| abstract |
The present invention provides the following compounds of formula I: Wherein R is H or alkyl, and R 1 , R 2 and R 4 are each independently a C 1 -C 20 aliphatic group, a C 3 -C 20 aromatic group or a C 3 -C 20 alicyclic group. R 3 and R 5 are each independently hydrogen, C 1 -C 20 aliphatic group, C 3 -C 20 aromatic group or C 3 -C 20 alicyclic group, and a, b and d are Each is independently an integer of 0 or 1-3. The present invention also provides a polymer derived from the compound of formula I, where the polymer can be a polyester, polyether, polycarbonate, polyester carbonate, polyetherketone, polyethersulfone, or the like. The compounds and polymers of the present invention are used in light emitting devices. [Chemical 1] [Selection] Figure 1 |