A new Schiff base based on vanillin and naphthalimide as a fluorescent probe for Ag+ in aqueous solution

作者：Zhou Yanmei^*; Zhou Hua; Ma Tongsen; Zhang Junli; Niu Jingyang

来源：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , 2012, 88: 56-59.

DOI：10.1016/j.saa.2011.11.054

• Schiff base
• Naphthalimide
• Vanillin
• Ag+

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.

• 出版日期2012-3
• 单位河南大学