Synthesis and characterization of a new conjugated polymer containing cyano substituents for light-emitting diodes

摘要

A new luminescent conjugated polymer (CN-P3PV) containing cyano groups as electron transporting units was synthesized by a Suzuki coupling reaction. CN-P3PV was characterized by H-1 NMR, FT-IR, GPC, DSC, and TGA. The synthesized polymer possessed high thermal stability (T-d = 360 degreesC, T-g = 151 degreesC), high electron affinity, and good thin-film forming ability. Electrical characterization of a double-layer organic LED based on the structure of ITO/CuPc/CN-P3PV/Ca/Ag showed high electron transporting ability and good electroluminescence performance with the emission of bright orange light. [References: 29]