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
F. Kremer
中科院分区:
化学2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

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相似文献

在分子液体DEET的动态玻璃化转变进行了研究,在宽的温度和压力范围内,使用去偏振动态光散射(DDLS),宽带介电谱(BDS),量热法,和流变学。结果表明,在测量的温度和压力范围内,粘度和结构α弛豫速率都表现出相同类型的热激活。此外,它表明,这些特征量表现出动态交叉在240 ± 5 K在环境压力下。与最近文献中的断言相反,它表明,动态交叉通常绝不意味着违反分子玻璃形成液体中的Debye-Stokes-Einstein关系。
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.
分子玻璃形成体动态磁化率的演变:光散射、介电谱和核磁共振的结果
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
玻璃形成 N,N,-二乙基-3-甲基苯甲酰胺 (DEET) 中的旋转和平移扩散
DOI: 10.1039/c1sm06377d
发表时间: 2011
期刊: Soft Matter
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