Optical spectroscopy of heterocycles based on pyrrole, furan and thiophene

Recently Joshi et al synthesised a serie of nine triheterocycles based on p irrole, furan and thiophene. All the systems chemically polymerised and oxi dised with NOPF6. The experimental results indicated the presence of polaro ns in three of the systems that cause appreciable electrical conductivity v alues. In this work we present a theoretical spectroscopy study for oligome rs builded with these materials. In our calculations we utilised the semi e mpirical AMI method for the geometric simulation of the oligomers. Optical absorption spectra for neutral and charged systems were done by using ZINDO /S method.