Two-dimensional confinement of nanorods in block copolymer domains.
Gold nanorods (NRs) self-orient during the self-assembly of a symmetric poly(styrene-b-methyl methacrylate) (PS-b-PMMA) film. The NRs are selectively sequestered and confined in lamellar PMMA domains, which are narrower than the NR length. This confinement orients 71% of NRs within +/- 5 degrees of the lamella plane. During solvent annealing, a gradient in the concentration of NRs is observed. This route to produce alternating layers containing conducting NRs separated by dielectric domains has the potential for fabricating self-assembled nanodevices.
Department of Materials Science and Engineering and Laboratory for Research on the Structure of Matter, University of Pennsylvania, PA 19104-6272, USA.
Ranjan D
RD
Deshmukh
Yu
Y
Liu
Russell J
RJ
Composto
D006046:Gold / Q000737:chemistry*; D008854:Microscopy, Electron; D008958:Models, Molecular; D049329:Nanostructures / Q000737:chemistry*; D019904:Polymethyl Methacrylate; D011137:Polystyrenes; D013053:Spectrophotometry
D011137:Polystyrenes; D006046:Gold; D019904:Polymethyl Methacrylate