Elongated silica nanoparticles with a mesh phase mesopore structure by fluorosurfactant templating

Bing Tan, Alan Dozier, Hans Joachim Lehmler, Barbara L. Knutson, Stephen E. Rankin

Research output: Contribution to journalArticlepeer-review

57 Scopus citations


Mesoporous silica materials with pore structures such as 2D hexagonal close packed, bicontinuous cubic, lamellar, sponge, wormholelike, and rectangular have been made by using surfactant templating sol-gel processes. However, there are still some "intermediate" phases, in particular mesh phases, that are formed by surfactants but which have not been made into analogous silica pore structures. Here, we describe the one-step synthesis of mesoporous silica with a mesh phase pore structure. The cationic fluorinated surfactant 1,1,2,2-tetrahydroperfluorodecylpyridinium chloride (HFDePC) is used as the template. Like many fluorinated surfactants, HFDePC forms intermediate phases in water (including a mesh phase) over a wider range of compositions than dp hydrocarbon surfactants. The materials produced by this technique are novel elongated particles in which the layers of the mesh phase are oriented orthogonal to the main axis of the particles.

Original languageEnglish
Pages (from-to)6981-6984
Number of pages4
Issue number17
StatePublished - Aug 17 2004

ASJC Scopus subject areas

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


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