Precise Structure Control of Stimuli Responsive Liquid Crystals with a Helical Mesogenic Core

我们发现一个低聚（邻苯）（OP），其特征是圆柱螺旋几何，可以作为一个新的介质。向列相液晶（LC） OP作为掺杂剂也表现出与盘状分子的高混相性。令我们惊讶的是，在掺杂材料中，lc的二维六边形晶格相对于玻璃基板完全对齐。此外，一些形成与OP相似结构的盘状LC在室温下产生六边形柱状LC相，其中二维六边形晶格相对于各种衬底完全同向排列。我们注意到盘状分子表现出各向异性的瞬态微波导电性。

We found that an oligo(o-phenylene) (OP), characterized by a cylindrical helical geometry, can act as a novel mesogen. The nematic liquid crystalline (LC) OP as a dopant also shows a high miscibility with discotic molecules. To our surprise, in the doped material, the 2D hexagonal lattice of the LCs fully aligns homeotropically relative to a glass substrate. Furthermore, some discotic LCs forming similar structures to OP generate a hexagonal columnar LC phase at room temperature, where the 2D hexagonal lattice entirely aligns homeotropically relative to various substrates. We noticed that the discotic molecules show an anisotropic transient microwave conductivity.