Tuning the emission color of conjugated polymers via oxidation copolymerization of fluorene and 3,4-ethylenedioxythiophene

In this paper, 3,4-ethylenedioxythiophene (EDOT)units are introduced to polyfluorene via chemical oxidation polymerization. FTIR and H-1 NMR spectra results confirm that the products are copolymers. Elemental analysis results show that the EDOT content in obtained copolymers increases as the feed ratio of EDOT/fluorene increases. UV-vis and PL spectra results show that the wavelengths of absorption peaks and emission peaks present obviously red-shift with the increase of EDOT content (Figure 2). In addition, the emission colors of resulting copolymers could be tailored between blue and green via changing the feed ratio of 9,9'-dibutylfluorene (DBF)/EDOT.