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Long perfluoroalkyl chains are not required for dynamically oleophobic surfaces†
Joonsik Park,Chihiro Urata,Benjamin Masheder,Dalton F. Cheng,Atsushi Hozumi
Green Chemistry Pub Date : 11/12/2012 00:00:00 , DOI:10.1039/C2GC36415H
Abstract

Dynamically oleophobic surfaces for alkane liquids, such as n-decane, n-dodecane and n-hexadecane, were successfully prepared using a simple sol–gel mixture containing 3,3,3-trifluoropropyltrimethoxysilane (FAS3) and tetramethoxysilane (TMOS). Due to the enhancement of the motion of functional groups by addition of TMOS as a molecular spacer, small volume alkane droplets (3 μL) could be easily set in motion to move across and off our hybrid surfaces without pinning at low tilt angles (∼10°), and without relying on conventional surface roughening and long-chain perfluoroalkylsilanes.

Graphical abstract: Long perfluoroalkyl chains are not required for dynamically oleophobic surfaces
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