Critical adsorption of multiple polyelectrolytes onto a nanosphere
- Employing extensive Monte Carlo computer simulations, we investigate in detail the properties of multichain adsorption of charged flexible polyelectrolytes (PEs) onto oppositely charged spherical nanoparticles (SNPs). We quantify the conditions of critical adsorption-the phase-separation curve between the adsorbed and desorbed states of the PEs-as a function of the SNP surface-charge density and the concentration of added salt. We study the degree of fluctuations of the PE-SNP electrostatic binding energy, which we use to quantify the emergence of the phase subtransitions, including a series of partially adsorbed PE configurations. We demonstrate how the phase-separation adsorption-desorption boundary shifts and splits into multiple subtransitions at low-salt conditions, thereby generalizing and extending the results for critical adsorption of a single PE onto the SNP. The current findings are relevant for finite concentrations of PEs around the attracting SNP, such as the conditions for PE adsorption onto globular proteins carryingEmploying extensive Monte Carlo computer simulations, we investigate in detail the properties of multichain adsorption of charged flexible polyelectrolytes (PEs) onto oppositely charged spherical nanoparticles (SNPs). We quantify the conditions of critical adsorption-the phase-separation curve between the adsorbed and desorbed states of the PEs-as a function of the SNP surface-charge density and the concentration of added salt. We study the degree of fluctuations of the PE-SNP electrostatic binding energy, which we use to quantify the emergence of the phase subtransitions, including a series of partially adsorbed PE configurations. We demonstrate how the phase-separation adsorption-desorption boundary shifts and splits into multiple subtransitions at low-salt conditions, thereby generalizing and extending the results for critical adsorption of a single PE onto the SNP. The current findings are relevant for finite concentrations of PEs around the attracting SNP, such as the conditions for PE adsorption onto globular proteins carrying opposite electric charges.…
| Author details: | Daniel L. Z. CaetanoORCiD, Sidney Jurado de CarvalhoORCiD, Ralf MetzlerORCiDGND, Andrey G. CherstvyORCiD |
|---|---|
| DOI: | https://doi.org/10.1098/rsif.2020.0199 |
| ISSN: | 1742-5689 |
| ISSN: | 1742-5662 |
| Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/32574545 |
| Title of parent work (English): | Interface : journal of the Royal Society |
| Subtitle (English): | splitting the adsorption-desorption transition boundary |
| Publisher: | Royal Society |
| Place of publishing: | London |
| Publication type: | Article |
| Language: | English |
| Date of first publication: | 2020/06/24 |
| Publication year: | 2020 |
| Release date: | 2023/07/07 |
| Tag: | critical adsorption; electrostatics; nanoparticles; phase-transition boundary; polyelectrolytes |
| Volume: | 17 |
| Issue: | 167 |
| Number of pages: | 10 |
| Funding institution: | Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior, Brazil; (CAPES)Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior; (CAPES) [001]; Sao Paulo Research Foundation (FAPESP)Fundacao de Amparo; a Pesquisa do Estado de Sao Paulo (FAPESP) [2018/01841-2]; Deutsche; Forschungsgemeinschaft (DFG)German Research Foundation (DFG) [ME; 1535/7-1]; Foundation for Polish Science (Fundacja na rzecz Nauki; Polskiej) within an Alexander von Humboldt Polish Honorary Research; Scholarship |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
| DDC classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Peer review: | Referiert |
| Publishing method: | Open Access / Hybrid Open-Access |
