Structure and Dynamics of Imidazolium in an Ionic Liquid‐PEGDA Iongel via IR, 2D‐IR, and NMR Spectroscopy

ChemPhysChem 2026 Open access

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Authors: Kallol Mukherjee, Matthew R. Liberatore, Tyler A. Parrack, Sean Garrett-Roe
DOI: 10.1002/cphc.202500925
Cited by: 1
References: 89

Abstract

Fourier transform infrared absorption spectroscopy, ultrafast two‐dimensional infrared spectroscopy, nuclear magnetic resonance spectroscopy, and density functional theory calculations show that, in iongels composed of 1‐ethyl‐3‐methylimidazolium bis(trifluoromethylsulfonyl)imide () and cross‐linked poly(ethylene glycol)diacrylate (cl‐PEGDA), imidazolium cations solvate PEGDA chains in tight and loose complexes. H/D isotope substitution at the 2‐position of the imidazolium ring simplifies the CH‐stretching vibrational bands. Tight complexes are characterized by stronger, directional hydrogen bonding interactions between the 2‐position of the imidazolium ring and the ethereal oxygens. The loose complexes resemble bulk ionic liquid nonspecifically perturbed by the PEGDA chains.

Fields of Study & Subjects

Ionic liquids properties and applications Dielectric materials and actuators Hydrogels: synthesis properties applications

Publication details

Journal / source
ChemPhysChem
Publisher
Wiley
Volume
27
Issue
8
Pages
e202500925–e202500925
Publication date
19 April 2026
Language
EN