Photophysical characterization of the 9,10-disubstituted anthracene chromophore and its applications in triplet–triplet annihilation photon upconversion
作者:Victor Gray、Damir Dzebo、Angelica Lundin、Jonathan Alborzpour、Maria Abrahamsson、Bo Albinsson、Kasper Moth-Poulsen
DOI:10.1039/c5tc02626a
日期:——
useful to know which part of the molecule can be altered in order to obtain new physical properties without losing the inherent optical properties. We have studied the effect of substitution of 9,10-substituted anthracenes. Eight anthracenes with aromatic phenyl and thiophene substituents were synthesised, containing both electron donating and accepting groups. The substitutions were found to affect
基于蒽的分子通常用于OLED和三重态-三重态an灭上转换等应用中。在将来的蓝色发光材料设计中,了解分子的哪一部分可以被改变以获得新的物理特性而又不丧失固有的光学特性是很有用的。我们已经研究了9,10-取代的蒽的取代作用。合成了具有芳族苯基和噻吩取代基的八个蒽,它们既包含给电子基团又包含接受电子基团。发现取代基仅在很小程度上影响UV / Vis吸收,但是噻吩取代基对荧光性质的影响更大,噻吩取代基将荧光量子产率从1降低到<10%。DFT计算证实了吸收的微小变化,并表明第一和第二三重态能量也不受影响。最后,成功利用了三种荧光最强的衍生物4-(10-苯基蒽-9-基)吡啶,9-苯基-10-(4-(三氟甲基)苯基)蒽和4-(10-苯基蒽-9-基)苄腈在三重态-三重态an灭上转换(TTA-UC)系统中使用八辛基铂卟啉铂作为敏化剂作为an灭剂。观察到的上转换量子产率,9-苯基-10-(4-(三氟甲基)苯基