Rotational and translational diffusion in glass-forming N,N,-diethyl-3-methylbenzamide (DEET)

Rotational and translational diffusion in glass-forming N,N,-diethyl-3-methylbenzamide (DEET)
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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
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发表时间:
2011
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:
Sangoro;C. Iacob;R. Valiullin;C. Friedrich;J. Kärger;F. Kremer

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通过结合宽带介电谱 (BDS)、脉冲场梯度核磁共振 (PFG NMR)、动态机械谱 (DMS) 和量热法,在宽频率和温度范围内研究 N,N,-二乙基-3-甲基苯甲酰胺 (DEET) 中的旋转和平移扩散。事实证明,(动态)玻璃化转变(通过 BDS、DMS 和量热法测量)和电荷传输(通过 PFG NMR 和 BDS 测量)定量地遵循爱因斯坦和 Einstein-Smoluchowski 关系。发现参与旋转和平移扩散的分子的有效数密度在实验精度的范围内一致。
Rotational and translational diffusion in N,N,-diethyl-3-Methylbenzamide (DEET) are investigated in wide frequency and temperature ranges by a combination of broadband dielectric spectroscopy (BDS), pulsed field gradient nuclear magnetic resonance (PFG NMR), dynamic mechanical spectroscopy (DMS) and calorimetry. It is proven that the (dynamic) glass transition (as measured by BDS, DMS and calorimetry) and charge transport (as measured by PFG NMR and BDS) follow quantitatively the Einstein and Einstein–Smoluchowski relations. The effective number densities of molecules participating in rotational and translational diffusion are found to coincide within the limits of experimental accuracy.
DOI: 10.1093/chemse/21.6.773
发表时间: 1996-12-01
期刊: CHEMICAL SENSES
影响因子: 3.5
作者:
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DOI: --
发表时间: 2009
期刊:
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