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Lanthanum-series porous coordination polymers based on C2v symmetrical ligands, and synthesis method and application thereof

A technology of coordination polymers and ligands, applied in the field of lanthanide porous coordination polymers based on C2v symmetric ligands and its synthesis, to achieve the effect of simple operation

Active Publication Date: 2016-09-14
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the systematic design and synthesis of Ln-PCPs by gradually increasing conjugation has not been reported

Method used

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  • Lanthanum-series porous coordination polymers based on C2v symmetrical ligands, and synthesis method and application thereof
  • Lanthanum-series porous coordination polymers based on C2v symmetrical ligands, and synthesis method and application thereof
  • Lanthanum-series porous coordination polymers based on C2v symmetrical ligands, and synthesis method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Example 1 Three kinds of C 2v Synthesis and Characterization of Symmetric Rigid Ligands

[0058] Bi-H 3 L can be purchased directly, Te-H 3 The synthesis method of L refers to literature (Duan, J.G.; Higuchi, M.; Kitagawa, S.Inorg.Chem.2015,54,1645.), Qu-H 3 For the synthetic route of L, see figure 2 , for each characteristic data see Figure 3-5 .

Embodiment 2

[0059] Example 2 is based on C 2v Synthesis and Characterization of Lanthanide Porous Coordination Polymers with Symmetrical Ligands

[0060] (1) Ln(Bi-L)(Ln 3+ =Eu 3+ ,Tb 3+ and La 3+ ) synthesis and characterization

[0061] The synthesis of the three compounds is the same except for the metal salt. Therefore only the synthesis of Eu(Bi-L) is discussed in detail. Eu(NO 3 ) 3 ·6H 2 O (12mg) and Bi-H 3 L (5mg) was added to N,N-dimethylformamide (DMF) / water=1:1 (1mL) solution, stirred for 20 minutes, and then transferred to a 4mL polytetrafluoroethylene-lined autoclave at 80°C It was heated under low temperature for 48 hours, and cooled to room temperature to obtain colorless blocky crystals. Yield 65% (based on ligand).

[0062] C 15 h 11 EuO 8 The elemental analysis calculated value (%) is: C, 38.23; H, 2.35; The actual result is: C, 37.96; H, 2.63; The productive rate of Tb (Bi-L) is 61%, C 15 h 11 TbO 8 The element analysis calculated value (%) is: C, 37.6...

Embodiment 3

[0075] Example 3 is based on C 2v Structural Analysis of Lanthanide Porous Coordination Polymers with Symmetrical Ligands

[0076] With Ln(NO 3 ) 3 ·3H 2 O(Ln:Eu 3+ ,Tb 3+ and La 3+ ) and three C 2v Ligand (Bi-H 3 L,Te-H 3 L and Qu-H3L) synthesized nine bulk crystals, namely Eu(Bi-L), Tb(Bi-L), La(Bi-L), NTU-5 to NTU-10, by solvothermal method. Single crystal diffraction proves that the molecular structure of these porous coordination polymers (PCPs) can be [Ln(L)(H 2 O) 2 ] · Guest to represent. We now discuss the structural features of seven of these crystals, six of which are monoclinic C 2 / c space group, one is monoclinic I 2 / a space group (see Table 1). All bond lengths and angles, especially the Ln-O and O-Ln-O bonds, are within reasonable limits. Each asymmetric unit cell includes a lanthanide metal atom, two coordinated water molecules and a ligand. Each metal atom forms a dodecahedron with four chelating oxygen atoms, three bridging oxygen atoms and t...

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Abstract

The invention belongs to the field of material preparation, and mainly relates to lanthanum-series porous coordination polymers based on C2v symmetrical ligands, and a synthesis method and an application thereof. A series of fluorescent porous coordination polymers based on the C2v symmetrical ligands with gradually increased conjugacy are designed and synthesized, and the synthesis method is simple, convenient and easy to implement. The prepared novel lanthanum-series porous coordination polymers have good fluorescent properties; by adjusting the ligands and lanthanide elements, chrominance between pink and blue light can be adjusted; based on relatively high quenching coefficient, the polymers can be used for molecular recognition. Single crystal X-ray diffraction reveals that the pore size and the pore volume are controlled by the system, and the prepared porous coordination polymers have potential applications in highly-effective adsorption and release of iodine.

Description

technical field [0001] The invention belongs to the field of material preparation, in particular to the design, preparation and application of lanthanide porous coordination polymers, especially based on C 2v Lanthanide porous coordination polymer with symmetrical ligands and its synthesis method and application. Background technique [0002] In recent years, porous coordination polymers formed by linking organic ligands and metal ions (or metal clusters) have developed rapidly in many application fields, such as gas adsorption and separation, stereoselective catalysis, proton conduction and Chemical sensing and other fields (Sato, H.; Kosaka, W.; Matsuda, R.; Hori, A.; Hijikata, Y.; Belosludov, R.V.; Sakaki, S.; Takata, M.; Kitagawa, S. Science 2014, 343, 167; Nugent, P.; Belmabkhout, Y.; Burd, S.D.; Cairns, A.J.; Luebke, R.; ; Eddaoudi, M.; Zaworotko, M.J. Nature 2013, 495, 80; Furukawa, H.; Cordova, K.E.; O'Keeffe, M.; Yaghi, O.M. Science 2013, 341, 974.). This is main...

Claims

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Application Information

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IPC IPC(8): C07F5/00C07C63/331G01N21/64B01J20/30B01J20/22
CPCB01J20/226G01N21/6428C07C63/331C07F5/003G01N2021/6432
Inventor 段金贵王海军金万勤
Owner NANJING UNIV OF TECH
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