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Lipophilic quantum dots were placed on the surface of a horseradish peroxidase (HRP) modified glassy carbon (GC) electrode by evaporative deposition. Direct electron transfer of immobilized HRP was found to occur. The deposition of quantum dots (QDs) was characterized by various ways, and the results indicated that the direct electron transfer of HRP was promoted preferably when QDs were deposited...
Laccase was immobilized on an electrode modified with a cysteine self-assembled monolayer and coated with functionalized quantum dots. The immobilized laccase is capable of directly transferring an electron. Immobilized laccase retained its activity to oxidize ascorbic acid (AA), and the apparent Michaelis–Menten constant was found to be 0.47 mM. The modified electrode was used to determine AA in...
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