56 / 2023-08-15 00:50:34

New approaches for covalent functionalization of few-layer black phosphorus with organic substrates

Black phosphorus,phosphorene,covalent functionalization,reactive intermediates

Phosphorus Material Chemistry and Applied Science > 1) Phosphorus chemistry in material science

Due to its unique in-plane anisotropic structure, high carrier mobility, and adjustable direct bandgap, 2D black phosphorus (BP) has emerged as an important graphene-like material for various micro- and optoelectronic, energy, catalytic, and biomedical applications. However, low environmental stability severely limits its processing in ambient conditions. Functionalization of BP enables the tailoring of its chemical, optical, and electronic properties and improves the oxidation stability of the material [1].

Herein, we report the first experimental approach for covalent functionalization of few-layer black phosphorus (FLBP) with carbene intermediates using dichlorocarbene as model reagent [2], as well as a facile one-pot approach for simultaneous electrochemical exfoliation and methylation of BP [3]. The obtained materials (BP–CCl₂ and BP–CH₃) were characterized by the main physicochemical methods. Additionally, the possibility of the application of functionalized FLBP as a metal-free electrochemical hydrogen evolution catalyst is also presented.