| abstract |
There is provided an a host material and a dopant material, wherein the host material is a compound having one of Formulae I-VI: n n n n n n n n n n In the formulae, R 1 is the same or different at each occurrence and represents an optional substituent which may be present at any or all of the available sites and may be D, alkyl, aryl, alkoxy, aryloxy, oxyalkyl, alkenyl, silyl, or siloxane; Ar 1 , Ar 2 , and Ar 3 are the same or different at each occurrence and are aryl groups; a is an integer from 2-6; and b is an integer from 1-3. |