A simple and green ionic liquid-mediated approach for the synthesis of novel highperformance and thermally stable polyimides

Aromatic polyimides (PI)s, because of their many desirable physicochemical and mechanical characteristics such as high thermal stability, excellent mechanical properties, low dielectric constant, wear resistance, and surface inertness and dissipation factor, have been used extensively in dielectric andelectrical insulation materials in microelectronic, aircraft, and space applications as structural and substructural materials [1].Ionic liquids (IL)s are designer molecules which can efficiently replace the conventional organic solvents used in chemical processes and operations and have attracted muchattention from polymer chemists in various fields because of their unique physical and chemical properties, such as nonflammability, negligible volatility, high ionic conductivity, and thermal stability [2].