A novel turn-on fluorescent probe for Al3Â + and Fe3Â + in aqueous solution and its imaging in living cells

A quinoline-based fluorescence probe 1 showed a selective sensing ability for Al3+ and Fe3+ ions through fluorescence enhancement response at 515 nm when it was excited at 360 nm. In the presence of Fe3+, Al3+, probe 1 exhibited detection limit of 2.10 × 10-6 M, 3.58 × 10-7 M, respectively. The fluorescence microscopy experiments have demonstrated that probe 1 could be used in live cells for the detection of Al3+ and Fe3+ ions.116