Chemical design of homochiral heterocyclic organic ferroelectric crystals

Abstract

Single component organic ferroelectrics of spirooxazacamphorsultam derivatives, 1-SSR and 1-RRS, exhibit well-defined ferroelectricity (P_s = 2.2 μC cm⁻²) and piezoelectricity (d₃₃ = 10 pC N⁻¹) below their melting point. More importantly, they possess a low acoustic impedance value of 2.7 × 10⁶ kg s⁻¹ m⁻², which is well-matched with body tissues.