Synthesis and properties of σ-π conjugated alternating polymers consisting of carbazole and organosilicon units
Synthesis and properties of σ-π conjugated alternating polymers consisting of carbazole and organosilicon units
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咔唑和有机硅单元σ-π共轭交替聚合物的合成及性能
DOI：
10.1002/aoc.171
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发表时间：
2001
影响因子：
3.9
通讯作者：
K. Okita
中科院分区：
文献类型：
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作者：
K. Sakamaki;J. Ohshita;A. Kunai;H. Nakao;A. Adachi;K. Okita
我们合成了具有有机硅烯和σ-π-电子交替体系的新型π共轭聚合物，打算将其用于电致发光器件的空穴传输材料。3，6-二(硫代乙炔基)咔唑与有机二氯硅烷共聚，得到了相对分子质量为 = 2000-5000的聚合物。通过镍催化1，2-双[2-(5-溴硫基)]四乙基二硅烷和3，6-二溴咔唑的二格氏试剂与3，6-二溴咔唑的反应，合成了另一类含亚硫烯基团的聚合物，其相对分子质量为Mn = 3100。由三(8-喹啉)铝(III)和目前的聚合物分别作为发射电子传输层和空穴传输层的双层体系的EL器件，发射出最大强度为103 Cd m−2量级的绿色EL。
We have synthesized novel σ–π conjugated polymers with an alternating organosilanylene and π-electron system, intending to utilize them for hole-transporting materials of electroluminescent (EL) devices. 3,6-Di(lithioethynyl)carbazoles were co-polymerized with organodichlorosilanes to give the corresponding polymers with molecular weights of MW = 2000–5000. Another type of polymer with a thienylene unit was also synthesized by the nickel-catalyzed reaction of the di-Grignard reagent of 1,2-bis[2-(5-bromothienyl)]tetraethyldisilane with 3,6-dibromocarbazole, the molecular weight being Mn = 3100. The EL devices with a double-layer system composed of tris(8-quinolinolato)aluminum(III) and the present polymers as the emitting-electron-transporting and hole-transporting layers, respectively, emit green EL with a maximum intensity of the order of 103 cd m−2. Of these, the device with the thienylene–carbazole polymers exhibited the highest luminance of 1480 cd m−2. Copyright © 2001 John Wiley & Sons, Ltd.