Long-range ordered thin films of block copolymers prepared by zone-casting and their thermal conversion into ordered nanostructured carbon.
Large-scale alignment of lamellae in thin films of diblock copolymers containing polyacrylonitrile and poly(n-butyl acrylate) was achieved by casting copolymer solution on a silicon substrate moved away at a constant speed from the casting nozzle (zone-casting). Grazing incidence small-angle X-ray scattering revealed that the lamellae, which were perpendicular to the substrate, were also aligned over macroscopic scale in the direction perpendicular to the casting direction. Such long-range ordered block copolymer films were then converted by pyrolysis into nanostructured carbons, with excellent preservation of lamellar morphology and orientation.
Tang
Chuanbing
C
Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, PA 15213, USA.
Tracz
Adam
A
Kruk
Michal
M
Zhang
Rui
R
Smilgies
Detlef-M
DM
Matyjaszewski
Krzysztof
K
Kowalewski
Tomasz
T
D000179:Acrylates / Q000138:chemical synthesis / Q000737:chemistry*; D000180:Acrylic Resins / Q000138:chemical synthesis / Q000737:chemistry*; D005583:Fourier Analysis; D018625:Microscopy, Atomic Force; D037742:Nanotubes, Carbon / Q000737:chemistry*; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry*
D000179:Acrylates; D000180:Acrylic Resins; D037742:Nanotubes, Carbon; D011108:Polymers; C498324:poly(n-butyl acrylate); C010504:polyacrylonitrile