Effect of methyl substituents on the electrical conductivity and computed molecular properties of chlorine-doped polyaniline
Abstract
The HOMO-LUMO energy gap and bandwidth of HCl-doped polyaniline (PAni) and four methyl-substituted derivatives were computed and correlated with their electrical conductivity values. The PAni derivatives were poly(2-toluidine), poly(3-toluidine), poly(2,3-xylidine) and poly(2,5-xylidine). The computed α HOMO-LUMO energy gap for HCl-doped PAni and four methyl derivatives was found to correlate with electrical conductivity (linear regression coefficiect r = 0.77).