Superhydrophobic 3D Microstructures Assembled From 1D Nanofibers of Polyaniline
Superhydrophobic 3D Microstructures Assembled From 1D Nanofibers of Polyaniline
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DOI：
10.1002/marc.200700667
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发表时间：
2008-02
影响因子：
4.6
通讯作者：
Ying-Jie Zhu;Jiuming Li;Jiuming Li;M. Wan;Lei Jiang
中科院分区：
文献类型：
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作者：
Ying-Jie Zhu;Jiuming Li;Jiuming Li;M. Wan;Lei Jiang
在全氟癸二酸（PFSEA）作为掺杂剂的存在下，通过自组装过程，由 PANI 的 1D 纳米纤维自组装而成的超疏水蒲公英状 3D 微结构。通过SEM测量，蒲公英状微球（约5微米）由均匀的Y形连接纳米纤维组成，平均直径约210纳米，长度为几微米。蒲公英状的微观结构是无核的，具有中空的空腔，通过TEM测量，壳的厚度约为球体直径的三分之一。由于PFESA掺杂剂具有低表面能的全氟化碳链和两个亲水的-COOH端基，因此它具有掺杂剂，是“软模板”，同时带来超疏水功能。此外，有人提出，在氢键、π-π堆积和疏水相互作用的联合相互作用的驱动下，PANI 1D纳米纤维的自组装导致了3D微结构的形成。
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 -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.