| 초록 |
Our lab has ever synthesized a new photoalignment material CMPI by substitute the aromatic polyimide with chloromethyl side group, which shows good photosensitivity and thermal property, and CMPI is also a good candidate material for the modification of polyimides. As the further work, we synthesized a new series of polyimides with different length of alkyl side chain by substitute a small part of the chloromethyl side group with the different alkyl acid. At the same time, we also synthesized polyimides with the same alkyl acid for different contents. 1H-NMR and FT-IR confirmed the chemical structures of the resulting polymers and TGA and DSC characterized the thermal property. All the resulting polymers showed good photosensitivy after LPUV irridiation. The impacts to the pretilt angle and other properties by the different alkyl chain length and different alkyl content were investigated. |
