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首页> 外文会议>International Conference on "Multidimensional Role of Basic Science in Advanced Technology" >Synthesis and Optical Study of Ortho, Meta and Para Methoxy Substituted 2, 4 -Diphenyl Quinoline
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Synthesis and Optical Study of Ortho, Meta and Para Methoxy Substituted 2, 4 -Diphenyl Quinoline

机译：邻，荟萃和甲氧基取代2,4-二苯基喹啉的合成和光学研究

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A newly blue light - emitting material, ortho, meta, and para methoxy substituted 2, 4 diphenyl quinoline (0-DPQ, m-DPQ & p-DPQ) were synthesized in nitrogen (N2) gas atmosphere at 140°c by using Friedlander condensation reaction. To tune the optical properties of DPQ derivatives, the structure -property relationship for the position and number of methoxy groups attached are taken into consideration. Based on our previously synthesized DPQ, we systematically designed some novel derivatives with tuned optical properties. For instance, the rotation of Methoxy (-OCH3) group substitutions at three different possible O, M & P positions on phenyl ring show significant changes in optical properties of quinoline derivatives. Three new polymeric compound o-DPQ, m-DPQ and p-DPQ consisting of 2,4 DPQ with a -OCH3 group at o, m & p position of the metalated phenyl ring respectively, as the main ligands were synthesized. We realized that -OCH3 position extremely affects the crucial photo physical and electronic properties such as emission color, photoluminescence quantum yield (PLQY) and energy levels of these polymeric compounds resulting in -OCH3 position-dependant performance of their PhOLEDs. These compounds may be used for solution -processed easily accessible blue emitter in phosphorescent organic light-emitting diodes (PhOLEDs). The absorption spectrum of synthesized o-DPQ, m-DPQ and p-DPQ in DCM (dichloromethane) and AA (acetic acid) solution at room temperature were taken. Three absorption peaks in synthesized polymeric compound at 254nm, 327nm, and 330nm respectively are observed. The absorption peaks in asymmetric o-DPQ, m-DPQ, and p-DPQ are found to be λ_(max) =330 nm suggests a strong π-π* conjugation. Thus, our investigation reveals that DPQ derivatives with para methoxy phenyl groups possess reasonably large amplitudes of their first hyper polarizabilty and good optical transparency (2.9" -4.5 ev), which can make them attractive candidate for nonlinear optical
机译：通过使用弗里德兰德在140℃下在氮气（N2）气体气氛中合成新蓝光发光材料，Ortho，Meta和Para甲氧基取代的2,4个二苯基喹啉（0-DPQ，M-DPQ和P-DPQ）凝结反应。为了调整DPQ衍生物的光学性质，考虑了附着附着的甲氧基的位置和数量的结构 - 备受关系。基于我们以前合成的DPQ，我们系统地设计了一些具有调谐光学性质的新型衍生物。例如，在苯环上的三种不同可能的O，M＆P位置的甲氧基（-OOCH3）组取代的旋转显示喹啉衍生物的光学性质的显着变化。三种新的聚合物化合物O-DPQ，M-DPQ和P-DPQ分别由2,4dPQ组成的2,4dPQ，分别在金属化苯基环的O，M＆P位置，作为主配体的M＆P位置。我们意识到 - COOCH3位置极大地影响了这些聚合物化合物的发光颜色，光致发光量子产率（PLQY）和能量水平的关键照片，导致它们的药物的依赖性依赖性的性能。这些化合物可用于溶液中易于接近的蓝色发射极，在磷光有机发光二极管（Pholed）中。取出在室温下合成的O-DPQ，M-DPQ，M-DPQ，AA（乙酸）溶液中合成的O-DPQ，M-DPQ和P-DPQ的吸收光谱。观察分别在254nm，327nm和330nm处的合成聚合物化合物中的三个吸收峰。发现不对称O-DPQ，M-DPQ和P-DPQ中的吸收峰是λ_（max）= 330nm表明强的π-π*缀合。因此，我们的研究表明，具有对甲氧基苯基的DPQ衍生物具有合理大的它们的第一个超级偏振和良好的光学透明度（2.9“-4.5eV），这可以使它们具有吸引人的非线性光学候选者

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