Amine-Responsive Adaptable Nanospaces: Fluorescent Porous Coordination Polymer for Molecular Recognition
Amine-Responsive Adaptable Nanospaces: Fluorescent Porous Coordination Polymer for Molecular Recognition
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DOI：
10.1002/anie.201405619
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发表时间：
2014-10-27
影响因子：
16.6
通讯作者：
Maji, Tapas Kumar
中科院分区：
文献类型：
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作者：
Haldar, Ritesh;Matsuda, Ryotaro;Maji, Tapas Kumar
柔性和动态的多孔配位聚合物（PCP）与明确的纳米空间组成的发色有机连接剂提供了一个支架，通过非共价相互作用的多功能客体分子的封装。因此，PCP提供了一个潜在的分子识别平台。本文报道了一种柔性三维超分子骨架{[Zn（ndc）（o-phen）]center dot DMF}（n）（o-phen= 1，10-菲咯啉，ndc= 2，6-萘二甲酸酯），其具有有限的纳米空间，可以容纳不同的给电子芳胺客体，并具有选择性开启发射信号。该系统通过发射读出过程作为分子识别平台。这种前所未有的可调谐发射与不同的胺是由于其发射电荷转移（CT）络合与邻菲咯啉连接。在某些情况下，这种CT发射通过来自发色接头单元ndc的能量转移进一步放大，如通过单晶X射线结构表征所证明的。
Flexible and dynamic porous coordination polymers (PCPs) with well-defined nanospaces composed of chromophoric organic linkers provide a scaffold for encapsulation of versatile guest molecules through noncovalent interactions. PCPs thus provide a potential platform for molecular recognition. Herein, we report a flexible 3D supramolecular framework {[Zn(ndc)(o-phen)]center dot DMF}(n) (o-phen= 1,10-phenanthroline, ndc=2,6-napthalenedicarboxylate) with confined nanospaces that can accommodate different electron-donating aromatic amine guests with selective turn-on emission signaling. This system serves as a molecular recognition platform through an emission-readout process. Such unprecedented tunable emission with different amines is attributed to its emissive charge-transfer (CT) complexation with o-phen linkers. In certain cases this CT emission is further amplified by energy transfer from the chromophoric linker unit ndc, as evidenced by single-crystal X-ray structural characterization.