AbstractHybrid organic‐inorganic coatings and free‐standing films made from [3‐(glycidyloxy)propyl]trimethoxysilane, amino‐terminated poly(oxypropylene) (Jeffamine D‐230), colloidal polyaniline nanoparticles and, in some cases, colloidal nanosilica were prepared and characterized. HCl or 4‐methylbenzene‐1‐sulfonic acid were used as catalysts for the sol‐gel process and pH tuning, water‐propan‐2‐ol mixture as a solvent. Electrical and mechanical properties and surface morphology of films were studied. The coatings were blue and non‐conducting, or green and conducting, depending on preparation conditions. They have a smoother surface than in‐situ polymerized polyaniline films.