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Multi-terpyridyl metal organic ligand compound, five-membered flower ring-shaped supramolecule assembled thereby, and preparation

A ligand compound, metal-organic technology, applied in the field of new supramolecular synthesis, can solve the problems of no five-membered symmetrical flower-like supramolecular report, not very strict conservation, etc.

Active Publication Date: 2020-11-03
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are very few structures with an angle of 108 degrees in the chemical structure formula. In addition, the general ligands are flexible so that the angle can be adjusted. Therefore, when the ligands construct supramolecules, the direction conservation is not very strict.
[0005] In the prior art, there are no reports of flower-like supramolecules with five-membered symmetry

Method used

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  • Multi-terpyridyl metal organic ligand compound, five-membered flower ring-shaped supramolecule assembled thereby, and preparation
  • Multi-terpyridyl metal organic ligand compound, five-membered flower ring-shaped supramolecule assembled thereby, and preparation
  • Multi-terpyridyl metal organic ligand compound, five-membered flower ring-shaped supramolecule assembled thereby, and preparation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] 2,7-diboronate naphthalene (S2):

[0090]

[0091] 2,7-dibromonaphthalene (500.0mg, 1.75mmol), biboronic acid pinacol ester (1.1g, 4.2mmol), potassium acetate (1.4g, 14.26mmol), catalyst [1,1'-bis(di Phenylphosphine)ferrocene]palladium dichloride (154.0mg, 0.21mmol), THF (15ml) were added into a 50mL round bottom flask, under nitrogen protection, heated and stirred at 85°C for 24 hours. After the reaction was completed, it was cooled to room temperature, extracted with water and dichloromethane, and the organic phase was collected and evaporated under reduced pressure to remove the solvent. Add a small amount of methanol and a large amount of petroleum ether for recrystallization, collect the liquid by filtration under reduced pressure, remove the solvent by rotary evaporation, add a small amount of methanol and then add a large amount of water, collect the solid by filtration under reduced pressure, and dry to obtain 565.0 mg of the product with a yield of 85%. NMR...

Embodiment 2

[0125] The supramolecule (five-membered rosette-shaped metal organic supramolecule) prepared in Example 1 was gelled. The five-member rosette-shaped organometallic supramolecule was dissolved in DMF at a concentration of 0.1 mmol / ml, and then left for 3-5 days to obtain a gel. For pictures of the gels described, see Figure 11 , for SEM characterization of the gel see Figure 12 . Figure 11 The medium glass bottle is inverted and the contents do not flow, indicating that it has successfully gelled; Figure 12 It shows that the molecules in the colloid are cross-linked to form a three-dimensional network structure.

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Abstract

The invention discloses synthesis method of a five-membered flower cyclic supramolecule based on terpyridyl metal coordination. The supermolecule is a giant five-membered flower ring-shaped supermolecule formed by self-driving a ligand containing a plurality of terpyridyl and metal ruthenium and transition metal ions in a solvent, wherein the ligand and the transition metal can accurately react togenerate a single pentamer product without generation of other byproducts; then structural characterization and molecular weight determination are carried out on the ligand and a final assembly product through nuclear magnetism, mass spectrometry, scanning electron microscopy and other tests. The supermolecule has large molecular weight and good solubility, the molecular structure has symmetry and aesthetic properties, and gelation can be realized.

Description

technical field [0001] The invention relates to a synthesis method of a five-membered rosette-shaped supramolecule, in particular to a multi-terpyridine metal-organic ligand compound and a five-membered rosette-shaped supramolecule formed by the ligand and metal ions through a self-device and its The preparation method belongs to the field of novel supramolecular synthesis. Background technique [0002] In supramolecular chemistry, metal-ligand coordination plays an important role in the construction of supramolecules. Coordination-driven self-assembly between ligands and metal ions can generate complex 2D, 3D, and infinite organometallic supramolecular structures whose complexity and functionality can be enhanced. Coordination-driven self-assembled metal-organic supramolecules have been extensively reported in the past three decades, and nitrogen-containing organic ligands account for most of the supramolecular assemblies in this field, ranging from monodentate, bidentate ...

Claims

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Application Information

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IPC IPC(8): C07F15/00C08G83/00C08J3/11C08L87/00
CPCC07F15/0053C08G83/008C08J3/096C08J3/11C08J2387/00
Inventor 王平山曹佳楠陈名钊
Owner CENT SOUTH UNIV
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