Polycyclic Aromatic Hydrocarbons (PAHs) are -conjugated systems consisting of fused aromatic rings that find many applications in the field of opto-electronics. Their properties are mainly defined by their fusion patterns at the molecular level. For example, linearly fused systems display high charge carrier mobility and thus have been widely used as p-semiconductors in Organic Field-Effect Transistors (OFETs). When the rings are angularly arranged, the compounds displays a helical framework which is configurationally stable depending on the number of ortho-fused rings and their substituents. Such compounds, called helicenes (for example [6]helicene A, Fig. ) show excellent chiroptical properties due to the inherent chirality of the -framework: e. g. optical rotation, circular dichroism and circularly polarized luminescence (CPL) with luminescence dissymmetry factor (glum) values up to 10 -2 for substituted [6]helicenes. As an example of applications, [6]helicenes were used to design circularly polarized organic light-emitting diodes (CP-OLEDs). An elegant alternative strategy for designing CP-emitters is to prepare a chirally perturbated fluorophore. In such a derivative, a chiral centre is located in the vicinity of an achiral emitter, inducing its chiroptical properties. BINOL substituted-BODIPY B (Fig. ) is a representative example of this emerging class of CP-emitters that also found application in OLEDs.