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Luminescent two- and three-dimensional zinc coordination polymers containing isomers of phenylenediacetate and a kinked tethering organodiimine

机译:发光的二维和三维锌配位聚合物,其中包含苯二乙酸酯的异构体和纽结的有机二亚胺

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摘要

Hydrothermal synthesis has afforded a series of zinc-containing coordination polymers incorporating the kinked organodiimine 4,4'-dipyridylamine (dpa) and phenylenedi acetate (phda) isomers. {[Zn(1,4-phda)(dpa)] center dot H2O}(infinity) (1) manifests a two-dimensional (2D) corrugated layer morphology. While both {[Zn(1,2-phda)(dpa)]center dot 2H(2)O)(infinity) (2) and [Zn(I,3-phda)(dpa)](infinity) (3) contain three-dimensional 4-fold interpenetrated coordination polymer networks, 2 possesses the SrAl2 structure type (sra, 4(2) 6(3)8 topology) but the acentric material 3 adopts the diamond structure type (dia, 6(6) topology). The varying morphologies thus reveal a significant structure-directing effect of the position of the acetate groups during self-assembly of these coordination polymers. Hydrogen-bonding mechanisms imparted by the central amine group of the dpa ligand provide ancillary supramolecular structure-directing effects in all three cases. All three materials undergo blue-violet luminescence upon irradiation with ultraviolet light.
机译:水热合成提供了一系列含锌的配位聚合物,其中掺入了扭结的有机二亚胺4,4'-二吡啶胺(dpa)和乙酸苯二酯(phda)异构体。 {[Zn(1,4-phda)(dpa)]中心点H2O}(无穷大)(1)表现出二维(2D)波纹层形态。而[[Zn(1,2-phda)(dpa)]中心点2H(2)O)(无穷大)(2)和[Zn(I,3-phda)(dpa)]无穷大(3)包含三维4倍互穿配位聚合物网络,2具有SrAl2结构类型(sra,4(2)6(3)8拓扑),而无心材料3采用菱形结构类型(dia,6(6)拓扑) )。因此,变化的形态揭示了在这些配位聚合物的自组装过程中,乙酸酯基团的位置具有明显的结构指导作用。在所有这三种情况下,dpa配体的中央胺基团赋予的氢键作用机制可提供辅助的超分子结构导向作用。当用紫外线照射时,所有三种材料都经历蓝紫色发光。

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