Macroscopic architecture of charge transfer-induced molecular recognition from electron-rich polymer interpenetrated porous frameworks.
Macroscopic architecture of charge transfer-induced molecular recognition from electron-rich polymer interpenetrated porous frameworks.
复制标题
DOI：
10.1021/am5089549
复制
发表时间：
2015-02
影响因子：
9.5
通讯作者：
Linyi Bai;Peng Wang;P. Bose;Peizhou Li;R. Zou;Yanli Zhao
中科院分区：
文献类型：
--
作者：
Linyi Bai;Peng Wang;P. Bose;Peizhou Li;R. Zou;Yanli Zhao
荧光和富含电子的聚合物穿入多孔框架中，通过非共价相互作用为传感受体分子提供了支架。本文采用乙烯基单体浸渍、原位聚合和互穿的方法合成了聚9-乙烯基咔唑（PVK）纳米材料。所得杂化物的孔径可以通过改变聚合和互穿的时间来控制。PVK螺纹MIL-101与客体分子的相互作用表现出电荷转移过程，光谱出现明显红移。根据相互作用的程度，溶液颜色从蓝色变为绿色或黄色。特别是，富电子的PVK线程MIL-101可以有效地探测贫电子的硝基化合物，特别是1，3，5-三硝基苯（TNP），一种高度爆炸性的材料。这种传感方法是一种比色方法，这是非常简单和方便的实际分析和操作。
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.