Inorganic-Organic Hybrid Hierarchically Structured Methyl-modified Silica Monoliths

Abstract

Highly porous inorganic-organic hybrid monoliths with mesopores in a macroporous network have been prepared from methyltris(2-hydroxyethoxy)silane (MeGMS) and tetrakis(2-hydroxyethoxy)silane (EGMS) in the presence of an amphiphilic block copolymer. The amount of methyltris(2-hydroxyethoxy)silane (MeGMS) in the gel has been varied from 0 to 100 %. These glycol-modified silanes have the advantage of being water-soluble and thus allowing for a direct templating of liquid-crystalline surfactant mesophases without the presence of a homogenizing organic solvent such as ethanol. The wet gels have been dried by supercritical extraction with carbon dioxide.

In the present work, the sol-gel behaviour of these glycol-modified silanes is discussed especially with a focus on the formation of the meso- and macrostructure. In addition, the influences of the varying ratios of methyltris(2-hydroxyethoxy)silane on the structural features of the gels are investigated by various analytical techniques such as small angle X-ray scattering, nitrogen sorption, and scanning electron microscopy.

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References

  1. [1]

    K. Nakanishi, J. Porous. Mater. 4, 67 (1997).

    CAS  Article  Google Scholar 

  2. [2]

    K. Nakanishi, R. Takahashi, T. Nagakane, K. Kitayama, N. Koheiya, H. Shikata, N. Soga, J. Sol-Gel Sci. Technol. 17, 191 (2000).

    CAS  Article  Google Scholar 

  3. [3]

    Y. Sato, K. Nakanishi, K. Hirao, H. Jinnai, M. Shibayama, Y.B. Melnichenko, G.D. Wignall, Colloids and Surfaces A 187-188, 117 (2001).

    Article  Google Scholar 

  4. [4]

    J.-H. Smått, S. Schunk, M. Lindén, Chem. Mater. 15, 2354 (2003).

    Article  Google Scholar 

  5. [5]

    N. Hüsing, U. Schubert, Angew. Chem., Int. Ed. 37, 22 (1998).

    Article  Google Scholar 

  6. [6]

    F. Schwertfeger, N. Hüsing, U. Schubert, J. Sol-Gel Sci. Technol. 2, 103 (1994).

    CAS  Article  Google Scholar 

  7. [7]

    N. Hüsing, U. Schubert, K. Misof, P. Fratzl, Chem. Mater. 10, 3024 (1998).

    Article  Google Scholar 

  8. [8]

    A. Itagaki, K. Nakanishi, K. Hirao, J. Sol-Gel Sci. Technol. 26, 153 (2003).

    CAS  Article  Google Scholar 

  9. [9]

    J. Gun, O. Lev, O. Regev, S. Pevzner, A. Kucernak, J. Sol-Gel. Sci. Technol. 13, 189 (1998).

    CAS  Article  Google Scholar 

  10. [10]

    K. Kanamori, H. Yonezawa, K. Nakanishi, K. Hirao, H. Jinnai, J. Sep. Sci. 27, 874 (2004).

    CAS  Article  Google Scholar 

  11. [11]

    D.A. Loy, B.M. Baugher, C.R. Baugher, D.A. Schneider, K. Rahimian, Chem. Mater. 12, 3624 (2000).

    CAS  Article  Google Scholar 

  12. [12]

    N. Hüsing, C. Raab, V. Torma, A. Roig, H. Peterlik, Chem. Mater. 15, 2690 (2003).

    Article  Google Scholar 

  13. [13]

    N. Hüsing, C. Raab, V. Torma, Mat. Res. Soc. Symp. Proc. 775, P. 1.7.1 (2003).

    Article  Google Scholar 

  14. [14]

    D. Brandhuber, V. Torma, C. Raab, H. Peterlik, A. Kulak, N. Hüsing, Chem. Mater. (2004) accepted for publication.

    Google Scholar 

  15. [15]

    D. Brandhuber, V. Torma, C. Raab, H. Peterlik, N. Hüsing, J. Mater. Chem. (2004) submitted.

    Google Scholar 

  16. [16]

    R.C. Mehrotra, R.P. Narain, Indian J. Chem. 5, 444 (1966).

    Google Scholar 

  17. [17]

    M.A. Brook, J.D. Brennan, Y. Chen, WO 03/102001, to McMaster University, Ontario (2003).

  18. [18]

    F. Babonneau, L. Leite, S. Fontlupt, J. Mater. Chem. 9, 175 (1999).

    CAS  Article  Google Scholar 

  19. [19]

    D. Zhao, Q. Huo, J. Feng, B.F. Chmelka, G.D. Stucky, J. Am. Chem. Soc. 120, 6024 (1998).

    CAS  Article  Google Scholar 

Download references

Acknowledgments

We thank E. Eitenberger and Prof. Dr. G. Friedbacher for the SEM images.

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Correspondence to Doris Brandhuber.

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Brandhuber, D., Hüsing, N. & Peterlik, H. Inorganic-Organic Hybrid Hierarchically Structured Methyl-modified Silica Monoliths. MRS Online Proceedings Library 847, 320–327 (2004). https://doi.org/10.1557/PROC-847-EE3.1

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