Structure-Property Correlation in Phenyl N-Substituted Imidazolium Protic Ionic Liquids.

Authors

Nicole Abdou, Elisabet Ahlberg, Anna Martinelli

Published in

The journal of physical chemistry. B. Jun 23, 2026. Epub Jun 23, 2026.

Abstract

Establishing the correlation between chemical structure and physicochemical properties in protic ionic liquids is essential for their rationale design and application. In this context, the recently developed protic ionic liquids, benzylimidazolium bis(trifluoromethylsulfonyl)imide and n-phenylimidazolium bis(trifluoromethylsulfonyl)imide, are characterized with focus on phase behavior, thermal stability, intermolecular interactions, transport, and electrochemical properties, using a wide range of experimental methods. Compared to the chemical structure of the archetypal protic ionic liquid, 1-ethylimidazolium bis(trifluoromethylsulfonyl)imide, the addition of a phenyl group to the cation results in reduced thermal stability, increased viscosity, stronger intermolecular interactions, and lower ionic conductivity, while maintaining comparable fragility, and a wider electrochemical stability window.

PMID:
42335373
Bibliographic data and abstract were imported from PubMed on 24 Jun 2026.

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