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

作者：Yu, Bin; Li, Chun-Yu; Sun, Yin-Xia^*; Jia, Hao-Ran; Guo, Jian-Qiang; Li, Jing

来源：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , 2017, 184: 249-254.

DOI：10.1016/j.saa.2017.05.012

• Colorimetric chemosensor
• Fluorescent chemosensor
• Cyanide anion
• Azine derivative

A novel azine derivative colorimetric and fluorescent dual-channel probe salicylaldehyde hydrazine-3,5-dibromosalicylaldehyde (1) has been designed, synthesized and characterized. The probe 1 is confirmed to have especial selectivity and good sensitivity on detecting CN- via UV-vis absorption and fluorescence spectrum in aqueous solution (H2O/DMSO, 1:4, v/v). This colorimetric and fluorescent dual-channel probe response to CN- owed to the deprotonation process and established the mechanism by using H-1 NMR spectroscopy. Further researches showed that the detection limit of the probe 1 to CN- anions is 8.01 x 10(-9) M, significantly lower than the maximum level 1.9 x 10(-6) M in potable water from WHO guidelines.

• 出版日期2017-9-5
• 单位兰州交通大学