Nanoparticles in Block-Copolymer Films Studied by Specular and Off-Specular Neutron Scattering

For the design of multicompositional materials with a spatially defined order of different components symmetric polystyrene(deuterated)-block-polybuthyl methacrylate P(Sd-b-BMA) lamellar thin films are used as a structure-directing matrix for the nanoparticle arrangement. A P(Sd-b-BMA) diblock-copol...

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Bibliographic Details
Published in:Langmuir 2003-09, Vol.19 (19), p.7783-7788
Main Authors: Lauter-Pasyuk, V, Lauter, H. J, Gordeev, G. P, Müller-Buschbaum, P, Toperverg, B. P, Jernenkov, M, Petry, W
Format: Article
Language:English
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Summary:For the design of multicompositional materials with a spatially defined order of different components symmetric polystyrene(deuterated)-block-polybuthyl methacrylate P(Sd-b-BMA) lamellar thin films are used as a structure-directing matrix for the nanoparticle arrangement. A P(Sd-b-BMA) diblock-copolymer film spontaneously self-assembles upon annealing into a lamellar multilayer and orders the PS-coated nanoparticles, incorporated into the polymer solution prior to annealing, in a periodic lamellar structure. Specular reflection and off-specular neutron scattering were applied to determine the distribution of magnetite Fe3O4 nanoparticles in a symmetric P(Sd-b-BMA) film with a concentration of the nanoparticles of 7% of the volume fraction. From the experiments on neutron specular reflection and off-specular scattering, we obtained information about the distribution of the nanoparticles within the lamellae and about the distortion of the lamellar order of the copolymer matrix.
ISSN:0743-7463
1520-5827
DOI:10.1021/la026818a