A new type of simple emissive organic cage consisting of diphenyl sulfone units and nitrogen atoms was developed via one-pot C-N coupling condensation or two-step reactions along with a series of sulfoxide cages obtained, which exhibited excellent chemical modifiability and structural stability. By precisely controlling the participation of donor and acceptor units, a highly soluble organic cage with delayed fluorescence was obtained for the first time. More interestingly, due to the restriction of intramolecular flipping by locking the building blocks within a rigid framework, this emissive organic cage further showed narrowband ultra-deep blue electroluminescence emission at 413 nm with a full-width at half-maximum of 35 nm. This finding not only expands the family of electroluminescent organic cages, but also opens up a new platform for delayed fluorescence materials with high solubility and color purity.

通过一锅式CN偶联缩合或两步反应以及一系列亚砜笼，开发了一种新型的由二苯砜单元和氮原子组成的简单的发光有机笼，该笼具有一系列优异的化学修饰性和结构稳定性。通过精确控制供体和受体单元的参与，首次获得了具有延迟荧光的高可溶性有机笼。更有趣的是，由于通过将结构单元锁定在刚性框架内而限制了分子内翻转，因此这种有机发光框进一步显示了在413 nm处的窄带超深蓝色电致发光发射，且半峰全宽为35 nm。这一发现不仅扩展了电致发光有机笼的种类，