期刊
ANALYTICAL CHEMISTRY
卷 92, 期 14, 页码 10108-10113出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.analchem.0c02112
关键词
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资金
- Ministry of Science and Technology, China [2016YFA0203200]
- Youth Innovation Promotion Association CAS [2016208]
Designing the catalytic interface that preferentially attracts reactants is highly desirable for amplifying chemiluminescence (CL) emission. Herein, to boost the generation of reactive oxygen species (ROS) from dissolved O-2 molecule, flower-like cobalt hydroxide (f-Co(OH)(2)) based catalytic interface with hierarchical and porous architecture were in situ created in the coexistence of BSA and Co2+. Benefiting from the oxidase-like catalysis capability and the unique microstructure of f-Co(OH)(2), ROS was efficiently produced. Meanwhile, the capping ligands of BSA endowed the interface with the capability of enriching functionality through the interaction between BSA and luminol. 100-fold CL enhancement was achieved using the as-prepared catalytic interface compared with the classical luminol-Co2+ or luminol-BSA system. Moreover, the proposed catalytic amplification mechanism could be extended to the different proteins such as lysozyme, protamine, thrombin, papain. Based on the quenching effect on CL, a sensitive sensing platform was constructed for the determination of ascorbic acid with satisfied results. Our finding provided a novel all-in-one route to design the catalytic interface for amplifying CL emission.
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