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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胺响应适应性纳米空间：用于分子识别的荧光多孔配位聚合物
DOI：
10.1002/ange.201405619
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Subi J. George and Tapas Kumar Maji
中科院分区：
文献类型：
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作者：
Ritesh Haldar;Ryotaro Matsuda;Susumu Kitagawa;Subi J. George and Tapas Kumar Maji
柔性和动态多孔配位聚合物（PCP）具有由发色有机连接体组成的定义明确的纳米空间，通过非共价相互作用为多功能客体分子的封装提供了支架。因此，PCP提供了一个潜在的分子识别平台。在本文中，我们报道了一个灵活的3D超分子框架{[Zn（ndc）（o-phen）]<$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，可以容纳不同的具有选择性开启发射信号的供电子芳香胺客人。 该系统通过发射读出过程作为分子识别平台。这种与不同胺的前所未有的可调谐发射归因于其与邻菲咯啉连接体的发射电荷转移（CT）络合。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)]⋅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 witho‐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.