A new highly selective "off-on" typical chemosensor of Al, 1-(()-(()-(3,5-dichloro-2-hydroxybenzylidene)hydrazono)methyl) naphthalene-2-ol, an experimental and study.

A new promising fluorescent chemosensor based on a 2-hydroxynaphthaldehyde skeleton was successfully synthesized through double imine formation as a yellow solid with an overall chemical yield of 63%. The compound showed UV/Visible maxima of at 394 nm in DMSO. Based on spectroscopic data of FTIR, ToF-HRMS, H-NMR, and C-NMR, the product was characterized as 1-(()-(()-(3,5-dichloro-2-hydroxybenzilydine)hydrazono)methyl)naphthalene-2-ol.