Abstract A new di-Schiff base colorimetric sensor, 4-(Anthracen-9-ylmethylene-hydrazonomethyl)-benzene-1,3-diol (coded as AHB), possessing anthracene and 2,4-dihydroxybenzaldehyde as fluorophore and receptor, respectively, has been reported. The sensor AHB is capable of naked eye detection of Hg2+ ions and detection of Cu2+ and Al3+ ions via two different fluorescence mechanisms in HEPES buffered CH3OH: H2O (9: 1) solvent system. The sensor witnessed high selectivity towards all the three ions in the presence of various other metal ions. The quantitative detection limit of Hg2+ ions was calculated to be 2 μM; while it was 2.07 and 1.29 μM for Cu2+ and Al3+ ions, respectively.

中文翻译：

---

蒽附加二席夫碱化学传感器的比色和荧光多离子识别

摘要 一种新型二希夫碱比色传感器，4-(Anthracen-9-ylmethylene-hydrazonomethyl)-benzo-1,3-diol（编码为AHB），分别具有蒽和2,4-二羟基苯甲醛作为荧光团和受体，已经被报告了。传感器 AHB 能够在 HEPES 缓冲的 CH3OH:H2O (9:1) 溶剂系统中通过两种不同的荧光机制对 Hg2+ 离子进行肉眼检测以及对 Cu2+ 和 Al3+ 离子的检测。在存在各种其他金属离子的情况下，该传感器对所有三种离子都具有高选择性。Hg2+离子的定量检测限经计算为2 μM；Cu2+ 和 Al3+ 离子分别为 2.07 和 1.29 μM。