Generation of multiwalled carbon nanotubes from iron-phthalocyanine polymer and their novel dielectric properties

► Large-scale production of high dielectric multiwalled carbon nanotubes using iron-phthalocyanine polymer as only carbon source at ambient pressure in nitro atmosphere under 800 °C have been reported here. ► Well-ordered mesostructured carbons with graphitic framework walls were conveniently obtained by continuing heating the carbon tubes to 1000 °C.