Undulated cylinders of charged diblock copolymers

G. M. Grason, C. D. Santangelo

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


We study the cylinder to sphere morphological transition of diblock copolymers in aqueous solution with a hydrophobic block and a charged block. We find a metastable undulated cylinder configuration for a range of charge and salt concentrations which, nevertheless, occurs above the threshold where spheres are thermodynamically favorable. By modeling the shape of the cylinder ends, we find that the free-energy barrier for the transition from cylinders to spheres is quite large and that this barrier falls significantly in the limit of high polymer charge and low solution salinity. This suggests that observed undulated cylinder phases are kinetically trapped structures.

Original languageEnglish (US)
Pages (from-to)335-346
Number of pages12
JournalEuropean Physical Journal E
Issue number3
StatePublished - Jul 2006
Externally publishedYes

ASJC Scopus subject areas

  • Biotechnology
  • Biophysics
  • General Chemistry
  • General Materials Science
  • Surfaces and Interfaces


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