Organic single-component ferroelectrics with low molecular mass have drawn great attention for applications in organic electronics. However, the discovery of high-Tc single-component organic ferroelectrics has been very scarce. Herein, we report a pair of homochiral single-component organic ferroelectrics (R)-10-camphorsulfonylimine and (S)-10camphorsulfonylimine under the guidance of ferroelectric chiral chemistry. They crystallize in chiral-polar space group P21, and their mirror image relations have been identified by vibrational circular dichroism spectra. They both exhibit 422F2 multiaxial ferroelectricity with Tc as high as 429 K. Besides, they possess superior acoustic impedance characteristic with the value of 2.45×106 kg·s-1·m^-2, lower than that of PVDF. To our knowledge, enantiomeric (R and S)-10-camphorsulfonylimine show the highest Tc among the known organic single-component ferroelectrics and the low acoustic impedance well matching with the bodily tissues. This work promotes the development of high-performance organic single-component ferroelectrics and is of great inspiration to explore the applications in next-generation flexible smart devices. This work was recently published in Chemical Science, 2021. (DOI: 10.1039/D1SC04322F)

Read more: https://doi.org/10.1039/D1SC04322F