Preparation of a fixed-tetraphenylethylene motif bridged ditopic benzo-21-crown-7 and its application for constructing AIE supramolecular polymers

Benzo-21-crown-7 (B21C7) is one of the most important crown ethers, which not only shows excellent physicochemical properties but also exhibits promising binding capability with dialkylammonium salts. In this paper, we designed and synthesized a fixed-tetraphenylethylene (FTPE) motif bridged ditopic benzo-21-crown-7 molecule (H). The fixed tetraphenylethylene motif endows H with aggregation induced emission (AIE) property. In the presence of a ditopic dialkylammonium salt guest molecule (G), a fluorescent supramolecular polymer with golden luminescent property could be fabricated. This B21C7based host-guest supramolecular polymer with golden fluorescence may have potential application in dynamic luminescent materials. (c) 2020 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.

Automated summary

In this paper, a fixed-tetraphenylethylene motif bridged ditopic benzo-21-crown-7 molecule (H) was designed and synthesized, showing aggregation induced emission (AIE) property. A fluorescent supramolecular polymer with golden luminescent property could be fabricated by H in the presence of a ditopic dialkylammonium salt guest molecule (G), suggesting potential application in dynamic luminescent materials.