Jump to main content
Jump to site search

Issue 43, 2013
Previous Article Next Article

Dynamic crossover and the Debye–Stokes–Einstein relation in liquid N,N-diethyl-3-methylbenzamide (DEET)

Author affiliations

Abstract

The dynamic glass transition in the molecular liquid DEET is investigated in wide temperature and pressure ranges using depolarized dynamic light scattering (DDLS), broadband dielectric spectroscopy (BDS), calorimetry, and rheology. It is found that the viscosity and structural α relaxation rates all exhibit an identical type of thermal activation in the measured temperature and pressure ranges. In addition, it is shown that these characteristic quantities exhibit a dynamic crossover at 240 ± 5 K at ambient pressure. Contrary to recent assertions in the literature, it is demonstrated that the dynamic crossover by no means generally implies a violation of the Debye–Stokes–Einstein relation in molecular glass forming liquids.

Graphical abstract: Dynamic crossover and the Debye–Stokes–Einstein relation in liquid N,N-diethyl-3-methylbenzamide (DEET)

Back to tab navigation

Publication details

The article was received on 04 Jun 2013, accepted on 17 Sep 2013 and first published on 25 Sep 2013


Article type: Paper
DOI: 10.1039/C3SM51565F
Citation: Soft Matter, 2013,9, 10373-10380
  •   Request permissions

    Dynamic crossover and the Debye–Stokes–Einstein relation in liquid N,N-diethyl-3-methylbenzamide (DEET)

    P. J. Griffin, J. R. Sangoro, Y. Wang, A. P. Holt, V. N. Novikov, A. P. Sokolov, Z. Wojnarowska, M. Paluch and F. Kremer, Soft Matter, 2013, 9, 10373
    DOI: 10.1039/C3SM51565F

Search articles by author

Spotlight

Advertisements