A Porphyrin‐Based Discrete Tetragonal Prismatic Cage: Host–Guest Complexation and Its Application in Tuning Liquid‐Crystalline Behavior. Issue 18 (28th July 2016) - Yu, Guocan
Abstract : The host–guest complexation between a porphyrin‐based 3D tetragonal prism (H ) and electron‐rich pyrene is investigated. This host–guest molecular recognition is further utilized to suppress the liquid‐crystalline behavior of a nematic molecule (G ) containing cyanobiphenyl mesogens functionalized with a pyrenyl unit. Furthermore, coronene, with an increased number of π‐electrons, is used as a competitive guest to recover the liquid‐crystalline behavior ofG . This supramolecular approach provides a glimpse of the new possibilities to modulate the structures of the mesophases. Abstract : Host–guest chemistry is innovatively employed to reversibly tune the liquid‐crystal behavior of a smectic molecule by using a porphyrin‐based 3D tetragonal prism as a host. This supramolecular approach establishes new possibilities to modulate the structures of mesophases in such materials.