کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1232243 | 1495280 | 2012 | 4 صفحه PDF | دانلود رایگان |
A new Schiff base based on vanillin and naphthalimide was designed and synthesized as fluorescent probe. The probe showed high selectivity for Ag+ over other metal ions such as Pb2+, Na+, K+, Cd2+, Ba2+, Cr3+, Zn2+, Cu2+, Ni2+, Ca2+, Al3+ and Mg2+ in aqueous solution. A new fluorescence emission was observed at 682 nm in the presence of Ag+ ion. The fluorescence intensity quenched with increasing the concentration of Ag+ at 682 nm. The method of job's plot confirmed the 1:2 complex between Ag+ and probe, and the mechanism was proposed.
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► The study lies in the design and synthesis of a new fluorescent probe (4DVN).
► The probe was synthesized based on vanillin and naphthalimide.
► The probe showed high selectivity for Ag+ over other metal ions in aqueous solution.
► The probe was sensitivity to high pH.
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 88, March 2012, Pages 56–59