期刊
BIOSENSORS & BIOELECTRONICS
卷 68, 期 -, 页码 197-203出版社
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/j.bios.2014.12.031
关键词
Electrochemistry; Electrochemiluminescence; Metal-organic framework; Redox-active complex
类别
资金
- National Basic Research Program of China (973 Program) [2015CB932001, 2011CB707703]
- Natural Science Foundation of China [21375064]
- Research Fund for the Doctoral Program of Higher Education [20130031110016]
The marriage of metal-organic frameworks (MOFs) and electrochemiluminescence (ECL) can combine their merits together. Designing ECL-active MOF with a high electron transfer capacity and high stability is critical for ECL emission. Here we reported the ECL from a redox-active MOF prepared from {Ru[4,4'-(HO2C)(2)-bpy](2)bpy}(2+) and Zn2+; a property of MOFs has not been reported previously. The MOF structure is independent of its charge and is therefore stable electrochemically. The redox-activity and well-ordered porous structure of the MOF were confirmed by its electrochemical properties and ECL emission. The high ECL emission indicated the ease of electron transfer between the MOF and co-reactants. Furthermore, the MOF exhibited permselectivity, charge selectivity, and catalytic selectivity along with a stable and concentration-dependent ECL emission toward co-reactants. ECL mechanism was proposed based on the results. The detection and recovery of cocaine in the serum sample was used to validate the feasibility of MOF- based ECL system. The information obtained in this study provides a better understanding of the redox properties of MOFs and their potential electrochemical applications. (C) 2014 Elsevier B.V. All rights reserved.
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