Synthesis and Characterization of Poly（N-Hexyl-2, 7-di（2-（4-hexylthiophene）carbazole）

One conjugated polymer consisting of carbazole and 3-hexylthiophene moiety, poly（N-Hexyl-2,7-di（2-（4-hexylthiophene）carbazole）（PNDC）, has been synthesized by ferric chloride oxidative polymerization. The monomer N-Hexyl-2,7-di（2-（4-hexylthiophene）carbazole was synthesized and characterized by IR, 1H-NMR, 13C-NMR and MS. UV-vis absorption spectrum, fluorescence spectrum, photoluminescence spectrum and electrochemical properties of the polymer were investigated. Polymer PNDC shows maximum peak appearing at 394 nm in UV-vis absorption spectrum, strongest fluorescence-emission at 482 nm in fluorescence spectrum and maximum emission peak at 492 nm in photoluminescence spectrum. The band-gap（Eg）, HOMO energy（EHOMO）, and LUMO energy（ELUMO） of the polymer were obtained as 2.58,-5.32, and-2.74 e V, respectively.