Hybrid Chiral MoS Layers for Spin-Polarized Charge Transport and Spin-Dependent Electrocatalytic Applications.

The chiral-induced spin selectivity effect enables the application of chiral organic materials for spintronics and spin-dependent electrochemical applications. It is demonstrated on various chiral monolayers, in which their conversion efficiency is limited. On the other hand, relatively high spin polarization (SP) is observed on bulk chiral materials; however, their poor electronic conductivities limit their application. Here, the design of chiral MoS with a high SP and high conductivity is reported. Chirality is introduced to the MoS layers through the intercalation of methylbenzylamine molecules. This design approach activates multiple tunneling channels in the chiral layers, which results in an SP as high as 75%. Furthermore, the spin selectivity suppresses the production of H O by-product and promotes the formation of ground state O molecules during the oxygen evolution reaction. These potentially improve the catalytic activity of chiral MoS . The synergistic effect is demonstrated as an interplay of the high SP and the high catalytic activity of the MoS layer on the performance of the chiral MoS for spin-dependent electrocatalysis. This novel approach employed here paves way for the development of other novel chiral systems for spintronics and spin-dependent electrochemical applications.