Fluorescent probes for Pd²⁺ detection by poly(o-phenylenediamine) nanospheres with fluorescence enhancement

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• 作者：Zhoufeng Wang^a ; Fang Liao^a ; ^b ; ^{liaozhang2003@163.com}
• 关键词：Poly(o-phenylenediamine) ; Nanospheres ; Fluorescent probe ; Palladium ions
• 刊名：Synthetic Metals
• 出版年：2012
• 期刊代码：77_03796779
• 类别：ph
• 出版时间：April, 2012
• 卷：162
• 期：5-6
• 页码：444-447
• 文件大小：441 K

摘要

In this article, we developed a novel fluorescent probe for Pd²⁺ detection with the use of conjugated polymer poly(o-phenylenediamine) (PoPD) nanospheres as an effective sensing platform. The PoPD nanospheres were easily prepared via chemical polymerization of o-phenylenediamine (oPD) monomers by ammonium persulfate (APS) at room temperature. The general concept used in this approach lies in the fact that palladium react easily with a number of nitrogen-containing organic compounds, resulting in the formation of complexes in which nitrogen atoms are coordinatively bonded to palladium ions. The calibration graph was linear in the range of 0-240 ppm for Pd²⁺, and the detection limit was as sensitive as 1 ppm. The performances of the probe indicated that it could meet the selectivity requirements for biomedical and environmental application and also was sensitive enough to detect Pd²⁺ in environmental and biological samples.