High-efficiency saturated red emission from binuclear cyclo-metalated platinum complex containing 5-(4-octyloxyphenyl)-1,3,4-oxadiazole-2-thiol ancillary ligand in PLEDs  

作　　者：YU JunTing WU XiuGang TAN Hua LIU Yu WANG YaFei ZHU MeiXiang ZHU WeiGuo 

机构地区：[1]Key laboratory of Environment-Friendly Chemistry and Application,Ministry of Education [2]College of Chemistry,Xiangtan University

出　　处：《Science China Chemistry》2013年第8期1137-1142,共6页中国科学（化学英文版）

基　　金：supported by the National Natural Science Foundation of China(50973093,51273168,21202139);the Innovation Group Hunan Natural Science Foundation(12JJ7002);the Natural Science Foundation of Hunan(12JJ4019,11JJ3061);the Scientific Fundation of Hunan Provincial Education Department(10A119,11CY023,12B123);Postgraduate Science Foundation for Innovation in Hunan Province(CX2012B249)

摘　　要：A novel red-emitting binuclear platinum complex （dfppy）zPtz（C^OXT）z was synthesized and characterized, in which dfppy represents 2-（4＇,6＇-difluorophenyl）pyridinato unit and CsOXT is abbreviated for 5-（4-octyloxyphenyl）-1,3,4-oxadiazole-2-thiol as a bridging ancillary ligand. Its photophysical, electrochemical and electroluminescent characteristics were primarily studied. The made single-emissive-layer （SEL） polymer light-emitting devices using （dfppy）2Ptz（CsOXT）2 as emitter exhibited a satu- rated red emission peaked at 620 nm. The best device performances were obtained in the device at 8 wt% dopant concentration, with a maximum external quantum efficiency of 8.4%, a current efficiency of 4.2 cd/A and brightness of 3228 cd/m~. This work provides an effective approach to obtain high-efficiency red emission through construction of new binuclear platinum complex and its doped SEL devices.A novel red-emitting binuclear platinum complex (dfppy)2Pt2(C8OXT)2 was synthesized and characterized,in which dfppy represents 2-(4',6'-difluorophenyl)pyridinato unit and C8OXT is abbreviated for 5-(4-octyloxyphenyl)-1,3,4-oxadiazole-2-thiol as a bridging ancillary ligand.Its photophysical,electrochemical and electroluminescent characteristics were primarily studied.The made single-emissive-layer (SEL) polymer light-emitting devices using (dfppy)2Pt2(C8OXT)2 as emitter exhibited a saturated red emission peaked at 620nm.The best device performances were obtained in the device at 8wt% dopant concentration,with a maximum external quantum efficiency of 8.4%,a current efficiency of 4.2cd/A and brightness of 3228cd/m2.This work provides an effective approach to obtain high-efficiency red emission through construction of new binuclear platinum complex and its doped SEL devices.

关 键 词：binuclear platinum complexes red emission ELECTROLUMINESCENCE OXADIAZOLE polymer light-emitting devices 

分 类 号：O641.4[理学—物理化学]