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r XXXX American Chemical Society A dx.doi.org/10.1021/jp111398r |J. Phys. Chem. B XXXX, XXX, 000000 pubs.acs.org/JPCB
 

Summary: r XXXX American Chemical Society A dx.doi.org/10.1021/jp111398r |J. Phys. Chem. B XXXX, XXX, 000000
ARTICLE
pubs.acs.org/JPCB
On the Decoupling of Relaxation Modes in a Molecular Liquid Caused
by Isothermal Introduction of 2 nm Structural Inhomogeneities
Kazuhide Ueno and C. Austen Angell*
Department of Chemistry and Biochemistry, Arizona State University, Tempe, Arizona 85287-1604, United States
' INTRODUCTION
One of the most intensively researched aspects of glass-
forming liquids is the heterogeneity that develops in their
dynamic properties as temperature is decreased from above the
melting point to deep in the supercooled liquid state.18
It is
found that, except for the case of polymer liquids, the behavior at
high temperatures is simple: fluctuations, such as those explored
by neutron scattering through the self-intermediate scattering
function, relax exponentially on time scales that follow the simple
Arrhenius equation. Then at temperatures that are usually, but
not necessarily, below the melting point, (i) a shoulder develops
in the relaxation function, (ii) the longer time component of the

  

Source: Angell, C. Austen - Department of Chemistry and Biochemistry, Arizona State University

 

Collections: Materials Science; Chemistry