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  • Title: New fluorescent and colorimetric probe for cyanide: direct reactivity, high selectivity, and bioimaging application.
    Author: Cheng X, Tang R, Jia H, Feng J, Qin J, Li Z.
    Journal: ACS Appl Mater Interfaces; 2012 Aug; 4(8):4387-92. PubMed ID: 22817134.
    Abstract:
    Taking advantage of the special nucleophilicity of cyanide, a new ratiometric fluorescent and colorimetric probe (Coum-1) was designed by tuning the π-conjugated bridge to affect the intramolecular charge transfer efficiency. Upon the addition of CN(-) anion, the probe displayed very large blue-shift in both fluorescence (90 nm) and absorption (90 nm) spectra, with the detection limit of 800 nM. Other anions gave nearly no interference. Furthermore, Coum-1 was successfully applied to the fluorescent microscopic imaging for the detection of CN(-) in HeLa cells.
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