Fig. 4. Inorganic nanoparticles for biosensing in the NIR-II window. (a) Schematic illustration of inorganic nanoparticle-based sensing. (b) Schematic illustration of NaCeF4:Er,Yb nanoparticles for H2O2 biosensing. (c) NIR-II luminescence emission response of the NaCeF4:Er,Yb sensor with the addition of H2O2. Ex: 980 nm. (d) NIR-II luminescence spectra of the NaCeF4:Er,Yb sensor after the addition of H2O, uricase, UA, and uricase + UA, respectively. Reproduced from ref. 56 with permission from the Royal Society of Chemistry, Copyright 2018.
