Multi-effective nanoplatform with down/upconversion dual-mode emissions for NIR-II imaging and PDT/PTT synergistic therapy of early atherosclerosis.

We design a multi-effective nanoplatform (CeO 2 :Nd@SiO 2 @CeO 2 :Yb,Er@SiO 2 -RB/MB/CD36) with down/upconversion dual-mode emissions and targeting ability in foam macrophages. Under NIR excitation, this nanoplatform can realize in vivo NIR-II imaging and PDT/PTT coordinated therapy for early AS simultaneously.