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Micro-patterned films of bio-functionalized conducting polymers for cellular engineering.

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    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
    |October 25, 2017
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    Area of Science:

    • Materials Science
    • Biotechnology
    • Polymer Chemistry

    Background:

    • Conducting polymers (CPs) offer tunable properties, making them suitable for bioelectronic devices like biosensors and implantable electrodes.
    • Patterned CP films with specific surface chemistries are valuable for advanced bioelectronic applications.
    • A novel hydrogel-mediated electropolymerization technique allows direct patterning of CP films with spatially-addressable chemistries.

    Purpose of the Study:

    • To extend hydrogel-mediated electropolymerization for patterning diverse CPs.
    • To explore bio-functionalized CP films for cell adhesion studies.
    • To demonstrate the utility of patterned, bio-functionalized CPs in cellular engineering.

    Main Methods:

    • Hydrogel-mediated electropolymerization was used to pattern polypyrrole (PPy) and poly(3,4-ethylenedioxythiophene) (PEDOT) films.
    • Films were characterized for morphology, impedance, and chemical composition.
    • Patterned CP films were bio-functionalized by incorporating a laminin peptide.

    Main Results:

    • Patterned PPy and PEDOT films were successfully generated with various dopants.
    • Bio-functionalized CP films incorporating laminin peptide showed significantly higher cell adhesion compared to polystyrene sulfonate (PSS)-doped films.
    • Characterization confirmed the morphology, impedance, and chemical composition of the patterned films.

    Conclusions:

    • Hydrogel-mediated electropolymerization is a versatile method for creating patterned CP films with tunable properties.
    • Bio-functionalized CP films hold significant potential for applications in cellular engineering and tissue regeneration.
    • The developed technique enables the creation of sophisticated building-blocks for next-generation bioelectronics.