A novel colorimetric and "turn-on" fluorimetric chemosensor for selective recognition of CN- ions based on asymmetric azine derivatives in aqueous media

作者：Pei, Peng-Xiang; Hu, Jing-Han^*; Long, Chen; Ni, Peng-Wei

来源：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , 2018, 198: 182-187.

DOI：10.1016/j.saa.2018.03.022

• Anion sensor
• Colorimetric
• Fluorescence
• Cyanide
• Test strip
• Bitter almond
• DFT

A novel chemosensor 24(2)-(((E)-quinolin-2-ylmethylene)hydrazono)methyl)phenol PX has been successfully designed and synthesized, which showed both colorimetric and "turn-on" fluorescence responses for CN in DMSO/H20 (3:2, v/v; pH = 7.20) solution. The sensor could respond effectively to the stimulation of CINI ions via deprotonation and sensing mechanism of intramolecular charge transfer (ICT). Moreover, the sensor PX was successfully utilized to detect CN in bitter almond, and the detection limit on fluorescence response of PX towards CN was down to 4.5 x 10(-7) M. Test strips containing PX were also prepared, which could act as a practical colorimetric tool to detect CN in aqueous media.

• 出版日期2018-6-5
• 单位兰州交通大学