Homochiral Chemistry Strategy to Trigger Second-Harmonic Generation and Dual Dielectric Switches.

Switchable materials have attracted enormous interest due to their promising applications in important fields such as sensing, electronic components, and information storage. Nevertheless, obtaining multifunctional switching materials is still a problem worth investigating. Herein, by incorporating ( Rac -, L -, D -2-amino-1-propanol) as the templating cation, we have obtained ( Rac -, L -, D -HTMPA)CdCl 3 (HTMPA = 1-hydroxy- N , N , N -trimethyl-2-propanaminium). We have adopted a chiral chemistry strategy that causes ( Rac -HTMPA)CdCl 3 in the central symmetric space to crystallize in the chiral space group. Based on the modulation of the homochiral strategy, ( L- , D- HTMPA)CdCl 3 shows a dual phasic transition at 269 and 326 K and a switchable second-harmonic generation response. In addition, ( L -, D -HTMPA)CdCl 3 is chiral switchable material to exhibit stable dual dielectric and second-harmonic generation (SHG) switches. This work provides an approach to exploring multifunctional chiral switchable materials.