DFT calculations on conjugated organic molecules based on thienothiophene for electronic applications

Abstract

We report theoretical studies on the optoelectronic structural properties of five thienothiophene (T) conjugated π conjugates. The geometries, the prediction of the optoelectronic structural properties of the five compounds are studied by calculations of functional density theory (DFT). The absorption properties (λmax, Etr, f) of molecules are gained by the (DFT) B3LYP / 6-31G (d) ZINDO method, so that the most occupied molecular orbitals (HOMO), the least molecular orbitals occupied (LUMO), the energy deficit being calculated using the factor Gaussian 09 and its GaussView 5.0.8 graphical interface.