Abstract
AbstractA functionalized black phosphorus (BP) nanocomposite was synthesized by non‐covalently combining ionic liquid (IL) and poly(diallyldimethylammonium chloride) (PDDA) with BP. The resultant nanocomposite exhibited good biocompatibility, favorable solubility, and enhanced electric conductivity to facilitate the immobilization of hemoglobin (Hb) and realize fast direct electron transfer with a rate constant (kET) of 15.36 s−1. The immobilized Hb displayed desirable electrocatalytic activity toward nitrite reduction in the range of 80 μM to 3.8 mM with a detection limit of 3.65 μM. The present work advances a new way to construct novel biofriendly BP‐based biosensors, biofuel cells, and bioelectronics with excellent sensitivity and stability.
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