RETRACTED ARTICLE: Synthesis and characterization of trimeric phosphazene based ionic liquids with tetrafluoroborate anions and their thermal investigations

The quaternized compounds ( PzIL1–9 ) reacted with sodium tetrafluoroborate (NaBF 4 ) to generate phosphazene based ionic liquids (PzILs), PzIL1a–9a . The newly synthesized ionic compounds ( PzIL1a–9a ) were verified using elemental CHN analyses and functional and spectroscopic (FTIR and 1 H, 13 C, 31 P-NMR) analyses techniques. The thermal properties of PzIL1a–9a were investigated using thermogravimetric analysis (TGA). According to the initial decomposition temperature values calculated based on the TGA thermograms, PzIL7a (213 °C) was recognized to be more thermally stable than the other PzILs studied. PzIL1a–9a exhibited good solubility in the water and demonstrate a typical dielectric relaxation behavior, conductivity levels for both low and high-frequency regions. AC conductivity mechanisms and dielectric relaxation behavior of each sample are investigated by fabricating parallel plate capacitors.