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Critical adsorption of periodic and random polyampholytes onto charged surfaces

Abstract

How different are the properties of critical adsorption of polyampholytes and polyelectrolytes onto charged surfaces? How important are the details of polyampholyte charge distribution on the onset of critical adsorption transition? What are the scaling relations governing the dependence of critical surface charge density on salt concentration in the surrounding solution? Here, we employ Metropolis Monte Carlo simulations and compute the scaling relations for critical adsorption for quenched periodic and random charge distributions along the polyampholyte chains. We also evaluate and discuss the dependence of the adsorbed layer width on solution salinity and details of the charge distribution. We contrast our findings to the known results for polyelectrolyte adsorption onto oppositely charged surfaces, in particular, in their dependence on electrolyte concentration.

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Publication details

The article was received on 15 Jun 2017, accepted on 08 Aug 2017 and first published on 08 Aug 2017


Article type: Paper
DOI: 10.1039/C7CP04040G
Citation: Phys. Chem. Chem. Phys., 2017, Accepted Manuscript
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    Critical adsorption of periodic and random polyampholytes onto charged surfaces

    D. L. Zago Caetano, S. J. de Carvalho, R. Metzler and A. G. Cherstvy, Phys. Chem. Chem. Phys., 2017, Accepted Manuscript , DOI: 10.1039/C7CP04040G

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