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Engineering of Complex Macroporous Materials Through Controlled Electrodeposition in Colloidal Superstructures

Authors

  • Matthias Heim,

    1. Université de Bordeaux, Institut des Sciences Moléculaires – CNRS UMR5255, ENSCBP, 16 Avenue Pey Berland, 33607 Pessac, France
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  • Stéphane Reculusa,

    1. Université de Bordeaux, Centre de Recherche Paul Pascal – CNRS, UPR8641, Avenue Albert Schweitzer, 33600 Pessac, France
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  • Serge Ravaine,

    Corresponding author
    1. Université de Bordeaux, Centre de Recherche Paul Pascal – CNRS, UPR8641, Avenue Albert Schweitzer, 33600 Pessac, France
    • Université de Bordeaux, Centre de Recherche Paul Pascal – CNRS, UPR8641, Avenue Albert Schweitzer, 33600 Pessac, France
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  • Alexander Kuhn

    Corresponding author
    1. Université de Bordeaux, Institut des Sciences Moléculaires – CNRS UMR5255, ENSCBP, 16 Avenue Pey Berland, 33607 Pessac, France
    • Université de Bordeaux, Institut des Sciences Moléculaires – CNRS UMR5255, ENSCBP, 16 Avenue Pey Berland, 33607 Pessac, France.
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Abstract

Macroporous materials with a sophisticated architecture are obtained by electrochemical deposition of gold or polypyrrole in colloidal-crystal templates. The Langmuir–Blodgett technique enables assembly of sub-micrometric silica-particle monolayers on conductive gold substrates, thus leading to colloidal superstructures with an unprecedented control of their features at the single-bead-layer level. This allows the integration of deliberate planar defects or the elaboration of well-defined gradients in terms of sphere size. Controlled infiltration using electrochemical deposition preserves the architecture of the original templates and leads to inverse opals with well-defined pore structures after the removal of the inorganic particles.

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