The quantum mechanical calculations have been utilized using the density function theory (DFT) by B3LYP method on the basis set 6-31g(d,p) to calculate the single point energy of Polyaniline emeraldine nitrate salt (PANI-nitrate). Polyaniline emeraldine sulphate (PANI-Sulphate) was also calculated on the same level. At the end the PANI-nitrate@Ag core-shell was calculated on the same level of calc...