4.8 Article

Bacterial Imprinting at Pickering Emulsion Interfaces

Journal

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 53, Issue 40, Pages 10687-10690

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201406049

Keywords

interfaces; molecular imprinting; Pickering emulsion; pre-polymers; self-assembly

Funding

  1. Swedish Research Council (VR)
  2. Swedish Research Council for Environment, Agricultural Sciences and Spatial Planning (FORMAS)
  3. VISTA
  4. Statoil
  5. Norwegian Academy of Science and Letters

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The tendency of bacteria to assemble at oil-water interfaces can be utilized to create microbial recognition sites on the surface of polymer beads. In this work, two different groups of bacteria were first treated with acryloyl-functionalized chitosan and then used to stabilize an oil-in-water emulsion composed of cross-linking monomers that were dispersed in aqueous buffer. Polymerization of the oil phase followed by removal of the bacterial template resulted in well-defined polymer beads bearing bacterial imprints. Chemical passivation of chitosan and cell displacement assays indicate that the bacterial recognition on the polymer beads was dependent on the nature of the pre-polymer and the target bacteria. The functional materials for microbial recognition show great potential for constructing cell-cell communication networks, biosensors, and new platforms for testing antibiotic drugs.

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