Xue Yi-Nan, Li Ya-Xin, Tang Yu-Min, Yang Shu-Gui, Jia Ruo-Yin, Cseh Liliana, Liu Feng, Zeng Xiang-Bing, Ungar Goran
Shaanxi International Research Center for Soft Matter, State Key Laboratory for Mechanical Behaviour of Materials, Xi'an Jiaotong University, Xi'an 710049, China.
School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou 450001, China.
J Am Chem Soc. 2025 Jun 11;147(23):19711-19717. doi: 10.1021/jacs.5c02663. Epub 2025 May 29.
A polysiloxane with tris-alkoxy-ended rod-like mesogenic side groups forms an unusually low-symmetry antiferrochiral liquid crystal, space group 1̅, consisting of distorted left- and right-handed double-helices containing alternating splay and twist sections. The unit cell contains two double-helical columns. On faster cooling, a closely related metastable orthorhombic structure is formed, symmetry , with 8 double helices per cell.
