An easy prepared dual-channel chemosensor for selective and instant detection of fluoride based on double Schiff-base

作者：Leng, Yan-Li; Zhang, Jian-Hui; Li, Qiao; Zhang, You-Ming; Lin, Qi; Yao, Hong; Wei, Tai-Bao^*

来源：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , 2016, 167: 116-121.

DOI：10.1016/j.saa.2016.05.040

• Fluoride (F-)
• Chemosensor
• Colorimetric
• Fluorescent
• Imine group
• DFT calculations

A colorimetric and fluorescent dual-channel fluoride chemosensor N,N'-bis(4-diethylaminosalicylidene) hydrazine (sensor S) bearing two imine groups has been designed and synthesized. This structurally simple probe displays rapid response and high selectivity for fluoride over other common anions (Cl-, Br-, I-, AcO-, H2PO4-, HSO4-, ClO4-, CN- and SCN-) in a highly polar aqueous DMSO solution. Mechanism studies suggested that the sensor firstly combined with F- through hydrogen bonds and then experienced the deprotonation process at higher concentrations of F- anion to the two Ar-OH groups. The detection limit was 5.78 x 10(-7) M of F-, which points to the high detection sensitivity. Test strips based on sensor S were fabricated, which could act as a convenient and efficient F- test kit to detect F- for "in-the-field" measurement.

• 出版日期2016-10-5
• 单位西北师范大学