Competition between condensation of monovalent and multivalent ions in DNA aggregation

Yoram Burak*, Gil Ariel, David Andelman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

36 Scopus citations


We discuss the distribution of ions around highly charged PEs when there is competition between monovalent and multivalent ions, pointing out that in this case the number of condensed ions is sensitive to short-range interactions, salt and model-dependent approximations. This sensitivity is discussed in the context of recent experiments on DNA aggregation, induced by multivalent counterions such as spermine and spermidine.

Original languageAmerican English
Pages (from-to)53-58
Number of pages6
JournalCurrent Opinion in Colloid and Interface Science
Issue number1-2
StatePublished - Aug 2004
Externally publishedYes

Bibliographical note

Funding Information:
We are grateful to E. Raspaud and J.-L. Sikorav for numerous discussions. Support from the US–Israel Binational Science Foundation (B.S.F.) under grant No. 287/02 and the Israel Science Foundation under grant No. 210/02 is gratefully acknowledged.


  • DNA
  • Multivalent ions
  • Spermine


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