Journal
ACS APPLIED NANO MATERIALS
Volume 6, Issue 9, Pages 8036-8045Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.3c01404
Keywords
ultrathin metal-organic framework; nanozyme; oxidase activity; biosensor; fluorescence
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The utilization of ultrathin Mn-metal-organic framework (Mn-UMOF) nanosheets as oxidase-like nanozymes has been demonstrated. Mn-UMOF exhibited superior nanozyme activity compared to bulk Mn-BMOF, showing enhanced oxidation of chromogenic TMB and ABTS. Based on this, a colorimetric sensing platform for L-cysteine detection has been established, allowing for the detection of other amino acids and natural compounds such as urea and glucose.
The utilization of ultrathin Mn-metal-organic framework (Mn-UMOF) nanosheets for oxidase-like nanozyme activity has been demonstrated. The Mn-UMOF exhibited superior nanozyme activity to oxidize chromogenic TMB and ABTS than the bulk Mn-BMOF. Based on this fact, a platform for the colorimetric sensing of L-cysteine (L-cys) has been established over the detection of other amino acids and natural compounds such as urea and glucose. In addition, the Mn-UMOF has the capability of catalyzing the oxidation of amplex red to the fluorescent first oxidized product, which has been used to develop a fluorescence turn-off sensor for the selective sensing of L-cys.
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