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Depletion Interactions between Nanoparticles: The Effect of the Polymeric Depletant Stiffness

A Density Functional Theory is employed to study depletion interactions between nanoparticles mediated by semiflexible polymers. The four key parameters are the chain contour length and the persistence length of the polymeric depletant, its radius of gyration, and the nanoparticle radius. In the Den...

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Detalles Bibliográficos
Autor principal: Egorov, Sergei A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9780964/
https://www.ncbi.nlm.nih.gov/pubmed/36559764
http://dx.doi.org/10.3390/polym14245398
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author Egorov, Sergei A.
author_facet Egorov, Sergei A.
author_sort Egorov, Sergei A.
collection PubMed
description A Density Functional Theory is employed to study depletion interactions between nanoparticles mediated by semiflexible polymers. The four key parameters are the chain contour length and the persistence length of the polymeric depletant, its radius of gyration, and the nanoparticle radius. In the Density Functional Theory calculation of the depletion interaction between the nanoparticles mediated by semiflexible polymers, the polymer gyration radius is kept constant by varying the contour length and the persistence length simultaneously. This makes it possible to study the effect of the chain stiffness on the depletion potential of mean force between the nanoparticles for a given depletant size. It is found that the depletion attraction becomes stronger for stiffer polymer chains and larger colloids. The depletion potential of mean force is used as input to compute the phase diagram for an effective one-component colloidal system.
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spelling pubmed-97809642022-12-24 Depletion Interactions between Nanoparticles: The Effect of the Polymeric Depletant Stiffness Egorov, Sergei A. Polymers (Basel) Article A Density Functional Theory is employed to study depletion interactions between nanoparticles mediated by semiflexible polymers. The four key parameters are the chain contour length and the persistence length of the polymeric depletant, its radius of gyration, and the nanoparticle radius. In the Density Functional Theory calculation of the depletion interaction between the nanoparticles mediated by semiflexible polymers, the polymer gyration radius is kept constant by varying the contour length and the persistence length simultaneously. This makes it possible to study the effect of the chain stiffness on the depletion potential of mean force between the nanoparticles for a given depletant size. It is found that the depletion attraction becomes stronger for stiffer polymer chains and larger colloids. The depletion potential of mean force is used as input to compute the phase diagram for an effective one-component colloidal system. MDPI 2022-12-09 /pmc/articles/PMC9780964/ /pubmed/36559764 http://dx.doi.org/10.3390/polym14245398 Text en © 2022 by the author. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Egorov, Sergei A.
Depletion Interactions between Nanoparticles: The Effect of the Polymeric Depletant Stiffness
title Depletion Interactions between Nanoparticles: The Effect of the Polymeric Depletant Stiffness
title_full Depletion Interactions between Nanoparticles: The Effect of the Polymeric Depletant Stiffness
title_fullStr Depletion Interactions between Nanoparticles: The Effect of the Polymeric Depletant Stiffness
title_full_unstemmed Depletion Interactions between Nanoparticles: The Effect of the Polymeric Depletant Stiffness
title_short Depletion Interactions between Nanoparticles: The Effect of the Polymeric Depletant Stiffness
title_sort depletion interactions between nanoparticles: the effect of the polymeric depletant stiffness
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9780964/
https://www.ncbi.nlm.nih.gov/pubmed/36559764
http://dx.doi.org/10.3390/polym14245398
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