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Chiral coordination polymer containing trinuclear cadmium cluster as well as preparation method and application of chiral coordination polymer

A coordination polymer, chirality technology, applied in chemical instruments and methods, thermometers with physical/chemical changes, measuring devices, etc., can solve the problems of high raw material cost, less development, short fluorescence lifetime, etc., and achieve pure color. , the effect of key stability

Inactive Publication Date: 2016-02-03
HARBIN INST OF TECH
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  • Description
  • Claims
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems that existing thermofluorochromic materials have less product development, high cost of raw materials, poor monochromaticity and short fluorescence life of the prepared thermofluorochromic materials, and provide a trinuclear cadmium-containing Cluster chiral coordination polymer and its preparation method and application

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  • Chiral coordination polymer containing trinuclear cadmium cluster as well as preparation method and application of chiral coordination polymer
  • Chiral coordination polymer containing trinuclear cadmium cluster as well as preparation method and application of chiral coordination polymer
  • Chiral coordination polymer containing trinuclear cadmium cluster as well as preparation method and application of chiral coordination polymer

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specific Embodiment approach 1

[0034] Specific embodiment one: the present embodiment is a chiral coordination polymer containing trinuclear cadmium clusters, the molecular formula of which is {[Cd 3 (C 15 h 7 o 7 ) 2 (C 10 h 8 N 2 ) 2 ]·H 2 O} n , whose structural formula is:

[0035] Wherein, the n is a positive integer; the occupancy of the O6, O7, O13, O14, O6A, O7A, O13A and O14A in the basic structural unit of the chiral coordination polymer containing trinuclear cadmium clusters is equal to is 0.5.

[0036] In this embodiment, the adjacent central metal Cd2 and Cd1 in a chiral coordination polymer containing trinuclear cadmium clusters are formed by two 3-(2',3'-dicarboxyphenoxy)benzoic acid ligands. The carboxyl oxygen atoms O2 and O11 are connected, and the adjacent central metal Cd1 and Cd2A are connected through the carboxyl oxygen atoms O3 and O9 in the two 3-(2′,3′-dicarboxyphenoxy)benzoic acid ligands connected, thus, three adjacent central metal cadmiums form a trinuclear secondar...

specific Embodiment approach 2

[0039] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the basic structural unit of the chiral coordination polymer containing trinuclear cadmium clusters contains three central Cd 2+ ions, two 3-(2′,3′-dicarboxyphenoxy)benzoic acid ligands, two 2,2′-bipyridyl ligands and a free water molecule;

[0040] Among them, the three centers Cd 2+ The ions are: central metal Cd2, central metal Cd1 and central metal Cd2A; the coordination and bonding methods are as follows:

[0041] Central metal Cd2 and two oxygen atoms O1 and O2 in a 3-(2′,3′-dicarboxyphenoxy)benzoic acid ligand, another 3-(2′,3′-dicarboxyphenoxy ) two oxygen atoms O10, O11 in the benzoic acid ligand, one oxygen atom O6A in the third 3-(2′,3′-dicarboxyphenoxy) benzoic acid ligand, one 2,2′- The nitrogen atoms N1 and N2 in the bipyridyl ligand coordinate to form a bond;

[0042] The central metal Cd1 coordinates with the six oxygen atoms O2, O3, O9, O10, O7A and O14A in the four 3-(2',3...

specific Embodiment approach 3

[0045] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the three centers Cd 2+ The ions present the seven-coordinate single-cap octahedral configuration, the six-coordinate octahedral configuration and the seven-coordinate single-cap octahedral configuration, respectively. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a chiral coordination polymer containing a trinuclear cadmium cluster as well as a preparation method and application of the chiral coordination polymer, relates to a chiral coordination polymer as well as a preparation method and application of the chiral coordination polymer and aims at solving the problems that the existing fluorescent thermochromic material is low in product development quantity and high in adopted raw material cost and the prepared fluorescent thermochromic material is poor in monochromaticity and short in fluorescent lifetime. The polymer has the molecular formula as follows:{[Cd3(C15H7O7)2(C10H8N2)2].H2O}n. The preparation method comprises the steps of adding a 3-(2',3'-dicarboxylphenoxyl)benzoic acid ligand, a 2,2'-bipyridine ligand and cadmium nitrate into a solvent; regulating the pH value; and carrying out hydrothermal reaction to obtain the chiral coordination polymer containing the trinuclear cadmium cluster. The chiral coordination polymer containing the trinuclear cadmium cluster are used as the fluorescent thermochromic material to be applied to temperature sensors and temperature-sensitive materials. The preparation method of the chiral coordination polymer containing the trinuclear cadmium cluster can be obtained.

Description

technical field [0001] The invention relates to a chiral coordination polymer, a preparation method and application. Background technique [0002] Chiral solid materials have attracted more and more attention due to their great potential applications in enantioselective separation, heterogeneous asymmetric synthesis, nonlinear optics and magnetism. The usual method for preparing chiral compounds is to use chiral molecules as basic linking units or as auxiliary ligands. However, the synthesis of chiral compounds from achiral precursors has attracted more research enthusiasm due to the limitation of chiral sources and the cost of chiral ligands. Thermofluorochromic materials refer to functional materials whose visible absorption spectrum changes when some compounds or mixtures are heated or cooled. It has the characteristic that the color changes with temperature. The temperature at which the color changes occurs is called the color change temperature. This thermal memory fu...

Claims

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Application Information

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IPC IPC(8): C08G83/00C09K9/02G01K11/20
Inventor 范瑞清邢凯宋阳高嵩杜玺杨玉林
Owner HARBIN INST OF TECH
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