Luminescence response mode and chemical sensing mechanism for lanthanide-functionalized metal–organic framework hybrids,Inorganic Chemistry Frontiers

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Luminescence response mode and chemical sensing mechanism for lanthanide-functionalized metal–organic framework hybrids
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2020-10-22 , DOI: 10.1039/d0qi01153c
Bing Yan _{1,

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Affiliation

The luminescence response application in chemical sensing by metal–organic frameworks (MOFs) and their hybrid materials has been reported extensively in recent years. However, the reviews on this topic are mainly focused on the sensing materials (MOFs and their functionalized hybrid materials) and analytes (all types of species). In this comprehensive review, the luminescence response mode and chemical sensing mechanism for lanthanide-functionalized MOF hybrids (abbreviated as LnFMOFH) are systematically summarized. Specifically, ten sections are subdivided, and importantly involve three main topics. Firstly, LnFMOFH and the luminescence responsive chemical sensing for these hybrids are introduced. Secondly, three single luminescence response modes, including “Turn-Off”, “Turn-On” “Turn–Off–On” and dual mode, as ratiometric luminescence (RL) for chemical sensing in LnFMOFH materials are summarized. Thirdly, some types of chemical sensing mechanisms observed in LnFMOFH materials are outlined, which involve the ligand–metal energy transfer (LMET) for the luminescence response in chemical sensing of enhanced or weakened analytes; the fluorescence (Förster) resonance energy transfer (FRET) and photo-induced electronic transfer (PET) mechanism depending on the energy match between the probe and analyte; and some special chemical interactions for their luminescence response upon chemical sensing, such as hydrogen bonding interaction, coordination interaction and other reactions. Finally, the conclusion and prospects are given for this topic. It needs to be noted that pure lanthanide MOFs (lanthanide ions as the framework metal, including mixed lanthanide MOFs) are not the topic of this review and are only mentioned for background knowledge. Herein, LnFMOFH materials in which the lanthanide ions behave only as photoactive species to functionalize MOF units via post-synthetic modification (PSM) by researchers are the emphasis of this review.

中文翻译：

镧系官能化金属-有机骨架杂化物的发光响应模式和化学传感机理

近年来，已经广泛报道了金属有机框架（MOF）及其混合材料在化学传感中的发光响应应用。但是，有关此主题的评论主要集中在传感材料（MOF及其功能化的混合材料）和分析物（所有类型的物种）上。在这篇综述中，系统地总结了镧系官能化MOF杂化物（缩写为LnFMOFH）的发光响应模式和化学感应机理。具体来说，分为十个部分，重要的是涉及三个主要主题。首先，介绍了LnFMOFH和这些杂种的发光响应化学传感。其次，三种单一发光响应模式，包括“关闭”，“开启”，“关闭-开启”和双重模式，总结了用于LnFMOFH材料中化学传感的比例发光（RL）。第三，概述了在LnFMOFH材料中观察到的某些类型的化学传感机制，包括配体-金属能量转移（LMET），用于增强或减弱分析物的化学传感中的发光响应。取决于探针和分析物之间的能量匹配的荧光（Förster）共振能量转移（FRET）和光致电子转移（PET）机制；以及一些特殊的化学相互作用（例如氢键相互作用，配位相互作用和其他反应），它们会在化学感应时产生发光响应。最后，给出了本课题的结论和展望。需要注意的是，纯镧系元素MOF（镧系元素离子作为骨架金属，包括混合镧系元素MOF）不在本评论中，仅出于背景知识而提及。在本文中，镧系元素离子仅作为光敏物质起作用以使MOF单元功能化的LnFMOFH材料研究人员通过合成后修饰（PSM）进行的研究是本文的重点。

更新日期：2020-11-05

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