Nonlinear electric response of polyampholytes

MO Khan, Torbjörn Åkesson, CE Woodward, Bo Jönsson

Research output: Contribution to journalArticlepeer-review

1 Citation (SciVal)


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.
Original languageEnglish
Pages (from-to)126-129
JournalTheoretical Chemistry Accounts
Issue number3
Publication statusPublished - 2003

Bibliographical 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)

Subject classification (UKÄ)

  • Theoretical Chemistry


  • linear
  • colloidal stability
  • polyampholytes
  • Monte Carlo simulations
  • response


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