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首页> 外文期刊>Chemistry: A European journal >Toward the design and synthesis of lithium-ion intercalation into a coordination #pi#-#pi# framework host
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Toward the design and synthesis of lithium-ion intercalation into a coordination #pi#-#pi# framework host

机译：将锂离子插层的设计和合成转化为协调的#pi＃-＃pi＃框架宿主

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摘要

A #pi#-stacked coordination solid, [{(VO)_2(OH)_2(C_4O_4)(phen)_2]·H_2O]_n] (1: phen = phenanthroline), was synthesized by hydrothermal methods and structurally characterized by X-ray single-crystal diffraction. The structure of 1 adops a neutral open framework in which channeling apertures and windows are surrounded by four oxovanadyl dimers, two squarates, and two pairs of #pi#-#pi# interactions of phenanthroline groups; the dimensions of the windows are about 5.38 X 7.55 A alogn the C axis. Surprisingly, the porous framework with hydrophilic and hydrophobic characteristics was thermally stable up 250 deg C, as indicated from powder X-ray diffraction patterns and thermogravimetric analysis. Further investigation of lithium-ion intercalation into the channel matrix of 1 was conformed by ~7Li NMR spectroscopy and cyclic votammetry measurements. The present case represents the first example of a porous coordination solid tht possesses polar channels capable of mediating lithiumion insertion.
机译：通过水热法合成了＃pi＃堆积的配位固体[{（VO）_2（OH）_2（C_4O_4）（phen）_2]·H_2O] _n]（1：phen =邻菲咯啉），并用X进行结构表征射线单晶衍射。 1的结构是一个中性开放框架，其中通道孔和窗口被四个氧杂钒基二聚体，两个平方和菲咯啉基团的两对#pi＃-＃pi＃相互作用包围;窗口的尺寸约为C轴的5.38 X 7.55A。令人惊讶地，如粉末X射线衍射图和热重分析所示，具有亲水和疏水特性的多孔骨架在250℃下是热稳定的。通过〜7Li NMR光谱和循环伏安法测量，进一步研究了锂离子嵌入1的通道矩阵的过程。当前情况代表了多孔配位固体的第一个例子，其具有能够介导锂离子插入的极性通道。

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