Bayindir M., Yildirim A., Budunoglu H., Yaman M., Deniz H., Guler M.O.
Bilkent University, TR
Keywords: aerogel, antireflection, flexible substrate, hydrophobic, Ormosil coating
Organically modified silica (ormosil) nano-composites are unique materials that offer best of the both of organic polymers and inorganics, like mechanical flexibility together with good chemical durability [1]. Nano-porosity adds these hybrid materials extra-functionality (e.g., high surface area and adsorption capacity, very low refractive index and low dielectric constant), however, at the expense of limiting the choice of substrate, due to higher processing temperatures. Our novel preparation method of nano-porous organically modified silica (ormosil) thin films is based on a room-temperature sol-gel technique which enables preparation of these films on almost any substrate including heat sensitive plastic and paper substrates [2-4]. The facile template-free synthesis of nano-structured ormosil colloidal suspensions, starting from a single organosilane monomer, are deposited as homogeneous thin films with good thickness (90-1000 nm) and porosity (30-86%) control. These suspensions offer easy handling and good reproducibility for large-area fabrication of homogenous nanoporous and flexible thin films.
Journal: TechConnect Briefs
Volume: 1, Nanotechnology 2011: Advanced Materials, CNTs, Particles, Films and Composites
Published: June 13, 2011
Pages: 379 - 382
Industry sector: Advanced Materials & Manufacturing
Topics: Advanced Materials for Engineering Applications, Coatings, Surfaces & Membranes
ISBN: 978-1-4398-7142-3