Three dimensional PEDOT nanowires network

• A three-dimensional porous alumina template has been grown by electropolymerization.
• The alumina template has been successfully filled with PEDOT.
• A three-dimensional PEDOT nanowire lattice has been obtained.

A three dimensional (3D) structure of poly(3,4-ethylenedioxythiophene) (PEDOT) nanowires have been prepared by electrochemical polymerization using 3D-alumina templates. The templates were synthesized by pulse anodization in an electrochemical bath. A 3D free standing network has been obtained after the template removal. The morphological analysis by electron microscopy shows the existence of a 3D PEDOT nanowires network whose nanowire diameter is around 20 nm for the vertical nanowires and 10 nm for the transversal connections. Electrical properties such as the I–V characteristics and the Seebeck coefficient were studied for the nanowires network. Also, the optical properties have been studied by Raman spectroscopy to confirm the creation of the PEDOT network. In summary, we have provided a very simple method to obtain three-dimensional nanostructures of conductive polymers. Any conductive polymer can be grown using our method.

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