Linker installation has proven to be an effective strategy for introducing diverse functional groups into metal–organic frameworks (MOFs). Reductants and oxidants are found in various environments, but their accumulation poses a danger due to their high reactivity, necessitating prompt monitoring instantly, particularly in natural environments and industrial processes. In this study, a series of redox‐active dyes were successfully incorporated into a flexible Zr‐based MOF, PCN‐700, through linker installation strategy. Notably, both the reduction of PCN‐700‐Resazurin towards oxidants and oxidation of PCN‐700‐Amplex Red towards reductants result in the formation of PCN‐700‐Resorufin, which exhibit visible color changes and largely elevated luminescent intensities, giving rise to the quantitative recognition of reductants and oxidants. This work presents a straightforward approach to developing efficient luminescent sensors for the rapid qualitative and quantitative detection of reductants and oxidants, extending the sensing mechanism from common energy transfer to electron transfer and demonstrating the MOF’s versability as a highly designable sensing material for target analytes.

中文翻译：

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在金属有机框架中安装接头，以增强定量氧化还原物质识别


Linker 安装已被证明是将不同官能团引入金属有机框架 （MOF） 的有效策略。还原剂和氧化剂存在于各种环境中，但由于它们的高反应性，它们的积累会带来危险，因此需要立即进行及时监测，尤其是在自然环境和工业过程中。在这项研究中，通过接头安装策略，一系列氧化还原活性染料成功地掺入了灵活的基于 Zr 的 MOF PCN-700 中。值得注意的是，PCN-700-刃天青向氧化剂的还原和 PCN-700-Amplex Red 向还原剂的氧化都导致 PCN-700-试卤灵的形成，其表现出明显的颜色变化和显着升高的发光强度，从而引起还原剂和氧化剂的定量识别。这项工作提出了一种开发高效发光传感器的简单方法，用于还原剂和氧化剂的快速定性和定量检测，将传感机制从普通能量转移扩展到电子转移，并证明了 MOF 作为目标分析物的高度可设计传感材料的可逆性。