A highly selective colorimetric and "Off-On" fluorescence sensor for CN-based on Zn(salphenazine) complex
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摘要:
The development of sensors for selective detection of cyanide ion (CN-) is an important mission to accomplish because of the versatility and toxicity of CN-.In the present work,an "ensemble"-based colorimetric and fluorescent sensor (L2-Zn2+) for CN-ion has been developed.The addition of cyanide ions removed Zn2+ from the ensemble (L2-Zn2+) in aqueous medium,resulting in a color change of the solution from red to buff and a "turn-on" fluorescent response.Also,the sensitivity of both the fluorescenceand colorimetric-based assay is below the maximum allowable level of cyanide ions in drinking water set by the World Health Organization.In addition,test strips,which served as convenient and efficient CN-test kits,were fabricated based on the sensor.Notably,the selective detection of cyanide with L2-Zn2+ for practical application was also performed in sprouting potatoes.