Design and Synthesis of New Fluorene-Based Blue Light Emitting Polymer Containing Electron Donating Alkoxy Groups and Electron Withdrawing Oxadiazole

摘要

A new polyfluorene-based copolymer having 2-ethylhexyloxy-5-methoxy-l,4-phenylene as an electron donating group and 2,5-diphenyl-oxadiazole as an electron withdrawing group was synthesized by the Suzuki coupling reaction.The obtained copolymer was characterized by ~1H-NMR,~(13)G-NMR,and IR-spectroscopy.The weight average molecular weight(M_w)of the obtained polymer was 18,600 with a polydispersity index of 1.5.The maximum photoluminescence of the solution and film of the polymer was observed at 453 nm and 456 nm,respectively.A double-layer device with the configuration,ITO/PEDOT/copolymer/Al,emitted blue light at 460 nm.