A Porphyrin‐Based Discrete Tetragonal Prismatic Cage: Host–Guest Complexation and Its Application in Tuning Liquid‐Crystalline Behavior. Issue 18 (28th July 2016)

• Record Type: Journal Article
• Authors: Yu, Guocan; Ye, Yang; Tong, Zaizai; Yang, Jie; Li, Zhengtao; Hua, Bin; Shao, Li; Li, Shijun
• Is Part Of: Macromolecular rapid communications. Volume 37:Issue 18(2016)
• Page Start: 1540
• Page End: 1547
• Publication Date: 2016-07-28
• Subjects: coordination‐driven self‐assembly -- host–guest systems -- liquid crystalline -- self‐organization -- supramolecular chemistry; Macromolecules -- Periodicals; Polymers -- Periodicals; Chemistry -- Periodicals; 547.705
• DOI: 10.1002/marc.201600280
• Languages: English
• ISSNs: 1022-1336

Abstract

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.