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2D nanodot and nanowires arrays of titania and silica with tunable morphologies via self-assembled block copolymers and sol-gel chemistry

Title
2D nanodot and nanowires arrays of titania and silica with tunable morphologies via self-assembled block copolymers and sol-gel chemistry
Authors
Cha M.-A.Jang Y.H.Kim D.W.Kim D.H.
Ewha Authors
김동하
SCOPUS Author ID
김동하scopus
Issue Date
2008
Journal Title
Journal of the Korean Chemical Society
ISSN
1017-2548JCR Link
Citation
vol. 52, no. 4, pp. 387 - 393
Indexed
SCOPUS; KCI scopus
Abstract
Hybrid thin films composed of poly(styrene-b-ethylene oxide)(PS-b-PEO) and TiO2 (or SiO2) with controlled morphology were fabricated using cooperative sol-gel chemistry and block copolymer(BCP) self-assembly. The inorganic precursors were selectively incorporated into PEO, and the volume fraction of PEO domain is increased with increasing sol-gel precursor/BCP ratio. The generated films exhibit various surface morphologies ranging from 0D nanodot to 1D nanowire arrays. If the composition of hybrid sol-gel/BCP is symmetric, the resulting film has nanowire morphology, whereas nanodot pattern was obtained from asymmetric composition. Given the same sol-gel precursor /BCP ratio, more uniform arrays of inorganic nanodots were induced when BCP template with asymmetric composition was employed.
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자연과학대학 > 화학·나노과학전공 > Journal papers
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