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Preparation and application of thermally responsive supramolecular polymer hydrogels and their metallogels
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A supramolecular polymer, metal gel technology, applied in analytical materials, material excitation analysis, chemical instruments and methods, etc., can solve problems such as tissue unavailability
Active Publication Date: 2022-05-24
NORTHWEST NORMAL UNIVERSITY
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Cyanide ions can quickly combine with ferric ions in cytochrome oxidase in the body, inhibit the enzyme activity, and make the tissue unable to utilize oxygen
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Embodiment 1
[0049] Example 1. Synthesis of supramolecular polymer hydrogel GHQ-G with thermal response
[0050] 1. Synthesis of host gel factor G: First, 1,10-dibromodecane (24.0056g, 80mmol) and potassiumiodide (3.3200g, 20mmol) were added to a 500mL round-bottom flask and stirred at room temperature for 20 minutes Then, potassiumcarbonate (8.2926 g, 60 mmol) was added and stirred at room temperature for 10 minutes, p-methoxyphenol (2.4828 g, 20 mmol) was added to the round-bottomed flask, heated (65 °C) under nitrogen protection, and stirred for 48 h , to obtain the product bromoalkane-substituted p-methoxyphenol. Next, p-methoxyphenol substituted with bromoalkane (1.7586g, 5mmol) was weighed into a 250mL round-bottom flask, p-methoxybenzene (5.2503g, 38mmol) was added, and 200mL of dichloromethane was added to the flask. Stir in an oil bath (30°C), add paraformaldehyde (2.8904g), and then react with 5mL of borontrifluorideether for about 1h to obtain the mono-substituted column pe...
Embodiment 2
[0057] Example 2. Recognition of Tb by supramolecular polymer hydrogel GHQ-G 3+ and Eu 3+
[0058] In supramolecular polymer hydrogels, metal ions Fe were added separately 3+ , Hg 2+ , Ag + , Ca 2+ , Cu 2+ , Co 2+ , Ni 2+ , Cd 2+ , Pb 2+ , Zn 2+ , Cr 3+ , Mg 2+ , Ba 2+ , Al 3+ , Eu 3+ , Tb 3+ , La 3+ , Th 4+ After heating and dissolving, if the fluorescence of GHQ-G is quenched or weakened, it means that Tb is added. 3+ and Eu 3+ , otherwise other metal ions are added.
Embodiment 3
[0059] Example 3. Preparation and application of metal gel GHQ-GTb
[0060] In the supramolecular polymer hydrogel GHQ, one equivalent of metal ion Tb was added respectively 3+ , heated to form a sol, and cooled to room temperature to obtain a metal gel GHQ-GTb with aggregation-induced luminescence properties.
[0061] The anionic AcO was added to the metallogel GHQ-GTb, respectively, under heating - , HSO 4 - , H 2 PO 4 - , F - , Cl - , Br - , I - , ClO 4 - , SCN - , CN - , S 2 - , N 3 - If the fluorescence of the metal gel GHQ-GTb is turned on, it means that CN is added. - , otherwise other anions are added.
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Abstract
The invention discloses a thermally responsive supramolecular polymer hydrogel, which is based on phthalimide functionalized column [5] arene G as the main body, and the tripod small molecule compound HQ as the guest, in DMSO / H 2 The thermoresponsive supramolecular polymer hydrogel GHQ‑G can be formed through the host-guest interaction in O. Hydrogel GHQ‑G vs Tb 3+ and Eu 3+ Ultra-sensitive detection performance. GHQ-G and Tb 3+ 、Eu 3+ The supramolecular polymer metallogels GHQ‑GTb and GHQ‑Geu obtained after the interaction also have aggregation-induced luminescent properties, and GHQ‑GTb and GHQ‑GEu can detect CN ‑ and ClO 4 ‑ , therefore, the supramolecular polymer hydrogel is of great significance in the field of ultrasensitive response to ions.
Description
technical field [0001] The invention relates to a supramolecular polymer hydrogel, in particular to a supramolecular polymer hydrogel with thermal response; the invention also relates to the identification, separation and removal of the supramolecular polymer hydrogel in an aqueous solution Tb 3+ and Eu 3+ The invention also relates to the metalgel based on the supramolecular polymer hydrogel and its high-sensitivity identification CN - , ClO 4 - It belongs to the field of supramolecular polymer and ion detection. Background technique [0002] The toxicity of cyanide is mainly caused by the release of cyanide in the body. Cyanide can be ingested into the body through the respiratory and digestive tracts. Cyanide ions can quickly combine with ferric ions in cytochrome oxidase in the body, inhibiting the activity of the enzyme and making the tissue unable to utilize oxygen. When a large amount of cyanide is swallowed or inhaled, the poisoned person immediately falls to...
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