Phenoxazine donor-based sulfur-phosphorus heterocyclic compound and application thereof

The invention provides a phenoxazine donor-based sulfur-phosphorus heterocyclic compound, which takes a benzosulfur-phosphorus heterocyclic ring as a parent, has a phenoxazine substituent group, and has good intramolecular electron transport performance and thermal stability. The electrophosphorescent device prepared from the compound has relatively high power efficiency, current efficiency, luminous efficiency and brightness, and also has good stability so as to meet the performance requirements on luminescent devices in practical application. 本发明提供了一种基于吩噁嗪给体的硫磷杂环化合物，其以苯并硫磷杂环为母体，带有吩噁嗪取代基团，其具有良好的分子内电子传输性能和热稳定性。由其制备得到的电致磷光器件具有较高的功率效率、电流效率、发光效率、亮度，同时也具有良好的稳定性，以满足实际应用中对发光器件的性能需求。