Novel oxacalix[2]arene[2]triazines with thermally activated delayed fluorescence and aggregation-induced emission properties

New kinds of oxacalixarenes based on the triazine moiety have been synthesized, which showed highly twisted conformations and small ΔEST, as well as temperature-dependent transient PL decay curves, indicating the excellent thermally activated delayed fluorescence properties. Moreover, the oxacalixarenes also exhibited apparent aggregation-induced emission properties in THF/H2O mixtures.