Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan S7N 5C9, Canada.
Langmuir. 2011 Sep 6;27(17):10657-65. doi: 10.1021/la201773e. Epub 2011 Jul 27.
Mixed monolayer surfactant films of perfluorotetradecanoic acid and the photopolymerizable diacetylene molecule 10,12-pentacosadiynoic acid were prepared at the air-water interface and transferred onto solid supports via Langmuir-Blodgett (LB) deposition. The addition of the perfluoroacid to the diacetylene surfactant results in enhanced stabilization of the monolayer in comparison with the pure diacetylene alone, allowing film transfer onto a solid substrate without resorting to addition of cations in the subphase or photopolymerization prior to deposition. The resulting LB films consisted of well-defined phase-separated domains of the two film components, and the films were characterized by a combination of atomic force microscope (AFM) imaging and fluorescence emission microscopy both before and after photopolymerization into the highly emissive "red form" of the polydiacetylene. Photopolymerization of the monolayer films resulted in the formation of diacetylene bilayers, which were highly fluorescent, with the apparent rate of photopolymerization and the fluorescence emission of the films being largely unaffected by the presence of the perfluoroacid.
全氟十四酸与可光聚合双炔分子 10,12-二十五碳二炔酸的混合单层表面活性剂膜在气/水界面制备，并通过 Langmuir-Blodgett（LB）沉积转移到固体载体上。与纯双炔表面活性剂相比，全氟酸的加入增强了单层的稳定性，允许在不添加亚相中的阳离子或在沉积前进行光聚合的情况下将膜转移到固体基底上。所得的 LB 膜由两种膜成分的明确定域相分离组成，并且通过原子力显微镜（AFM）成像和荧光发射显微镜的组合在光聚合成高发光的“红色形式”之前和之后对其进行了表征聚二炔。单层膜的光聚合导致双炔双层的形成，其具有高荧光性，光聚合的表观速率和膜的荧光发射基本上不受全氟酸的存在的影响。
