1. Gaussian effective interaction between flexible dendrimers of fourth generation: A theoretical and experimental study.
- Author
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Likos, C. N., Rosenfeldt, S., Dingenouts, N., Ballauff, M., Lindner, P., Werner, N., and Vo¨gtle, F.
- Subjects
DENDRIMERS ,MONOMERS ,GAUSSIAN processes ,SCATTERING (Physics) - Abstract
We propose a theory for the effective interaction between soft dendritic molecules that is based on the shape of the monomer density profile of the macromolecules at infinite dilutions. By applying Flory-type arguments and making use of the experimentally measured density profiles, we derive a Gaussian effective interaction whose parameters are determined by the size and monomer number of the dendrimers that are derived from small-angle neutron scattering (SANS) measurements. By applying this theory to concentrated dendrimer solutions we calculate theoretical structure factors and compare them with experimental ones, derived from a detailed analysis of SANS-data. We find very good agreement between theory and experiment below the overlap concentration, where drastic shape deformations of the dendrimers are absent. [ABSTRACT FROM AUTHOR]
- Published
- 2002
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