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Bis-schiff base sensor capable of circulation monitoring of copper ions, synthesis and applications thereof

A double Schiff base, copper ion technology, applied in the field of positive ion detection

Inactive Publication Date: 2015-01-28
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the application of Schiff base for selective recognition of copper ions has not been reported so far.

Method used

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  • Bis-schiff base sensor capable of circulation monitoring of copper ions, synthesis and applications thereof
  • Bis-schiff base sensor capable of circulation monitoring of copper ions, synthesis and applications thereof
  • Bis-schiff base sensor capable of circulation monitoring of copper ions, synthesis and applications thereof

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Embodiment Construction

[0035] The structure and synthesis of the sensor L of the present invention, the detection and identification method for copper ions, the preparation and application of the detection test paper will be described in detail below through specific examples.

[0036] 1. Synthesis of sensor molecule L

[0037] Weigh 0.48g (2.4mmol) of 2-hydroxy-1-naphthaldehyde into a 100mL round bottom flask, add 40mL of absolute ethanol as a solvent, slowly add 0.45g (2mmol) of o-toluidine, 1mL of glacial acetic acid under stirring As a catalyst, it was stirred at room temperature for 30 minutes, and then placed in an oil bath at 85°C to reflux for 12 hours to obtain 1.06 g of a yellow solid. The yield is 80%.

[0038] 2. Preparation of test paper

[0039] Cut the filter paper into a square of 8 cm × 8 cm, and use 0.5 mol L -1 Soak in dilute hydrochloric acid for 1 hour. After washing with distilled water several times, filter with suction on the Buchner funnel while washing with distilled wa...

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Abstract

According to the present invention, a bis-schiff base sensor capable of circulation monitoring of copper ions is designed and synthesized, and belongs to the field of cation detection. According to the bis-schiff base sensor, the sensor can perform high selectivity colorimetric fluoresce identification on Cu<2+> in a DMSO-H2O system, wherein the color and the fluoresce of the system are significantly changed when the Cu<2+> is added to the system while the addition of other cations does not cause the significant effect on the system, and when the DMSO-H2O system of the sensor is added with the Cu<2+> solution and then is added with H2PO4<->, the fluoresce of the system can be restored (at least cycles 5 times), such that the bis-schiff base sensor is the good and recycled Cu<2+> sensor. In order to rapid detection of copper ions, the bis-schiff base sensor is loaded on the test paper so as to prepare the copper ion detection test paper.

Description

technical field [0001] The invention belongs to the field of cation detection, and relates to a copper ion acceptor compound; in particular, it relates to a dual-Schiff base sensor for identifying copper ions with a highly selective colorimetric-fluorescence dual channel. The invention also relates to the synthesis of the copper ion double Schiff base sensor and its application in identifying copper ions. Background technique [0002] Metal cations play a special role in the metabolic process of organisms, and their transport inside and outside cells is completed under the control of binding corresponding proteins. Ca 2+ , Mg 2+ It plays an important role in nerve conduction and cell signal transduction, and a series of highly toxic heavy metals such as lead, mercury, and cadmium in metals are widely used in industrial production processes, and most of them are finally converted into cations and discharged to nature. These heavy metal ions can be enriched in biological ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C249/02C07C251/24G01N21/33G01N21/64
Inventor 魏太保李辉东张有明林奇姚虹
Owner NORTHWEST NORMAL UNIVERSITY