Manufacturing Nanoparticles with Orthogonally Adjustable Dispersibility in Hydrocarbons, Fluorocarbons, and Water.

ABSTRACT: We describe a universal wet-chemical shell-by-shell coating procedure resulting in colloidal titanium dioxide (TiO₂) and iron oxide (Fe₃O₄) nanoparticles with dynamically and reversibly tunable surface energies. A strong covalent surface functionalization is accomplished by using long-chained alkyl-, triethylenglycol-, and perfluoroalkylphosphonic acids, yielding highly stabilized core-shell nanoparticles with hydrophobic, hydrophilic, or superhydrophobic/fluorophilic surface characteristics. This covalent functionalization sequence is extended towards a second noncovalent attachment of tailor-made nonionic amphiphilic molecules to the pristine coated core-shell nanoparticles via solvophobic (i.e. either hydrophobic, lipophobic, or fluorophobic) interaction

SUBMITTER: Zeininger L 

PROVIDER: S-EPMC5891662 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature