Dynamics of glassy and liquid m-toluidine investigated by high-resolution dielectric spectroscopy

Andrea Mandanici, Maria Cutroni, Ranko Richert

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Abstract

The glass-former m-toluidine displays the characteristic properties of a fragile supercooled liquid, which suggest the existence of a slow secondary relaxation process. In view of the recently realized importance of such a secondary relaxation feature, we have conducted a dielectric search for the secondary process in viscous and glassy m-toluidine. Based on high-resolution experiments on the distilled liquid, a secondary process can be identified which has the properties typical of a Johari-Goldstein β relaxation. As a result, the previous hypothesis that the methyl group might be responsible for suppressing the secondary dynamics in glassy m-toluidine no longer holds.

Original languageEnglish (US)
Article number084508
JournalJournal of Chemical Physics
Volume122
Issue number8
DOIs
StatePublished - Aug 9 2005

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ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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