A novel turn-on fluorescent sensor for cyanide ions based on the charge transfer transition of phenothiazine/indolium compounds

Abstract

A new fluorescent sensor combining phenothiazine and indolium, which reacts specifically with the cyanide ion with a large Stokes shift and a good fluorescence quantum yield, was prepared. When CN-.

Synthesis and characterization of phenothiazine sensor for spectrophotometric and fluorescence detection of cyanide

“…Despite being very poisonous, cyanide anions are used in various fields, such as mining, metallurgy, photography, electroplating, heap leaching of gold ore, polymer synthesis, steel manufacture, and as the main component of synthetic fibres, resins, and herbicides. [18][19][20] To reduce health and environmental risks, this toxic cyanide ion level should be detected using a feasible and simple methodology. As a result, scientists have been working to develop an easy, affordable, and precise method to detect cyanide ions.…”