Poly‐(p‐phenylene vinylenes) with pendent 2,4‐difluorophenyl and fluorenyl moieties: Synthesis, characterization, and device performance
Poly‐(p‐phenylene vinylenes) with pendent 2,4‐difluorophenyl and fluorenyl moieties: Synthesis, characterization, and device performance
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DOI：
10.1002/pola.23322
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发表时间：
2009-05
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影响因子：
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通讯作者：
Shengbiao Li;Ping Zhao;Yan-Qin Huang;Tingcheng Li;Chao Tang;Rui Zhu;Lei Zhao;Quli Fan;Shiqiang Huang;Zushun Xu;Wei Huang
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文献类型：
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作者：
Shengbiao Li;Ping Zhao;Yan-Qin Huang;Tingcheng Li;Chao Tang;Rui Zhu;Lei Zhao;Quli Fan;Shiqiang Huang;Zushun Xu;Wei Huang
为了提高反应的效率、加工性和稳定性，通过Gilch反应合成了3种含2，4-二氟苯基和荧基的新型聚对苯基乙烯(PPVs)衍生物(Pa、Pb和Pc)。其结构经核磁共振氢谱、核磁共振碳谱和元素分析确证。肛门。与PPV和MEH-PPV相比，这些聚合物的绝对量子效率显著提高(分别为38.7、37.2和20.3%)，这归因于多芳基链段的扭曲和氟原子的存在。热重分析表明，它们的热分解曲线拐点温度在400℃以上。以这些聚合物为发光层的双层电致发光器件的峰值发射波长分别为493/515,503和600 nm，最大亮度分别为2700cd/m2,450和4700cd/m2，起始电压为∼4V。
To improve efficiency, processability, and stability, three novel poly-(p-phenylene vinylenes) (PPVs) derivatives (Pa, Pb, and Pc) with pendent 2,4-difluorophenyl and fluorenyl moieties were synthesized via Gilch reaction. Their structures were characterized by 1H NMR, 13C NMR, and ELEM. ANAL. Compared with those of PPV and MEH-PPV, the absolute quantum efficiencies of these polymers showed remarkable improvement (measured at 38.7, 37.2, and 20.3%, respectively), which can be attributed to the presence of twisted multiaryl segments and fluorine atoms. TGA revealed that the inflection temperatures of their thermal decomposition curves were above 400 °C. Double-layered electroluminescent devices with these polymers as light-emitting layers [ITO/PEDOT:PSS/Polymer/Ba/Al] showed peak emissions at 493/515, 503, and 600 nm and maximum luminance of 2700, 450, and 4700 cd/m2 for Pa, Pb, and Pc, respectively, with onset voltages of ∼4 V. © 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 47: 2500–2508, 2009