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A Liquid Crystalline Oligomer Exhibiting Nematic and Twist‐Bend Nematic Mesophases
Author(s) -
Mandle Richard J.,
Goodby John W.
Publication year - 2016
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201600038
Subject(s) - liquid crystal , oligomer , phase (matter) , materials science , twist , biaxial nematic , crystallography , mesogen , chemical physics , condensed matter physics , liquid crystalline , chemistry , organic chemistry , polymer chemistry , physics , geometry , mathematics , optoelectronics
The twist‐bend nematic phase (N TB ) has been described as the structural link between the untilted uniaxial nematic phase (N) and the helical chiral nematic phase (N*). The N TB phase exhibits phenomena of fundamental importance to science, that is, 1) the spontaneous formation of a helical pitch on the nanometer scale in a fluid and 2) the spontaneous breaking of mirror symmetry, leading to the emergence of chiral domains in an achiral system. In this Communication, we present a study on T4 9 [ bis (4‐(9‐(4‐((4‐cyanobenzoyl)oxy)phenyl)nonyl)phenyl) 4,4′‐(nonane‐1,9‐diyl)dibenzoate], a liquid‐crystalline oligomer exhibiting the twist‐bend nematic phase, which has a molecular length that is of comparable dimensions to the sub‐10 nm pitch determined for CB9CB, and provide new insights into the differentiation between the nano‐ and macro‐science for self‐assembling supermolecular systems.