| 초록 |
Recently, polyimides are applied to novel devices such as gate dielectric layers in organic field-effect transistors. However, fabrication of this device requires curing temperature much lower than 300 °C. There are several approaches to solve the problem including the introduction of soluble polyimides such as fully aliphatic polyimides or partial aliphatic polyimides. However introduction of aliphatic monomers have such problems like low thermal and mechanical stability and chemical resistance. The object of this study is to develop soluble partially aliphatic polyimides having the desirable properties. We have synthesized partially aliphatic polyimides containing anthracene moiety that was used for cross-linking reaction with bismaleimide crosslinkers in solution or solid state. The cross-linking between polyimide chains was confirmed by 1H-NMR, and thermal and mechanical properties of cross-linked polyimides was investigated by TGA, DSC and UTM. |
