发光
单独一对
聚氨酯
氢键
侧链
材料科学
光化学
荧光
聚合物
化学物理
化学
高分子化学
化学工程
有机化学
光电子学
分子
复合材料
物理
光学
工程类
作者
Xinzhe Xiao,Shuzhen Zhou,Lin Gu
标识
DOI:10.1021/acs.macromol.3c02393
摘要
The intrinsic luminescent properties of waterborne polyurethane (WPU) as an industrial-scale nonconjugated polymer and the role of side groups in its intrinsic luminescence remain unclear and require further exploration. In this work, a series of WPUs with different side carboxyl contents were prepared, which exhibit clusterization-triggered emission (CTE) characteristics. The carboxyl group of the side carboxyl groups strengthened the hydrogen bond, electron overlap between lone pairs and π electrons, and dipole–dipole and n–π* interactions, thereby enhancing the emission intensity. Furthermore, leveraging the clusteroluminescence characteristics of WPU, various applications have been developed, including explosive and Fe3+ detection, damage tracing, and stretch fluorescence change. This work not only enhances our understanding of the clusteroluminescence mechanism but also provides an effective approach for designing and operating nonconjugated fluorescent materials.
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