Abstract
SummaryA new low solvent method of silylation followed by functionalization of oxide surfaces with polyaniline (PANI) was applied to alumina. The method comprises silylating alumina with 3‐(phenylaminopropyl)trimethoxysilane followed by grafting PANI onto the silylised surface by in situ polymerisation of aniline. A novel approach was developed for removal of PANI homopolymer formed as a by‐product was removed using 1(N)‐methyl‐2‐pyrrolidone (NMP)‐aliphatic amine binary solvent, which dedoped the emeraldine salt of PANI in a single, one‐pot procedure and made it soluble in NMP. After re‐doping with methanesulfonic acid the silylated alumina‐PANI hybrid became electrically conductive. The interfacial interactions within the hybrid material were investigated by several analytical techniques namely, elemental analysis, Fourier transform infrared spectroscopy, solid‐state 13C and 29Si nuclear magnetic resonance spectroscopy, X‐ray photoelectron spectroscopy and scanning electron microscopy.
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