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Two-dimensional cadmium coordination polymer with conjugated pi bond-containing aromatic carboxylic acid 3-quinolinedicarboxylic acid ligands and synthesis method for two-dimensional cadmium coordination polymer

A technology of cadmium coordination polymer and quinoline dicarboxylic acid, which is applied in the field of synthesis of two-dimensional cadmium coordination polymer, can solve the problems of short fluorescence lifetime, poor monochromaticity and high synthesis cost, and achieve good monochromaticity and luminescence Effects of improved life and low synthesis cost

Inactive Publication Date: 2014-06-04
HARBIN INST OF TECH
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Problems solved by technology

[0003] The purpose of the present invention is to provide the aromatic carboxylic acid 3-quinoline dicarboxylic acid ligand di Vitamin cadmium coordination polymer and its synthesis method

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  • Two-dimensional cadmium coordination polymer with conjugated pi bond-containing aromatic carboxylic acid 3-quinolinedicarboxylic acid ligands and synthesis method for two-dimensional cadmium coordination polymer
  • Two-dimensional cadmium coordination polymer with conjugated pi bond-containing aromatic carboxylic acid 3-quinolinedicarboxylic acid ligands and synthesis method for two-dimensional cadmium coordination polymer
  • Two-dimensional cadmium coordination polymer with conjugated pi bond-containing aromatic carboxylic acid 3-quinolinedicarboxylic acid ligands and synthesis method for two-dimensional cadmium coordination polymer

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specific Embodiment approach 1

[0023] Specific embodiment one: the two-dimensional cadmium coordination polymer of the aromatic carboxylic acid 3-quinoline dicarboxylic acid ligand containing the conjugated π bond of the present embodiment, the molecular formula is [Cd(C 10 h 6 NO 2 ) 2 ] n , whose structural formula is: Wherein said n is a positive integer.

[0024] In this embodiment, the molecular formula of the cadmium coordination polymer with a two-dimensional structure is [Cd(C 10 h 6 NO 2 ) 2 ] n , containing a crystallographically independent cadmium ion and two 3-quinoline dicarboxylic acid ligands in its asymmetric structural unit. The central metal cadmium ion presents a six-coordination state, and the six coordination atoms come from the O1, O2, O3, O4, N1 and N2 atoms in two different 3-quinoline dicarboxylic acid ligands, forming a slightly twisted [CdO 4 N 2 ] in the octahedral configuration. 3-Carboxyquinoline has only one coordination mode in the synthesized coordination poly...

specific Embodiment approach 2

[0031]Embodiment 2: The difference between this embodiment and Embodiment 1 is that the polymer contains a crystallographically independent central metal cadmium ion and two 3-quinoline dicarboxylic acid ligands, and two adjacent central metal ions The cadmium ions are connected through a nitrogen atom N1 in a 3-quinoline dicarboxylic acid ligand and two carboxylic acid oxygen atoms O1, O4 to form a one-dimensional chain structure; the one-dimensional chain structure is connected through another 3-quinoline The nitrogen atom N2 in the dicarboxylic acid ligand and the two carboxylic acid oxygen atoms O2 and O3 connect two adjacent metal cadmium ions to form a two-dimensional layered structure. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0032] Specific embodiment three: the synthesis method of the aromatic carboxylic acid 3-quinoline dicarboxylic acid ligand two-dimensional cadmium coordination polymer containing the conjugated π bond of the present embodiment is carried out according to the following steps:

[0033] Put cadmium nitrate tetrahydrate and 3-quinoline dicarboxylic acid in a molar ratio of 1: (1~4) into a polytetrafluoroethylene-lined stainless steel reactor, then add distilled water to adjust the pH value to 2~7, room temperature Stir and mix evenly on a magnetic stirrer to obtain a solution; react at 100-180°C for 72-168 hours, and cool to room temperature after the reaction to obtain block crystals, which are aromatic carboxylic acid 3-quinoline di A two-dimensional cadmium coordination polymer with formic acid ligands; wherein, the volume-to-mass ratio of distilled water to cadmium nitrate tetrahydrate is 1 mL: (0.0019-0.0077) g.

[0034] This embodiment includes the following beneficial effe...

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Abstract

The invention discloses a two-dimensional cadmium coordination polymer with conjugated pi bond-containing aromatic carboxylic acid 3-quinolinedicarboxylic acid ligands and a synthesis method for the two-dimensional cadmium coordination polymer, relates to a synthesis method for a two-dimensional cadmium coordination polymer, and aims to solve the technical problems of high synthesis cost, poor monochromaticity and short fluorescence lifetime of a conventional blue-fluorescence organic luminous material. The molecular formula of the two-dimensional cadmium coordination polymer with the conjugated pi bond-containing aromatic carboxylic acid 3-quinolinedicarboxylic acid ligands is [Cd(C10H6NO2)2]n. According to the synthesis method, a hydrothermal synthesis method is used for preparing the two-dimensional cadmium coordination polymer from the conjugated pi bond-containing aromatic carboxylic acid 3-quinolinedicarboxylic acid ligands and cadmium nitrate tetrahydrate. The two-dimensional cadmium coordination polymer can be determined to be clearly blue-fluorescent from a CIE chromaticity diagram, is pure in color and high in monochromaticity, and can be used as a metal organic blue luminous material. The two-dimensional cadmium coordination polymer and the synthesis method are applied to the field of preparation of organic luminous materials.

Description

technical field [0001] The invention relates to a synthesis method of a two-dimensional cadmium coordination polymer. Background technique [0002] Metal-organic coordination polymers have attracted extensive attention of researchers due to their potential applications in the fields of gas adsorption, molecular storage, nonlinear optics, luminescent materials, and electrical conduction. The properties of metal-organic coordination polymers are between organic matter and inorganic matter. They not only have the advantages of high fluorescence quantum efficiency of organic matter, but also have the characteristics of good stability of inorganic matter. They are considered to be the most promising type of organic electrical Luminescent materials. In order to realize full-color display in organic electroluminescent devices (OLEDs), materials that emit red, blue, and green light are essential. Compared with red light and green light materials with good performance, blue light m...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F3/08C09K11/06
Inventor 范瑞清高嵩杨玉林魏立国邢凯
Owner HARBIN INST OF TECH
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