Superhydrophobic 3D Microstructures Assembled From 1D Nanofibers of Polyaniline

Authors

  • Ying Zhu,

    1. Center of Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, P. R. China
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  • Jiuming Li,

    1. Center of Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, P. R. China
    2. School of Chemistry and Environmental Engineering, China University of Mining and Technology, Beijing 100083, P. R. China
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  • Meixiang Wan,

    Corresponding author
    1. Center of Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, P. R. China
    • Center of Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, P. R. China. Fax: (+86) 10–82627566
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  • Lei Jiang

    Corresponding author
    1. Center of Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, P. R. China
    • Center of Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, P. R. China. Fax: (+86) 10–82627566
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Abstract

Superhydrophobic dandelion-like 3D microstructures self-assembled from 1D nanofibers of PANI were prepared by a self-assembly process in the presence of perfluorosebacic acid (PFSEA) as a dopant. The dandelion-like microspheres (about 5 µm) are composed of uniform Y-shaped junction nanofibers of about 210 nm average diameter and several micrometers in length, as measured by SEM. The dandelion-like microstructure is coreless with a hollow cavity, and the shell thickness is about one third of the sphere diameter, as measured by TEM. Since PFESA dopant has a low surface energy perfluorinated carbon chain and two hydrophilic [BOND]COOH end groups, it has dopant, is a “soft-template” and brings about superhydrophobic functions at the same time. Moreover, it is proposed that the self-assembly of PANI 1D nanofibers, driven by a combined interaction of hydrogen bonding, π-π stacking and hydrophobic interactions, leads to the formation of the 3D microstructures.

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