Self-Assembled Fluorinated Organogelators for Surface Modification

Abstract

A new class of alkyl- and perfluoroalkyl-containing urea and amide derivatives was synthesized from amino acid derivatives. Most of these compounds showed excellent gelation behavior in organic solvents at low concentrations. A few organogelators selected from the initial screening were used for surface modification of fibrous substrates to create hydrophobic and oleophobic composites. The hydrophobic and oleophobic behaviors of these composites were ascribed to a combination of increased surface roughness and the alkyl/fluorinated functionalities present in the gelator backbone.

Keywords

• organogelator
• gelation
• perfluoroalkyl
• urea
• amide
• amino acid
• xerogel
• nonwoven
• hydrophobic
• oleophobic
• contact angle
• surface modification