Surface induced glass transition in a confined molecular liquid

Ranko Richert, Min Yang

Research output: Contribution to journalLetter

37 Scopus citations

Abstract

The structural relaxation of a glass-forming simple liquid, 3-methylpentane, is studied by triplet state solvation dynamics as a function of the distance from the surface in porous silica. By bonding the optical probes to the pore surface, we observe interfacial dynamics which are 3 orders of magnitude slower compared with the bulk, equivalent to a surface induced glass transition. Consistent with length scales of cooperativity, these effects disappear for distances from the surface exceeding a few nanometers.

Original languageEnglish (US)
Pages (from-to)895-898
Number of pages4
JournalJournal of Physical Chemistry B
Volume107
Issue number4
DOIs
StatePublished - Jan 30 2003

ASJC Scopus subject areas

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

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