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Conducting Polypyrrole Nanotube Arrays as an Implant Surface: Fabricated on Biomedical Titanium with Fine-Tunability by Means of Template-Free Electrochemical Polymerization

Authors

  • Jingwen Liao,

    1. School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641 (P. R. China), Fax: (+86) 020-22236088
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  • Prof. Chengyun Ning,

    Corresponding author
    1. School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641 (P. R. China), Fax: (+86) 020-22236088
    • Chengyun Ning, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641 (P. R. China), Fax: (+86) 020-22236088

      Haobo Pan, Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Science, Shenzhen 518055 (P. R. China), Fax: (+86) 0755-86585230

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  • Guoxin Tan,

    1. Institute of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006 (P. R. China)
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  • Prof. Guoxin Ni,

    1. Department of Orthopedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515 (P. R. China)
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  • Haobo Pan

    Corresponding author
    1. Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Science, Shenzhen 518055 (P. R. China), Fax: (+86) 0755-86585230
    • Chengyun Ning, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641 (P. R. China), Fax: (+86) 020-22236088

      Haobo Pan, Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Science, Shenzhen 518055 (P. R. China), Fax: (+86) 0755-86585230

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Abstract

With the aim of inducing angiogenesis and neurogenesis between implants and bone tissue through electrical signals, conducting polypyrrole (PPy) nanotube arrays (CPNAs) as an implant surface were designed. Large-area CPNAs were fabricated on biomedical titanium by means of template-free electrochemical polymerization based on prenucleation film. The nanoarchitectures were able to be finely tuned between cylindrical and conical nanotubes by tailoring the electrochemical parameters, which were accompanied by a shift in the crystallinity. Accordingly, we propose insight into the fine-tunable fabrication of CPNAs. The prenucleation film possessed a great capability for forming sufficient active nucleation sites that created an isotropic two-dimensional environment, which is a desired medium for facilitating the fabrication of large-area CPNAs on biomedical titanium. Moreover, the fine-tunability of the nanoarchitectures results from the dependency of pyrrole solubility in phosphate buffer solution on the electrochemical conditions.

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