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Citation: HOU Qiong, LIANG Xiao-Yan, LUO Jie. Synthesis and Electroluminescent Properties of Fluorene-Based Red Emitting Copolymers[J]. Chinese Journal of Applied Chemistry, ;2009, 26(2): 163-167. shu

Synthesis and Electroluminescent Properties of Fluorene-Based Red Emitting Copolymers

HOU Qiong ^a,b,, ,
LIANG Xiao-Yan ^a ,
LUO Jie ^b

1.
a School of Chemistry & Environment, South China Normal University, Guangzhou 510630;
2.
b Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou 510640

Corresponding author: HOU Qiong,
Received Date: 1 December 2007
Available Online: 2 February 2008

Red light emitting conjugated copolymers derived from 9,9-dioctylfluorene(DOF) and 4,7-dithien-2-yl-2,1,3-benzoselenadiazole(BTSe) were synthesized via palladium-catalyzed Suzuki coupling reaction with x(BTSe) ranging from 0.1% to 35%.Polyfluorene fluorescence was quenched completely at BTSe content as low as 0.5% in the solid film.Devices based on these copolymers emitted red light at x(BTSe) from 0.1% to 35% in the copolymer,and the electroluminescent(EL) emission peaks of the devices with the copolymers red-shifted from 669 nm to 727 nm.The highest external quantum efficiency of 1.24% and brightness of 83 cd/m² were obtained for the device from the copolymer with x(BTSe) of 0.1%.
- fluorene,
- dithienyl-benzoselenadiazole,
- light emitting conjugated copolymers,
- energy transfer
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