BLENDS OF POLYNORBORNENYL POLYMERS COMPRISING HOLE TRANSPORTING SIDE GROUPS AND POLYNORBORNENYL POLYMERS COMPRISING ELECTRON TRANSPORTING SIDE GROUPS, AS HOST MATERIALS FOR OLEDS

摘要

The various inventions and/or their embodiments disclosed herein relate to the inventions described herein relate to compositions comprising a blend of a. at least one first norbornenyl polymer or copolymer comprising one or more norbornenyl subunits in the polymer backbone linked to at least one optionally substituted arylamine hole transporting side group, and b. at least one additional norbornenyl polymer or copolymer comprising one or more norbornenyl subunits in the polymer backbone linked to at least one optionally substituted electron transporting side group. The blend compositions are useful as host materials for luminescent guests, which are capable of carrying holes, electrons, and excitons into contact with the luminescent guests, for making the emissive layers of electronic devices such as organic light emitting diodes (OLEDs).