Synthesis and Characterization of Fluorene Based Electron Transporting Materials for Polymer Light-Emitting Diodes

We synthesized fluorene based alternating copolymers comprised of several electron withdrawing groups via Suzuki coupling polymerization. Physical properties were characterized using the UV-vis spectroscopy, photoluminescence (PL) spectroscopy. The absorption peaks of copolymers were red-shifted compared to that of corresponding fluorene homopolymer.This work was supported by the Korea Science and Engineering Foundation (KOSEF) grant funded by the Korea government (MEST) (Grant No. R11-2007-050-01003-0) and by the Research fund of HYU (HY-2010-HYURS)