Abstract
A new sensor, 1-((2-hydroxynaphthalen-1-yl)methylene)thiourea (NT) was synthesized and characterized by infrared spectra (FI-IR), elemental analysis (EAs), Electrospray ionization mass spectra (ESI-MS). The fluorescent sensing behaviors of the NT toward different metal ions, anions and amino acids were determined by fluorescence spectroscopy. The receptor NT exhibited 73-fold increase in fluorescence intensity in the presence of Al3+ over most other competitive metal ions, anions and amino acids. Moreover, the probe is very sensitive to detect Al3+ with a detection limit 0.11 μM.
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