Abstract
A colorimetric fluorescence probe 1-nitro-(8-ethylene-11- (14-diethylaminophenyl)-benzoindo oxazine (ZBO) based on indoleoxazine structure was prepared for detection of cyanide ions (CN−). The introduction of UV difference spectroscopy provides a guarantee for the accuracy of CN− detection. Results indicate that ZBO can achieve the desired recognition of CN− with excellent anti-interference performance. The minimum detection concentration of CN− is 0.1 μM. For practical applications, ZBO test strips were prepared for the convenient and qualitative detection of CN−. The low-concentration solution of ZBO can facilitate the qualitative detection of CN− in peach kernel, loquat seed, and cassava samples. In addition, low cytotoxicity and cell imaging experiments suggested that ZBO can be used for detect CN− in living cells.
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