Silica gels with tunable nanopores through templating of the L3 phase

K. M. McGrath, D. M. Dabbs, N. Yao, K. J. Edler, I. A. Aksay, S. M. Gruner

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

We describe a detailed synthesis of a silicified inorgaric/organic nanoporous monolithic composite conforming to the lyotropic liquid crystalline L3 phase. The pore dimensions of the silicified L3 phase scale with the solvent volume fraction in the synthesis reaction mixture. Changing the solvent fraction in the initial solution changes the ultimate pore diameter in the silicate, providing a simple method for tuning the diameter of the pores in the matrix. The resulting monolith is optically isotropic and transparent with a nonperiodic network. Accessible pores (which permeate the entire structure) in the silicified materials correlate with the solvent domain of the original liquid crystalline phase and therefore negate the need to remove the surfactant in order to gain access to the pore network. Measured characteristic dimensions are from 6 to well over 35 nm. X-ray scattering studies indicate a low polydispersity in the pore diameters for a given solvent fraction. Transmission electron and atomic force microscope images are consistent with a random morphology and measured surface areas exceed 960 m2 g-1 in extracted materials.

Original languageEnglish
Pages (from-to)398-406
Number of pages9
JournalLangmuir
Volume16
Issue number2
Early online date24 Nov 1999
DOIs
Publication statusPublished - 25 Jan 2000

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Nanopores
Silica Gel
Silica gel
silica gel
porosity
Crystalline materials
Silicates
Liquids
Polydispersity
X ray scattering
Surface-Active Agents
Volume fraction
Microscopes
Surface active agents
Tuning
synthesis
liquids
Electrons
silicates
Composite materials

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

Cite this

McGrath, K. M., Dabbs, D. M., Yao, N., Edler, K. J., Aksay, I. A., & Gruner, S. M. (2000). Silica gels with tunable nanopores through templating of the L3 phase. Langmuir, 16(2), 398-406. https://doi.org/10.1021/la990098z

Silica gels with tunable nanopores through templating of the L3 phase. / McGrath, K. M.; Dabbs, D. M.; Yao, N.; Edler, K. J.; Aksay, I. A.; Gruner, S. M.

In: Langmuir, Vol. 16, No. 2, 25.01.2000, p. 398-406.

Research output: Contribution to journalArticle

McGrath, KM, Dabbs, DM, Yao, N, Edler, KJ, Aksay, IA & Gruner, SM 2000, 'Silica gels with tunable nanopores through templating of the L3 phase', Langmuir, vol. 16, no. 2, pp. 398-406. https://doi.org/10.1021/la990098z
McGrath KM, Dabbs DM, Yao N, Edler KJ, Aksay IA, Gruner SM. Silica gels with tunable nanopores through templating of the L3 phase. Langmuir. 2000 Jan 25;16(2):398-406. https://doi.org/10.1021/la990098z
McGrath, K. M. ; Dabbs, D. M. ; Yao, N. ; Edler, K. J. ; Aksay, I. A. ; Gruner, S. M. / Silica gels with tunable nanopores through templating of the L3 phase. In: Langmuir. 2000 ; Vol. 16, No. 2. pp. 398-406.
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