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.
Original language | English |
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Pages (from-to) | 387-393 |
Number of pages | 7 |
Journal | Journal of the Korean Chemical Society |
Volume | 52 |
Issue number | 4 |
DOIs | |
State | Published - 20 Aug 2008 |
Keywords
- Block copolymer
- Nanodot
- Nanowire
- Self-assembly
- Silica
- Sol-gel process
- Titania