Self-assembly of linear arrays of semiconductor nanoparticles on carbon single-walled nanotubes |
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Authors: | Engtrakul Chaiwat Kim Yong-Hyun Nedeljković Jovan M Ahrenkiel S Phil Gilbert Katherine E H Alleman Jeff L Zhang S B Mićić Olga I Nozik Arthur J Heben Michael J |
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Affiliation: | National Renewable Energy Laboratory, 1617 Cole Boulevard, Golden, Colorado 80401, USA. chaiwat_engtrakul@nrel.gov |
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Abstract: | Ligand-stabilized nanocrystals (NCs) were strongly bound to the nanotube surfaces by simple van der Waals forces. Linear arrays of CdSe and InP quantum dots were formed by self-assembly using the grooves in bundles of carbon single-walled nanotubes (SWNTs) as a one-dimensional template. A simple geometrical model explains the ordering in terms of the anisotropic properties of the nanotube surface. CdSe quantum rods were also observed to self-organize onto SWNTs with their long axis parallel to the nanotube axis. This approach offers a route to the formation of ordered NC/SWNT architectures that avoids problems associated with surface derivatization. |
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