Luminescent properties of coumarin-doped MEH-PPV and novel coumarin-terminated MEH-PPV

作者：Huang Y^*; Lu ZY; Peng Q; Jiang Q; Xie RG; Han SH; Dong LG; Peng JB; Cao Y; Xie MG

来源：Materials Chemistry and Physics, 2005, 93(1): 95-99.

DOI：10.1016/j.matchemphys.2005.02.027

• luminescence
• poly-p-phenylenevinylene
• coumarin
• end-capping
• light-emitting diode

A series of novel coumarin-terminated poly (2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylene vinylene (CT-MEH-PPV) were synthesized successfully via Gilch methodology. Luminescent properties of CT-MEH-PPV were compared with those of blend systems. A light-emitting diode based on a double-layer structure (ITO/PEDOT/CT-MEH-PPV2/Ba/Al) has shown yellow emission with a maximum brightness of 956 cd m(-2) at 8.8 V and an external quantum efficiency of 0.28% at 49.5 mA cm(-2). These results suggest that modification of structures of conjugated polymers with end-cappers is a convenient way to tune the emission color and to improve photoluminescent and electroluminescent efficiencies.

• 出版日期2005-9-15
• 单位华南理工大学; 内江师范学院; 四川大学