A simple hydrazone as a multianalyte (Cu 2+ , Al 3+ , Zn 2+ ) sensor at different pH values and the resultant Al 3+ complex as a sensor for F .

A new colorimetric and fluorescence molecular chemosensor based on triazole hydrazone can be used as a multi-probe for selective detection of Al 3+ , Zn 2+ , and Cu 2+ by monitoring changes in the absorption and fluorescence spectral patterns. Results show that Al 3+ and Zn 2+ ions can induce remarkable fluorescence enhancement at pH 6.0 and pH 10.0, respectively, while the addition of Cu 2+ ions leads to a significant UV-visible absorption enhancement in the visible range at pH 6.0. In addition, the resultant Al 3+ complex could act as an 'on-off' fluorescence sensor for F - . The fluorescence sensor was also used to monitor intracellular Al 3+ , Zn 2+ , and F - in Hela cells.