Wolska Joanna M, Topnani Neha, Gorecka Ewa, Mieczkowski Jozef, Pociecha Damian
Department of Chemistry, Warsaw University, Pasteura 1, 02-093, Warsaw, Poland.
Chemphyschem. 2016 Sep 5;17(17):2686-90. doi: 10.1002/cphc.201600330. Epub 2016 Jun 15.
A series of newly synthesised rod-like polycatenar mesogens forms columnar phases, with the number of molecules in the column cross section depending on the core rigidity. For non-symmetric molecules, an additional density modulation, namely helical arrangement of molecules with a periodicity of approximately 10 molecular distances develops along the columns. For one of the compounds, a new type of columnar liquid crystal phase with 3D positional order is observed. Introducing a stilbene unit in the mesogenic core enhances the fluorescent properties of the compounds. In the hexagonal columnar phase, polarised light emission is observed.
一系列新合成的棒状多链介晶形成柱状相，柱截面中的分子数量取决于核心刚性。对于非对称分子，沿柱会出现额外的密度调制，即分子呈螺旋排列，周期约为10个分子间距。对于其中一种化合物，观察到一种具有三维位置有序的新型柱状液晶相。在介晶核心中引入芪单元可增强化合物的荧光特性。在六方柱状相中，观察到偏振光发射。
