Recent Advances in Small Copper Sulfide Nanoparticles for Molecular Imaging and Tumor Therapy

Small copper sulfide nanoparticles (s-Cu2–xS NPs, 0 < x < 1) with a core size of less than 5.5 nm have unique physicochemical characteristics and pharmacokinetic properties and have attracted substantial attention from researchers in the field of biomedicine in recent years. After exposure to near-infrared (NIR) light, s-Cu2–xS NPs can rapidly convert light energy into heat for photoacoustic imaging (PAI) and photothermal therapy (PTT). In...