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Functionalized metal-organic framework compounds, complexes formed therefrom, and methods of preparation and use thereof

An organic framework, functionalized technology, applied in the direction of 2/12 group organic compounds without C-metal bonds, organic chemical methods, zinc organic compounds, etc.

Active Publication Date: 2019-09-10
SUN YAT SEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, among the advantages of two-photon excitation, there are few reports on dimming and white light emission based on two-photon excitation, most of which are single-component two-photon fluorescence, and few multi-component dimming utilizes the Reports of different two-photon properties

Method used

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  • Functionalized metal-organic framework compounds, complexes formed therefrom, and methods of preparation and use thereof
  • Functionalized metal-organic framework compounds, complexes formed therefrom, and methods of preparation and use thereof
  • Functionalized metal-organic framework compounds, complexes formed therefrom, and methods of preparation and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070]Example 1 Preparation of functionalized metal-organic framework compound LIFM-WZ-6

[0071] A functionalized metal-organic framework compound LIFM-WZ-6 with tetrakis(4-(3-(4-carboxyphenyl)-2,3,4-triazole)-phenyl)ethene as the main ligand , 4-4' bipyridyl as an auxiliary ligand, and zinc nitrate self-assembled.

[0072] The specific preparation process is:

[0073] Wherein, the preparation process of tetrakis(4-(3-(4-carboxyphenyl)-2,3,4-triazole)-phenyl)ethylene is:

[0074] S1. the preparation of intermediate product 4-azidobenzoic acid methyl ester:

[0075] Methyl 4-aminobenzoate (1.51 g, 10 mmol) was added to a flask containing 500 mL of deionized water. Aqueous hydrochloric acid (10% v / v) was added, and the mixture was cooled to 0° C.; aqueous sodium nitrite (828 mg, 12 mmol) was added dropwise, and the mixture was stirred for 20 min; aqueous sodium azide (1 g, 15 mmol) was added slowly, And the resulting suspension was stirred at room temperature for 3 hours; t...

Embodiment 2

[0098] Example 2 Determination of the crystal structure of the functionalized metal-organic framework compound LIFM-WZ-6

[0099] with copper target Single crystal X-ray diffraction data of LIFM-WZ-6 were collected at 50kV and 0.80mA on the Rigaku-Oxford Supernova X-ray Diffractometer system.

[0100] The structure was solved using the direct method and refined using the full matrix least squares method using the SHELXL-2014 program package. All hydrogen atoms were obtained by the theoretical hydrogenation method and refined along the anisotropic direction; 4,4'-bipyridine in LIFM-WZ-6 appeared doubly disordered, and the isor command was used to fix the frame, LIFM- The relevant crystallographic data of WZ-6 are shown in Table 1. The single crystal data have been deposited in the Cambridge Crystal Data Center (CCDC No.: 1886040). For the topology, see figure 2 .

[0101] Table 1 shows the crystallographic data of metal-organic framework complex LIFM-WZ-6

[0102]

[01...

Embodiment 3

[0106] Example 3 Measurement of Fluorescent Properties of LIFM-WZ-6

[0107] Solvent Chromogenic Effect of LIFM-WZ-6

[0108] Solvent chromogenic effect is an effective method to observe the host-guest interaction between LIFM-WZ-6 and solvent molecules. Therefore, the solvent coloration effect of LIFM-WZ-6 in solvents of different polarities (n-hexane, traditional Chinese medicine, THF, ethanol, acetonitrile and water) was verified by fluorescence spectroscopy. The results are as follows: image 3 shown.

[0109] from image 3 It can be seen from the figure that when the solvent polarity gradually increases from the low-polarity solvent n-hexane to high-polarity water, LIFM-WZ-6 exhibits a large red shift of 62nm (n-hexane: 476nm, EtOH: 502nm, H 2O: 538nm); this indicates that the low excited state S1 of LIFM-WZ-6 has a strong charge transfer state characteristic; After the formation of the transferred excited state, the fluorescence spectrum shows an obvious red shift; t...

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Abstract

The invention discloses a functionalized metal-organic framework compounds, complexes formed therefrom, and methods of preparation and use thereof, wherein the molecular formula of the functionalizedmetal-organic framework compound is C36H22N7O4Zn, and the complex is formed by self-assembling tetra(4-(3-(4-carboxyphenyl)-2,3,4-triazole)-phenyl)ethylene as the main ligand, 4-4'-bipyridine as an auxiliary ligand and zinc nitrate. A LIFM-WZ-6 has high fluorescence quantum yield and two-photon absorption cross section, and has the advantages of high emission intensity and stable luminescence performance. A large amount of small cationic dyes can be adsorbed to achieve the purpose of adjusting the luminescence properties by single-photon and two-photon excitation and realize the emission of white light. The LIFM-WZ-6 does not mercury, is non-toxic, non-volatile, easy to recycle, and environmentally friendly; the composite can adsorb different kinds of cationic dyes with different contentsto obtain light emitting complexes with different light colors and luminosity, so that the light colors of the light emitting complexes can be more easily adjusted and the light color conversion can be realized.

Description

technical field [0001] The present invention relates to the technical field of luminescent metal-organic framework materials, and more specifically, relates to a metal organic framework formed by self-assembly of tetraphenylethylene derivatives, 4-4'bipyridine as auxiliary ligands, and zinc nitrate self-assembly. Skeleton compound and its preparation method, as well as the complex formed by using the compound for dye adsorption, and its application in the field of single- and double-photon photochromic adjustment. Background technique [0002] White luminescent materials can not only meet people's daily lighting needs, but also have important applications in display and other fields. Therefore, white light-emitting materials have become a hot issue in the field of materials and have attracted people's continuous attention. White light can be obtained from materials with multiple color emissions, usually by mixing two complementary colors (blue and yellow) or three optical p...

Claims

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Application Information

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IPC IPC(8): C07F3/06C09K11/06C09B67/02C09B67/32B01J20/22B01J20/30C08G83/00
CPCB01J20/223B01J20/226C07B2200/13C07F3/003C08G83/008C09B67/0001C09B67/0075C09B67/0097C09K11/06C09K2211/188Y02B20/00
Inventor 潘梅苏成勇王政朱诚逸扶鹏雁莫钧婷李超捷
Owner SUN YAT SEN UNIV
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