| abstract |
Asymmetric mesogens for use in an OLED device, wherein the asymmetric mesogen has the structure (I): E1-(B1)n-A-B2-E2 (I) wherein: (B1)n-A-B2 is a chromophore that comprises a conjugated pi-system, A, B1 and B2 each independently comprise an optionally substituted aromatic ring system; E1 and E2 are end groups which terminate the conjugated pi-system of the chromophore; n is 0 or 1; and wherein the asymmetric mesogen does not possess a C2 symmetry axis. Also shown is an OLED device comprising the asymmetric mesogen and a method of manufacturing an OLED. |