Surface modification of polyaniline using tetraethyl orthosilicate

A well-dispersible conducting polyaniline/silica hybrid is prepared by the hydrolysis and condensation of tetraethyl orthosilicate (TEOS) on the surface of polyaniline in water/ethanol solution. It provides a simple and environmentally sound route for preparing the processable conducting polyaniline/silica hybrid at the nanometre level. The conductivity of polyaniline/silica hybrid is 2.43 S cm−1 at 25 °C, and its powder is easily dispersed in the anhydrous ethanol or aqueous solution without any stabilizer. In addition, the structure, morphology and cyclic voltammorgram of this hybrid are also reported.

Graphical abstractWell-dispersible conducting polyaniline/silica hybrid was synthesized. Its conductivity was 2.43 S cm−1 at 25 °C, and showed good electrochemistry active.Figure optionsDownload full-size imageDownload as PowerPoint slide