STEM characterization on silica nanowires with new mesopore structures by space-confined self-assembly within nano-scale channels
- 23 January 2008
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Chemical Communications
- No. 11,p. 1338-1340
- https://doi.org/10.1039/b717461f
Abstract
“Critical” channel diameters were found (below which space confinement takes effect, leading to more uniform and ordered mesopore structures) in the study of evaporation-induced co-assembly of triblock-copolymer (P123) and silica molecular precursors (TEOS, tetraethyl orthosilicate) by employing channels in anodized aluminum oxide (AAO, 13–200 nm channel diameter) and in track-etched polycarbonate (EPC, 10–80 nm channel diameter) and for the first time we have observed a new mesopore structure (i.e., packed hollow spheres) in silica nanowires formed in AAO channels with diameters from 30 to 80 nm.Keywords
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