Punjani Vidhika, Mohiuddin Golam, Kaur Supreet, Khan Raj Kumar, Ghosh Sharmistha, Pal Santanu Kumar
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.
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.
