Anion-templated synthesis of a switchable fluorescent [2]catenane with sulfate sensing capability.

ABSTRACT: Anion templation strategies have facilitated the synthesis of various catenane and rotaxane hosts capable of strong and selective binding of anions in competitive solvents. However, this approach has primarily relied on positively charged precursors, limiting the structural diversity and the range of potential applications of the anion-templated mechanically interlocked molecules. Here we demonstrate the synthesis of a rare electroneutral [2]catenane using a powerful, doubly charged sulfate template and a complementary diamidocarbazole-based hydrogen bonding precursor. Owing to the unique three-dimensional hydrogen bonding cavity and the embedded carbazole fluorophores, the resulting catenane receptor functions as a sensitive fluorescent turn-ON sensor for the highly hydrophilic sulfate, e

SUBMITTER: Bak KM 

PROVIDER: S-EPMC10829038 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature