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A New Piperidine Derivatized-Schiff Base Based "Turn-on" Cu 2+ Chemo-Sensor.
Journal of Fluorescence 2017 May
In this study, we report the synthesis of new Schiff base E-1-(((1-benzylpiperidin-4-yl)imino)methyl)naphthalenee-2-ol (L) and evaluation of its fluorescence response toward Cu2+ ion. Preliminary, solvent effect, metal selectivity and metal ligand ratio were analyzed through UV-Visible study. Fluorescence response toward Cu2+ was carried to assess the fluorescent property of synthesized Schiff base. The probe exhibited a higher fluorescence enhancement in the presence of Cu2+ over other metal ions (Ni2+ , Zn2+ , Hg2+ , Co2+ , Cd2+ , Al3+ , Fe2+ , and Pb2+ ). The binding stoichiometry between L and Cu2+ has been investigated using Job's plot and Benesi-Hildebrand equation and it was found that ligand L can form 1:1 L-Cu2+ complex with binding constant (Ka ) of 4 × 104 LM-1 .
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