Vacancy engineering of Cu2−xSe nanoparticles with tunable LSPR and magnetism for dual-modal imaging guided photothermal therapy of cancer

The near-infrared localized surface plasmon resonance and magnetism of Cu_2−xSe nanoparticles was tuned by doping with Fe³⁺ ions. The resultant multifunction hybrid nanostructure was demonstrated to be a novel nanotheranostic agent for imaging-guided photothermal therapy of cancer.