Nanostructured Conjugated Polymer Films by Electrophoretic Deposition
Nanostructured Conjugated Polymer Films by Electrophoretic Deposition
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DOI：
10.1002/1616-3028(20020618)12:6/7
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发表时间：
2002-06
影响因子：
19
通讯作者：
K. Tada;M. Onoda
中科院分区：
文献类型：
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作者：
K. Tada;M. Onoda
报道了从共轭聚合物聚（3-十八烷基噻吩）（PAT18）的胶体悬浮液中电泳沉积纳米结构薄膜，以及通过简单的混合方法制备悬浮液。通过将聚合物的甲苯溶液倒入乙腈中来制备PAT18的胶体悬浮液，乙腈不是聚合物的溶剂。结果发现，所得悬浮液可稳定两周以上，稳定性与其中聚合物的浓度有关。与PAT18的甲苯溶液相比，胶体悬浮液的光学吸收和光致发光光谱显示出相当大的红移，并且光致发光发生猝灭，表明PAT18在悬浮液中固化。成功地从胶体悬浮液中电泳沉积 PAT18 薄膜。该薄膜表现出与旋涂薄膜几乎相同的光学吸收和光致发光光谱。另一方面，原子力显微镜研究揭示了电泳沉积薄膜的纳米结构表面形态。这种纳米结构薄膜有望成为电化学和传感器应用的有前途的材料。
The electrophoretic deposition of nanostructured films from colloidal suspensions of a conjugated polymer poly(3-octadecylthiophene) (PAT18), as well as the preparation of the suspension by a simple mixing method, is reported. A colloidal suspension of PAT18 was prepared by pouring a toluene solution of the polymer into acetonitrile, which is not a solvent for the polymer. It was found that the suspension obtained was stable for more than two weeks, and the stability was related to the concentration of the polymer therein. In comparison with a toluene solution of PAT18, the colloidal suspension shows a considerable red-shift in the optical absorption and photoluminescence spectra, as well as a quenched photoluminescence, indicating the solidification of PAT18 in the suspension. The electrophoretic deposition of a PAT18 film from the colloidal suspension was successfully carried out. The film shows almost the same optical absorption and photoluminescence spectra as those of a spin-coated film. On the other hand, an atomic force microscopy study revealed a nanostructured surface morphology of the electrophoretically deposited films. Such nanostructured films are expected to be promising materials for electrochemical and sensor applications.