Electrostatic Layer-by-Layer Self-Assembly for Tuning Hydrophilic ITO glass to Wenzel Super Hydrophobic Surface

Abstract

Layer-by-Layer self assembly concept was designed for the construction of films from electrostatic polymers, we have f abricated nano hybrid organic/inorganic surfaces by alternating various different layers of electrostatic polymers and silica nano particles (10nm diameter). The obtained molecular structure leads to a nanoscale textures. Then hydrophobization of the final la yer by Azobenzene and OTMS-functionalized silica particles was carried out by grafting technique highly fluorinated azobenzen e, creating a monolayer with the formation of an azo function. The fluorinated surfaces (contact angle-133.7 0) and OTMS-SAM (contact angle-124 0) was shown a wenzel model super hydrophobic surfaces were obtained with the alternate of nine layers. This result demonstrates the possibility to construct LBL of polymers with functionalized silica nanoparticles for superhydrophbic sur face on ITO glass surface.