Anion/ion pair binding and chiral modulation investigation based on an 18-crown-6-functionalized Schiff base macrocyclic receptor

Key Points

• The study investigates anion and ion pair binding using chiral modulation in macrocyclic receptors.
• Synthesis of two π-conjugated fluorescent macrocyclic receptors (MR and C-MR)
• C-MR contains two 18-crown-6 moieties
• Evaluation of anion recognition through the formation of stable complexes
• MR demonstrates efficient anion recognition
• Stable complexes formed via C(sp²)-H•••X⁻ hydrogen interactions