In the light of the helix theory, aromatic annulenes and non-aromatic annulcncs are all the mixture of the mesomer and raceme, so they haven't opticity activeity.
从螺旋理论看,芳香轮烯和非芳香轮烯都是内消旋体和外消旋体的混合物,故都不呈现旋光性。
Such distinctive optical properties as opticity and selective reflection of chiral agent-doped PDLC have widely been applying in the field of light filter, grating, and reflective display, etc.