Premium
Porphyrin–Polyelectrolyte Nanoassemblies: The Role of Charge and Building Block Architecture in Self‐Assembly
Author(s) -
Frühbeißer Sabine,
Gröhn Franziska
Publication year - 2017
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201600526
Subject(s) - polyelectrolyte , dendrimer , porphyrin , supramolecular chemistry , cyanine , polymer chemistry , chemistry , self assembly , cationic polymerization , chemical engineering , ionic strength , j aggregate , chemical physics , molecule , photochemistry , organic chemistry , aqueous solution , optics , polymer , physics , fluorescence , engineering
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 R H = 30 nm and R H = 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.