Upconversion luminescence nanosensor for TNT selective and label-free quantification in the mixture of nitroaromatic explosives

A sensitive and selective upconversion luminescence nanosensor based on the amine functionalized NaYF4:Yb3+/Er3+ upconversion luminescence nanoparticles (UCNPs) has been developed for the rapid detection of TNT in the mixed solution of nitroaromatics containing TNP, DNT and NB independent of immunoassay and molecularly imprinted technology and complicated instruments.