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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Tetraarylpyrrolo[3,2-b]pyrroles as versatile and responsive fluorescent linkers in metal-organic frameworks
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Tetraarylpyrrolo[3,2-b]pyrroles as versatile and responsive fluorescent linkers in metal-organic frameworks

机译：Tetraarylpyrrolo [3,2-B]涂料作为金属有机框架的多功能和响应荧光接头

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摘要

The first examples of crystalline coordination polymers containing the tetraarylpyrrolo[3,2-b]pyrrole (TPP) fluorophore are presented. We have prepared three new TPP ligands L1, H2L2 and H2L3, containing nitrile, carboxylate and mixed imidazole-carboxylate donor functionality, respectively. The ligands themselves each show significant fluorescence in the solution phase, with the nitrile species exhibiting solvatofluorochromism and the two carboxylate-containing compounds exhibiting concentration-dependent emission colour suggesting aggregation processes in solution. Three 3-dimensional polymeric structures are then presented. The compound poly-[AgL1(2)]SbF6 center dot 3THF center dot 2H(2)O 1 is an eightfold-interpenetrated diamondoid material, while poly-[Zn4O(L2)(3)]center dot 20DMA center dot 10H(2)O 2 is a porous Metal-Organic Framework with pcu topology, and both 1 and 2 show notable luminescence in the solid state. Complex 2 readily undergoes guest exchange accompanied by a reversible switching in emission colour with no change in chemical structure. While complex poly-[CdL3]center dot 2.5DMA center dot 3.5H(2)O 3 is non-emissive, it displays a twofold interpenetrated pts topology with hexagonal symmetry and an extremely long hexagonal pitch of 100.3 angstrom, and shows an impressive 22 wt% CO2 uptake capacity at 278 K and 1 bar.
机译：呈列含有四芳吡咯烷[3,2-B]吡咯（TPP）荧光团的结晶配位聚合物的第一个实例。我们制备了三种新的TPP配体L1，H 2L 2和H 2L3，分别含有腈，羧酸盐和混合咪唑 - 羧酸酯官能团。配体本身各自在溶液相中显示出显着的荧光，丁腈物种具有溶于溶于溶解的氟色溶解度和两种含羧酸盐的化合物，其表现出浓度依赖性发射颜色的溶液中的聚集过程。然后呈现三种三维聚合物结构。化合物聚 - [AgL1（2）] SBF6中心点3THF中心点2H（2）O 1是八十次互连的表晶体材料，而Poly-[Zn4O（L2）（3）]中心点20dma中心点10h（2 ）O 2是具有PCU拓扑的多孔金属 - 有机框架，1和2显示出固态的显着发光。复杂的2容易经历客户交换，伴随着可逆切换的发光颜色，没有变化的化学结构。虽然复杂的Poly-[CDL3]中心点2.5DMA中心点3.5H（2）O 3是非发光的，但它显示了一个双重互向的PTS拓扑，六边形对称性和极长的六边形间距为100.3埃，显示出令人印象深刻的22 WT％CO2摄取容量为278 k和1巴。

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