Bright Tm3+-based downshifting luminescence nanoprobe operating around 1800 nm for NIR-IIb and c bioimaging

Abstract

Fluorescence imaging in the near-infrared region yields high-quality images that overcome the current depth limitations. Here, the authors report a Tm3 + -based nanoprobe for NIR-IIb/c imaging, providing references to future bioimaging beyond 1700 nm.