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Three-Dimensional BC/PEDOT Composite Nanofibers with High Performance for Electrode-Cell Interface.

Chuntao Chen, Ting Zhang1, Qi Zhang1

  • 1Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University , 199 Ren Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu Province 215123, China.

ACS Applied Materials & Interfaces
|November 10, 2015
PubMed
Summary

Researchers developed flexible, conductive bacterial cellulose (BC) nanofibers coated with poly(3,4-ethylenedioxythiophene) (PEDOT). These 3D nanostructured biomaterials show promise for enhanced neural cell activity and advanced biomedical applications.

Keywords:
bacterial cellulosebiocompatibleelectroactiveelectrode-cell interfacethree-dimensional nanofibers

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Area of Science:

  • Biomaterials Science
  • Nanotechnology
  • Electrochemistry

Background:

  • Biocompatible nanofibers are crucial for electrochemical and biomedical applications, requiring enhanced mechanical and electrical properties.
  • Bacterial cellulose (BC) offers a promising scaffold, but its inherent properties need modification for advanced functionalities.
  • Developing versatile nanostructured biomaterials is essential for next-generation devices.

Purpose of the Study:

  • To develop a facile method for creating electroactive and flexible 3D nanostructured biomaterials.
  • To synthesize poly(3,4-ethylenedioxythiophene) (PEDOT)-coated bacterial cellulose (BC) nanofibers with tunable properties.
  • To evaluate the performance of these 3D BC/PEDOT nanofibers for electrochemical and biomedical applications.

Main Methods:

  • In situ interfacial polymerization to coat bacterial cellulose (BC) nanofibers with poly(3,4-ethylenedioxythiophene) (PEDOT).
  • Controlled adjustment of PEDOT coating thickness via monomer concentration and reaction time.
  • Characterization of nanofiber diameter, pore size, electrical conductivity, mechanical properties, and cell cytotoxicity.
  • Electrical stimulation and calcium imaging of PC12 neural cells on BC/PEDOT nanofibers.

Main Results:

  • Achieved controllable PEDOT coating on BC nanofibers, yielding diameters from 30 to 200 nm.
  • Demonstrated tunable pore size and electrical conductivity of the 3D BC/PEDOT nanofibers.
  • Exhibited high specific surface area, excellent mechanical properties, electroactive stability, and low cell cytotoxicity.
  • Observed a significant increase in neural cell action potentials under electrical stimulation, indicating enhanced capacitance.

Conclusions:

  • The facile synthesis of 3D BC/PEDOT nanofibers provides a high-performance, electroactive, and flexible biomaterial.
  • These nanofibers offer tunable properties suitable for various demanding applications.
  • The enhanced neural cell activity suggests significant potential for improved electrode-cell interfaces in biosensing, drug delivery, and tissue engineering.