L. Zhang, Y. Long, Z. Chen and M. Wan
Polyaniline nanotubes have been synthesized through a self-assembly process in the presence of various carboxylic acids such as propionic acid, lactic acid, succinic acid, malic acid, tartaric acid, and citric acid. It is shown that the size, aggregated morphology (e.g. dendrites; see Figure), and thermal and electrical properties of the nanotubes are affected by the number of OH and COOH groups of the carboxylic acids.