Department of Chemistry and Biochemistry and California NanoSystems Institute, University of California, Los Angeles, CA 90095, USA.
Proc Natl Acad Sci U S A. 2010 Nov 16;107(46):19673-8. doi: 10.1073/pnas.1008595107. Epub 2010 Nov 1.
The method employed for depositing nanostructures of conducting polymers dictates potential uses in a variety of applications such as organic solar cells, light-emitting diodes, electrochromics, and sensors. A simple and scalable film fabrication technique that allows reproducible control of thickness, and morphological homogeneity at the nanoscale, is an attractive option for industrial applications. Here we demonstrate that under the proper conditions of volume, doping, and polymer concentration, films consisting of monolayers of conducting polymer nanofibers such as polyaniline, polythiophene, and poly(3-hexylthiophene) can be produced in a matter of seconds. A thermodynamically driven solution-based process leads to the growth of transparent thin films of interfacially adsorbed nanofibers. High quality transparent thin films are deposited at ambient conditions on virtually any substrate. This inexpensive process uses solutions that are recyclable and affords a new technique in the field of conducting polymers for coating large substrate areas.
所采用的沉积方法决定了导电聚合物纳米结构在各种应用中的潜在用途，如有机太阳能电池、发光二极管、电致变色和传感器。一种简单且可扩展的薄膜制造技术，可以在纳米尺度上重复控制厚度和形态均匀性，对于工业应用来说是一个有吸引力的选择。在这里，我们证明了在适当的体积、掺杂和聚合物浓度条件下，由诸如聚苯胺、聚噻吩和聚(3-己基噻吩)等导电聚合物纳米纤维的单层组成的薄膜可以在几秒钟内形成。一个热力学驱动的基于溶液的过程导致界面吸附纳米纤维的透明薄膜的生长。高质量的透明薄膜在环境条件下沉积在几乎任何基底上。这种廉价的工艺使用可回收的溶液，并为导电聚合物领域的大面积基底涂层提供了一种新技术。
