AbstractThe photooxidative stability of a series of doubly bridged anthracenes was evaluated after their preparation via twofold macrocyclization of a bis(resorcinyl)anthracene. Lightfastness correlates with the energy levels of the highest occupied molecular orbital (HOMO), resulting in superior stability of the tetraesters compared to the tetraethers. The lengths and steric demand of the linker only plays a minor role for the ester‐based compounds, which can be prepared in reasonable yields and thus tested in proof‐of‐concept organic light‐emitting diodes. Double ester‐bridging allows deep blue electro‐luminescence, highlighting the importance of the choice of the functional groups used for macrocyclization.
摘要 通过对双(间苯二酚)蒽进行两次大环化制备出一系列双桥蒽后,对其光氧化稳定性进行了评估。耐光性与最高占位分子轨道(HOMO)的能级相关,因此四酯的稳定性优于四醚。对于酯基化合物来说,连接体的长度和立体要求只起很小的作用,这些化合物能以合理的产率制备,因此能在概念验证型有机发光二极管中进行测试。双酯桥接可实现深蓝色电致发光,这突出了选择用于大环化的官能团的重要性。