| Autor: |
Frühbeißer, Sabine, Gröhn, Franziska |
| Předmět: |
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| Zdroj: |
Macromolecular Chemistry & Physics; Sep2017, Vol. 218 Issue 17, pn/a-N.PAG, 14p |
| Abstrakt: |
In this study, the self-assembly of ionic porphyrins and polyelectrolytes in dependence on the polyelectrolyte architecture and molecular mass is investigated systematically. The systems consist of tetravalent anionic meso-tetrakis(4-sulfonatophenyl)-porphyrin (TPPS), which is combined with different positively charged macroions: poly(amidoamine) dendrimer of generation 4, linear polylysine of different molecular masses, poly(diallyldimethylammonium chloride), and a cylindrical poly- l-lysine brush. Light scattering reveals defined supramolecular assemblies with hydrodynamic radii between RH = 30 nm and RH = 180 nm. Further, size and shape of TPPS-polyelectrolyte assemblies are substantially affected by the polyelectrolyte architecture but less by the molecular mass of the polyelectrolyte. ζ-potential measurements detect an assembly charge corresponding to the excess component that is responsible for the aggregate being stable in solution. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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