Super molecular gel based on pillar [5] arene host-guest assembly and application thereof to detection and adsorption of iron ions

A supramolecular gel, host-guest technology, applied in the fields of adsorbed water/sewage treatment, analytical materials, measurement devices, etc., can solve the problems of ion recognition units that have not been reported before.

Inactive Publication Date: 2019-03-01
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, many stimuli-responsive host-guest recognition units based on pillararenes have been further applied to the preparation of various materials, however, as far as we know, through the host-gue

Method used

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  • Super molecular gel based on pillar [5] arene host-guest assembly and application thereof to detection and adsorption of iron ions
  • Super molecular gel based on pillar [5] arene host-guest assembly and application thereof to detection and adsorption of iron ions
  • Super molecular gel based on pillar [5] arene host-guest assembly and application thereof to detection and adsorption of iron ions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1, the synthesis of gelatin factor P5

[0038] 1. Synthesis of Compound M: Add 4-methoxyphenol (2.48g, 20.0mmol), anhydrous potassium carbonate (22.11g, 160mmol), potassium iodide (3.23g, 20mmol), 1, 10-Dibromodecane (24.01g, 80mmol) and 400mL of acetone were heated (60°C) under nitrogen protection and stirred for 72h. After the reaction, filter with suction, add silica gel to mix the sample, spin dry, and purify by column chromatography (petroleum ether: ethyl acetate = 50:1), and the obtained white product is M. Yield: 95%, melting point: 60 ~ 62°C. 1 H-NMR (CDCl 3 , 600 MHz), δ / ppm: 6.83 (s, 4H), 3.91-3.89 (t, J = 6.6 Hz, 2H), 3.76 (s, 3H), 3.41-3.39 (t, J = 6.9 Hz, 2H), 1.86-1.82 (m, 2H), 1.77-1.72 (m, 2H), 1.45-1.41 (m, 2H), 1.35-1.30 (m, 10H). 13 C-NMR (CDCl 3 , 150 MHz), δ / ppm: 153.64, 153.27, 115.41, 114.59, 68.62, 55.73, 34.01, 32.81, 30.47, 29.42, 29.36, 29.33, 28.72, 28.14, 26.02. HRMS m / z: C 17 h 27 BrO 2 [M]: 342.01, found: 342.12. ...

Embodiment 2

[0043] Example 2. Supramolecular polymer gel SP5-OG recognizes Fe 3+ .

[0044] Take 16 parts of a small amount (about 0.005g) of gel SP5-OG on the white drip plate, and add 10 μL of metal ion Cu to each of these gels 2+ ,Co 2+ , Ni 2+ , Cd 2+ , Pb 2+ , Zn 2+ , Mg 2+ , Ba 2+ , Ca 2+ , Tb 3+ , Ag + , Hg 2+ , Fe 3+ , La 3+ (C=0.1mol / L), and then observe the fluorescence change of the gel under 365nm fluorescent light. If the fluorescence of the gel SP5-OG is quenched, it means that the addition of Fe 3+ , the fluorescence of gel SP5-OG did not change, indicating that other ions were added.

Embodiment 3

[0045] Embodiment three, SP5-OG to Fe 3+ efficient adsorption

[0046] Weigh three parts of 0.001g xerogel SP5-OG, and add them to the concentration of 1×10 -5 MFe(ClO 4 ) 3 ・6H 2 In the aqueous solution of O, shake for a period of time, centrifuge for 10 min with a high-speed centrifuge, and then absorb the supernatant. It was confirmed by inductively coupled plasma analysis (ICP) that the effect of xerogel SP5-OG on Fe 3+ The adsorption rate is 99.8%.

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Abstract

The invention discloses a super molecular gel based on column based on pillar [5] arene host-guest assembly. The super molecular gel is characterized in that naphthalimide functionalized pillar [5] arene is taken as a host; a tripod pyridyl amide derivative is taken as a guest; a stable super molecule gel with a yellow aggregation-induced fluorescence is self-assembled in a DMSO/H2O system; when aseries of cation water solutions are added into SP5-OG, the fluorescence of the super molecular gel SP5-OG can be quenched by adding Fe<3+>, and the fluorescence of the super molecular gel SP5-OG keeps unchanged when adding other cations, so that the SP5-OG is specialized for detecting the Fe<3+>. Meanwhile, a detection line is 8.95*10<-10>M, indicating that the SP5-OG can realize super sensitivity detection on the Fe<3+>. Moreover, the dry gel powder of the super molecular polymer gel SP5-OG can adsorb Fe<3+>from the water solution well, and the adsorption rate is 99.8 percent.

Description

technical field [0001] The present invention relates to a kind of supramolecular polymer gel based on host-guest interaction and layered self-assembly construction, in particular to a supramolecular gel based on pillar [5] aromatic hydrocarbon host-guest assembly and its preparation method; the present invention It is also involved in the ultrasensitive detection of Fe by the supramolecular gel 3+ References in , belonging to the technical field of composite materials and the technical field of ion detection. Background technique [0002] At present, multi-stimuli fluorescent materials are attracting more and more attention because they can be used as basic monomers for the preparation of sensors, displays, bioimaging and memory media. In recent years, it has become important to find isolated ion-responsive materials for ultrasensitive detection of metal ions in the environment. So far, various methods have been used to detect the presence of different ions in the environm...

Claims

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Application Information

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IPC IPC(8): C08G83/00C02F1/28G01N21/64C02F101/20
CPCC02F1/285C02F2101/20C08G83/008G01N21/643G01N2021/6432
Inventor 林奇关晓文李颖洁王姣樊彦青姚虹魏太保张有明
Owner NORTHWEST NORMAL UNIVERSITY
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