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Two novel rhodamine-active probes G2 and R2 were designed and synthesized, which adopted a 1:1 binding stoichiometry and showed highly selective sensing for Fe3+ ions over other metal ions in EtOH–H2O (1:1, v/v, Tris–HCl pH=7.4) in the fluorescence and ultraviolet spectra. Cytotoxicity and bioimaging studies by PC12 and L929 indicated that the probes were low cytotoxic, cell permeable and suitable...
Four novel rhodamine-active probes L1–L4 have been proposed and characterized as fluorescent chemosensors for Fe 3+ . An ‘off-on’ type fluorescent enhancement was observed, which was induced by the interactions between Fe 3+ and the probe, proven to adopt a 1:1 binding stoichiometry. The recognition properties of the target compounds with metal ions have been investigated in methanol–water...
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