Morphology‐Dependent Peroxidase Mimicking Enzyme Activity of Copper Metal‐Organic Polyhedra Assemblies

Abstract

The morphology of nanomaterials (geometric shape and dimension) play a significant role in its various physical and chemical properties. Thus, it is essential to link morphology with performance in specific applications. For this purpose, the morphology of copper metal-organic polyhedra (Cu-MOP) can be modulated through distinct assembly process, which facilitates the exploration of the relationship between morphology and catalytic performance. In this work, the assemblies of Cu-MOP with three different morphologies (nanorods, nanofibers and nanosheets) were facilely prepared by the variation of solvent mixture of N, N-dimeth-ylformamide (DMF) and methanol, revealed the important role of the interaction between the surface group and the solvent on the morphology of these assemblies. Cu-MOP nanofibers exhibited the highest mimetic peroxidase enzyme activity over the Cu-MOP nanosheets and nanorods, which have been utilized in the detection of glucose. Cu-MOPs assemblies with tunable morphology accompanied with adjustable mimic peroxidase activity, had great potential applications in the field of bioanalytical chemistry and biomedicals.

Nanocatalysts for modulating antitumor immunity: fabrication, mechanisms and applications

“…6D). 276 Compared with the nanorods and nanosheets, Cu-MOP nanofibers showed the highest POD-like activity, which was ascribed to their large specific surface area with abundant exposed active sites. Therefore, morphology regulation provides the nanocatalyst with more catalytic active sites, improving their catalytic performance.…”

“…Reproduced with permission. 276 Copyright 2021, Wiley-VCH. (E) Oxygen vacancies provide photoinduced charge traps to inhibit electron-hole recombination.…”

“…(D) The peroxidase mimetic activity of Cu-MOP nanomaterials with different morphologies. Reproduced with permission 276. Copyright 2021, Wiley-VCH.…”

Biomass‐Derived Porous Carbon as an Enzyme Mimic for Colorimetric Detection of Ascorbic Acid

“…Various nanozymes have been verified to possess good peroxidase activity, such as metal oxides, [2] noble metal, [3] carbon nanomaterials, [4] metal‐organic frameworks [5] . The catalytic property of mimic enzymes is directly affected by composition, structure and morphology of nanomaterials [6] . Introducing heteroatoms, constructing heterojunction and dispersing in multi‐dimensional materials are used in catalytic synergy, enhancement of adsorption capacity and acceleration of carrier transfer, enhancing the activity of mimic enzymes in previous works [7] .…”

“…[5] The catalytic property of mimic enzymes is directly affected by composition, structure and morphology of nanomaterials. [6] Introducing heteroatoms, constructing heterojunction and dispersing in multi-dimensional materials are used in catalytic synergy, enhancement of adsorption capacity and acceleration of carrier transfer, enhancing the activity of mimic enzymes in previous works. [7] For instance, in the catalytic system based on Por-NiS 2 /GO, the modified porphyrins facilitate the charge separation to promote the formation hydroxyl radical (•OH) and superoxide radical (•O 2 À ) due to the matched energy levels of porphyrin and NiS 2 .…”