| 초록 |
A new family of mono- and di-substituted polyacetylenes that retain extensive conjugation was prepared through the activated polymerization of ethynylpyridines with alkyl halides. Here, an ionic polyacetylene was prepared by the non-catalyst polymerization of 2-ethynylpyridine with 2-(bromomethyl)-5-nitrofuran without any additional initiator or catalyst. The polymer structure was characterized by various instrumental methods to have a polyacetylene backbone structure with the designed furan moieties. The polymer was completely soluble in such polar organic solvents as dimethylformamide, dimethyl sulfoxide, and N,N-dimethylacetamide. The inherent viscosities of the resulting polymer were in the range 0.12–0.19 dL/g, and X-ray diffraction analysis data indicated that this polymer was mostly amorphous. The polymer exhibited irreversible electrochemical behaviors between the doping and undoping peaks. The photoluminescence peak was observed at 593 nm; this corresponded to a photon energy of 2.09 eV. |
