CN111039964A - Tetrahedral cage-like structure complex and preparation method thereof - Google Patents

Tetrahedral cage-like structure complex and preparation method thereof Download PDF

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CN111039964A
CN111039964A CN201811205540.8A CN201811205540A CN111039964A CN 111039964 A CN111039964 A CN 111039964A CN 201811205540 A CN201811205540 A CN 201811205540A CN 111039964 A CN111039964 A CN 111039964A
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complex
preparation
reaction
triazine
cage
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吴文源
蒋鹏
万嵘
付小换
陈枳帆
方云聪
唐铁桓
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Nanjing Tech University
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Abstract

A tetrahedral cage structure complex (I) has the following chemical formula:

Description

Tetrahedral cage-like structure complex and preparation method thereof
Technical Field
The invention belongs to the field of supermolecule metal complexes, and particularly relates to preparation and performance characterization of a tetrahedral cage complex.
Background
The supermolecule metal cage complex is a complex formed by metal ions and secondary components through molecular engineering. The structure of various coordinated supermolecules constructed by molecular engineering is characterized in that a certain space is arranged in the supermolecules, and guest molecules can be accommodated in the supermolecules, so that the supermolecules can be used as molecular containers, reactors and inductors. The method has important application value in the fields of molecular recognition and exchange, selective catalysis, chiral separation, luminescent probes, molecular machines, molecular devices and the like by utilizing the recognition effect and the three-dimensional effect between a host and an object. At present, the ligand molecule design of the cage-shaped complex is biased to novel organic macromolecules with high structural symmetry, so that the complex with a structure easy to detect and a large internal cavity volume is constructed. The cage-shaped complex provides a good way for the creation research of functional materials. In recent years, various designable, predictable and controllable precise and ingenious coordination self-assembly strategies emerge, and ideas and application examples are provided for the self-assembly of the coordination supermolecules directionally synthesized into different structures. Based on the development of the self-assembly supermolecule coordination compound, the synthesis method, the characterization technology and the application prospect of the modern supermolecule chemistry are promoted and enriched.
Disclosure of Invention
The invention aims to provide a tetrahedral cage structure complex.
Another object of the present invention is to provide a process for the preparation of the above complexes.
The technical scheme of the invention comprises the following steps:
a tetrahedral cage structure complex is shown as a general formula (I):
Figure BSA0000172101450000011
a process for the synthesis of the complex (I) according to claim 1. Taking p-nitrophenol as a raw material, carrying out nucleophilic substitution reaction on the p-nitrophenol and cyanuric chloride to obtain tri-p-nitrophenoxy s-triazine, and reducing the tri-p-nitrophenoxy s-triazine by iron powder to obtain tri-p-aminophenoxy s-triazine; synthesizing a target complex by using tri-p-aminophenoxy s-triazine, ferrous trifluoromethanesulfonate or zinc trifluoromethanesulfonate and 3-methylpyridine-2-formaldehyde through self-assembly. The reaction process is as follows:
Figure BSA0000172101450000021
the conditions in reaction (2) were: the reaction solvent can be selected from acetonitrile, methanol, pyridine and dioxane, and is preferably acetonitrile; the reaction temperature can be selected from 30-75 ℃, and preferably 30-55 ℃. The self-assembly synthesis method adopted by the invention can obtain the target product by one-step reaction, and is simple and easy to implement.
The complex (I) has stronger fluorescence property under the excitation of ultraviolet light, so that the complex can become a potential high-quality luminescent material.
Drawings
Fig. 1 shows the fluorescence spectrum of complex (I) (M ═ Fe); fig. 2 shows the fluorescence spectrum of complex (I) (M ═ Zn).
Detailed Description
Example 1
This example illustrates the preparation of tris-p-aminophenoxy s-triazine
Adding 3.00g (25.2mmol) of p-nitrophenol and 1g (25.2mmol) of sodium hydroxide into a 500mL four-neck flask containing 100mL of water and 20mL of acetone, magnetically stirring for 15min, slowly dropwise adding 100mL of acetone solution dissolved with 1.5g (8.2mmol) of cyanuric chloride under ice bath, reacting for 2h after the addition is finished, filtering, washing and drying to obtain 3.65g of white tri-p-nitrophenoxy-s-triazine with a melting point: 208 ℃ and 212 ℃.1H NMR(400MHz,CDCl3):8.33(d,J=8.76Hz,2H),7.37(d,J=9Hz,2H),13C NMR(400MHz,CDCl3):173.07,162.56,145.91,125.55,122.39。
Adding 1.78g (3.7mmol) of tris-p-nitrophenoxy s-triazine, 3g (55mmol) of ammonium chloride, 60mL of methanol and 20mL of water into a 250mL flask in sequence, stirring and heating to reflux, adding 3g (55mmol) of 100-mesh high-activity reduced iron powder for three times under stirring, filtering while hot after reacting for 2 hours, washing a filter cake with 10mL of hot methanol multiplied by 2, adjusting the pH of the obtained filtrate to 9 with sodium bicarbonate, filtering and desolventizing, recrystallizing the obtained crude product with methanol to obtain 1.12g of light yellow tris-p-aminophenoxy s-triazine, wherein the yield is 63%, and the melting point is as follows: 225 ℃ and 228 ℃.1H NMR(400MHz,CDCl3):6.94(d,J=8.76Hz,1H,Benzene-H),6.65(d,J=8.72Hz,1H,Benzene-H),3.70(s,6H,NH2),13C NMR(400MHz,DMSO):174.09,146.88,142.24,122.07,114.64。
Example 2
This example illustrates the preparation of a tetrahedral cage complex and its fluorescence properties
(1) Preparation of Complex (I) (M ═ Fe)
In a 25mL flask were charged, in order, 25mg (0.062mmol) of tris-p-aminophenoxy-s-triazine, 22mg (0.062mmol) of ferrous trifluoromethanesulfonate, 22mg (0.186mmol) of 3-methylpyridine-2-carbaldehyde and 10mL of acetonitrile, N2The reaction is carried out for 12h at the temperature of 30 ℃ under protection. After the reaction is finished, 15mL of ether is added to separate out a solid, a mauve solid is obtained after centrifugal separation, and the product 33mg is obtained after ether washing and drying. The yield was 57.3%, the melting point > 300 ℃. Nuclear magnetic data1H NMR(400MHz,CD3CN): 9.03(s, 1H, imine-H), 8.14(d, J ═ 8.5Hz, 1H, pyridine-H), 7.62(t, J ═ 12.9Hz, 1H, pyridine-H), 7.48(d, J ═ 7.5Hz, 1H, pyridine-H), 7.21(d, J ═ 7.1Hz, 1H, Benzene-H), 7.04(d, J ═ 5.0Hz, 1H, Benzene-H), 5.82(d, J ═ 9.5Hz, 1H, Benzene-H), 5.21(d, J ═ 8.6Hz, 1H, Benzene-H), 2.82(s, 3H, Methyl-H), data (ESI-MS): m/z 383.6.
(2) Preparation of Complex (I) (M ═ Zn)
In a 25mL flask were charged 25mg (0.062mmol) of tris-p-aminophenoxy-s-triazine, 23mg (0.062mmol) of zinc trifluoromethanesulfonate, 22mg (0.186mmol) of 3-methylpyridine-2-carbaldehyde and 10mL of acetonitrile in this order, and reacted at 55 ℃ for 12 hours. After the reaction, 15mL of ether is added to separate out a solid, a white solid is obtained after centrifugal separation, and the product 37mg is obtained after ether washing and drying. The yield was 59.1%, the melting point > 300 ℃. Nuclear magnetic data1H NMR(400MHz,CD3CN):8.73(s,1H,imine-H),8.24(d,J=7.8Hz,1H,pyridine-H),7.77(t,J=7.8Hz,1H,pyridine-H),7.71(d,J=4.2Hz,1H,pyridine-H),7.44(d,J=7.3Hz,2H,Benzene-H),6.02(s,2H,Benzene-H),2.69(s,3H,Methyl-H),13C NMR(400MHz,CD3CN): 179.35, 156.08, 152.15, 151.71, 150.07, 149.26, 145.76, 134.80, 129.15, 127.47, 122.70, mass spectrometry data (ESI-MS): m/z 387.6.
(3) Measurement of fluorescent Property of Complex (I)
The fluorescence spectrum data of the conjugate (I) are shown in FIG. 1. As can be seen, the complex (I) (M ═ Fe) emits strong fluorescence at a wavelength of 416nm under the excitation of ultraviolet light; the complex (I) (M ═ Zn) emits strong fluorescence at the wavelength of 553nm under the excitation of ultraviolet light, and the complex (I) is proved to have good fluorescence characteristics.

Claims (3)

1. An imine complex with a tetrahedral cage structure, which has a structure shown as a general formula (I):
Figure FSA0000172101440000011
2. a process for the preparation of a complex of formula (I) as claimed in claim 1. Synthesizing a target complex by using tri-p-aminophenoxy s-triazine, ferrous trifluoromethanesulfonate or zinc trifluoromethanesulfonate and 3-methylpyridine-2-formaldehyde through self-assembly. The reaction process is as follows:
Figure FSA0000172101440000012
3. the production method according to claim 2, wherein: the reaction solvent in the reaction (1) is selected from acetonitrile, methanol, pyridine and dioxane, and is preferably acetonitrile; the reaction temperature in the reaction (1) is 30 to 75 ℃, and preferably 30 to 55 ℃.
CN201811205540.8A 2018-10-12 2018-10-12 Tetrahedral cage-like structure complex and preparation method thereof Pending CN111039964A (en)

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CN1385490A (en) * 2002-04-25 2002-12-18 山东师范大学 Blue light fluorescent powder converting agent for agricultural film and making method thereof
US20030224117A1 (en) * 2002-04-05 2003-12-04 Interantional Business Machines Corporation Thin films from metal-metal bonded complexes
JP2006004721A (en) * 2004-06-16 2006-01-05 Fuji Electric Holdings Co Ltd Top emission type organic el element
CN101240168A (en) * 2008-03-19 2008-08-13 哈尔滨工业大学 Blue light organic luminescent material and preparation method thereof
CN101445481A (en) * 2008-12-10 2009-06-03 武汉大学 Forcipate thioacid amide ligand, complex compound and application of sulfo-2, 6-pyridine diformamide framework
CN103224508A (en) * 2013-05-23 2013-07-31 哈尔滨工业大学 Organic red-light material o-pyridyl monoimido zinc/mercury complex and preparation method thereof
CN104230944A (en) * 2014-09-30 2014-12-24 深圳华润九新药业有限公司 Bi-zinc-phthalocyanine coordination compound and preparation method and application thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030224117A1 (en) * 2002-04-05 2003-12-04 Interantional Business Machines Corporation Thin films from metal-metal bonded complexes
CN1385490A (en) * 2002-04-25 2002-12-18 山东师范大学 Blue light fluorescent powder converting agent for agricultural film and making method thereof
JP2006004721A (en) * 2004-06-16 2006-01-05 Fuji Electric Holdings Co Ltd Top emission type organic el element
CN101240168A (en) * 2008-03-19 2008-08-13 哈尔滨工业大学 Blue light organic luminescent material and preparation method thereof
CN101445481A (en) * 2008-12-10 2009-06-03 武汉大学 Forcipate thioacid amide ligand, complex compound and application of sulfo-2, 6-pyridine diformamide framework
CN103224508A (en) * 2013-05-23 2013-07-31 哈尔滨工业大学 Organic red-light material o-pyridyl monoimido zinc/mercury complex and preparation method thereof
CN104230944A (en) * 2014-09-30 2014-12-24 深圳华润九新药业有限公司 Bi-zinc-phthalocyanine coordination compound and preparation method and application thereof

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WEN-YUAN WU等: "Self-assembly and peripheral guest-binding of [Zn3L2(H2O)6]6+ triangular double helicate", 《INORGANIC CHEMISTRY COMMUNICATIONS》 *

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