Chain conformation in ultrathin polymer films

Article Abstract:

Small-angle neutron scattering has been used to characterize the chain structure and conformation of ultrathin polymer films. It appears that the contribution of surface roughness to the scattering data from the thin film shows itself at low q values. As anticipated, data from all films reached a q-independent plateau value. It is vital for the interfacial roughness to be properly characterized and accounted for when analyzing the experimental small-angle neutron scattering data for ultrathin films.

Thin films

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Self-directed self-assembly of nanoparticle/copolymer mixtures

Article Abstract:

Mixtures of diblock copolymers and either cadmium selenide- or ferritin- based nanoparticles exhibit cooperative, coupled self-assembly on the nanoscale are reported. Organization of both the polymeric and particulate entities is achieved without the use of external fields, opening a simple and general route for fabrication of nanostructured materials with hierarchical order.

United States, Science & research, Copolymers, Nanoparticles

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