AIE active salicylaldehyde-based hydrazone: A novel single-molecule multianalyte (Al(3+)or Cu2+) sensor in different solvents

摘要

A simple asymmetric hydrazone 1 based on salicylaldehyde was designed and prepared, and exhibited an evident aggregation-induced emission (AIE) at a long wavelength of 570 nm in aqueous medium. Probe 1 can selectively sense Al(3+)in CH3OH solution through the chelation-enhanced fluorescence mechanism and also recognize Cu(2+)via fluorescence quenching in H2O solution through the Cu2+-induced assembly of aggregates. In addition, the probe can be applied for detecting Cu(2+)in biological samples. (C) 2019 Elsevier B.V. All rights reserved.