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Two-dimensional arrays of strings of TiO2 nanoparticles via cooperative block copolymer self-assembly

Title
Two-dimensional arrays of strings of TiO2 nanoparticles via cooperative block copolymer self-assembly
Authors
Peng J.Knoll W.Park C.Kim D.H.
Ewha Authors
김동하
SCOPUS Author ID
김동하scopus
Issue Date
2008
Journal Title
Chemistry of Materials
ISSN
0897-4756JCR Link
Citation
vol. 20, no. 4, pp. 1200 - 1202
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
An unprecedented path to synthesize 2D arrays of strings of titanium dioxide (TiO2) nanoparticles was developed from cooperative self-assembly of poly(styrene-block-2-vinyl pyridine (Ps-b-P2VP) copolymer and titanium tetra-isopropoxide (TTIP)-based sol-gel precursors. Hybrid block copolymer (BCP)/titania thin films with nanohole and nanonetwork morphologies, depending on the relative composition of the mixed solution, were obtained by one-step spin coating of the mixed solution on silicon wafers. TiO2 moieties merged form spherical nanoparticles where nanoholes were present at the center of individual nanoparticles. Experimental investigation suggested a rare scheme to induce 2D arrays of strings of TiO2 nanoparticles based on cooperative BCP self-assembly that can be extended to obtain a wide range of inorganic nanostructures with tailored composition, size, and shape.
DOI
10.1021/cm7026042
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자연과학대학 > 화학·나노과학전공 > Journal papers
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