Manjunatha, M.G.Vasudeva Adhikari, A.V.Hegde, P.K.2026-02-052009European Polymer Journal, 2009, 45, 3, pp. 763-771143057https://doi.org/10.1016/j.eurpolymj.2008.12.004https://idr.nitk.ac.in/handle/123456789/27658A new series of donor-acceptor type poly(thiophene) derivatives (P1-P3) were synthesized starting from thiodiglycolic acid and diethyl oxalate through multistep reactions. In the final step, the polymerization was carried out using Wittig reaction. This is a good synthetic route for the preparation of any desired p- and n-type copolymers. The optical and potential charge-transporting properties of the copolymers were investigated by UV-vis, fluorescence emission spectroscopy and cyclic voltammetry. The copolymers exhibited bluish-green/green fluorescence in their thin film forms. Cyclic voltammetry experiments showed that these copolymers have low-lying LUMO energy levels ranging from -2.98 to -3.11 eV and high lying HOMO energy levels ranging from -5.45 to -5.65 eV. The optical and electrochemical studies reveal that new copolymers are new promising materials for the development of efficient polymer light emitting diodes. © 2008 Elsevier Ltd. All rights reserved.Atomic spectroscopyChemical reactionsCopolymerizationCopolymersCurrent densityDiodesElectron energy levelsEmission spectroscopyFluorescenceLight emissionLight emitting diodesMolecular spectroscopyOptical emission spectroscopyOrganic polymersPlastic productsPolymersQuenchingRange findingSulfur compoundsSynthesis (chemical)ThiopheneVoltammetry1,3,4-Oxadiazole3,4-DialkoxythiopheneConjugated copolymersPolymer light-emitting diodesWittig reactionCyclic voltammetry