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On the protons involvement in the electrical conductivity of the urea-based linear supramolecular polymers
Journal of Molecular Liquids ( IF 6 ) Pub Date : 2018-01-06 , DOI: 10.1016/j.molliq.2017.12.158
Jan Jadżyn , Jolanta Świergiel

The correlations between the dc conductivity or the charge relaxation time and the dipolar relaxation time have been found in such range of N,N′-diethylurea concentrations in nonpolar solvent, (mol. fr. > 0.04), where the dipolar reorientation process concerns already not the whole supramolecular polymers chains, but their fragments resulting from the thermal breaking of the hydrogen bonds. That experimental fact seems to be an important evidence for the participation of the protons in the electrical conductivity of the supramolecular system. The most probable, in the conductivity process are involved the parts of the polymers chains formed by cracking of the hydrogen bonds COH+⋯N with the transferred protons in their double potential well. The cascading rotation of the protonated fragments spreading along the chains can be an efficient way of proton transport in the linear supramolecular polymers. It is just the case, where one can expect the compatibility of the time constants in the dipolar and the electric charge dynamics, what was found in our experiment.



中文翻译:

质子参与脲基线性超分子聚合物电导率的影响

直流电导率或电荷弛豫时间与偶极弛豫时间之间的相关性已在非极性溶剂中的NN'-二乙基脲浓度范围内(摩尔分数> 0.04)发现,其中偶极重取向过程已经涉及不是整个超分子聚合物链,而是由于氢键的热断裂而产生的碎片。该实验事实似乎是质子参与超分子系统电导率的重要证据。最有可能的,在导电性过程所涉及的聚合物链通过氢键的C裂化形成的部件Ò ħ + ⋯ñ -转移的质子在其双势阱中。质子化片段沿着链的级联旋转可能是质子在线性超分子聚合物中传输的有效方式。正是这种情况,我们可以期望偶极子中的时间常数与电荷动力学具有相容性。

更新日期:2018-01-06
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