| 초록 |
Fluorene-containing spiro-type conjugated polymers were synthesized via the cyclopolymerization of dipropargylfluorenes (2-substituted, X= H, Br, Ac, NO2) with various transition metal catalysts. The polymerization of dipropargylfluorenes proceeded well by Mo-based catalysts to give a high yield of polymers. The polymer structure of poly(dipropargylfluorene)s was characterized by such instrumental methods as NMR (1H-, 13C-), IR, UV-visible spectroscopies, and elemental analysis to have the conjugated polymer backbone bearing fluorene moieties. The 13C-NMR spectral data on the quaternary carbon atoms in polymers indicated that the present conjugated cyclopolymers have the six-membered rings majorly. The resulting poly(dipropargylfluorene) derivatives were mostly brown or black powders, depending on the polymerization conditions. The poly(dipropargylfluorene) derivatives were thermally more stable than poly(dipropargylfluorene) itself, and X-ray diffraction analyses revealed that the present polymers are mostly amorphous. |
