Chirality-Induced Spin Selectivity in Supramolecular Chirally Functionalized Graphene Firouzeh, Seyedamin Illescas Lopez, Sara Hossain, Md. Anik Cuerva Carvajal, Juan Manuel Álvarez de Cienfuegos Rodríguez, Luis Pramanik, Sandipan Chiral graphene hybrid materials have attracted significant attention in recent years due to their various applications in the areas of chiral catalysis, chiral separation and recognition, enantioselective sensing, etc. On the other hand, chiral materials are also known to exhibit chirality-dependent spin transmission, commonly dubbed “chirality induced spin selectivity” or CISS. However, CISS properties of chiral graphene materials are largely unexplored. As such, it is not clear whether graphene is even a promising material for the CISS effect given its weak spin−orbit interaction. Here, we report the CISS effect in chiral graphene sheets, in which a graphene derivative (reduced graphene oxide or rGO) is noncovalently functionalized with chiral Fmoc-FF (Fmocdiphenylalanine) supramolecular fibers. The graphene flakes acquire a “conformational chirality” postfunctionalization, which, combined with other factors, is presumably responsible for the CISS signal. The CISS signal correlates with the supramolecular chirality of the medium, which depends on the thickness of graphene used. Quite interestingly, the noncovalent supramolecular chiral functionalization of conductive materials offers a simple and straightforward methodology to induce chirality and CISS properties in a multitude of easily accessible advanced conductive materials. 2023-09-07T09:52:48Z 2023-09-07T09:52:48Z 2023-09-05 journal article https://hdl.handle.net/10481/84311 10.1021/acsnano.3c06903 eng http://creativecommons.org/licenses/by-nc-nd/3.0/ open access Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License