Theoretical Study for the Preparation of Sub-Carbon Nano Tubes from the Cyclic Polymerization of Three Molecules from (Corannulene, Coronene and Circulene) Aromatic Compounds

Abstract

Corannulene, coronene and circulene are polycyclic aromatic hydrocarbons (PAHs) compounds were chosen to study the preparation of carbon tubes with diameters smaller fraction of nano-meter theoretically may achievable using the density function theory (DFT). The results showed that the stability of the molecules are; corannulene molecule is bowl-shaped, coronene molecule is planar, circulene molecule has a unique saddle-shaped structure. Upon to molecular polymerization a tube for three of the molecules selected results a sub-nanotubes formation. The results showed thermodynamic all preparations reactions are spontaneous and exothermic; the tubes prepared have high efficiency in the gap energy, making it potentially useful for solar cell applications