首页> 外文期刊>Applied Organometallic Chemistry >Assembled synthesis of luminescent mono/double-layered 2D and 3D Zn (II)-based coordination polymers tuned by flexible bis (pyridyl)propane-1,2-diamines and diverse organic dicarboxylates
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Assembled synthesis of luminescent mono/double-layered 2D and 3D Zn (II)-based coordination polymers tuned by flexible bis (pyridyl)propane-1,2-diamines and diverse organic dicarboxylates

机译:用柔性双(吡啶基)丙烷-1,2-二胺和不同的有机二羧酸酯和不同的有机二羧酸酯组装的发光单℃/双层2D和3D Zn(II)的合成的合成。基于柔性双(吡啶基)丙烷-1,2-二胺和不同的有机二羧酸盐

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摘要

Six mono/double-layered 2D and three 3D coordination polymers were synthesized by a self-assembly reaction of Zn (II) salts, organic dicarboxylic acids and L1/L2 ligands. These polymeric formulas are named as [Zn(L1)(C4H2O4)(0.5) (H2O)](n)center dot 0.5n(C4H2O4)center dot 2nH(2)O (1), [Zn-2(L2)(C4H2O4)(2)](n)center dot 2nH(2)O (2), [Zn(L1)(m-BDC)](n) (3), [Zn-2(L2)(m-BDC)(2)](n)center dot 2nH(2)O (4), [Zn-3(L1)(2)(p-BDC)(3)(H2O)(4)](n)center dot 2nH(2)O (5), [Zn-2(OH)(L2) (p-BDC)(1.5)](n) (6), [Zn-2(L1)(p-BDC)(2)](n)center dot 5nH(2)O (7), [Zn-2(L2)(p-BDC)(2)](n)center dot 3nH(2)O (8) and [Zn-2(L1)(C4H4O4)(1.5)(H2O)](n)center dot n(ClO4)center dot nH(2)O (9) [L1 = N,N '-bis (pyridin-4-ylmethyl)propane-1,2-diamine, L2 = N,N '-bis (pyridin-3-ylmethyl)propane-1,2- diamine, m-BDC2- = m-benzene dicarboxylate, p-BDC2- = p-benzene dicarboxylate]. Meanwhile, these polymers have been characterized by elemental analysis, infrared, thermogravimetry (TG), photoluminescence, powder and single-crystal X-ray diffraction. Polymers 1-6 present mono- and double (4,4)-layer motifs accomplished by L1/L2 ligands with diverse conformations and organic dicarboxylates, and the layer thickness locates in the range of 5.8-15.0 angstrom. In three 3D polymers, the L1 and L2 molecules adopt the same cis-conformations and join adjacent Zn (II) cations together with p-BDC2- or succinate, giving rise to different binodal (4,4)-c nets with (4.5(2).8(3))(4.5(3).7(2)) (7), pts (8) topology and twofold interpenetrated binodal (5,5)-c nets with (3(2).4(4).5(2).6(2))(3.4(3).5(2).6(4)) (9). Therefore, the diverse conformations of the two bis (pyridyl)-propane-1,2-diamines and the feature of different organic dicarboxylate can effectively influence the architectures of these polymers. Powder X-ray diffraction patterns demonstrate that these bulk solid polymers are pure phase. TG analyses indicate that these polymers have certain thermal stability. Luminescent investigation reveals that the emission maximum of these polymers varies from 402 to 449 nm in the solid state at room temperature. Moreover, 1, 3 and 5-8 show average luminescence lifetimes from 8.81 to 16.30 ns.
机译:通过Zn(II)盐,有机二羧酸和L1 / L2配体的自组装反应合成了六个单倍/双层2D和三维配位聚合物。这些聚合物配方名称为[Zn(L1)(C 4 H 2 O 4)(0.5)(0.5)(H 2 O)](N)中心点0.5N(C4H2O4)中心点2NH(2)O(1),[Zn-2(L2)( C4H2O4)(2)](n)中心点2NH(2)O(2),[Zn(L1)(M-BDC)](N)(3),[Zn-2(L2)(M-BDC) (2)](n)中心点2NH(2)O(4),[Zn-3(L1)(2)(P-BDC)(3)(3)(4)(4)(4))(n)中心点2nH( 2)O(5),[Zn-2(OH)(L2)(L2)(P-BDC)(1.5)](N)(6),[Zn-2(L1)(P-BDC)(2)]( n)中心点5nH(2)O(7),[Zn-2(L2)(P-BDC)(2)](n)中心点3nH(2)O(8)和[Zn-2(L1) (C4H4O4)(1.5)(H 2 O)](N)中心点N(CLO4)中心点NH(2)O(9)[L1 = N,N'-BIS(吡啶-4-基甲基)丙烷-1,2 - 二胺,L2 = N,N'-BIS(吡啶-3-基甲基)丙烷-1,2-二胺,M-BDC2- = M-苯二羧酸酯,P-BdC2- =对苯二羧酸甲酯]。同时,这些聚合物的特征在于元素分析,红外线,热重分析(Tg),光致发光,粉末和单晶X射线衍射。聚合物1-6用具有不同构象和有机二羧酸甲酸盐的L1 / L2配体的单次和双(4,4)-Layer基序,层厚度定位在5.8-15.0埃的范围内。在三个3D聚合物中,L1和L2分子采用相同的顺式构象并将相邻的Zn(II)阳离子与P-Bdc2-或琥珀酸盐加入,产生不同的二烯(4,4)-C网(4.5(4.5) 2).8(3))(4.5(3).7(2))(7),PTS(8)拓扑和双重渗透二十二醛(5,5)-C网(3(2)。 ).5(2).6(2))(3.4(3).5(2).6(4))(9)。因此,两个双(吡啶基) - 丙烷-1,2-二胺和不同有机二羧酸甲酯的特征的不同构象可以有效地影响这些聚合物的架构。粉末X射线衍射图表明这些本体固体聚合物是纯相。 Tg分析表明这些聚合物具有一定的热稳定性。发光调查显示,这些聚合物的发射最大值在室温下在固态中的402至449nm变化。此外,1,3和5-8显示了8.81至16.30 ns的平均发光寿命。

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