Conformation-Changeable Pi-Electronic Systems With Metastable Bent-Core Conformations And Liquid-Crystalline-State Electric-Field-Responsive Properties

This study focused on the use of nonconventional bent-core pi-electronic systems, 2,2'-bipyrroles substituted with modified benzoyl units, as building units of stimuli-responsive assemblies. Electric-field-responsive mesophase behaviors were observed in homochiral synclinic ferroelectric smectic C structures comprising the syn conformations. Electric-field application induced changes in the polarized optical microscopy textures with dynamic behaviors derived from the conversion from twisted to untwisted states.