Polyelectrolyte Multilayering on a Charged Sphere

Details Polyelectrolyte Multilayering on a Charged Sphere Polyelectrolyte Multilayering on a Charged Sphere

2002-12-12

arxiv.org/abs/cond-mat/0212291v2

Langmuir, Vol 19, pp. 4473-4482 (2003)

Physics

Condensed Matter

Soft Condensed Matter

24 Pages - 15 (main) Figs - RevTeX 4 - published version

Scientific paper

10.1021/la026988n

The adsorption of highly \textit{oppositely} charged flexible polyelectrolytes onto a charged spherical surface is investigated by means of Monte Carlo simulations in a fashion which resembles the layer-by-layer deposition technique introduced by Decher. Electroneutrality is insured at each step by the presence of monovalent counterions (anions and cations). We study in detail the structure of the \textit{equilibrium} complex. Our investigations of the first few layer formations strongly suggest that multilayering in spherical geometry is not possible as an equilibrium process with purely electrostatic interactions. We especially focus on the influence of specific (non-electrostatic) short range attractive interactions (e.g., Van der Waals) on the stability of the multilayers.

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