New perfluoroalkylated telomeric surfactants derived from tris(hydroxymethyl)aminomethane were synthesized in two steps and 50% overall yield. These surfactants display significantly better surface activity and enhanced capacity to emulsify fluorocarbons compared to Pluronic F-68(R). Preliminary in vitro and in vivo evaluation (cell cultures, hemolysis, LD50 i.v. in mice) indicates that this type of compounds is remarkably non-toxic, and could find applications in preparations for biomedical uses including injectable fluorocarbon emulsions.