Fabrication of hierarchical silica films with coexisting microscale cracks and mesopores enabled by chlorine-containing silica particle incorporation

Key Points

• This research aims to create mesoporous silica films that incorporate chlorine-containing silica particles to achieve specific microstructures.
• Utilized chlorine-containing silica particles in the fabrication process.
• Conducted a surfactant reaction followed by a sol-gel reaction with silica precursors.
• Characterized resulting structures for microscale cracks and mesopores.
• The resulting films displayed isotropic mesopores and microscale cracks.
• The micro- and mesostructures are beneficial for enhancing cellular activation.