Nucleophilic approach to cyanide sensing by chemosensors

Abstract

: Cyanide anion has wide use in industrial areas and high toxic effect on the environment as waste. Moreover, plant seeds contain cyanide which occurs in excessive consumption. Therefore, many studies are carried out to determine cyanide. Especially, optical sensors showing colorimetric and fluorimetric changes have been of considerable interest due to their easy, cheap, and fast responses. This review discusses recent developments in the colorimetric and fluorimetric detection of cyanide by nucleophilic addition to different types of receptors via the chemodosimeter approach. The sensitivity and selectivity of the sensors have been reviewed for changes in absorption and fluorescence, naked-eye detection, real sample application, and detection limits when interacting with cyanide.