title: Electrochemistry and electrochemiluminescence from a redox-active metal-organic framework.
abstract: 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]2bpy}(2+) and Zn(2+); 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.
authors.affiliation: State Key Laboratory of Medicinal Chemical Biology, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), and Research Center for Analytical Sciences, College of Chemistry, Nankai University, Tianjin 300071, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Xu
authors.affiliation: State Key Laboratory of Medicinal Chemical Biology, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), and Research Center for Analytical Sciences, College of Chemistry, Nankai University, Tianjin 300071, China. Electronic address: xbyin@nankai.edu.cn.
authors.forename: Xue-Bo
authors.initials: XB
authors.lastname: Yin
authors.affiliation: State Key Laboratory of Medicinal Chemical Biology, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), and Research Center for Analytical Sciences, College of Chemistry, Nankai University, Tianjin 300071, China.
authors.forename: Xi-Wen
authors.initials: XW
authors.lastname: He
authors.affiliation: State Key Laboratory of Medicinal Chemical Biology, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), and Research Center for Analytical Sciences, College of Chemistry, Nankai University, Tianjin 300071, China; Dalian Institute of Chemical Physics, National Chromatographic R.&A. Center, Chinese Academy of Sciences, Dalian 116011, China.
authors.forename: Yu-Kui
authors.initials: YK
authors.lastname: Zhang
mesh_terms: D015374:Biosensing Techniques; D002384:Catalysis; D003042:Cocaine / Q000097:blood* / Q000737:chemistry; D004563:Electrochemistry; D006801:Humans; D008163:Luminescent Measurements; D008670:Metals / Q000737:chemistry; D055601:Organic Chemistry Phenomena; D010084:Oxidation-Reduction
chemical_list: D008670:Metals; D003042:Cocaine
keywords: Electrochemiluminescence; Electrochemistry; Metal-organic framework; Redox-active complex