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A phototunable anion receptor for C–H⋯X interactions with benzoate anions†
Sk. Atiur Rahaman,Munshi Sahid Hossain,Sruthy Baburaj,Ankita Biswas,Arijit Bag,Subhajit Bandyopadhyay
Organic & Biomolecular Chemistry Pub Date : 04/27/2019 00:00:00 , DOI:10.1039/C9OB00781D
Abstract

A supramolecular receptor consisting of two anthracene moieties with binding motifs for binding of benzoate anions is reported here. NMR studies indicate that the binding involves π–π interactions and CH⋯X interactions. Upon exposure to >350 nm light, the receptor undergoes a [4 + 4] photoelectrocyclization restricting the access to the binding site for benzoate. The reverse reaction works in the presence of the dual stimuli of 254 nm light and the benzoate anions. The work thus demonstrates a light mediated dynamic control of the binding pocket of a supramolecular anion receptor.

Graphical abstract: A phototunable anion receptor for C–H⋯X interactions with benzoate anions
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