An easy prepared double naphthalene Schiff-base for highly selective sensing of cyanide via the dipolymer in aqueous solution

作者：Qu, Wenjuan; Gao, Guoying; Shi, Bingbing; Zhang, Peng; Wei, Taibao; Lin, Qi; Yao, Hong; Zhang, Youming^*

来源：Supramolecular Chemistry, 2014, 26(5-6): 403-408.

DOI：10.1080/10610278.2013.844814

• cyanide
• chemosensor
• compounds combined
• HEPES solution
• colour change

A highly selective chemosensor based on an easy-to-prepare double naphthalene Schiff-base (R) is reported for the colorimetric and fluorometric dual-channel sensing of cyanide by taking advantage of the dipolymer in DMSO-H2O (8:2, v/v) HEPES buffer (pH 7.21) solution. The detection of cyanide was carried out via the nucleophilic attack of cyanide anion on the C=O of the probe's tautomer with a 1:1 binding stoichiometry, which could be confirmed by H-1 NMR and MS studies. The detection limit of R for the determination of cyanide was estimated to be 8.434x10(-9)M. And other anions, including F-, Cl-, Br-, I-, AcO-, H2PO4-, HSO4-, ClO4-, SO42- and N-3(-) had nearly no influence on the probing behaviour. The test strips based on R were fabricated, which could act as convenient and efficient CN- test kits.

• 出版日期2014-6-3
• 单位西北师范大学