Synthesis, characterization, and protonation of poly(2- N,N-dimethylamino-4,6-bis(2-furan)-pyrimidine).

A new monomer (2- N,N-dimethylamino-4,6-bis(2-furan)-pyrimidine) was synthesized and its homopolymer was successfully prepared by using ferric trichloride as an oxidant. The structure of monomer and polymer were fully characterized by ¹H-NMR, FT-IR, UV, fluorescent spectroscopy, and X-ray diffraction. The N,N-dimethylformamide solution of the polymer showed a UV-Vis peak at 387 nm and the PL spectrum gave a peak at 517 nm. We have observed that the polymer was sensitive to inorganic acids and the protonation behavior was investigated applying inorganic acids such as HCI and H₂SO₄. The corresponding UV-Vis peaks were observed at 464 and 357 nm, respectively. X-ray diffraction data shows that polymer had a certain crystalline region. The polymer exhibited an [ η] value of 0.21 d l/g at 25 °C in H₂SO₄ (w=98 %). [ABSTRACT FROM AUTHOR]