The stability of L 3 sponge phase in acidic solutions

Shilpa H. Bhansali, Abds Sami Malik, Jessica M. Jarvis, Ilke Akartuna, Daniel M. Dabbs, Jeffrey D. Carbeck, Ilhan A. Aksay

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14 Scopus citations


In the synthesis of the disordered lyotropic liquid crystalline L 3 sponge phase prepared with the cosurfactants cetylpyridinium chloride and hexanol, aqueous NaCl solution is used as the solvent. When this sponge phase is used as the template for L 3 silica-phase processing, we replace NaCl with HCl to facilitate the acid catalysis of tetramethoxysilane in forming a templated silica gel, assuming that changing the solvent from NaCl(aq) to HCl(aq) of equivalent ionic strength does not affect the stability range of the L 3 phase. In this work, we confirm that changing the pH of the solvent from neutral to acidic (with HCl) has negligible effect on the L 3 phase region. Equivalent ionic strength is provided by either NaCl(aq) or HCl(aq) solvent; therefore, a similar phase behavior is observed regardless of which aqueous solvent is used.

Original languageEnglish (US)
Pages (from-to)4060-4064
Number of pages5
Issue number9
StatePublished - Apr 25 2006

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Spectroscopy
  • General Materials Science
  • Surfaces and Interfaces
  • Electrochemistry


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