Soft Interaction Between Dissolved Dendrimers: Theory and Experiment

Abstract

Using small-angle neutron scattering and liquid integral equation theory, we relate the structure factor of flexible dendrimers of 4th generation to their average shape. The shape is measured as a radial density profile of monomers belonging to a single dendrimer. From that, we derive an effective interaction of Gaussian form between pairs of dendrimers and compute the structure factor using the hypernetted chain approximation. Excellent agreement with the corresponding experimental results is obtained, without the use of adjustable parameters. The present analysis thus strongly supports the previous finding that flexible dendrimers of low generation present fluctuating structures akin to star polymers.

20 pages, 4 figures, submitted to Macromolecules on July 24, 2000

References in corpus (8)

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• Dendrimer Assisted Dispersion of Carbon Nanotubes: A Molecular Dynamics Study
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• Universal behavior of soft-core fluids near the threshold of thermodynamic stability
• Nanotechnology and Quasicrystals: From self assembly to photonic applications
• Microscopic Density Functional Theory for Dendrimers