Selective distributions of functionalized single-walled carbon nanotubes in a polymeric reverse hexagonal phase

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We have investigated the distributions of individually isolated and hydrophilically functionalized single-walled carbon nanotubes (p-SWNTs) in the Pluronic L121-water system at the reverse hexagonal phase using small-angle X-ray scattering (SAXS) and contrast-matched small-angle neutron scattering (SANS) measurements. As the p-SWNT-L121-water system is transitioned from the lamellar phase to the reverse hexagonal phase with temperature, p-SWNTs which were selectively distributed in the polar layers of the lamellar structure become selectively distributed in the cylindrical polar cores of the reverse hexagonal structure, forming a hexagonal array of p-SWNTs. This was clearly confirmed by the contrast-matched SANS measurements. The selective distribution of p-SWNTs in the reverse hexagonal phase is driven by the selective affinity of p-SWNTs to the polar domains of the block copolymer system. The method demonstrated in this study provides a new route for fabricating ordered SWNT superstructures and may be applicable for inorganic 1D nanoparticles such as semiconducting, metallic and magnetic nanorods which are of great interest.
Publisher
ROYAL SOC CHEMISTRY
Issue Date
2015-06
Language
English
Article Type
Article
Keywords

BLOCK-COPOLYMERS; LIQUID-CRYSTALLINE; LARGE-AREA; BEHAVIOR; ALIGNMENT; SYSTEM; FILM; DISPERSION; ARRAYS; WATER

Citation

SOFT MATTER, v.11, no.29, pp.5821 - 5827

ISSN
1744-683X
DOI
10.1039/c5sm00355e
URI
http://hdl.handle.net/10203/200803
Appears in Collection
NE-Journal Papers(저널논문)
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