Erratum: Hypernetted chain approximation for the distribution of ions around a cylindrical electrode. II. Numerical solution for a model cylindrical polyelectrolyte [J. Chem. Phys. <b>8</b>
                  <b>3</b>, 361 (1985)]

González‐Tovar, Enrique; Lozada‐Cassou, Marcelo; Henderson, Douglas

doi:10.1063/1.453753

Cited by 16 publications

(31 citation statements)

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“…Taking the ion correlation e ect into account, an improvement (compared with PB predictions) for high electrolyte concentrations is observed (see [7], ®gure 18), particularly in the case of large hydrated counterions (such as Li ‡ ).…”

Section: Resultsmentioning

confidence: 97%

“…Electrophoretic mobility measurements for DNA in solutions of di erent monovalent counterions have been analysed by GonzaÂ lez-Tovar et al [7], who considered the DNA molecules as cylindrical polyelectrolytes. Taking the ion correlation e ect into account, an improvement (compared with PB predictions) for high electrolyte concentrations is observed (see [7], ®gure 18), particularly in the case of large hydrated counterions (such as Li ‡ ).…”

Section: Resultsmentioning

confidence: 99%

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Electrophoretic mobility of model colloids and overcharging: theory and experiment

et al. 2002

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Several theories claim that ion±ion correlations play an important role in the electric double layer of colloids. One of the most outstanding predictions is overcharging, which would take place at high electrolyte concentrations and surface charge densities. The counterion concentration next to the surface can become so large that the particle charge is overcompensated and the overcharging occurs. Sometimes this would also involve a reversal of the ± potential, but this phenomenon has been observed rarely through mobility measurements. This study explores the matter further. The electrophoretic mobility is measured for latex particles with moderate and extremely large surface charge densities at high ionic strengths (up to 2 M) in solutions of symmetric electrolytes. The results are analysed within the so-called hypernetted chain/mean-spherical approximation (HNC/MSA) and a Poisson±Boltzmann approach. In this way, the relevance of ion±ion correlations in practice and the occurrence of overcharging are probed experimentally.

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

Electrophoretic mobility of model colloids and overcharging: theory and experiment

et al. 2002

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“…The situation becomes much more complicated at finite salt-concentrations in aqueous solutions (i.e., water at room temperature in the presence of added salt), where the Coulomb coupling is (rather) weak especially for monovalent ions. Thereby, a direct application of Wigner crystal ideas is not straightforward enough to account for the unexpected overcharging at weak Coulomb coupling that was reported theoretically [63,64,65,66]), but unexplained, for monovalent salt-ions of large size.…”

Section: Monovalent Ions Near a Charged Spherementioning

confidence: 99%

Electrostatics in soft matter

Messina

2009

J. Phys.: Condens. Matter

197

216

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Abstract. Recent progress in the understanding of the effect of electrostatics in soft matter is presented. A vast amount of materials contains ions ranging from the molecular scale (e.g., electrolyte) to the meso/macroscopic one (e.g., charged colloidal particles or polyelectrolytes). Their (micro)structure and physicochemical properties are especially dictated by the famous and redoubtable long-ranged Coulomb interaction. In particular theoretical and simulational aspects, including the experimental motivations, will be discussed.

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“…For instance, the stability of colloidal dispersion depends on the distribution of small ions around the colloid. The electrophoretic mobility of the solution also can be rationalized in terms of the ion distribution [9,10,11,12] and most of the electrochemical reactions occur in this interfacial region [13].…”

Section: Introductionmentioning

confidence: 99%

Incorporation of excluded-volume correlations into Poisson-Boltzmann theory

2005

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We investigate the effect of excluded volume interactions on the electrolyte distribution around a charged macroion. First, we introduce a criterion for determining when hard-core effects should be taken into account beyond standard mean field Poisson-Boltzmann (PB) theory. Next, we demonstrate that several commonly proposed local density functional approaches for excluded volume interactions cannot be used for this purpose. Instead, we employ a non-local excess free energy by using a simple constant weight approach. We compare the ion distribution and osmotic pressure predicted by this theory with Monte Carlo simulations. They agree very well for weakly developed correlations and give the correct layering effect for stronger ones. In all investigated cases our simple weighted density theory yields more realistic results than the standard PB approach, whereas all local density theories do not improve on the PB density profiles but on the contrary, deviate even more from the simulation results.

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Erratum: Hypernetted chain approximation for the distribution of ions around a cylindrical electrode. II. Numerical solution for a model cylindrical polyelectrolyte [J. Chem. Phys. 8 3, 361 (1985)]

Abstract: Three-point extension hypernetted chain, conventional hypernetted chain, and superposition approximations: Numerical results for the force between two plates

Cited by 16 publications

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Electrophoretic mobility of model colloids and overcharging: theory and experiment

Electrophoretic mobility of model colloids and overcharging: theory and experiment

Electrostatics in soft matter

Incorporation of excluded-volume correlations into Poisson-Boltzmann theory

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