Fluorosurfactant
From Soft-Matter
Fluorosurfactants, or fluorinated surfactants, are synthetic organofluorine chemical compounds that have multiple fluorine atoms. They can be polyfluorinated or fluorocarbon-based (perfluorinated). As surfactants, they are more effective at lowering the surface tension of water than comparable hydrocarbon surfactants. They have a fluorinated "tail" and a hydrophilic "head." Some fluorosurfactants, such as PFOS, are detected in humans and wildlife.
Reference
1.[1]http://en.wikipedia.org/wiki/Fluorosurfactant
Keyword in references:
Biocompatible surfactants for water-in-fluorocarbon emulsions