Emerging 2D pnictogens for biomedical applications

Two-dimensional(2D)materials composed of single pnictogen element,namely,2D pnictogens(e.g.,black phosphorus,arsenene,antimonene and bismuthine),have recently showed remarkable potential for biomedical applications,especially after the rapid development of black phosphorus.With unique optical and electronic properties,2D pnictogens are considered as promising nanoagents for biosensors,diagnosis and therapy.In this review,after brief introduction of the structure,properties,synthesis strategies,and biocompatibility of 2D pnictogens,their biomedical applications including anti-tumor,anti-inflammation,anti-bacterial,neurodegenerative treatment and tissue repairing are reviewed.The major obstacles and opportunities of 2D pnictogens are also discussed.This review provides a short yet timely summary on the synthesis and biomedical applications of emerging 2D pnictogens.