| 초록 |
Poly(p-phenylene vinylene) (PPV) is a family of conjugated polymers that have been used in a variety of fields, including light-emitting diodes, photovoltaic cells. Many efforts have been devoted to fabricate patterned PPV images on solid substrates. Polydiacetylenes (PDAs) are optically and structurally unique conjugated polymers. PDA shows a color transition and exhibits self-fluorescence when exposed to external stimuli. In addition, the solubility of PDA in common organic solvents is drastically decreased after polymerization. We hypothesized that, if a thin film of PPV containing DA moieties (PPV-DA) is UV-irradiated with a photomask, photoinduced PDA formation should occur in the UV-exposed area. Subsequent development of the film in an organic solvent should remove any organic solvent-soluble (UV-unirradiated) part, leaving patterned PPV images behind. By employing this strategy, we were able to fabricate patterned PPV images using a diacetylene containing PPV derivative. |
