Organic mechanoluminescence materials, featuring dual emission and ultralong phosphorescence characteristics, exhibit significant potential for applications in real-time stress sensing, pressure-sensitive lighting, advanced security marking techniques, and material breakage monitoring. However, due to immature molecular design strategies and unclear luminescence mechanisms, these materials remain rarely reported. In this study, we propose a valuable molecular design strategy to achieve dual-channel mechano-phosphorescence. By introducing the arylphosphine oxide group into a highly twisted molecular framework, enhanced intra- and intermolecular interactions could be achieved within rigid structures, leading to dual-channel mechanoluminescence with greatly promoted ultralong phosphorescence. Further investigations reveal the substantial boosting effect of intra- and intermolecular interactions on mechanoluminescence and ultralong phosphorescence properties by locking the highly twisted molecular skeleton. This work provides a concise and guiding route to develop novel smart responsive luminescence materials for widespread applications in material science.

有机机械发光材料具有双发射和超长磷光特性，在实时应力传感、压敏照明、先进安全标记技术和材料破损监测等领域具有巨大的应用潜力。然而，由于分子设计策略不成熟和发光机制不明确，这些材料仍然很少被报道。在这项研究中，我们提出了一种有价值的分子设计策略来实现双通道机械磷光。通过将芳基氧化膦基团引入高度扭曲的分子框架中，可以在刚性结构内增强分子内和分子间相互作用，从而产生双通道机械发光，并大大促进超长磷光。进一步的研究揭示了通过锁定高度扭曲的分子骨架，分子内和分子间相互作用对机械发光和超长磷光特性的显着增强作用。这项工作为开发新型智能响应发光材料以在材料科学中广泛应用提供了一条简洁且具有指导意义的路线。