Regensburg 2013 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 47: Charged Soft Matter

CPP 47.2: Vortrag

Freitag, 15. März 2013, 10:00–10:15, H34

Single molecule investigation of complexes of oppositely charged bottle brushes — •Ivan Raguzin^1,2, Georgi Stoychev^1,2, and Leonid Ionov¹ — ¹Leibniz-IPF Dresden, 01069 Dresden, Germany — ²TU Dresden, 01062 Dresden, Germany

We experimentally investigated complexation of oppositely charged bottle polymer brushes at the single-molecule level using AFM and CryoTEM. It was found that polyelectrolyte complexes have ”scrambled-egg” morphology where oppositely charged polymer chains are not oriented parallel to each other but are intercrossed. Moreover, we observed that in CryoTEM polymer chains in IPEC appear brighter compared to the background that is in contrast to darker polymer chains of the individual components. We believe that the reason for this effect is the release of counter ions of the polymer brushes due to the neutralization of the charged side groups of the polymer chains [1].

[1] Soft Matter, 2013, Advance Article