摘要:
Two novel Schiff-base fluorescent probers SQ and NQ based on 8-hydroxyquinoline moiety were designed and synthesized. The both probes were capable of binding with Al3+ by naked eye detection to produce a significant fluorescence enhancement response with a detection limit of 1.48 x 10(-8) and 4.23 x 10(-8) M, respectively. At the same time, the formed complexes SQ-Al3+ and NQ-Al3+ could sequentially detect F-, and the detection limits of F- were determined to be 1.64 x 10(-7) and 3.58 x 10(-8) M, respectively. The "off-on-off" fluorescence response process demonstrated that the binding were reversible. The probes were further successfully utilized to detect Al3+ and E in vitro PC12 cells. (C) 2019 Elsevier B.V. All rights reserved.