Chiral Symmetry Breaking in Gold Stellated Nanoicosahedrons

point group display highly twisted edges with 532 rotational symmetry and remarkably high chiroptical responses. Benefiting from the highly stellated geometry and intrinsic plasmonic characteristics, chiral Au SNIs also exhibit superior single-particle chiroptical and surface-enhanced Raman scattering properties, which hold great significance for applications in sensing and photonics. Our work provides an important knowledge framework that guides the synthesis of chiral materials with increasing architectural diversity toward chirality-dependent applications.