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Three-dimensional indium coordination polymer containing mixed ligands and synthesis method and application thereof

A technology of coordination polymers and mixed ligands, which is applied in the fields of compounds containing group 3/13 elements of the periodic table, chemical instruments and methods, organic chemistry, etc., and can solve the problem of poor thermal stability and the synthesis of blue fluorescent organic light-emitting materials High thermal stability, broad application prospects, and stable blue light-emitting performance are achieved due to high cost issues

Inactive Publication Date: 2014-06-18
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the technical problems of high synthesis cost and poor thermal stability of existing blue fluorescent organic luminescent materials, and provides a three-dimensional indium coordination polymer containing mixed ligands and its synthesis method and application

Method used

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  • Three-dimensional indium coordination polymer containing mixed ligands and synthesis method and application thereof
  • Three-dimensional indium coordination polymer containing mixed ligands and synthesis method and application thereof
  • Three-dimensional indium coordination polymer containing mixed ligands and synthesis method and application thereof

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specific Embodiment approach 1

[0020] Embodiment 1: The molecular formula of a three-dimensional indium coordination polymer containing mixed ligands in this embodiment is C 66 h 42 In 8 N 6 o 45 , contains two central metal indium ions, three 2,6-pyridinedicarboxylic acid ligands, three terephthalic acid ligands, three hydroxyl groups, and two free water molecules in its basic structural unit; among them, The central metal indium ion has two coordination modes, one is the indium ion In1 and the nitrogen atom N1 in one 2,6-pyridinedicarboxylic acid ligand, and the four oxygen atoms in the three 2,6-pyridinedicarboxylic acid ligands Atoms O1, O1#, O3, O4, an oxygen atom O5 in a terephthalic acid, and a hydroxyl oxygen atom O7 coordinate to form a bond, showing a seven-coordination slightly twisted pentagonal bipyramidal configuration; the other is indium The ion In2 is bonded and coordinated with three carboxyl oxygen atoms O6, O6#3, O6#4 of terephthalic acid, and three hydroxyl oxygen atoms O7, O7#3, O7...

specific Embodiment approach 2

[0022] Specific embodiment 2: The synthesis method of a three-dimensional indium coordination polymer containing mixed ligands in this embodiment is carried out according to the following steps:

[0023] Put 2,6-pyridinedicarboxylic acid, terephthalic acid and indium nitrate in 5-10mL of distilled water, stir at room temperature until evenly mixed, adjust the pH value of the system to 2-5, and put it into the liner as polytetrafluoroethylene In a stainless steel reaction kettle of vinyl fluoride, react at a temperature of 160-180°C for 3-5 days and then cool down to room temperature to obtain a yellow hexagonal crystal, which is a three-dimensional indium coordination polymer containing mixed ligands; among them, The molar ratio of 2,6-pyridinedicarboxylic acid, phthalic acid and indium nitrate is 1:1~3:1~5.

[0024] This embodiment includes the following beneficial effects:

[0025] 1. The yield of the three-dimensional structure indium coordination polymer prepared by the p...

specific Embodiment approach 3

[0029] Embodiment 3: This embodiment is different from Embodiment 2 in that: the volume of the solvent distilled water is 6mL. Other steps and parameters are the same as in the second embodiment.

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Abstract

The invention discloses a three-dimensional indium coordination polymer containing mixed ligands and a synthesis method and application thereof, relating to three-dimensional indium coordination polymers and synthesis methods and application thereof. The three-dimensional indium coordination polymer containing the mixed ligands is used for solving the technical problem of the existing blue fluorescent organic light-emitting materials that the synthesis cost is high and the thermal stability is poor. The three-dimensional indium coordination polymer containing the mixed ligands has a molecular formula of C66H42In8N6O45 and a structural formula shown in a drawing. The synthesis method disclosed by the invention comprises the steps of putting 2,6-pyridinedicarboxylic acid, terephthalic acid and indium nitrate into distilled water, stirring at room temperature until 2,6-pyridinedicarboxylic acid, terephthalic acid and indium nitrate are mixed uniformly, adjusting the pH value of a system, then, putting the system into a stainless-steel reactor lined with polytetrafluoroethylene, reacting, and then, cooling to room temperature, thereby obtaining a yellow hexagonal crystal, namely the three-dimensional indium coordination polymer containing the mixed ligands. The three-dimensional indium coordination polymer containing the mixed ligands, disclosed by the invention, can serve as a metal organic blue light-emitting material and is applied to the field of preparation of organic light-emitting materials.

Description

technical field [0001] The invention relates to a three-dimensional indium coordination polymer and its synthesis method and application. Background technique [0002] In recent years, the synthesis and performance exploration of stable blue light-emitting materials has been one of the hotspots in the field of light-emitting materials. Coordination polymers are metal-organic framework crystal materials containing periodic network structures formed by self-assembly of metal ions and organic ligands. They combine the characteristics of both metal ions and organic ligands, and have good thermal stability and luminescence. performance. When the organic ligands coordinate with metal ions, the position of the fluorescence emission peak will change greatly. By changing metal ions, ligands and synthesis conditions, the luminescent range can be regulated, so as to obtain new luminescent materials suitable for the needs. The light-emitting coordination polymers of the third main gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F5/00C09K11/06
Inventor 范瑞清王新铭杨玉林曹文武杨彬
Owner HARBIN INST OF TECH
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