Two acylhydrazone based fluorescent probes 1 and 2 were synthesized.Probes 1 and 2 both showed an excellent selectivity toward Al3+ in DMSO-H2O(7∶3,by volome) solution at emission wavelengths of 478 nm and 460 nm,respectively.The stoichiometric ratios of 1∶2 for the Al3+ complexes were determined by Jobs plots,1H NMR titration experiments and LC-MS analysis.The detection limits of probes 1 and 2 for Al3+ were found to be 9.58×10-8 mol/L and 6.52×10-8 mol/L,respectively.The fluorescent sensing mechanisms for probes 1 and 2 to Al3+ were proposed.Furthermore,the applied research revealed that the probes 1 and 2 could be used for the detection of Al3+ in river water and tap water samples. |