Supramolecular polymer gel based on pillar[5]arene, and synthesis and application thereof
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A technology of supramolecular polymers and aromatic hydrocarbons, applied in the field of fluorescence detection, can solve problems affecting human health and environmental pollution
Active Publication Date: 2019-07-26
NORTHWEST NORMAL UNIVERSITY
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Iron ions and copper ions are essential trace elements for the human body, but excessive amounts
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[0034] Example 1. Preparation of MTP5-HB gel
[0035] Weigh 0.0086 g (9.6 × 10 -6 mol) MTP5 and 0.0014 g (4.8 × 10 -6 mol) HB in the gel, add 200 µL DMSO-H to it 2 O (35% water) solution, fully heated to completely dissolve and then cool to room temperature statically to form 50 mg / mL blue-white fluorescent gel MTP5-HB.
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[0036] Example 2. Recognition of metal ions by MTP5-HB gel
[0037] Pipette 5 mg organogel MTP5-HB into a series of drip plates, and add 10 µLCa 2+ , Mg 2+ , Pb 2+ , Ni 2 + , Co 2+ , Hg 2+ , Zn 2+ , Cd 2+ , Ag + , Cu 2+ , Cr 3+ , Al 3+ , Ba 2+ , La 3+ , Eu 3+ , Fe 3+ Aqueous solution (0.1M); if the fluorescence of the organogel is quenched, it means that Fe may be added 3+ Or Cu 2+ If the fluorescence of the organogel does not change significantly, it means that other metal ions are added.
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[0038] Example 3: MTP5-HB dry gel powder detects acid gas
[0039] Weigh 5 mg of the solid powder of MTP5-HB dry gel on a series of glass slides, and place the glass slides in gas cylinders containing acetic acid, hydrochloric acid, hydrogen sulfide, trimethylamine, and ammonia, and observe after placing them. Fluorescence changes of gel MTP5-HB. If the fluorescence of MTP5-HB xerogel powder is significantly reduced, the gas in the gas cylinder is acid gas (acetic acid, hydrochloric acid, hydrogen sulfide gas), if the fluorescence of MTP5-HB xerogel powder remains unchanged, the gas will be collected The gas in the bottle is alkaline gas (trimethylamine or ammonia).
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Abstract
The invention provides supramolecular polymer gel based on pillar[5]arene. The supramolecular polymer gel has the advantages that the pillar[5]arene modified by sulfo-acethydrazide serves as a main body, 2,2'-(1,6-hexyl)-benzimidazole serves as an object, the main body and the object are completely dissolved and self-assembled in a DMSO-H2O solution and then cooled to room temperature to form theorganic gel with bluish-white aggregation induced emission, the aggregation-state fluorescence quenching is achieved after coordination between the gel and iron or copper ions, and the two types of metal ions are detected highly sensitively; solid powder obtained after drying of the supramolecular polymer gel emits strong white fluorescence, and can be directly used for quickly detecting acid gases, so that a possibility is provided for development and application of high-performance solid gas sensors.
Description
technical field [0001] The present invention relates to a supramolecular polymer gel, in particular to a supramolecular polymer gel based on pillar [5] arene; the present invention also relates to the supramolecular polymer gel used as a fluorescent sensor molecule in the fluorescent recognition metal Ions and rapid detection of H 2 The application of acid gas such as S belongs to the technical field of fluorescence detection. Background technique [0002] Supramolecular polymers are the result of the combination of supramolecular chemistry and polymer chemistry, and are defined as polymer systems that extend beyond molecules. Supramolecular polymers are connected by various non-covalent interactions, including hydrogen bonding, metal coordination, π-π stacking, and host-guest interactions, which not only make them superior to traditional covalent bonds The advantages of polymers, and has many unique properties. In recent years, new supramolecular polymers with aggregatio...
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