Abstract A new covalent organic framework (COF), PP-TzDa, has been synthesized by post-synthetic modification. Our studies suggest that the modification leads to the changes of both the stacking mode and the fluorescence emission. This new COF shows dual fluorescence emissions, and can be used as a ratiometric fluorescent temperature sensor. In the range of 20–100 °C, the COF suspensions in DMF exhibit the temperature dependent fluorescence and the intensity ratios of two emissions change linearly with temperature. The new COF can also be used as a ratiometric fluorescent sensor for MnO4-. This work represents the opportunity to tune their fluorescent properties and explore their applications of a variety of COFs by simple modification.

中文翻译：

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使用修饰的共价有机框架对温度和 MnO4- 进行比率荧光检测

摘要 通过合成后修饰合成了一种新的共价有机骨架（COF）PP-TzDa。我们的研究表明，这种修饰会导致堆叠模式和荧光发射的变化。这种新型 COF 显示出双荧光发射，可用作比率式荧光温度传感器。在 20–100 °C 范围内，DMF 中的 COF 悬浮液表现出温度依赖性荧光，并且两种发射的强度比随温度线性变化。新型 COF 还可用作 MnO4- 的比率荧光传感器。这项工作代表了通过简单修改来调整其荧光特性并探索其在各种 COF 中的应用的机会。