Zero‐Dimensional Sn‐Based Enantiomeric Phase‐Transition Materials with High‐Tc and Dielectric Switching

Abstract

AbstractThe combination of chirality and phase‐transition materials has broad application prospects. Therefore, based on the quasi‐spherical theory and the thought strategy of introducing chirality, we have successfully synthesized a pair of chiral enantiomeric ligands (R/S)‐triethyl‐(2‐hydroxypropyl)ammonium iodide, which can be combined with a tin hexachloride anion to obtain a pair of new organic–inorganic hybrid enantiomeric high‐temperature plastic phase‐transition materials: (R/S)‐[CH3CH(OH)CH2N(CH2CH3)3]2SnCl6 (1‐R/1‐S), which have a high temperature phase transition of Tc=384 K, crystallize in the P21 chiral space group at room temperature, and have obvious CD signals. In addition, compounds 1‐R and 1‐S have a good low‐loss dielectric switch and broadband gap. This work is conducive to the research into chiral high‐temperature reversible plastic phase‐transition materials, and promotes the development of multi‐functional phase‐transition materials.