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

Abstract

Abstract 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.