A series of soluble and autophotosensitive hyperbranched polyimides were successfully prepared. The hyperbranched polymer (HBPI) films showed excellent solubility, low dielectric constant and a minimum birefringence value as low as 0.0026 at 650 nm. In addition, HBPI-1 and 3, exhibited excellent optical properties and good photolithographic properties, may be considered as promising processable high-temperature materials for applications in microelectronic and optical devices.
- Changwei Liu
- Daming Wang
- Xiaogang Zhao
