Influence of poly- l-lysine on the biomimetic growth of silica tubes in confined media

Pore channels of polycarbonate membranes were recently used as biomimetic models to study the effect of confinement on silicate condensation, leading to the formation of silica tubes exhibiting a core–shell structure. In this work, we preimmobilized poly- l-lysine on the membrane pores, leading to m...

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Bibliographic Details
Published in:Journal of colloid and interface science 2007-05, Vol.309 (1), p.44-48
Main Authors: Gautier, Clémentine, Lopez, Pascal J., Livage, Jacques, Coradin, Thibaud
Format: Article
Language:English
Subjects:
Biomimetics
Biomimetism
Chemical Sciences
Chemistry
Confinement
Exact sciences and technology
General and physical chemistry
Inorganic chemistry
Membranes, Artificial
Poly- l-lysine
Polylysine - chemistry
Porosity
Silica
Silicon Dioxide - chemistry
Sodium silicate
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Summary:Pore channels of polycarbonate membranes were recently used as biomimetic models to study the effect of confinement on silicate condensation, leading to the formation of silica tubes exhibiting a core–shell structure. In this work, we preimmobilized poly- l-lysine on the membrane pores, leading to modification of the tube shell formation process and variation in core particle size. These data strengthen previous assumptions on the role of confinement on silica growth, i.e., interfacial interactions and perturbation of the diffusion coefficient. They also suggest that this approach is suitable to investigate in more detail the contribution of confinement effects on silica biomineralization.
ISSN:0021-9797
1095-7103
DOI:10.1016/j.jcis.2006.12.011