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Improvement of Luminescence Quantum Efficiency by Intermolecular Interaction

机译:分子间相互作用提高发光量子效率

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Due to their unique photophysical properties,highly fluorescent compounds are currently of great interest for material science applications,such as photo-electronics,organic light-emitting diodes (OLEDs) and chemical sensors.1 In particular,efforts have focused on the improvement of fluorescence quantum yields (PHI_F),since the PHI_F of emitting materials and the device efficiency in OLEDs are generally related.2 For this purpose,several approaches have been suggested including the attachment of anthracene and/or pyrene units having high PHI_F to the molecular framework,the extension of pi-conjugation and the introduction of electron-withdrawing groups (F,CN,etc) as substituents.
机译:由于其独特的光物理特性,高荧光化合物目前在材料科学应用中引起了极大的兴趣,例如光电,有机发光二极管(OLED)和化学传感器。1特别是,人们集中精力在改善荧光上量子产率(PHI_F),因为发光材料的PHI_F和OLED中的器件效率通常相关。2为此,建议了几种方法,包括将具有高PHI_F的蒽和/或pyr单元连接到分子骨架上,扩展π共轭和引入吸电子基团(F,CN等)作为取代基。

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