STEM characterization on silicananowires with new mesopore structures by space-confined self-assembly within nano-scale channels

Literature Information

Publication Date 2008-01-23
DOI 10.1039/B717461F
Impact Factor 6.222
Authors

Michael Z. Hu, Donglu Shi, Douglas Blom


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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.

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DOI: 10.1039/B918591G

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