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Supermolecular sensor and application of supermolecular sensor in synthesis and fluorescent recognition of fluoride ions and arginine
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A fluorescence recognition and sensor technology, applied in fluorescence/phosphorescence, chemical instruments and methods, instruments, etc., can solve problems such as plant toxicity, photosynthesis inhibition, and lack of green plants in plants
Inactive Publication Date: 2018-05-22
NORTHWEST NORMAL UNIVERSITY
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Embodiment 1
[0041] Use DMF as solvent, and react at room temperature for 10~12 hours with trimesoyl chloride and 1,8-naphthalimide hydrazine in a molar ratio of 1:3; after the reaction, add hydrochloric acid, cool, and there will be white flocs Precipitate, filter with suction, and recrystallize with DMF and ethanol to obtain the product TCN. The yield was 68.3%. The mass spectrum and hydrogen spectrum of the sensor molecule TCN are shown in figure 1 with figure 2 .
Embodiment 2
[0042] Embodiment 2, TCN identification F -
[0043] Pipette 2 ml of supramolecular sensor molecule TCN in DMSO-H 2 O solution (C TCN =1×10 -4 M, V DMSO : V 水 = 3:1) In a series of colorimetric tubes, add CN - , I - , F - , Cl - , N 3- , ClO 4 - , H 2 PO 4 - , AcO - , HSO 4 - , SCN - , Br - and OH - aqueous solution (C=0.1M), if the sensor molecule DMSO-H 2 The fluorescence of the O solution increased, indicating that F was added - , if the fluorescence of the sensor molecule does not change, it means that the addition of F - .
[0044] Pipette 2 ml supramolecular sensor molecule TCN solution into a series of cuvettes, add 10 times the equivalent of CN - , I - , F - , Cl - , N 3- , ClO 4 - , H 2 PO 4 - , AcO - , HSO 4 - , SCN - , Br - and OH - aqueous solution, if the fluorescence of sensor molecules increases,
Embodiment 3
[0045] Embodiment 3, TCN recognizes Arg
[0046] Pipette 2 ml of supramolecular sensor molecule TCN in DMSO-H 2 O solution (C TCN =1×10 -4 M, V DMSO : V 水 = 3:1) Add Thr, Ser, Gly, Arg, Ile, Val, Ala, Gln, Cys, Asp, Pro, Tyr, Met, Leu, Gln, Phe, Asp aqueous solutions to a series of colorimetric tubes (C=0.1M), if the sensor molecule DMSO-H 2 The fluorescence of the O solution increases, indicating that Arg is added. If the DMSO-H of the sensor molecule 2 If the fluorescence of the O solution does not change, it means that Arg is not added.
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Abstract
The invention discloses a supermolecular sensor TCN capable of fluorescently recognizing fluoride ions and arginine. The supermolecular sensor can be coordinated with F<-> to form a supermolecular sensor complex TCN-F<-> and generate fluorescence enhancement at the same time, so that the supermolecular sensor can be applied to single selective fluorescence identification of F<->, and the lowest detection line is 3.50 x 10<-8> M; moreover, the supermolecular sensor can be coordinated with Arg to form a supermolecular sensor complex TCN-Arg and generate fluorescence enhancement at the same time,so that the supermolecular sensor can be applied to single selective fluorescence identification of Arg, and the lowest detection line is 2.43 x 10<-8> M. The recognition performance has an importantapplication value in the field of ion recognition and molecule recognition.
Description
technical field [0001] The present invention relates to a supramolecular sensor capable of single and selective recognition of fluorideion and arginine (Arg) and its synthesis method; the present invention also relates to the supramolecular sensor in DMSO-H 2 Fluorescent recognition of F in O solution - The application of the invention and Arg belongs to the fields of chemical synthesis, anion detection and amino acid detection. Background technique [0002] Fluorine is an indispensable trace element for the human body, and any tissue and organ of the human body contains fluorine. Especially in our bones and teeth, more than 90% of the total fluorine in the human body is concentrated. Fluorine is an essential trace element for the human body, too much or too little intake will have adverse effects on human health, excessive intake of fluorine can lead to chronic fluorosis, and will produce dental fluorosis and skeletal fluorosis as the main characteristics. Chronic syste...
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