Synthesis of functional fluorinated polyhedral oligomeric silsesquioxane (“F-POSS”)

A hydrophobic and oleophobic substrate surface comprising:

• a substrate having a surface;
• and
• a hydrophobic and oleophobic layer on the surface of the substrate, the hydrophobic and oleophobic layer comprising an F-POSS with 3,3-dichloro-1,1,1,2,2-pentafluoropropane/1,3-dichloro-1,1,2,2,3-pentafluoropropane onto an inert surface, the F-POSS having a structure:
• where each Rf represents a nonreactive, fluorinated organic group, R1 represents a first monovalent organic group comprising at least two carbon atoms and is selected from the group consisting of —(CH2)7CH3, —(CH2)3OC(O)CH═CH2, and —(CH2)3OC(O)C(CH3)═CH2, and R2 represents hydrogen or a second monovalent organic group comprising at least two carbon atoms.