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Naphthyl-based phenazine receptor molecule, test paper and synthesis thereof, and application of receptor molecule in identification of Fe<3+> and H2PO4<->

A technology of H2PO4 and acceptor molecules, applied in the field of ion detection, can solve problems such as water eutrophication

Inactive Publication Date: 2014-08-20
NORTHWEST NORMAL UNIVERSITY
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Problems solved by technology

[0003] Dihydrogen phosphate ion and its derivatives play an important role in signal transduction and energy storage system of life, but its excessive content will lead to eutrophication of water bodies

Method used

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  • Naphthyl-based phenazine receptor molecule, test paper and synthesis thereof, and application of receptor molecule in identification of Fe&lt;3+&gt; and H2PO4&lt;-&gt;
  • Naphthyl-based phenazine receptor molecule, test paper and synthesis thereof, and application of receptor molecule in identification of Fe&lt;3+&gt; and H2PO4&lt;-&gt;
  • Naphthyl-based phenazine receptor molecule, test paper and synthesis thereof, and application of receptor molecule in identification of Fe&lt;3+&gt; and H2PO4&lt;-&gt;

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Embodiment Construction

[0038] The synthesis of acceptor molecules and test paper of the present invention and the continuous recognition of Fe are as follows through specific examples. 3+ and H 2 PO 4 - The application in is further explained.

[0039] 1. Synthesis of receptor molecules: Put 2mmol 2,3-diaminophenazine and 2.2mmol 2-hydroxy-1-naphthaldehyde in a 100 mL round bottom flask, add 20 mL DMF, 1 mL glacial acetic acid, and place in an oil bath Heat to reflux at 80°C for 8h. After the reaction was stopped, cool to room temperature, and a brown precipitate precipitated out, which was filtered and washed three times with hot ethanol solution, and then washed with DMF-H 2O was recrystallized to give a brown powdery product—2-(2-hydroxynaphthyl)- 1 H -imidazo[4,5-b]phenazine G 1 . Yield: 43%.

[0040] G 1 : The melting point is greater than 300°C. m.p. >300℃; 1 H NMR (DMSO- d 6 , 600 MHz) δ 13.11 (s 1H, NH), δ 11.59 (s 1H, OH), δ 8.53 (d 1H ArH), 8.51~8.28 (m 2H, ArH) 8.27~8.09 (m ...

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Abstract

The invention relates to a synthesis method of a receptor molecule used for identifying H2PO4<-> and Fe<3+>. The receptor molecule treats a naphthalene ring as a fluorescence signal report group, uses an oxygen atom in a hydroxy group and nitrogen atoms in an imidazolyl group as binding sites of Fe<3+>, and has a strong complexing ability on Fe<3+>, H2PO4<-> and Fe<3+> can form Fe(H2PO4)3 inorganic salt, so Fe<3+> and H2PO4<-> can be continuously fluorescently identified. Results of fluorescence titration experiments show that the receptor has a high detection sensitivity to each of Fe<3+> and H2PO4<->, and the lowest detectable limits reach 0.29ppm and 0.19ppm respectively. The invention also relates to a receptor molecule supported colorimetric test paper. The colorimetric test paper can conveniently and fast fluorescently detect Fe<3+> and H2PO4<->, and has a very good application prospect in the detection fields of Fe<3+> and H2PO4<->.

Description

technical field [0001] The present invention relates to a kind of naphthyl-based phenazine acceptor molecule and its synthetic method; The present invention also relates to this acceptor molecule in continuous recognition Fe 3+ and H 2 PO 4 - The application in the invention belongs to the technical field of ion detection. Background technique [0002] Iron ion Fe 3+ Plays important roles in the human body, such as energy production, oxygen delivery, gene expression, neurotransmission, and enzyme regulation. Iron ions in myosin, hemoglobin, and cytochrome are also one of the important elements. The correct expression of these functions depends on the balance of iron ions in the body. Both iron deficiency and iron excess are harmful to the human body. Examples include Alzheimer's, epilepsy, and Parkinson's disease. Moreover, too much iron ion is also harmful to the environment. Therefore, the research and development of iron ion receptors has received a lot of attent...

Claims

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Application Information

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IPC IPC(8): C07D487/04G01N21/78G01N21/64
CPCC07D487/04C09K11/06C09K2211/1044G01N21/6428G01N21/78G01N2021/6443
Inventor 魏太保高国莹曲文娟史兵兵张有明
Owner NORTHWEST NORMAL UNIVERSITY
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