论文标题
V型薄荷醇 - 胸甲甲醇深共晶溶剂的动力学：它们是否揭示了非理想性？
Dynamics of type V menthol-thymol deep eutectic solvents: Do they reveal non-ideality?
论文作者
论文摘要
我们已经建立了对薄荷醇 - 硫醇混合物的分子动力学的全面研究，即新型V型深共晶溶剂的原型。将介电光谱和差分扫描量热法组合在一起，以评估长时间范围（10-6-10 2 s）的偶性松弛和玻璃动力学，并在包括两种纯成分（包括两个纯成分）（包括两种纯成分）（包括两个不同的组合物）中。对于溶剂介电强度和玻璃跃迁，证明了与理想混合近似的正偏差。他们支持这样的观念：与分子之间的优先H键相互作用在DES混合物中诱导结构重排。对于广泛的组成（Xthymol = 0.4-0.7），证明了DES混合物的出色玻璃形成能力。在这种情况下，可以从正常液体到深层冷的状态评估偶极动力学。弛豫函数的许多显着参数，包括脆弱性，非替代特征和旋转 - 翻译解耦指向动态异质性的发展。
We have established a comprehensive study of the molecular dynamics of the menthol-thymol mixture, the prototype of the new class of type V deep eutectic solvents. Dielectric spectroscopy and differential scanning calorimetry were combined to assess the dipolar relaxation and glassy dynamics over an extended range of timescales (10-6-10 2 s) and for eleven different compositions including the two pure constituents. Positive deviations from ideal mixing approximation were demonstrated for both the solvent dielectric strength and the glass transition. They support the idea that preferential H-bond interactions between unlike molecules induce structural rearrangements in the DES mixtures. Excellent glassforming capability of the DES mixtures was demonstrated for a broad range of compositions (xThymol = 0.4-0.7). In this case, the dipolar dynamics could be assessed from the normal liquid to the deeply supercooled state. Many salient parameters of the relaxation functions, including fragility, non-Debye character and rotation-translation decoupling point to the development of dynamic heterogeneities.
