Suzuki coupling modified by adding Ag2O instead of the Na2CO3 used in the original reaction protocol, was used as a synthetic tool for the synthesis of a copolymer in which 9,9‐dialkylfluorene moieties were coupled to unsubstituted poly(p‐phenylenevinylene) (PPV) units. The possibility of performing the polymerisations at moderate temperatures appears to be an advantage related to the use of Ag2O. The copolymer shows a Mw of 21 000 and Mw/Mn = 2.1 and is suitable for the construction of electroluminescent devices. Monolayer organic light‐emitting diodes (OLEDs) have been built which emit greenish light.
Synthesis of poly(fluorenevinylene‐co‐phenylenevinylene).
