A fluorescent and colorimetric chemosensor for selective detection of aluminum in aqueous solution

作者：Kim Kyung Beom; You Dong Min; Jeon Jun Hwi; Yeon Yo Han; Kim Jong Ha; Kim Cheal^*

来源：Tetrahedron Letters, 2014, 55(7): 1347-1352.

DOI：10.1016/j.tetlet.2014.01.021

• Fluorogenic
• Chromogenic
• Chemosensor
• Schiff base
• Aluminum

We have synthesized a new Schiff base 1, which detects Al3+ through fluorescence and naked eye in aqueous solution. The sensor 1 exhibited selective and sensitive recognition toward Al3+ via significant fluorescence enhancement (31-fold). Moreover, it showed a significant color change from colorless to yellow. The complex formation was proposed to be 1:1 ratio, based on the Job plot, ESI-mass spectrometry analysis, H-1 NMR titration, and IR analysis. The detection limit was 1.00 mu M, which is below the WHO acceptable limit (1.85 mu M) in drinking water. In addition, the sensor 1 could be recyclable simply through treatment with a proper reagent such as EDTA.

• 出版日期2014-2-12