A facile route to well-defined imidazolium-based poly(ionic liquid)s of enhanced conductivity via RAFT

Abstract

Examining the relationship between the glass transition temperature, conductivity and molecular weight of tailored imidazolium-based PILs synthesized via RAFT.

How does the type of counterion influence the polymerization rate and thermal properties of tailored choline‐based linear‐ and star‐shaped poly(ionic liquid)s PILs?

“…One can also add that T g ( M n ) dependence of polymers usually fulfills the Fox–Flory relation, where T g should reach a limiting value for high molecular weight, and where a further increase in M n does not affect T g . Note that this behavior is widely reported for PILs of linear morphology, while in the case of nonlinear macromolecules, this relation is barely described in the literature. The Fox–Flory tendency can be observed of linear and nonliner PChMA/NTf 2 − in contrast to PChMA/Cl − .…”

Influence of Tethered Ions on Electric Polarization and Electrorheological Property of Polymerized Ionic Liquids

“…From the 1 H NMR spectra of P[VBTMA][PF 6 ] in Figure 1 B, it can be seen that a broad peak at 1.36–1.64 ppm corresponds to the hydrogen of backbone, two broad peaks at 6.50 ppm and 7.11 ppm correspond to the hydrogen on benzene ring, a broad peak at 4.34 ppm corresponds to the hydrogen on the methylene group attached to the benzene, and a broad peak at 2.90 ppm corresponds to the hydrogen on the methyl group of ammonium ions. From the 1 H NMR spectra of P[C 2 VIm][PF 6 ] in Figure 1 C, it can be seen that a broad peak at 1.37–1.69 ppm corresponds to the hydrogen of backbone and the methyl group at the tail end, a broad peak at 4.12 ppm corresponds to the hydrogen on the methylene attached to the imidazole ring, and three broad peaks at 7.18 ppm, 7.79 ppm and 9.01 ppm corresponds to the hydrogens on the imidazole ring [ 20 ].…”

Enhanced Ionic and Electronic Conductivity of Polyacetylene with Dendritic 1,2,3‐Triazolium‐Oligo(ethylene glycol) Pendants

“…The neutral intermediates G1‐2R 1 , G2‐4R 1 , and G4‐8R 1 were synthesized by a simple esterification reaction of G1‐OH , G2‐2OH , and G4‐4OH with the carboxyl compound 1 , respectively, which were then reacted with iodomethane (CH 3 I) and followed by an anion exchange reaction with LiTFSI according to the procedures in literature, providing three 1,6‐heptadiyne derivatives, called as ionic monomers M1 , M2 , and M3 with di‐, tetra‐, or octo‐substituents of 1,2,3‐triazolium bearing short OEG segments. Lastly, MCP of monomers was carried out by the catalysis of Ru ‐ III at 30 °C to afford the corresponding iPAs, as shown in Scheme .…”