Electrogenerated chemiluminescence behavior of Tb complex and its application in sensitive sensing Cd2+. (20th February 2017)

• Record Type: Journal Article
• Authors: Zhu, Yinggui; Zhao, Min; Hu, Xiaojuan; Wang, Xiaofang; Wang, Ling
• Is Part Of: Electrochimica acta. Volume 228(2017)
• Page Start: 1
• Page End: 8
• Publication Date: 2017-02-20
• Subjects: Electrogenerated Chemiluminescence(ECL) -- Tb complex -- pyridine-3-sulfonic acid -- Cd2+ assay -- ECL sensor; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2017.01.049
• Languages: English
• ISSNs: 0013-4686

Abstract

Graphical abstract: A novel Tb complex was prepared by a simple way used sulfonate ligands owing to their broaden applications in various areas and abundant coordination modes, and the compound showed excellent electrochemiluminescence properties under the optimized conditions. Then a facile and fast response ECL senor was fabricated for sensitive and specific detection of Cd 2+ based on effective quenching of ECL signal after addition of Cd 2+ . The low cost, facile preparation and simple instrument offer a alternative strategy for detection metal ions in real samples, and broaden the application fields of ECL system. Highlights: A novel Tb complex was synthesized with the ligand of pyridine-3-sulfonic acid, which has excellent ECL performance. A simple and straightforward ECL senor was constructed for sensitive and selective detection of Cd 2+ . Low cost, fast analysis and facile operation offered a promising method to detect the Cd 2+ in real samples. Abstract: In this paper, we report a novel rare earth metal complex with the weak ligand of aromatic sulphonic acid (pyridine-3-sulfonic acid, 3-pSO3 H), and characterized by FT-IR, UV–vis, energy-dispersive X-ray spectroscopy (EDX), electrochemiluminescence spectra, etc. Then an excellent electrochemiluminescence (ECL) signal was observed with K2 S2 O8 as the coreactant in NaAc-HAc buffer solution. For another thing, the electrochemical properties of the compound have been thoroughly investigated in acetonitrile solution, the possible ECL reaction mechanism was proposed as well. Furthermore, a simple and straightforward ECL platform was reported for sensitive and selective detection of Cd 2+ due to the effective quenching after addition of Cd 2+ . Other heavy/transition metal ions do not interfere with the sensing. The limit of detection is determined as 0.13 nM, the results suggested that as-prepared complex could be a promising material for developing ECL senors to detect the Cd 2+ rapidly indwell in environmental and practical samples.