Accessibility of cylindrical channels within patterned mesoporous silica films using nanoparticle diffusion
Article comments
DOI: 10.1039/b815055a
Abstract
Mesoporous silica films with well ordered nanochannels (approximately 7 nm in diameter) oriented parallel to the substrate were synthesized using supercritical carbon dioxide mediated silica deposition within templates comprised of triblock copolymers blended with strongly associating homopolymers. The films were patterned at the device level by conventional lithography and etched to yield periodic circular features approximately 20 µm in diameter. The nanoscale channels remained accessible to penetrant diffusion as shown by dye uptake experiments. The nanochannel arrays were used as miniature size exclusion columns to mediate nanoparticle diffusion.
Suggested Citation
HT Chen, TA Crosby, MH Park, S Nagarajan, VM Rotello, and JJ Watkins. "Accessibility of cylindrical channels within patterned mesoporous silica films using nanoparticle diffusion" Journal of Materials Chemistry 19.1 (2009): 70-74.
Available at: http://works.bepress.com/vincent_rotello/57