“…When a polysilsesquioxane solution is coated on a substrate and then cured, a cross-linked gel film is formed. By taking advantage of their excellent mechanical and thermal stability and transparency, polysilsesquioxanes have been applied as a scratch-resistant coating, , barrier coating, , optical film, , and low dielectric film. − Additionally, owing to their thermal stability and nonflammable property, the cross-linked gel film of polysilsesquioxanes may be utilized as thermal barrier coating under high-temperature conditions. Polysilsesquioxane also exhibits good processability for coating, which could be exploited for the fabrication of thermal barrier coating on various substrates and materials by spin coating, dip coating, or spray coating.…”