ABSTRACT Reported herein is the highly efficient quenching of fluorescent organic nanoparticles by 2, 4-dinitrotoluene and 2, 4, 6-trinitrotoluene. These fluorescent nanoparticles are formed from the hydrophobic collapse of fluorescent polymer chains and display quenching efficiencies that are in line with the highest reported literature values. Moreover, the fluorescent quenching occurs only for the fluorescent nanoparticles, and not ...