|
KMID : 1059520080520040387
|
|
Journal of the Korean Chemical Society
2008 Volume.52 No. 4 p.387 ~ p.393
|
|
|
2D Nanodot and Nanowires Arrays of Titania and Silica with Tunable Morphologies via Self-Assembled Block Copolymers and Sol-gel Chemistry
|
|
Cha Min-Ah
Jang Yoon-Hee
Kim Dong-Wook
Kim Dong-Ha
|
|
|
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.
|
|
|
KEYWORD
|
|
|
Self-assembly, Block Copolymer, Titania, Silica, Nanodot, Nanowire, Sol-gel Process
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|