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.
Schoenberg; Mustafa; Hilmy, Journal of the Chemical Society, 1947, p. 1045,1047
作者:Schoenberg、Mustafa、Hilmy
DOI:——
日期:——
Synthesis and spectroscopic properties of novel benzo[a]phenanthridines