Abstract
Silicification at neutral pH and under ambient conditions in vitro is of great interest due to its relationship with silicification in vivo as well as for the benign conditions of the process. As it is important to know the exact group(s) or a particular site in the macromolecules that are responsible for the silicification under these conditions in vivo, poly-L-lysine (PLL) was chosen for this investigation in vitro. Here we report the use of tetramethoxysilane (TMOS) as a silica precursor and the utilization of poly-L-lysine (PLL) for silicification at neutral pH and under ambient conditions. We describe (1) the use of PLL to precipitate silica, (2) the effect of mixing of macromolecules PLL and poly(allylamine hydrochloride) (PAH) to control morphologies of the product, and (3) the formation of novel silica morphologies.
REFERENCES
N. Kroger, R. Deutzmann, and M. Sumper, Science 286, 1129 (1999).
N. Kroger, R. Deutzmann, C. Bergsdorf, and M. Sumper, Proc. Natl. Acad. Sci. USA 97(26), 14133 (2000).
S. V. Patwardhan and S. J. Clarson, in Synthesis and Properties of Silicones and Silicone-Modified Materials, S. J. Clarson, J. J. Fitzgerald, M. D. Owen, S. D. Smith, and M. E. Van Dyke, eds. (American Chemical Society, Washington DC, in press).
S. V. Patwardhan, N. Mukherjee, and S. J. Clarson, Silicon Chem. (2002), in press.
S. V. Patwardhan, N. Mukherjee, and S. J. Clarson, J. Inorg. Organomet. Polym. 11(2), 117 (2001).
V. Martin-Jezequel, M. Hildebrand, and M. A. Brzezinski, J. Phycol. 36(5), 821 (2000).
J. N. Cha, G. D. Stucky, D. E. Morse, and T. J. Deming, Nature 403, 289 (2000).
R. Tacke, Angew. Chem. Int. Ed. 38(20), 3015 (1999).
L. L. Brott, D. J. Pikas, R. R. Naik, S. M. Kirkpatrick, D. W. Tomlin, P. W. Whitlock, S. J. Clarson, and M. O. Stone, Nature 413, 291 (2001).
P. W. Whitlock, R. R. Naik, L. L. Brott, S. J. Clarson, D. W. Tomlin, and M. O. Stone, Polym. Preprints 42(1), 252 (2001).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Patwardhan, S.V., Mukherjee, N. & Clarson, S.J. The Use of Poly-L-Lysine to Form Novel Silica Morphologies and the Role of Polypeptides in Biosilicification. Journal of Inorganic and Organometallic Polymers 11, 193–198 (2001). https://doi.org/10.1023/A:1015293712319
Issue Date:
DOI: https://doi.org/10.1023/A:1015293712319