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首页> 外文期刊>ACS applied materials & interfaces >Macroscopic Architecture of Charge Transfer-Induced Molecular Recognition from Electron-Rich Polymer Interpenetrated Porous Frameworks
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Macroscopic Architecture of Charge Transfer-Induced Molecular Recognition from Electron-Rich Polymer Interpenetrated Porous Frameworks

机译：富含电子的聚合物互穿的多孔构架的电荷转移诱导分子识别的宏观体系

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摘要

Fluorescent and electron-rich polymer threaded into porous framework provides a scaffold for sensing acceptor molecules through noncovalent interactions. Herein, poly(9-vinylcarbazole) (PVK) threaded MIL-101 with confined nanospace was synthesized by vinyl-monomer impregnation, in situ polymerization, and interpenetration. The pore size of the resulted hybrid could be controlled by varying the time of polymerization and interpenetration. The interaction of PVK-threaded MIL-101 with guest molecules showed a charge-transfer progress with an obvious red shift in the optical spectra. Depending on the degree of the interaction, the solution color changed from blue to green or to yellow. In particular, electron-rich PVK-threaded MIL-101 could effectively probe electron-poor nitro compounds, especially 1,3,5-trinitrobenzene (TNP), a highly explosive material. This sensing approach is a colorimetric methodology, which is very simple and convenient for practical analysis and operation.
机译：穿入多孔框架的荧光和富电子聚合物提供了一种通过非共价相互作用感应受体分子的支架。在此，通过乙烯基单体浸渍，原位聚合和互穿来合成具有受限纳米空间的聚（9-乙烯基咔唑）（PVK）螺纹的MIL-101。可以通过改变聚合和互穿的时间来控制所得杂化物的孔径。 PVK螺纹的MIL-101与客体分子的相互作用显示了电荷转移过程，光谱中出现了明显的红移。根据相互作用的程度，溶液的颜色从蓝色变为绿色或黄色。特别是，富含电子的PVK螺纹的MIL-101可以有效地探测贫电子的硝基化合物，尤其是1,3,5-三硝基苯（TNP），一种极易爆炸的材料。这种感测方法是比色法，对于实际分析和操作而言非常简便。

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