Sequence disorder-induced first order phase transition in confined polyelectrolytes

Stepanyan, V.; Badasyan, Artem; Morozov, V.; Mamasakhlisov, Yevgeni S.; Podgornik, Rudolf

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Title:	Sequence disorder-induced first order phase transition in confined polyelectrolytes
Authors:	ID Stepanyan, V. (Author) ID Badasyan, Artem (Author) ID Morozov, V. (Author) ID Mamasakhlisov, Yevgeni S. (Author) ID Podgornik, Rudolf (Author)
Files:	https://pubs.aip.org/aip/jcp/article-pdf/doi/10.1063/5.0228162/20188245/134906_1_5.0228162.pdf https://pubs.aip.org/aip/jcp/article-pdf/doi/10.1063/5.0228162/20188245/134906_1_5.0228162.pdf
Language:	English
Work type:	Unknown
Typology:	1.01 - Original Scientific Article
Organization:	UNG - University of Nova Gorica
Abstract:	We consider a statistical mechanical model of a generic flexible polyelectrolyte, comprised of identically charged monomers with long-range electrostatic interactions and short-range interactions quantified by a disorder field along the polymer contour sequence, which is randomly quenched. The free energy and the monomer density profile of the system for no electrolyte screening are calculated in the case of a system composed of two infinite planar bounding surfaces with an intervening oppositely charged polyelectrolyte chain. We show that the effect of the contour sequence disorder, mediated by short-range interactions, leads to an enhanced localization of the polyelectrolyte chain and a first order phase transition at a critical value of the inter-surface spacing. This phase transition results in an abrupt change of the pressure from negative to positive values, effectively eliminating polyelectrolyte mediated bridging attraction.
Keywords:	polyelectrolyte, Anderson localization, Poisson-Boltzmann equation, phase transitions, electrostatics, polyelectrolytes, Edwards equation, nonlinear schrodinger equation, nucleic acids
Publication status:	Published
Publication version:	Version of Record
Publication date:	01.01.2024
Year of publishing:	2024
Number of pages:	str. 1-11
Numbering:	Vol. 161, issue 13, [article no.] 134906
PID:	20.500.12556/RUNG-9382-aebf7fae-6375-ec42-ab5d-8c41fb978693
COBISS.SI-ID:	210190595
ISSN:	0021-9606
UDC:	544
ISSN on article:	0021-9606
eISSN:	1089-7690
DOI:	10.1063/5.0228162
NUK URN:	URN:SI:UNG:REP:WLYCJCQH
Publication date in RUNG:	04.10.2024
Views:	948
Downloads:	2
Metadata:
:	STEPANYAN, V., BADASYAN, Artem, MOROZOV, V., MAMASAKHLISOV, Yevgeni S. and PODGORNIK, Rudolf, 2024, Sequence disorder-induced first order phase transition in confined polyelectrolytes. The Journal of chemical physics [online]. 2024. Vol. 161, no. 13, 134906, p. 1–11. [Accessed 7 April 2025]. DOI 10.1063/5.0228162. Retrieved from: https://pubs.aip.org/aip/jcp/article-pdf/doi/10.1063/5.0228162/20188245/134906_1_5.0228162.pdf Copy citation