Our collaboration work on long-lived phosphorescence of silica nanoparticles with Profs. Woosung Kwon (Sookmyung Women’s University) and Kyeonghak Kim (Hanyang University) has been published in Chemical Engineering Journal. This work reports a use of defect-engineered silica nanoparticle that presents room-temperature phosphorescence with extended lifetime up to a few milliseconds-scale. Such a long lifetime allows tissue autofluorescence-free in vivo bioimaging to clearly distinguish the luminescence signals from the nanoparticles that target the tumor. Kyunghwan is one of the co-first authors who led this work. Contrats!