Synthesis and characterization of an ionic conjugated polymer: Poly[2-ethynyl-N-(2-thiophenecarbonyl) pyridinium chloride]
2009
Gal, Yeong-Soon | Jin, Sung-Ho | Park, Jong-Wook | Lim, Kwon Taek
The activated polymerization of 2-ethynylpyridine by using 2-thiophenecarbonyl chloride yielded the corresponding conjugated ionic polymer, poly[2-ethynyl-N-(2-thiophenecarbonyl)pyridinium chloride] (PETCPC). The polymerization proceeded well to give high yield of polymer without any additional initiator or catalyst. The instrumental analysis data on polymer structure indicated that the present ionic polymer have a conjugated polymer backbone system having N-(2-thiophenecarbonyl)pyridinium chloride as substituents. The photoluminescence maximum peak of PETCPC was located at 573 nm, which corresponds to the photon energy of 2.16 eV. The aromatic functional substituents in the conjugated backbone system shift PL maximum values because it makes different molecule arrangement. The cyclovoltamograms of PETCPC exhibited the electrochemically stable window at -1.24 to 1.80 V region. It was found that the kinetics of the redox process of polymer might be controlled by the reactant diffusion process from the experiment of the oxidation current density of polymer versus the scan rate.
显示更多 [+] 显示较少 [-]