Concentration‐Dependent Subcellular Distribution of Ultrasmall Near‐Infrared‐Emitting Gold Nanoparticles

) efficiently. Combining with the concentration-dependent subcellular distribution, the luminescent AuNPs show photocytotoxicity in the relative low concentration region. These findings facilitate the fundamental understanding of the biological behaviors and potential cytotoxicity of ultrasmall luminescent AuNPs toward future theranostics.