Turn-off fluorescence sensing of benzenediols via guest-induced π-conjugation switching in bisimidazole-based hydrindacene allosteric receptors.

Fluorescent bisimidazole-based hydrindacene allosteric receptors 1a-c and 2 were synthesized for nonlinear ON/OFF sensing of benzenediols. By tuning their D-π-D conjugation through substituent modification, these receptors were designed to function a…

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