Self-cleaning resins

Vaclav Janout, Sasha B. Myers, Richard A. Register, Steven L. Regen

Research output: Contribution to journalArticlepeer-review

39 Scopus citations


This paper introduces a fundamentally new concept in adsorbents, whereby the sorption of an aqueous solute by a cross-linked polymer is controlled by a gel to liquid-crystalline phase transition. To demonstrate proof of principle, a bilayer forming surfactant, N,N-dioctadecyl,N,N-dimethylammonium bromide (DODAB) has been immobilized onto a cation exchange resin, Dowex 50WX2, and its thermotropic phase behavior and solute-adsorption properties have been investigated. Examination by a combination of differential scanning calorimetry and X-ray scattering has confirmed the retention of a gel to liquid-crystalline phase transition of the surfactant, occurring between 296 and 318 K. Adsorption measurements that were made for 4-chlorotetrahydropyran, 1,2-dichloroethane, and benzyl alcohol have also confirmed uptake by the resin in the liquid-crystalline phase and release in the gel phase.

Original languageEnglish (US)
Pages (from-to)5756-5759
Number of pages4
JournalJournal of the American Chemical Society
Issue number17
StatePublished - May 2 2007

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • Biochemistry
  • Catalysis
  • Colloid and Surface Chemistry


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