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Design of mechanical-robust phosphorescence materials through covalent click reaction
Nature Communications ( IF 14.7 ) Pub Date : 2023-08-05 , DOI: 10.1038/s41467-023-40451-2
Rui Tian 1 , Shuo Gao 1 , Kaitao Li 1 , Chao Lu 1, 2
Affiliation  

It remains a great challenge to engineer materials with strong and stable interactions for the simultaneously mechanical-robust and room temperature phosphorescence-efficient materials. In this work, we demonstrate a covalent cross-linking strategy to engineer mechanical-robust room temperature phosphorescence materials through the B–O click reaction between chromophores, polyvinyl alcohol matrix and inorganic layered double hydroxide nanosheets. Through the covalent cross-linkage between the organic polyvinyl alcohol and inorganic layered double hydroxide, a polymeric composite with ultralong lifetime up to 1.45 s is acquired based on the inhibited non-radiative transition of chromophores. Simultaneously, decent mechanical strength of 97.9 MPa can be realized for the composite materials due to the dissipated loading stress through the covalent-bond-accommodated interfacial interaction. These cross-linked composites also exhibit flexibility, processability, scalability and phosphorescence responses towards the mechanical deformation. It is anticipated that the proposed covalent click reaction could provide a platform for the design and modulation of composites with multi-functionality and long-term durability.



中文翻译:

通过共价点击反应设计机械鲁棒的磷光材料

对于同时具有机械鲁棒性和室温磷光效率的材料来说,设计具有强而稳定的相互作用的材料仍然是一个巨大的挑战。在这项工作中,我们展示了一种共价交联策略,通过发色团、聚乙烯醇基质和无机层状双氢氧化物纳米片之间的 B-O 点击反应来设计机械鲁棒的室温磷光材料。通过有机聚乙烯醇与无机层状双氢氧化物之间的共价交联,基于发色团非辐射跃迁的抑制,获得了超长寿命高达1.45 s的聚合物复合材料。同时,由于通过共价键适应的界面相互作用消散了负载应力,复合材料可以实现 97.9 MPa 的良好机械强度。这些交联复合材料还表现出柔韧性、可加工性、可扩展性和对机械变形的磷光响应。预计所提出的共价点击反应可以为具有多功能和长期耐久性的复合材料的设计和调制提供平台。

更新日期:2023-08-05
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