冠醚和卟啉与花生酸混合单分子膜行为研究

本文将3'-正十五烷基苯并15-冠-5和六种无脂链难于直接成膜的四苯基卟啉与花生酸混合形成单分子膜。结果表明, 冠醚被嵌进而卟啉被挤出花生酸单分子层。卟啉-花生镉LB膜的可见吸收光谱指出卟啉分子成团聚集。扫描电镜观察了卟啉-花生酸镉混合LB膜的表面形貌, 在膜表面上无金涂层时直接测到了混合膜的相分离。

Mixed monomolecular film behavior of crown ether and porphyrins with arachidic acid

In this paper, the mixed monomol. films of arachidic acid with 3'-pentadecylbenzo-15-crown-5 and six lipid-free tetraphenylporphyrins which are difficult to form insoluble monolayers alone are studied. The results show that the crown ether is embedded in and porphyrins are squeezed out of the arachidic acid monolayers. The visible absorption spectra of all porphyrin-cadmium arachidate Langmuir Blodgett (LB) films indicate that there are some degree of agglomeration between porphyrin mols. By means of scanning electron microscope, the morphol. structure of porphyrin-cadmium arachidate LB film is observed, and phase separation in mixed monolayers can be monitored without Au coating.