| abstract |
The present invention relates to the field of organic optoelectronic materials, in particular, to polycyclic aromatic organic compounds, their synthesis process, light-emitting materials and organic electroluminescent devices. The polycyclic aromatic organic matter is the compound represented by the following formula I or II or its isomer, Wherein, A ring, C ring, E ring, F ring, D ring and G ring are respectively independently selected from aromatic ring, heteroaryl ring or aliphatic ring, and have at least one heteroaryl ring; R 1 -R 7 are respectively independently selected from hydrogen, deuterium, cyano, halogen groups, substituted or unsubstituted alkyl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted alkoxy, substituted or unsubstituted Or unsubstituted spirocyclic group, substituted or unsubstituted fused ring group or can be connected with adjacent substituents to form monocyclic or polycyclic aliphatic ring group or aromatic ring group. Polycyclic aromatic organic compounds can emit blue light, which can then be used as blue doping materials, and can improve the efficiency and lifetime of organic electroluminescent devices. |