A new azine derivative colorimetric and fluorescent dual-channel probe for cyanide detection

A colorimetric and fluorescent dual-channel probe 1 could instantly detect CN− anion with specific selectivity and high sensitivity. The detection limit on fluorescence response of the sensor to CN− is down to 8.01 × 10− 9 M, which is far lower than the maximum level for cyanide of 1.9 × 10− 6 M in drinking water from WHO guidelines.114