Journal
TALANTA
Volume 238, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.talanta.2021.123041
Keywords
Metal-organic frameworks; Mimic enzyme; Luminol-H2O2; Chemiluminescence; Glutathione
Categories
Funding
- National Natural Science Foundation of China (NSFC) [21675124, 22071194]
- NSF of Shaanxi Province [2019JM-013]
- Open Foundation of Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education [KLSNFM2020001]
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The novel complex [Co(L)(H2O)2] (1) showed unique 1D chain structure and stability, exhibited excellent catalytic activity and substrate affinity, with recyclability and low storage requirements. A chemiluminescence method for detecting glutathione was proposed based on its characteristics, achieving satisfactory results.
A novel [Co(L)(H2O)2] (1) was obtained by hydrothermal method and it exhibited a 1D chain with exposed carboxyl groups, the unique coordination mode made it have unusual physical and chemical stability. Meanwhile, 1 showed peroxidase-like and weak oxidase-like activity. 1 as a peroxidase mimic enzyme had an excellent affinity for the substrates luminol and H2O2. Compared with HRP, 1 had catalytic activity in a wide pH range and showed the best catalytic activity at pH 7.4. Meanwhile, the catalysis process of 1 was reversible and recyclable, and the catalytic activity remained stable after different pH and temperatures and long-time storage. Based on the inhibition of glutathione on luminol-H2O2-MOF 1 chemiluminescence signal, a chemiluminescence method for the determination of glutathione has been proposed with high sensitivity and selectivity and had been applied for detecting glutathione in cell lysate with satisfactory results.
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