The synthesis and examination of spectral properties of some 2,2′-bithienyl derivatives with carbonyl-containing substituents

► The investigation of ten model 2,2′-bithiophene derivatives containing carbonyl pair. ► Three novel 2,2′-bithiophene derivatives have been synthesized and characterized. ► The B3LYP and CIS optimal geometries are discussed. ► The solvent effect on the spectroscopic properties was described.