可溶液加工蓝色聚集诱导发光小分子的合成及其器件性能
收稿日期: 2016-07-28
网络出版日期: 2016-08-24
基金资助
国家科技部973项目（No.2013CB834701）和国家自然科学基金委项目（Nos.21325416，51573140，6715751469）.
Synthesis of Solution Processable Blue AIEgens and the Device Performance
Received date: 2016-07-28
Online published: 2016-08-24
Supported by
Project supported by the National Fundamental Key Research Program (No. 2013CB834701) and the National Natural Science Foundation of China (Nos. 21325416, 51573140, 6715751469).
利用四苯基甲烷中碳原子特殊的sp3轨道杂化结构来打断并控制分子内共轭程度，并采用硅原子替换四苯基甲烷中的碳原子合成四苯基硅烷.将这两种结构作为核，在其四周以四苯乙烯（TPE）或三苯乙烯（triPE）修饰，设计并合成了六个具有聚集诱导发光（AIE）效应的小分子.这些分子均可以溶解在常见有机溶剂中并具有良好的热稳定性.通过溶液旋涂法将其应用到有机电致发光器件（OLED）中，得到最好的器件效率为亮度最大值（Lmax）1730 cd·m-2，电流效率最大值（Lmax）2.21 cd·A-1，功率最大值（ηp，max）0.77 lm·W-1，外量子效率最大值（ηext，max）1.01%.
余韵 , 杨杰 , 任子淳 , 谢国华 , 李倩倩 , 李振 . 可溶液加工蓝色聚集诱导发光小分子的合成及其器件性能[J]. 化学学报, 2016 , 74(11) : 865 -870 . DOI: 10.6023/A16070372
By utilizing the special sp3 hybridization of tetraphenylmethane to break and control the intramolecular conjugation, and using silicon atom to replace the carbon atom in tetraphenylsilane, six molecules of C-4pTPE, C-4mTPE, C-4triPE, Si-4pTPE, Si-4mTPE, and Si-4triPE, were designed and successfully obtained, with tetraphenylethylene (TPE) and triphenylethylene (triPE) introduced to the core of tetraphenylmethane or tetraphenylsilane as rotors. These six molecules all possess typical aggregation induced emission (AIE) properties, they are all nearly nonemissive when readily dissolved in pure THF, but with the water fraction increasing, the PL intensity gradually increased. Due to their good AIE properties and thermal stability, they were fabricated in OLED devices by the solution process conveniently, with the maximum luminance (Lmax), maximum current efficiency (ηC,max), maximum power efficiency (ηp,max) and maximum external quantum efficiency (ηext,max) at 1730 cd·m-2, 2.21 cd·A-1, 0.77 lm·W-1 and 1.01%, respectively.
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