Synthesis and Photoelectric Properties of New Pr-bonded Polymers by Coordination of Isopropyloxide and Bipyridine Unit  

作　　者：wei lv 王文 chun-lei zhang yan zhao hong-yu zhen 凌启淡 

机构地区：[1]College of Chemistry and Chemical Engineering, College of Materials Science and Engineering,Fujian Normal University, Fujian Key Laboratory of Polymer Materials, Fuzhou 350007, China

出　　处：《Chinese Journal of Polymer Science》2017年第3期342-353,共12页高分子科学（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.21574021 and 51573026);the Natural Science Foundation of Fujian Province(No.2015J01189);the Program for Innovative Research Team in Science and Technology in Fujian Province(IRTSTFJ);the Program of the Education Department of Fujian Province(No.JA14078)

摘　　要：A series of novel praseodymium（Pr）-bonded polymers were successfully synthesized via the coordination reaction and palladium-catalyzed Suzuki coupling reaction of 2,7-dibromo-9,9’-dioctylfluorene and different amounts of 5,5’-dibromo-2,2’-bipyridine. The resulting polymers were characterized by;H-NMR and GPC. The photoluminescence（PL） and electroluminescence（EL） properties of the resulting polymers were studied to explore the effects of the Pr triisopropyloxide. The results showed that the incorporation of Pr into the polymers caused better coplanarity and effective intermolecular or intramolecular interaction, leading to the higher emission intensity at long-wavelength. Further, it was also found that the emission light color could be tuned from blue to green by introduction of a small amount of Pr into the polymer main chain. A single-layer green emitting EL device based on PF（Bipy Pr）6 with 6 mol% Pr content was fabricated. The device had a low turn-on voltage of 6 V, a brightness of 705.3 cd·m;, the maximum luminous efficiency of 1.53 cd·A;and the maximum power efficiency of 0.69 lm·W;.A series of novel praseodymium(Pr)-bonded polymers were successfully synthesized via the coordination reaction and palladium-catalyzed Suzuki coupling reaction of 2,7-dibromo-9,9'-dioctylfluorene and different amounts of 5,5'-dibromo-2,2'-bipyridine. The resulting polymers were characterized by ~1H-NMR and GPC. The photoluminescence(PL) and electroluminescence(EL) properties of the resulting polymers were studied to explore the effects of the Pr triisopropyloxide. The results showed that the incorporation of Pr into the polymers caused better coplanarity and effective intermolecular or intramolecular interaction, leading to the higher emission intensity at long-wavelength. Further, it was also found that the emission light color could be tuned from blue to green by introduction of a small amount of Pr into the polymer main chain. A single-layer green emitting EL device based on PF(Bipy Pr)6 with 6 mol% Pr content was fabricated. The device had a low turn-on voltage of 6 V, a brightness of 705.3 cd·m^(-2), the maximum luminous efficiency of 1.53 cd·A^(-1) and the maximum power efficiency of 0.69 lm·W^(-1).

关 键 词：POLYFLUORENE PRASEODYMIUM Light-emitting polymers BIPYRIDINE 

分 类 号：O641.4[理学—物理化学]