Fig. 2: Chiroptical properties of chiral nanomaterials.

a The relationship between unpolarized light, linearly polarized light and circularly polarized light. Reproduced with permission from ref. 111. Copyright 2020, WILEY-VCH. b Schematic illustration of circular dichroism (CD). c Typically cotton effect (left and middle) and bisignate CD spectra (right) in chiral nanomaterials. d Schematic illustration of circularly polarized luminescence (CPL)