Direct electrosynthesis and characterization of a new soluble polyfluorene derivative containing carboxyl group in boron trifluoride diethyl etherate

The UV-vis spectrum of dedoped PFAA film is broader with an obvious absorption at 350 nm. Fluorescence spectra of dedoped PFAA indicate the high photochemical stability. The excitation spectrum of PFAA locates at 300-400 nm and the emission spectrum mainly locates at 460 nm. These results indicate that PFAA is a good blue-light emitter.