Superoxide Dismutase-like Activity of Zeolitic Imidazolate Framework Nanoparticles Comprising Biomimetic Imidazolato-bridged CuZn Units.
Chemistry
; 29(38): e202300881, 2023 Jul 06.
Article
em En
| MEDLINE
| ID: mdl-37096647
ABSTRACT
Nanoparticles exhibiting enzymatic functions have garnered considerable attention due to their structural robustness and the profusion of active sites that can be introduced to a single nanosized particle. Here we report that nanosized mixed-metal zeolitic imidazolate frameworks (ZIFs) show a superoxide dismutase (SOD)-like catalytic activity. We chose a ZIF composed of copper and zinc ions and 2-methylimidazole, CuZn-ZIF-8, in which the Cu and Zn ions are bridged by an imidazolato ligand. This coordination geometry closely mimics the active site of CuZn superoxide dismutase (CuZnSOD). The CuZn-ZIF-8 nanoparticles exhibit potent SOD-like activity, attributed to their porous nature and numerous copper active sites, and also possess exceptional recyclability.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Zeolitas
/
Nanopartículas
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article