In this work, we report theoretical analysis on the geometries and optoelectronic properties of eight new small conjugated compounds based on thienylevinylenein a donor–bridge–donor (D-A-D) system with different heterocyclic bridges as acceptor moieties (A) inserted in the middle of the molecule, these compounds were designed and characterized by using density functional theory (DFT) and time-dependent (TD) calculations. The study of the structural and optoelectronic properties (HOMO, LUMO, Gap energy, Voc) is realized by using DFT method at Becke's three-parameter functional and Lee– Yang–Parr functional (B3LYP) level with 6-31G(d) basis set.The calculations were performed by Gaussian 09 program supported by Gauss View 5.0. While the absorption properties are obtained by TD-DFT/B3LYP/6-31G(d) method.The effects of the heterocyclic acceptor bridges on the geometries and optoelectronic properties of these molecules are discussed to investigate the relationship between structure and optoelectronic properties. These properties suggest these materials as good candidates for organic solar cells.