Organic ligand, metal organic frames based on Cu (I) ions, synthetic method for organic ligand and metal organic frames based on Cu (I) ions and application
A metal-organic framework and organic ligand technology, applied in copper-organic compounds, chemical instruments and methods, organic chemistry, etc., can solve the problem of high maintenance costs
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Embodiment 1
[0074] Embodiment 1: the preparation of the metal-organic framework (MOF-2) of dark red Cu (I) ion
[0075] 1.N 2 Under protection, 3,5-dibromobenzoic acid (2.80g, 10mmol), pyridine-4-boronic acid (3.05g, 25mmol), potassium carbonate (17.2g, 125mmol) were placed in a 250mL three-necked flask, toluene, ethanol, water Each 50mL was used as a solvent, and the catalyst Pd(PPh 3 ) 4 (1.2g, 1mmol), heating to reflux for about 36h, standing still after the reaction, cooling, liquid separation, spin-drying the organic phase, adding water and suction filtration, adjusting the pH value of the filtrate to 4-5, suction filtration precipitation, drying to obtain milky white Intermediate B 2.48g, yield 89.9%.
[0076] 2. Intermediate B (2.76g, 10mmol), 1.30g (12mmol) of o-phenylenediamine in a beaker, add 30g of PPA, heat up to 170-180°C, stir for 6-8h, after cooling, add about 200mL of water to dilute , adjust the pH value to 8-9, filter with suction, and perform silica gel column chro...
Embodiment 2
[0081] Embodiment 2: the fluorescent response of above-mentioned MOF-2 to liquid methanol, ethanol, isopropanol, n-propanol, such as Figure 4a shown.
[0082] Soak the metal-organic framework (MOF-2) of the above-mentioned dark red Cu(I) ions in the liquid phase of methanol, ethanol, isopropanol, and n-propanol for 5-10s, and the metal of the dark red Cu(I) ions The organic framework (MOF-2) turns yellow ( Figure 5a );pass 1 HNMR can confirm that this change is due to the guest water molecules in the metal-organic framework (MOF-2) of dark red Cu(I) ions being respectively absorbed by methanol (3), ethanol (4), isopropanol (5), n-propanol Alcohol (6) molecular displacement leads to (eg Figure 6c -f), and its fluorescence response increases sequentially, which are represented as MOF-2, methanol (3), ethanol (4), isopropanol (5), and n-propanol (6) from bottom to top in the figure.
Embodiment 3
[0083] Embodiment 3: the fluorescence response of above-mentioned MOF-2 to gaseous methanol, ethanol, isopropanol, n-propanol, such as Figure 4b shown.
[0084] Put the metal-organic framework (MOF-2) of the dark red Cu(I) ion in the gas phase of methanol, ethanol, isopropanol, and n-propanol for 30-40min, and the metal organic framework of the dark red Cu(I) ion The frame (MOF-2) turns yellow ( Figure 5b ), it can be determined by 1HNMR that this change is due to the fact that the guest water molecules in the metal-organic framework (MOF-2) of the dark red Cu(I) ion are respectively separated by methanol (7), ethanol (8), isopropanol (9) , n-propanol (10) molecular replacement, and its fluorescence response is enhanced sequentially, shown in the figure as MOF-2, methanol (7), ethanol (8), isopropanol (9), n-propanol Alcohol (10).
[0085] We used Bruker AVANCE 300 nuclear magnetic resonance instrument to detect MOF-1, MOF-2, and the 3, 4, 5, 3, 4, 5, 6,7,8,9,10 for dete...
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