The effect of the shape of the mesogenic group on the structure and phase behavior of 2,3,4-tris(dodecyloxy)benzenesulfonates with alkaline cations
摘要:
报告了一组 2,3,4-三(十二烷氧基)苯磺酸碱式盐的合成和介相结构特征。结合偏振光学显微镜、差示扫描量热法和 X 射线散射法可以发现,阳离子大小的变化导致有效介质形状的变化,从而导致材料相行为的系统转变。我们观察到了不同类型和尺寸的热致性介相:一维(胶粘双层)、二维(有序和无序柱状相)和三维(高温胶束介形相、低温结晶相)。当阳离子尺寸较小时,立方填料占主导地位,因此有效介质形状接近圆锥形。随着离子尺寸的增大,介质形状变得更加锥形,柱状介相似乎更加稳定。
Self-assembling of tapered benzenesulfonate-based dendrons with bulky aromatic focal groups
作者:Maxim A. Shcherbina、Artem V. Bakirov、Linglong Yan、Uwe Beginn、Xiaomin Zhu、Martin Möller、Sergey N. Chvalun
DOI:10.1016/j.mencom.2015.03.023
日期:2015.3
Comparative analysis of the structure and phase behavior of the synthesized compounds on the basis of symmetrically and asymmetrically substituted benzenesulfonic acids with bulky aromatic focal groups revealed that their phase behavior is determined equally by the shape of the mesogenic groups as well as by specific interactions at the focal points of the monodendrons.