Electrochemiluminescence of terbium (III) complex and its potential application for the determination of bacterial endospores

• Published in: Journal of luminescence 2013-09, Vol.141, p.71-75
• Main Authors: Chen, Kun, Liu, Junying, Shu, Guibo, Yang, Yu, Zhu, Yinggui, Zhao, Guangchao
• Format: Article
• Language: English
• Subjects: Bacteria; Bacterial endospore; Binary Tb (III) complex; Biological and medical sciences; Chemiluminescence; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Electrochemiluminescence (ECL); Exact sciences and technology; Fundamental and applied biological sciences. Psychology; General aspects, investigation technics, apparatus; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Other luminescence and radiative recombination; Physics; Pyridine-2, 6-dicarboxylate (DPA); Tissues, organs and organisms biophysics
• ISSN: 0022-2313; 1872-7883
• DOI: 10.1016/j.jlumin.2013.03.018

Binary Tb (III) complex with pyridine-2, 6-dicarboxylate (DPA) was synthesized by a simple process and its electrochemiluminesence (ECL) property in an aqueous solution was investigated carefully for the first time. Based on the ECL property of the synthesized Tb (III) complex, a new method to detect DPA with high sensitivity was established. Under the optimal condition, the linear relationship between enhanced ECL and the concentration of DPA was 2.0×10−7–3.4×10−5mol/L and the limit of detection (LOD) was 6.0×10−8mol/L. Furthermore, the possible mechanism for the ECL behavior of Tb (III) complex was also investigated. •ECL property of Tb (DPA)3(NO3)3(H2O)3 at aqueous solution was explored for the first time.•The mechanism of its ECL was proposed; upon optimal condition, a great ECL phenomenon would be observed.•Pyridine-2, 6-dicarboxylate(DPA) was first detected by using the ECL method.•The discovery of Tb (DPA)3(NO3)3(H2O)3 enriched the ECL materials field.