Affiliation:
1. School of Chemistry and Chemical Engineering Nanchang University Nanchang 330031 P. R. China
2. Physics of Energy Conversion and Storage Physic‐Department Technische Universität München James‐Franck‐Str. 1 85748 Garching Germany
3. Department of Chemical Sciences Bernal Institute University of Limerick Limerick V94T9PX Ireland
4. Chair of Inorganic and Metal‐Organic Chemistry Department of Chemistry Technische Universität München Lichtenbergstraße 4 85748 Garching b. München Germany
Abstract
AbstractLeveraging size effects, nanoparticles of metal‐organic frameworks, nanoMOFs, have recently gained traction, amplifying their scopes in electrochemical sensing. However, their synthesis, especially under eco‐friendly ambient conditions remains an unmet challenge. Herein, an ambient and fast secondary building unit (SBU)‐assisted synthesis (SAS) route to afford a prototypal porphyrinic MOF, Fe‐MOF‐525 is introduced. Albeit the benign room temperature conditions, Fe‐MOF‐525(SAS) nanocrystallites obtained are of ≈30 nm size, relatively smaller than the ones conventional solvothermal methods elicit. Integrating Fe‐MOF‐525(SAS) as a thin film on a conductive indium tin oxide (ITO) surface affords Fe‐MOF‐525(SAS)/ITO, an electrochemical biosensor. Synergistic confluence of modular MOF composition, analyte‐specific redox metalloporphyrin sites, and crystal downsizing contribute to its benchmark voltammetric uric acid (UA) sensing. Showcasing a wide linear range of UA detection with high sensitivity and low detection limit, this SAS strategy coalesces ambient condition synthesis and nanoparticle size control, paving a green way to advanced sensors.
Funder
Science Foundation Ireland
Deutsche Forschungsgemeinschaft
Subject
Biomaterials,Biotechnology,General Materials Science,General Chemistry
Cited by
4 articles.
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