Dynamically disordered hopping, glass transition, and polymer electrolytes

Mark C. Lonergan, Abraham Nitzan, Mark A Ratner, D. F. Shriver

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

The central parameter of the dynamically disordered hopping (DDH) model, the renewal time, is correlated with the characteristic time constant of the glass transition relaxation in polymer-salt complexes. With this identification, the frequency-dependent permittivity of these materials can be quite adequately described. In particular, experimental evidence for a high-frequency relaxation predicted by the DDH model is presented. This relaxation corresponds to the polarization of ions in their local percolation clusters as they wait for a renewal event to occur. In light of information on the renewal time, the direct current properties of polymer-salt complexes are used to calculate the size of these local clusters. These calculations suggest that the motion of an ion in the absence of renewal (polymer segmental motion) corresponds to displacements within its local coordination "cage" rather than hopping between several available coordination sites.

Original languageEnglish
Pages (from-to)3253-3261
Number of pages9
JournalJournal of Chemical Physics
Volume103
Issue number8
Publication statusPublished - 1995

Fingerprint

Electrolytes
Glass transition
Polymers
electrolytes
glass
polymers
Salts
Ions
salts
time constant
ions
Permittivity
direct current
Polarization
permittivity
polarization

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Dynamically disordered hopping, glass transition, and polymer electrolytes. / Lonergan, Mark C.; Nitzan, Abraham; Ratner, Mark A; Shriver, D. F.

In: Journal of Chemical Physics, Vol. 103, No. 8, 1995, p. 3253-3261.

Research output: Contribution to journalArticle

Lonergan, MC, Nitzan, A, Ratner, MA & Shriver, DF 1995, 'Dynamically disordered hopping, glass transition, and polymer electrolytes', Journal of Chemical Physics, vol. 103, no. 8, pp. 3253-3261.
Lonergan, Mark C. ; Nitzan, Abraham ; Ratner, Mark A ; Shriver, D. F. / Dynamically disordered hopping, glass transition, and polymer electrolytes. In: Journal of Chemical Physics. 1995 ; Vol. 103, No. 8. pp. 3253-3261.
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