Hydrophobic and flexible conductive films consisting of PEDOT:PSS-PBA/fluorine-modified silica and their performance in weather stability
作者:Hui-En Yin、Feng-Hsi Huang、Wen-Yen Chiu
DOI:10.1039/c2jm31352a
日期:——
In this research, an innovative approach to increase the hydrophobic property and weather stability of the flexible conductive films was demonstrated. A flexible PEDOT:PSS-PBA conductive film was prepared by using poly(styrenesulfonate)-poly(butyl acrylate) (PSS-PBA) soft latex as a polymeric template to prepare poly(3,4-ethylenedioxythiophene) (PEDOT). Fluorine-modified silica was synthesized and surface-modified by the coupling agents, 3-(trimethoxysilyl) propyl methacrylate (MSMA) and 1H,1H,2H,2H-perfluorooctyltriethoxysilane (PFOTES). The formed fluorine-modified silica was introduced into a PEDOT:PSS-PBA conductive material by two approaches: blending and coating. The optoelectronic property and surface morphology of the PEDOT:PSS-PBA/silica thin film were investigated. Furthermore, the hydrophobic property was measured by the water contact angle. In addition, the weather stability was also examined to compare the conductivity decay in the high humidity circumstance. The result showed that flexible PEDOT:PSS-PBA/silica conductive films not only sustained the excellent optoelectronic property from PEDOT:PSS, but also achieved a superior water contact angle (>90°) and weather stability.
在这项研究中,展示了一种提高柔性导电薄膜疏水性和耐候稳定性的创新方法。以聚(苯乙烯磺酸)-聚(丙烯酸丁酯)(PSS-PBA)软胶乳为聚合物模板制备聚(3,4-亚乙二氧基噻吩)(PEDOT),制备出柔性 PEDOT:PSS-PBA 导电薄膜。合成了氟改性二氧化硅,并用偶联剂 3-(三甲氧基硅基)甲基丙烯酸丙酯(MSMA)和 1H,1H,2H,2H-全氟辛基三乙氧基硅烷(PFOTES)对其进行表面改性。通过混合和涂覆两种方法,将形成的氟改性二氧化硅引入到 PEDOT:PSS-PBA 导电材料中。研究了 PEDOT:PSS-PBA/ 二氧化硅薄膜的光电特性和表面形态。此外,还通过水接触角测量了疏水特性。此外,还考察了其气候稳定性,以比较其在高湿度环境下的电导率衰减情况。结果表明,柔性 PEDOT:PSS-PBA/silica 导电薄膜不仅保持了 PEDOT:PSS 的优异光电特性,而且还具有出色的水接触角(大于 90°)和气候稳定性。