High conductivity, and "dry" proton motion, in guanidinium salt melts and binary solutions

Zuofeng Zhao, Kazuhide Ueno, Charles Angell

Research output: Contribution to journalArticle

20 Scopus citations

Abstract

Salts of the small symmetrical guanidinium cation, which are important protein denaturants in biophysical chemistry, are studied in the ionic liquid state for the first time. Their conductivities prove to be among the highest measured, and their liquid fragilities prove exceptional. We link these features to the large number of exchangeable protons per cation. We present evidence that the unusual properties stem from the increasing delocalization of protons among alternative structural moieties under increasing thermal excitation, and from the associated increase in "dry" proton contribution to the mass transport properties.

Original languageEnglish (US)
Pages (from-to)13467-13472
Number of pages6
JournalJournal of Physical Chemistry B
Volume115
Issue number46
DOIs
StatePublished - Nov 24 2011

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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