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Peroxidase-Like Reactivity at Iron-Chelation Sites in a Mesoporous Synthetic Melanin

References

ref title DOI material type comment
4257 1070 Peroxidase-Like Reactivity at Iron-Chelation Sites in a Mesoporous Synthetic Melanin https://doi.org/10.31635/ccschem.020.202000307 Composite a mesoporous NP form of poly-L-3,4-dihydroxyphenylalanine (referred to as 1 throughout this study), and its ability to mimic the catalytic properties of peroxidase when loaded with reduced [ 1-Fe(II)] and oxidized [ 1-Fe(III)] metals

Materials

ref material size size err size unit size type size comment BET b nanozyme b 10n b unit specific act sa 10n sa unit comment
8137 1070 Fe(II)- and Fe(III)-doped poly-L-DOPA Sample size is relatively unchanged after Fe replacement (davg = 143 and 153 nm). DLS results corroborate the uniform size distribution and demonstrate aqueous stability for 1-Mn(II) (dH = 261.8 nm, polydispersity index (PDI) = 0.101, ζ = −23.1 mV) and 1-Fe (dH = 306.3 nm, PDI = 0.138, ζ = −29.2 mV) 58.92

Kinetics

ref material enzyme type substrate pH T km km err km 10n km unit vmax vmax err vmax 10n vmax unit kcat kcat err kcat 10n kcat unit kcat/km kcat/km 10n kcat/km unit comment
7035 1070 1-Fe(II) POD H2O2 5.4 33.71 mM 286.70 nM/s 1070 1070
7034 1070 1-Fe(II) POD H2O2 6.0 38.46 mM 146.03 nM/s 1070 1070
7033 1070 1-Fe(III) POD H2O2 5.4 33.18 mM 120.64 nM/s 1070 1070

Applications

ref material application target method linear range linear ran unit LOD lod unit recovery comment
5983 1070 1-M a versatile redox-catalysis platform


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