A dynamic, luminescent and entangled MOF as a qualitative sensor for volatile organic solvents and a quantitative monitor for acetonitrile vapour
A dynamic, luminescent and entangled MOF as a qualitative sensor for volatile organic solvents and a quantitative monitor for acetonitrile vapour
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DOI：
10.1039/c3sc00016h
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发表时间：
2013-03
期刊：
影响因子：
8.4
通讯作者：
Jun-Hao Wang;Mian Li;Dan Li
中科院分区：
文献类型：
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作者：
Jun-Hao Wang;Mian Li;Dan Li
一种新的发光纠缠（SRS）网络具有双重互穿，通过短的Cu-Cu距离约。2.8 A）合成了含微孔孔道的MOF，即[（CuCN）3L·（客体）x]n（L = 2，6-双（（3，5-二甲基-1H-吡唑-4-基）甲基）吡啶; x = 1或2）。这种MOF材料在吸附各种挥发性有机溶剂分子时显示出结构动力学，伴随着肉眼可辨别的荧光发射的可逆客体响应颜色变化。这种材料的真空形式也可以对各种混合溶剂表现出定性的溶剂-光学传感行为。此外，一个定量的实时监测装置的构建，实现了通过光学响应，这会导致从蓝色到黄色的急剧变化的发射乙腈蒸气压的测定。详细的结构解析为主客体响应动力学提供了结构-性质的理解。
A new luminescent entangled (srs nets with two-fold interpenetration, linked via short Cu⋯Cu distances of ca. 2.8 A) MOF, namely, [(CuCN)3L·(guest)x]n (L = 2,6-bis((3,5-dimethyl-1H-pyrazol-4-yl)methyl)pyridine; x = 1 or 2), which contains microporous channels, is synthesized. This MOF material shows structural dynamics upon adsorption of various volatile organic solvent molecules, accompanied by reversible guest responsive colour changes of the fluorescence emission that are discernible by the naked eyes. The vacuated form of this material can also exhibit qualitative solvate-optical sensing behaviours toward various mixed solvents. Moreover, a quantitative real-time monitoring device is constructed that implements the determination of acetonitrile vapour pressure through optical response, which causes a drastic emission change from blue to yellow. The detailed structural elucidation provides structure–property understanding for the host–guest responsive dynamics.