Ting Han

Interfacial Cascade Energy Transfer Enhances Lanthanide Luminescence for NIR-II Ratiometric Deep-Tissue Localization.

Near-infrared (NIR, 750-2500 nm) imaging is crucial for disease diagnosis, yet conventional wide-field bioimaging yields only two-dimensional (2D) information without depth. Here, we report a ratiometric fluorescence strategy for tissue depth determination using α-NaTmF4@NaErF4@NaYF4 nanoprobes. Under 808 nm excitation...