Facile access to ultrasmall Eu2O3 nanoparticle-functionalized hollow silica nanospheres based on the spontaneous formation and decomposition of a cross-linked organic/inorganic hybrid core

We report a promising strategy for the facile synthesis of ultrasmall nanoparticle-functionalized hollow silica nanospheres by using a functional cross-linked organic/inorganic hybrid core, which can be obtained simply through successive spontaneous reactions in water.