title: Fluorescent Cross-Linked Supramolecular Polymer Constructed by Orthogonal Self-Assembly of Metal-Ligand Coordination and Host-Guest Interaction.
abstract: A new host molecule consists of four terpyridine groups as the binding sites with zinc(II) ion and a copillar[5]arene incorporated in the center as a spacer to interact with guest molecule was designed and synthesized. Due to the 120 ° angle of the rigid aromatic segment, a cross-linked dimeric hexagonal supramolecular polymer was therefore generated as the result of the orthogonal self-assembly of metal-ligand coordination and host-guest interaction. UV/Vis spectroscopy, (1) H NMR spectroscopy, viscosity and dynamic light-scattering techniques were employed to characterize and understand the cross-linking process with the introduction of zinc(II) ion and guest molecule. More importantly, well-defined morphology of the self-assembled supramolecular structure can be tuned by altering the adding sequence of the two components, that is, the zinc(II) ion and the guest molecule. In addition, introduction of a competitive ligand suggested the dynamic nature of the supramolecular structure.
authors.affiliation: Sate Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, No. 2, Linggong Road, High Tech Zone, Dalian, P.R. China.
authors.forename: Xiaomin
authors.initials: X
authors.lastname: Qian
authors.affiliation: Sate Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, No. 2, Linggong Road, High Tech Zone, Dalian, P.R. China. wtgong@dlut.edu.cn.
authors.forename: Weitao
authors.initials: W
authors.lastname: Gong
authors.affiliation: Department of Chemistry and Biochemistry, Texas State University, San Marcos, Texas, 78666, USA.
authors.forename: Xiaopeng
authors.initials: X
authors.lastname: Li
authors.affiliation: Sate Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, No. 2, Linggong Road, High Tech Zone, Dalian, P.R. China.
authors.forename: Le
authors.initials: L
authors.lastname: Fang
authors.affiliation: Sate Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, No. 2, Linggong Road, High Tech Zone, Dalian, P.R. China.
authors.forename: Xiaojun
authors.initials: X
authors.lastname: Kuang
authors.affiliation: Sate Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, No. 2, Linggong Road, High Tech Zone, Dalian, P.R. China. ninggl@dlut.edu.cn.
authors.forename: Guiling
authors.initials: G
authors.lastname: Ning
keywords: fluorescence; host-guest systems; morphology; self-assembly; supramolecular chemistry