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Lead coordination polymer as well as preparation method and application thereof

A coordination polymer and coordination technology, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of poor thermal stability, high cost, low yield, etc., and achieve the effect of good performance, low cost, and simple process

Active Publication Date: 2019-03-01
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a lead coordination polymer and its preparation method and application, which overcomes the problems of high cost, poor thermal stability and low yield of existing fluorescent coordination polymers

Method used

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  • Lead coordination polymer as well as preparation method and application thereof
  • Lead coordination polymer as well as preparation method and application thereof
  • Lead coordination polymer as well as preparation method and application thereof

Examples

Experimental program
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Embodiment 1

[0032] A preparation method of lead coordination polymer, comprising the following steps:

[0033] 1) Take 0.1 mmol of (4,4'-(2,1,3-benzothiadiazole-4,7-diyl)-dibenzoic acid) ligand, slowly add nitric acid dropwise in the ligand, so that Its pH value is 4, and then the adjusted ligand is dissolved in 10mL N,N-dimethylformamide solution to prepare a mixed solution, and the mixed solution is moved into the reaction kettle; 0.2mmol lead nitrate is weighed and added to in the mixed solution;

[0034] 2) Seal the reaction kettle, treat it at a constant temperature at 120°C for 48 hours, and then slowly cool it down to room temperature;

[0035] 3) Then filter the solution and wash with N, N-dimethylformamide solution to obtain yellow needle-like crystals, which are lead coordination polymers.

[0036] Generally, a polytetrafluoroethylene-lined hydrothermal reactor with a volume of 20mL is used.

Embodiment 2

[0038] 1) Take 0.2 mmol of (4,4'-(2,1,3-benzothiadiazole-4,7-diyl)-dibenzoic acid) ligand, slowly add nitric acid dropwise to the ligand, so that Its pH value is 4, and then the adjusted ligand is dissolved in 20mL N,N-dimethylformamide solution to prepare a mixed solution, and the mixed solution is moved into the reaction kettle; 0.4mmol lead nitrate is weighed and added to in the mixed solution;

[0039] 2) Seal the reaction kettle, treat it at a constant temperature at 120°C for 48 hours, and then slowly cool it down to room temperature;

[0040] 3) Then filter the solution and wash with N, N-dimethylformamide solution to obtain yellow needle-like crystals, which are lead coordination polymers.

Embodiment 1～2

[0041] Examples 1-2 utilize (4,4'-(2,1,3-benzothiadiazole-4,7-diyl)-dibenzoic acid) as ligand and lead nitrate to obtain lead by hydrothermal method Coordination polymer, the appearance is yellow needle-like crystal, tasteless, insoluble in organic solvents and water. The method has the advantages of simple process, low cost, good repeatability and the like.

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Abstract

The invention discloses a lead coordination polymer as well as a preparation method and application thereof and belongs to the technical field of coordination compound preparation. The lead coordination polymer is prepared by taking (4,4'-(2,1,3-benzothiadiazole-4,7-diyl)-dibenzoic acid) as a ligand and enabling the ligand to react with soluble salt of Pb<2+>; a chemical formula of the lead coordination polymer is as follows: [Pb(H2L)(DMF)]n; a repeating unit contains one Pb<2+>, one (4,4'-(2,1,3-benzothiadiazole-4,7-diyl)-dibenzoic acid) anion and one coordinated DMF (Dimethyl Formamide) molecule. An experiment result shows that the lead coordination polymer prepared by the method has the advantages of good fluorescence performance and good thermal stability, and has important applicationvalue in the fields including color displays, fluorescence labels and the like.

Description

technical field [0001] The invention belongs to the technical field of complex preparation, and in particular relates to a lead coordination polymer and its preparation method and application. Background technique [0002] There are many kinds of traditional organic fluorescent light-emitting materials. Most of them have conjugated heterocycles and various chromophores. length, thereby changing the photoelectric properties of the compound. Such as oxadiazole and its derivatives, triazole and its derivatives, rhodamine and its derivatives, coumarin derivatives, 1,8-naphthoimide derivatives, pyrazoline derivatives , Triphenylamine derivatives, porphyrin compounds, carbazole, pyrazine, thiazole derivatives, perylene derivatives, etc. They are widely used in optical electronic devices, DNA diagnostics, photochemical sensors, dyes, fluorescent whitening agents, fluorescent coatings, laser dyes, organic electroluminescent devices (ELDs), etc. However, small molecule luminescent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00C09K11/06
CPCC08G83/008C09K11/06C09K2211/188
Inventor 殷政王策马养民余欣雨
Owner SHAANXI UNIV OF SCI & TECH
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