Electrogenerated Chemiluminescent Anion Sensing: Selective Recognition and Sensing of Pyrophosphate

摘要

Recently, significant advances have been made independentlynin electrogenerated chemiluminescence (ECL)nanalysis and supramolecular anion sensing. Herein, wendemonstrate a new proof of concept for ECL-based pyrophosphaten(PPi) sensing, where the emission intensity isnchanged by electrochemical turn-on. The ECL PPi sensorn(1-2Zn) consists of two orthogonally bonded moieties:nboron dipyrromethene (ECL reporter) and a phenoxobridgednbis(Zn2+-dipicolylamine) complex (PPi receptor).nThe presence of PPi is confirmed from the changenin the intensity of green ECL generated from the formernwhen PPi is selectively recognized by the latter. DuringnPPi recognition, changes are caused in the electronicnstates of the receptor, and this stimulates the attenuationnof ECL intensity. The electrochemical “on-off”ntriggering of light emission upon anion binding formsnthe basis of a new anion sensing strategy. We expectnthat green-colored ECL sensing would offer an advantagento current ECL analysis.