Influence of fluoro substituents on the mesophase behaviour of banana-shaped molecules
作者:J. P. Bedel、J. C. Rouillon、J. P. Marcerou、M. Laguerre、H. T. Nguyen、M. F. Achard
DOI:10.1039/b201467j
日期:2002.7.26
Three new series of bent-shaped five-ring liquid crystals, based on the ester of isophthalic acid as the central core and azomethine linkages, are presented. They differ by the number and the position of halogeno substituents on the outer rings. This lateral substitution strongly influences the type of mesophases formed. Calculations were performed to determine the modification of the distribution of charge along the different molecules.
作者:Anne Ugleholdt Petersen、Martyn Jevric、Richard J. Mandle、Edward J. Davis、Stephen J. Cowling、John W. Goodby、Mogens Brøndsted Nielsen
DOI:10.1039/c5ra18649h
日期:——
A large selection of photochromic dihydroazulene (DHA) molecules incorporating various substituents at position 2 of the DHA core was prepared and investigated for their ability to form liquid crystalline phases. Incorporation of an octyloxy-substituted biphenyl substituent resulted in nematic phase behavior and it was possible to convert one such compound partly into its vinylheptafulvene (VHF) isomer