A benign and facile process for forming monodisperse, hollow porous silica shells of a novel cubic morphology is identified. Templated on monodisperse crystalline germania cores that can be removed via aqueous dissolution, the hollow shells and their core-shell precursors are amenable to assembly into highly porous, gap-free near-monolayer films through manual and evaporative assembly techniques.
Bibliographical noteFunding Information:
The authors gratefully acknowledge financial support from the National Science Foundation ( CTS-0522518 ) and IPrime. Z.W.’s stay at UMN was supported by the China Scholarship Council . Characterization was carried out at the University of Minnesota Characterization Facility, which receives support from NSF through the National Nanotechnology Infrastructure Network.
- Hollow shells
- Thin films