The temperature (T) and cationic chain length (n) evolution of the nanoscale structure of the sub‐layering‐threshold members of a model family of room temperature ionic liquids (RTILs) is investigated by x‐ray scattering. The measured curves are computer‐resolved into individual Teubner‐Strey‐like lineshapes. The polar‐apolar layering is found to start at . Opposite n‐trends are found at for the spacings and correlation lengths associated with the diffraction patterns’ two main peaks, and assigned to a shift of balance between the two main interactions, Coulomb and van der Waals, and to increasing packing constraints due to the addition of methylenes. The spacings’ thermal expansion coefficients are found to deviate from the macroscopically‐measured values, and to anomalously decrease with increasing temperature. Finally, the reduced temperature scale, , ( melting temperature), is demonstrated to render the observed trends significantly more systematic than those on a conventional T scale.

中文翻译：

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短链离子液体中的纳米尺度结构。

通过X射线散射研究了室温离子液体（RTIL）模型家族的亚阈值成员的纳米级结构的纳米结构的温度（T）和阳离子链长度（n）演变。测得的曲线通过计算机解析为单独的Teubner-Strey类线形。发现极地非极地层始于 。相反的n趋势位于对于与衍射图的两个主峰相关的间距和相关长度，并指定了两个主相互作用库仑和范德华之间的平衡位移，以及由于添加了亚甲基而增加的堆积约束。发现间距的热膨胀系数偏离了宏观测量值，并且随着温度的升高而异常减小。最后，事实证明，减小的温度标度 （熔化温度）使得观察到的趋势比常规T标度上的观察到的趋势更加系统化。