Observation of polar order and thermochromic behaviour in a chiral bent-core system exhibiting exotic mesophases due to superstructural frustration.
作者信息
Punjani Vidhika, Mohiuddin Golam, Kaur Supreet, Khan Raj Kumar, Ghosh Sharmistha, Pal Santanu Kumar
机构信息
Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector-81, Knowledge City, Manauli 140306, India.
Department of Physics, University of Calcutta, 92 Acharyya Prafulla Chandra Road, Kolkata-700009, India.
出版信息
Chem Commun (Camb). 2018 Apr 3;54(28):3452-3455. doi: 10.1039/C7CC08885J.
A new approach accompanied by superstructural frustration is reported. By attaching a cholesterol moiety directly to the central bent-core system it displayed exotic BPIII, BPII/I, Ncyb*, TGBA, SmAPA, SmA and SmX phases as shown by X-ray scattering results. While higher homologues of the series exhibited spontaneous formation of polar order (Ps ∼ 61 nC cm-2) upon applied voltage, the lower homologues showed thermochromic behaviour which can also be trapped via temperature quenching.
Zotero 插件