抄録
Several benzoic acid derivatives having either perfluoroalkylalkoxy or siloxane substituents are synthesized. These substituents show in general incompatibility with aromatic hard core parts and even normal alkyl groups, which leads to nanophase separated structure, e.g. lamellar like structure. Phase behavior of the neat acids forming dimers through hydrogen bonding and of their 4,4'-dipyridyl complexes are investigated. We found that the 4,4'-dipyridyl complex of 4-(n-heptamethyltrisiloxyl)hexyloxybenzoic acid shows a cubic phase. Furthermore an isotropic-isotropic phase transformation is found in the 4,4'-dipyridyl complex of a branched perfluoroalkylalkoxy group containing benzoic acid derivative.
