Karmegam, VasanthyUdamulle Gedara, Chinthaka M.Biewer, Michael C.Stefan, Mihaela C.2019-08-302019-08-302018-09-210887-624Xhttps://hdl.handle.net/10735.1/6816Includes supplementary materialFull text access from Treasures at UT Dallas is restricted to current UTD affiliates (use the provided Link to Article).Side chain engineering has been used for tuning the opto-electronic properties of organic semiconductors. In this work, a series of pyrimidine-based donor-acceptor (D-A) conjugated polymers functionalized with electron-withdrawing or electron-donating side chains were synthesized. The opto-electronic properties of the pyrimidine D-A conjugated polymers were investigated focusing on the dependence on the electron withdrawing strength of the acceptor moiety, while maintaining the same donor moiety. Fine-tuning of the energy levels was achieved by introducing electron donating (alkoxy [—OR] and alkylthio [—SR]) or electron withdrawing (alkylsulfinyl [—SOR] and alkylsulfonyl [—SO₂R]) side chains onto the acceptor moiety. The effects of side chain modification have been investigated through DFT calculations, UV–vis analysis, and electrochemical measurements.en©2018 Wiley Periodicals, Inc.Conducting polymersConjugated polymersPolymers—Electric propertiesElectron donor-acceptor complexesElectronsPyrimidinesAromatic compoundsTuning—Electronic equipmentarticleKarmegam, V., C. M. Udamulle Gedara, M. C. Biewer, and M. C. Stefan. 2018. "Synthesis and opto-electronic properties of functionalized pyrimidine-based conjugated polymers." Journal of Polymer Science, Part A: Polymer Chemistry 56(22): 2547-2553, doi:10.1002/pola.292345622