Anti-fingerprint properties of non-fluorinated organosiloxane self-assembled monolayer-coated glass surfaces

Self-assembled monolayers of organosiloxanes and their hybrids with different functionalities were successfully fabricated on glass surfaces by sol-gel technique. Contact angles with water and hexadecane revealed that the examined organosiloxanes can be classified into hydrophobic/oleophilic and hydrophobic/oleophobic molecules, and the latter character can be called amphiphobic. Since contact angles of amphiphobic oleic acid, a main component of finger print, is high for amphiphobic organosiloxanes, it can be revealed that anti-fingerprint property is strictly involved in amphiphobicity and evaluated by contact angle of oleic acid. Moderately amphiphobic non-fluorinated trimethoxymethylsilane and its hybrid with oleophilic octadecyltrimethoxysilane possessed anti-fingerprint property comparable to fluorinated compounds. In these cases, the roughness of glass surfaces may not necessarily influence in the anti-fingerprint property. (C) 2014 Elsevier B.V. All rights reserved.