American Chemical Society
ao0c03006_si_002.cif (30.98 kB)

Cesium Cation Complexation by a Flavin Receptor via Self-Assembly and Deprotonation

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posted on 2020-08-14, 17:07 authored by Yoshimi Oka
This study focuses on the self-assembly of a new flavin compound and its scaffolding function for a Cs+ ion. 7,8-Dimethyl-10-[4′-(methoxycarbonyl)­phenyl]-isoalloxazine (FlH–MB) displays self-assembly in a DMSO solution and has strong dependence on the solvent. In the DMSO solution, both the resulting scaffold and the deprotonation of FlH–MB were demonstrated to induce complex formation with a Cs+ ion, which was investigated by UV–vis, 1H NMR, and fluorescence titrations. This complex formation involves both Coulombic and cation−π interactions through the Fl site in an Fl–MB dimer.