Fluorinated polyhedral oligomeric silsesquioxanes end-capped poly (ethylene oxide) giant surfactants: precise synthesis and interfacial behaviors

摘要

Interfacial behavior of giant surfactants with precisely tethered molecular nanoparticles (MNPs) is an important topic. In this article, by the combination of hydrosilylation, esterification, and CuAAC "click" chemistry, poly (ethylene oxide) (PEO) chains were end-capped with particle-like aryl-trifluomvinyl ether functionalized polyhedral oligomeric silsesquioxane (FVPOSS) to construct "one-head one-tail" and "bola-form" giant surfactants. The giant surfactants are spread at air/water interface, and surface pressure-area (pi-A) isotherms reveal their interfacial behaviors under compression. Atomic force microscope (AFM) images indicate that the giant surfactants show fractal growth behavior after transferred to the silicon substrate at different surface pressure through the procedure of Langmuir-Blodgett (LB) film deposition. The results are useful for understanding the assembly of giant surfactants at the interface and developing of nanostructured functional materials.