Analytical Sciences

Phenanthroline Derivative Fluorescent Probe for Rapid and Sensitive Detection of Silver(I)

Weiwei YU,* Zhiru HU,* Xinyu FU,* Yanchun LI,** Junfeng SU,* Ting YANG,* Songrui LI,* Zhiguang SONG,* and Guodong FENG*

*College of Chemistry, Jilin University, Changchun 130021, China
**Institute of Theoretical Chemistry, Jilin University, Changchun 130021, China

In the present work, a phenanthroline derivative (2-(2-methoxyphenyl)-4-phenyl-1,10-phenanthroline, MPP), as a fluorescent probe, was synthesized to realize a rapid, simple and sensitive detection of silver(I). The detection conditions of Ag⁺ were optimized. This fluorescent probe has the advantages of a fast reaction time, a wide pH applicable range, and a low detection limit, exhibiting a good linear response between the fluorescence intensity and the concentration in the range of 0.05 – 1.5 μmol/L for Ag⁺. The detection limit is as low as 3.38 × 10⁻⁸ mol/L (S/N = 3). This probe had been used to detect Ag⁺ in real samples, and the recovery efficiency of spiked Ag⁺ had been also tested. The recovery efficiency is satisfactory, ranging from 92.0 to 105.4%. Therefore, this fluorescent probe should provide a new choice for the quantitative detection of silver ions in environmental water samples.

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