Summary
Conducting-polymer nanofibres are of interest for flexible electronics and sensing, but polyaniline (PANI) is difficult to electrospin on its own and its films tend to be brittle. This work uses coaxial electrospinning to build core–shell fibres in which the electrically active phase is protected inside an insulating, mechanically robust sheath. The core solution combines PANI with graphene functionalised by 1-pyrenebutanoic acid succinimidyl ester (G-PBASE), while poly(methyl methacrylate) (PMMA) forms the shell. Feeding the two solutions through a coaxial spinneret yields continuous PANI/G-PBASE core / PMMA shell nanofibres, and the study characterises their morphology, structure and electrical behaviour — showing that pairing a conductive graphene-loaded PANI core with a spinnable PMMA shell is an effective route to processable conducting nanofibres.