Harra, I Kammakakam, P Shinde… - ACS Applied Polymer …, 2022 - ACS Publications
This work presents the first example of an imidazolium ionene containing aromatic ether-
ketone-ether linkages inspired by poly (ether ether ketone)(PEEK), a well-known ultrahigh …

Influence of Anion and Cation Structures on Ionic Liquid Epoxy-Based Vitrimers

F Wanghofer, C Trausner, D Reisinger… - ACS Applied Polymer …, 2024 - ACS Publications
Ionic liquids with selected anions (Tf2N–, BF4–, and PF6–) and imidazolium cations bearing
two terminal epoxy groups and varying aliphatic, aromatic, and dicationic spacers were …

Molecular Transport Behavior of CO2 in Ionic Polyimides and Ionic Liquid Composite Membrane Materials

J Szala-Bilnik, A Abedini, E Crabtree… - The Journal of …, 2019 - ACS Publications
Ionic polyimides (i-PI) are a new class of polymer materials that are very promising for CO2
capture membranes, and recent experimental studies have demonstrated their enhanced …

Valorization of plastic wastes for the synthesis of imidazolium‐based self‐supported elastomeric ionenes

J Demarteau, KE O'Harra, JE Bara, H Sardon - ChemSusChem, 2020 - Wiley Online Library
Imidazolium‐based ionenes are known to be high‐performance materials for a great variety
of applications. The preparation of these polymers requires the use of bis‐imidazole starting …

Synthesis of imidazolium-mediated Poly (benzoxazole) Ionene and composites with ionic liquids as advanced gas separation membranes

I Kammakakam, KE O'Harra, EM Jackson, JE Bara - Polymer, 2021 - Elsevier
Thermally rearranged (TR) polymers and ionic polymers are two material classes which
have been employed in leading gas separation membranes. This work introduces a novel …

Impact of Ionic Modifications on Polyimide Properties for Gas Separation Applications

S Ravula, FE Rodríguez-González, PS Shinde… - …, 2024 - ACS Publications
In this study, we report the synthesis and investigate the structural and gas transport
characteristics of polyimides containing an imidazole ring in the main chain. First, a neutral …

Designing Ionic Liquid-Derived Polymer Composites from Poly (Ionic Liquid)–Ionene Semi-interpenetrating Networks

KE O'Harra, GM Timmermann, JE Bara… - ACS Applied Polymer …, 2021 - ACS Publications
While the solvating power of ionic liquids (ILs) for a variety of solute types including
polymers is well-known, the use of ILs as solvents for ionenes—charged polymers with …

6FDA‐containing polyimide‐ionene+ ionic liquid gas separation membranes

GP Dennis, KE O'Harra, I Kammakakam… - Journal of Polymer …, 2020 - Wiley Online Library
Abstract Polyimides (PI) synthesized from 4, 4′‐(hexafluoroisopropylidene) diphthalic
anhydride (6FDA) with various diamines have been frequently studied as gas separation …