Nonlinear electric response of polyampholytes

MO Khan; Torbjörn Åkesson; CE Woodward; Bo Jönsson

doi:10.1007/s00214-003-0466-y

Nonlinear electric response of polyampholytes

MO Khan, Torbjörn Åkesson, CE Woodward, Bo Jönsson

Teoretisk kemi

Forskningsoutput: Tidskriftsbidrag › Artikel i vetenskaplig tidskrift › Peer review

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Sammanfattning

The behavior of polyampholytes (PAs) in electric fields is investigated by Monte Carlo simulations. In bulk it is found that the response of the PA depends on the charge sequence. For small repeating units of positive and negative charges the response is linear, while bigger units results in a nonlinear response in both the induced dipole moment and the resulting polymer conformation. This is reflected in how PAs modify colloidal suspensions, and while PAs always decrease the repulsion between charged colloidal particles, some net-neutral PAs can even induce an effective attraction between the colloidal particles.

Originalspråk	engelska
Sidor (från-till)	126-129
Tidskrift	Theoretical Chemistry Accounts
Volym	110
Utgåva	3
DOI	https://doi.org/10.1007/s00214-003-0466-y
Status	Published - 2003

Bibliografisk information

The information about affiliations in this record was updated in December 2015.
The record was previously connected to the following departments: Theoretical Chemistry (S) (011001039)

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title = "Nonlinear electric response of polyampholytes",

abstract = "The behavior of polyampholytes (PAs) in electric fields is investigated by Monte Carlo simulations. In bulk it is found that the response of the PA depends on the charge sequence. For small repeating units of positive and negative charges the response is linear, while bigger units results in a nonlinear response in both the induced dipole moment and the resulting polymer conformation. This is reflected in how PAs modify colloidal suspensions, and while PAs always decrease the repulsion between charged colloidal particles, some net-neutral PAs can even induce an effective attraction between the colloidal particles.",

keywords = "linear, colloidal stability, polyampholytes, Monte Carlo simulations, response",

author = "MO Khan and Torbj{\"o}rn {\AA}kesson and CE Woodward and Bo J{\"o}nsson",

note = "The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Theoretical Chemistry (S) (011001039)",

year = "2003",

doi = "10.1007/s00214-003-0466-y",

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T1 - Nonlinear electric response of polyampholytes

AU - Khan, MO

AU - Åkesson, Torbjörn

AU - Woodward, CE

AU - Jönsson, Bo

N1 - The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Theoretical Chemistry (S) (011001039)

PY - 2003

Y1 - 2003

N2 - The behavior of polyampholytes (PAs) in electric fields is investigated by Monte Carlo simulations. In bulk it is found that the response of the PA depends on the charge sequence. For small repeating units of positive and negative charges the response is linear, while bigger units results in a nonlinear response in both the induced dipole moment and the resulting polymer conformation. This is reflected in how PAs modify colloidal suspensions, and while PAs always decrease the repulsion between charged colloidal particles, some net-neutral PAs can even induce an effective attraction between the colloidal particles.

AB - The behavior of polyampholytes (PAs) in electric fields is investigated by Monte Carlo simulations. In bulk it is found that the response of the PA depends on the charge sequence. For small repeating units of positive and negative charges the response is linear, while bigger units results in a nonlinear response in both the induced dipole moment and the resulting polymer conformation. This is reflected in how PAs modify colloidal suspensions, and while PAs always decrease the repulsion between charged colloidal particles, some net-neutral PAs can even induce an effective attraction between the colloidal particles.

KW - linear

KW - colloidal stability

KW - polyampholytes

KW - Monte Carlo simulations

KW - response

U2 - 10.1007/s00214-003-0466-y

DO - 10.1007/s00214-003-0466-y

M3 - Article

VL - 110

SP - 126

EP - 129

JO - Theoretical Chemistry Accounts

JF - Theoretical Chemistry Accounts

SN - 1432-881X

IS - 3

ER -

Nonlinear electric response of polyampholytes

Sammanfattning

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