Soft X-ray microscopy to characterize polyelectrolyte assemblies

Karen Köhler, Christophe Déjugnat, Monique Dubois, Thomas Zemb, Gleb B. Sukhorukov, Peter Guttmann, Helmuth Möhwald

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

Transmission microscopy with soft X-rays (TXM) is applied to image in-situ polyelectrolyte assemblies in aqueous environment. The method is element specific and at this stage exhibits a lateral resolution of 20 nm. With the specific examples of hollow capsules and full spheres made of PAH/PSS polyelectrolyte multilayers, it is shown quantitatively that heat treatment irreversibly reduces the water content in the membrane. These experiments complement those reported recently on the polyion system PDADMAC/PSS, which shows a different glass-transition behavior. Finally, the potential and present limitations of TXM are discussed.

Original languageEnglish
Pages (from-to)8388-8393
Number of pages6
JournalJournal of Physical Chemistry B
Volume111
Issue number29
DOIs
Publication statusPublished - 26 Jul 2007
Externally publishedYes

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