Enhancing switchable dielectric property for crystalline supramolecular rotor compounds by adding polar components

Abstract

Two new compounds were obtained by assembling the [(2-methoxy-5-nitro-anilinium)(18-crown-6)]⁺ cation with non-polar PF₆⁻ and polar SO₃CF₃⁻ anions, respectively. Benefiting from its polar anion, the SO₃CF₃⁻ compound reveals a more significant dielectric switching behaviour during phase transition, demonstrating an effective strategy to enhance the dielectric property by adding polar components.