Fluorescence Sensors for Bismuth (III) Ion from Pyreno[4,5-d]imidazole Derivatives.

摘要: Three pyreno[4,5-d]imidazole derivatives are synthesized and evaluated as fluorescent sensors for bismuth (III) ion. The target compounds prepared in 55-86% yields from a condensation reaction between pyrene-4,5-dione aromatic aldehydes. compound bearing phenolic group can selectively detect ion via fluorescence enhancement with detection limit of 1.20 μm CH3 CN-DMSO mixture 3.40 10% pH5 aqueous mixture. sensing mechanism involving formation coordination complex is investigated by UV-VIS titrations, 1 H-NMR the decomplexation sulfide application this sensor quantitative analysis spiked real water samples two different sources demonstrated.