High-water-solubility rhodamine-based polyion liquid and preparation method and application thereof

A polyionic liquid, ionic liquid technology, applied in color/spectral property measurement, organic chemistry, etc., can solve the problems of limited probe molecule loading, low probe molecule grafting rate, slow response rate, etc., to achieve the best application potential , Detect the effect of fast response speed and short response time
CN106519112AInactive Publication Date: 2017-03-22CHINA UNIV OF GEOSCIENCES (WUHAN)
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINA UNIV OF GEOSCIENCES (WUHAN)
Publication Date
2017-03-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the field of detection of heavy metal ions and particularly relates to high-water-solubility rhodamine-based polyion liquid and a preparation method thereof. The high-water-solubility rhodamine-based polyion liquid is applied to quick visual colorimetric detection of pure-water-phase copper ions. The rhodamine-based polyion liquid is formed by copolymerization of ion liquid monomers and salicylide-like rhodamine B hydrazide monomers, and has the advantages that the raw materials are low in cost and easy to obtain, preparation is easy and convenient, the rhodamine content is high, water solubility is excellent, and no nonspecific binding site exists; and efficient colorimetric detection of trace copper can be achieved in the environment of pure water, the detection limit of naked eyes and the detection limit of an ultraviolet-visible light spectrophotometric method are 0.5 micron and 0.15 micron correspondingly and are both far lower than 31 microns specified by the World Health Organization (WHO). In addition, the detection response time of detection of the rhodamine-based polyion liquid to copper ions is short, developing can be completed within 5s, and moreover, the rhodamine-based polyion liquid has excellent selectivity and is hardly influenced by other concomitant metal ions.
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Description

technical field

[0001] The invention belongs to the field of detection of heavy metal ions, and in particular relates to a highly water-soluble rhodamine-based polyionic liquid and a preparation method thereof, and the application of rapid visual colorimetric detection of pure water-phase copper ions. Background technique

[0002] Copper is an indispensable trace element for human health, but when copper ions are taken in excess, it will cause dysfunction in organs such as liver, gallbladder, brain, cornea and heart. With the rapid development of modern industry (especially mining and metallurgy, mechanical processing, chemical industry, electronics and other industries), the problem of copper ion pollution in water environment has become increasingly serious. The World Health Organization (WHO) clearly stipulates that the copper ion content in drinking water should be lower than 2mg / L (ie 31μM). Therefore, the rapid detection of copper ions in water environment is of great...

Claims

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