Dynamic crossover and the Debye–Stokes–Einstein relation in liquid N,N-diethyl-3-methylbenzamide (DEET)
Dynamic crossover and the Debye–Stokes–Einstein relation in liquid N,N-diethyl-3-methylbenzamide (DEET)
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液体 N,N-二乙基-3-甲基苯甲酰胺 (DEET) 中的动态交叉和德拜-斯托克斯-爱因斯坦关系
DOI:
10.1039/c3sm51565f
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发表时间:
2013
期刊:
影响因子:
3.4
通讯作者:
F. Kremer
中科院分区:
文献类型:
--
作者:
Philip J. Griffin;J. Sangoro;Yangyang Wang;A. Holt;V. Novikov;A. Sokolov;A. Sokolov;Z. Wojnarowska;M. Paluch;F. Kremer
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.
DOI:
10.1063/1.4770055
发表时间:
2013
期刊:
The Journal of chemical physics
影响因子:
--
作者:
N. Petzold;B. Schmidtke;R. Kahlau;D. Bock;R. Meier;B. Micko;D. Kruk;E.A. Rössler
通讯作者:
E.A. Rössler
影响因子:
3.4
作者:
Sangoro;C. Iacob;R. Valiullin;C. Friedrich;J. Kärger;F. Kremer
通讯作者:
F. Kremer