| abstract |
The embodiment can provide a polyfluorene-fluorene imine film having appropriate solubility and excellent mechanical properties, the film comprising a polyfluorene formed by polymerization of an aromatic diamine compound, an aromatic dianhydride compound, and a dicarbonyl compound. Amine-amimine polymer, which is a 1cm × 1cm square polyamimine-amimine film with a thickness of 30µm to 100µm, dissolved in 10ml of dimethylacetamide (DMAc) for 5 to 60 minutes And based on a thickness of 50µm, the polyfluorene-fluorene film has a yellow index of 5 or less, a haze of 2% or less, a transmittance of 85% or more, and a 5.0GPa or more Modulus. |