Two novel phase transition materials based on 1-isopropyl-1,4-diazabicyclo[2.2.2]octan-1-ium

Two novel phase transition materials were synthesized based on 1-isopropyl-1,4-diazabicyclo[2.2.2]octan-1-ium. Differential scanning calorimetry (DSC) measurements detected that two compounds underwent a reversible phase transition, which were also confirmed by dielectric measurements. The formation of hydrogen bonds, along with the distortion of DABCO rings may drive the phase transition.