title: Highly ordered and highly aligned two-dimensional binary superlattice of a SWNT/cylindrical-micellar system.
abstract: We report a highly ordered intercalated hexagonal binary superlattice of hydrophilically functionalized single-walled carbon nanotubes (p-SWNTs) and surfactant (C12 E5 ) cylindrical micelles. When p-SWNTs (with a diameter slightly larger than that of the C12 E5 cylinders) were added to the hexagonally packed C12 E5 cylindrical-micellar system, p-SWNTs positioned themselves in such a way that the free-volume entropies for both p-SWNTs and C12 E5 cylinders were maximized, thus resulting in the intercalated hexagonal binary superlattice. In this binary superlattice, a hexagonal array of p-SWNTs is embedded in a honeycomb lattice of C12 E5 cylinders. The intercalated hexagonal binary superlattice can be highly aligned in one direction by an oscillatory shear field and remains aligned after the shear is removed.
authors.affiliation: Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 305-701 (Republic of Korea) http://neutron.kaist.ac.kr.
authors.forename: Sung-Hwan
authors.initials: SH
authors.lastname: Lim
authors.forename: Hyung-Sik
authors.initials: HS
authors.lastname: Jang
authors.forename: Jae-Min
authors.initials: JM
authors.lastname: Ha
authors.forename: Tae-Hwan
authors.initials: TH
authors.lastname: Kim
authors.forename: Pawel
authors.initials: P
authors.lastname: Kwasniewski
authors.forename: Theyencheri
authors.initials: T
authors.lastname: Narayanan
authors.forename: Kyeong Sik
authors.initials: KS
authors.lastname: Jin
authors.forename: Sung-Min
authors.initials: SM
authors.lastname: Choi
mesh_terms: D057927:Hydrophobic and Hydrophilic Interactions; D008823:Micelles; D008958:Models, Molecular; D037742:Nanotubes, Carbon / Q000737:chemistry*; D013501:Surface-Active Agents / Q000737:chemistry
chemical_list: D008823:Micelles; D037742:Nanotubes, Carbon; D013501:Surface-Active Agents
keywords: binary superlattices; one-dimensional nanoparticles; self-assembly; shear-induced alignment; single-walled carbon nanotubes