Novel fluorene-based light-emitting copolymers containing cyanophenyl pendants and carbazole-triphenylamines: Synthesis, characterization and their PLED application

被引：23
作者：
Lin, Ying [1 ,2 ]
Chen, Zhi-Kuan [1 ]
Ye, Teng-Ling [3 ]
Dai, Yan-Feng [1 ,3 ]
Ma, Dong-Ge [3 ]
Ma, Zhun [1 ]
Liu, Qin-De [1 ]
Chen, Yu [2 ]
机构：
[1] Inst Mat Res & Engn, Singapore 117602, Singapore
[2] E China Univ Chem Technol, Dept Chem, Adv Mat Lab, Shanghai 200237, Peoples R China
[3] Chinese Acad Sci, Grad Sch, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
来源：
POLYMER | 2010年 / 51卷 / 06期
关键词：
Cyanophenyl groups; Carbazole-triphenylamines; Blue light-emitting; Electron-withdrawing; Electron-donating; HIGHLY EFFICIENT; CONJUGATED COPOLYMERS; ELECTRON-MOBILITY; SIDE-CHAIN; POLYFLUORENE; POLYMER; DIODES; GREEN; ELECTROLUMINESCENCE; DERIVATIVES;
D O I：
10.1016/j.polymer.2010.01.024
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A series of novel blue light-emitting copolymers PCC-1, PCC-2, and PCC-3, composed of different ratios of electron-withdrawing segments (spirobifluorene substituted with cyanophenyl groups) and electron-donating segments (carbazole-triphenylamines), has been synthesized and characterized In order to investigate the effect of hole/electron charge transporting segments, two reference polymers PSF and PCF, containing only one charge transporting moiety in the polymer backbone, were also synthesized. Incorporation of the rigid spirobifluorene units substituted with cyanophenyl groups into the polymer backbone improved not only the thermal stabilities but also the photoluminescence efficiencies. The polymers except PSF possess similar hole injection barriers but different hole transporting abilities With the device configuration of ITO/PEDOT.PSS/polymers PBD/CsF/Ca/Al, PCC-2 showed the best performance with the lowest turn-on voltage of 3.1 V. the highest luminance of 6369 cd/m(2), the highest current efficiency of 1 97 cd/A, and the best power efficiency of 140 1m/w (C) 2010 Elsevier Ltd. All rights reserved
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收藏
页码：1270 / 1278
页数：9
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