Résumé
Two‐photon‐absorbing (2hνA) nanoparticles provide safer cancer treatment opportunities than current therapies lacking spatial and temporal selectivity thanks to their 3D spatial resolution and very low scattering. In article number 1701248, Jonas G. Croissant and co‐workers describe porous and nonporous 2hνA silica, organosilica, and gold‐silica nanoparticles for bio‐imaging, drug delivery, and photodynamic therapy via photolysis, energy transfer, and electron transfer mechanisms.