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Ricardo Starbird1 Roy Zamora1 Inés Ardao2 Carlos A. García-González3

1, Instituto Tecnológico de Costa Rica, Cartago, Cartago, Costa Rica
2, Universidade de Santiago de Compostela, Santiago de Compostela, Santiago de Compostela, Spain
3, Universidade de Santiago de Compostela, Santiago de Compostela, Santiago de Compostela, Spain

In this work, nanostructured Poly-(3,4-ethylenedioxythiophene) (PEDOT) were synthesized using starch/κ-carrageenan aerogels as templates. A biopolymer (i.e. κ-carrageenan) was added to the formulation as dopant agent of the conductive polymer to enhance the biocompatibility and the electrical response. The physicochemical, morphological, mechanical and electrical properties of the PEDOT and templates were characterized. An impedance model was proposed for the material, evidencing the incorporation of κ-carrageenan in the PEDOT nanostructuration process improved the electrical behavior of the PEDOT in the aerogel structure. The synergistic combination of the inherent electrical properties of the PEDOT, the advantageous features of κ-carrageenan as dopant agent and the porous morphology provided by the aerogel template resulted in electroactive PEDOT nanostructures with promising properties as extracellular matrix in biological cell culture.

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