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Indexed by:期刊论文

Date of Publication:2016-05-10

Journal:CHEMISTRY-A EUROPEAN JOURNAL

Included Journals:EI、PubMed、SCIE

Volume:22

Issue:20

Page Number:6881-6890

ISSN No.:0947-6539

Key Words:fluorescence; host-guest systems; morphology; self-assembly; supramolecular chemistry

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 degrees 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, (HNMR)-H-1 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.