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Rapid switch-on fluorescent detection of nanomolar-level hydrazine in water by a diacetoxy-functionalized MOF: application in paper strips and environmental samples.
Dalton Transactions ( IF 3.5 ) Pub Date : 2020-08-05 , DOI: 10.1039/d0dt02491k Soutick Nandi 1 , Mostakim Sk 1 , Shyam Biswas 1
Dalton Transactions ( IF 3.5 ) Pub Date : 2020-08-05 , DOI: 10.1039/d0dt02491k Soutick Nandi 1 , Mostakim Sk 1 , Shyam Biswas 1
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Here, we present a new diacetoxy-functionalized UiO-66 metal–organic framework (MOF) for the trace level detection of hydrazine in water. The MOF material (1) was solvothermally prepared by the reaction between ZrOCl2·8H2O and 2,5-diacetoxy-1,4-benzenedicarboxylic acid (H2BDC–(OCOCH3)2). The desolvated material (1′) showed a highly selective fluorescent turn-on signal towards hydrazine in water, which can be visualized by the naked eye under a UV lamp. Within 1 min of hydrazine addition, there was 14-fold fluorescence enhancement. The probe can detect hydrazine up to the nanomolar level (detection limit = 78.8 nM) in water. This detection limit is the lowest among MOF-based fluorescent probes for hydrazine. The material was also utilized for the sensing of hydrazine in paper strips and environmental water samples. Hydrazine-selective deprotection of ester groups anchored with the ligand is the principal reason behind the switch-on nature of sensing.
中文翻译：
通过二乙酰氧基官能化的MOF快速开启荧光检测水中的纳摩尔级肼：在纸条和环境样品中的应用。
在这里，我们提出了一种新的二乙酰氧基官能化的UiO-66金属有机框架（MOF），用于痕量水的检测。MOF材料（1）是通过ZrOCl 2 ·8H 2 O与2,5-二乙酰氧基-1,4-苯二甲酸（H 2 BDC-（OCOCH 3）2）之间的反应进行溶剂热制备的。去溶剂化的材料（1'）在水中显示出对肼的高度选择性的荧光开启信号，可以在UV灯下用肉眼将其可视化。在加入肼的1分钟内，荧光增强了14倍。该探针可以检测水中的纳摩尔水平（检测限= 78.8 nM）的肼。在肼的基于MOF的荧光探针中，该检测限最低。该材料还用于检测纸条和环境水样中的肼。与配体锚定的酯基的肼选择性脱保护是传感开启性质背后的主要原因。
更新日期：2020-09-22
中文翻译：
通过二乙酰氧基官能化的MOF快速开启荧光检测水中的纳摩尔级肼：在纸条和环境样品中的应用。
在这里，我们提出了一种新的二乙酰氧基官能化的UiO-66金属有机框架（MOF），用于痕量水的检测。MOF材料（1）是通过ZrOCl 2 ·8H 2 O与2,5-二乙酰氧基-1,4-苯二甲酸（H 2 BDC-（OCOCH 3）2）之间的反应进行溶剂热制备的。去溶剂化的材料（1'）在水中显示出对肼的高度选择性的荧光开启信号，可以在UV灯下用肉眼将其可视化。在加入肼的1分钟内，荧光增强了14倍。该探针可以检测水中的纳摩尔水平（检测限= 78.8 nM）的肼。在肼的基于MOF的荧光探针中，该检测限最低。该材料还用于检测纸条和环境水样中的肼。与配体锚定的酯基的肼选择性脱保护是传感开启性质背后的主要原因。
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