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A dual-emitting cds/r6g@zif-8 ratio fluorescent probe for the detection of fe 3+ applications in

A ratiometric fluorescent probe, dual emission technology, used in fluorescence/phosphorescence, luminescent materials, measurement devices, etc., can solve the problems of high cost and lack of portability, achieve easy storage, eliminate environmental and human factors interference, good selective effect

Active Publication Date: 2022-07-22
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, they are costly and lack portability

Method used

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  • A dual-emitting cds/r6g@zif-8 ratio fluorescent probe for the detection of fe <sup>3+</sup> applications in
  • A dual-emitting cds/r6g@zif-8 ratio fluorescent probe for the detection of fe <sup>3+</sup> applications in
  • A dual-emitting cds/r6g@zif-8 ratio fluorescent probe for the detection of fe <sup>3+</sup> applications in

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Synthesis of dual-emitting CDs / R6G@ZIF-8 ratiometric fluorescent probes:

[0031] 1) Synthesis of blue luminescent carbon dots (CDs): Sodium citrate (0.3 g) and glutathione (0.04 g) were mixed with 9 mL of ultrapure water, and the solution was mixed in a Teflon-lined autoclave Heated at 200°C for 4h. The obtained yellow product was purified with a 500Da dialysis bag for 12h, and the concentration was about 0.12mg / mL.

[0032] 2) Preparation of ZIF-8: Zn(NO 3 ) 2 ·6H 2 O (40 mmol) was dissolved in 20 mL of deionized water to give solution A. Solution B was obtained by dissolving 2-methylimidazole (160 mmol) in 20 mL of deionized water. Add solution A to solution B, mix uniformly, and then magnetically stir for 24 hours. After centrifugation and drying, white ZIF-8 is finally obtained.

[0033] 3) Synthesis of dual-emitting CDs / R6G@ZIF-8 ratiometric fluorescent probes: Zn(NO 3 ) 2 ·6H 2 O (40 mmol) was dissolved in 20 mL of deionized water to give solution A. So...

Embodiment 2

[0036] Detection of Fe by Fluorescence Analysis 3+ :

[0037] Sample solution: prepare 1mmol / L Fe 3+ Solutions and other metal cation solutions, ready to use.

[0038] 10 mg of CDs / R6G@ZIF-8 powder was dispersed in 10 mL of ultrapure water to prepare a 1 mg / mL suspension. Then 20 μL of the prepared CDs / R6G@ZIF-8 suspension was taken and transferred to a quartz cell, and 1.98 mL of ultrapure water was added (to ensure a total volume of 2 mL). Finally, use a precision micropipette to add different concentrations of Fe in order from less to more 3+ , detect Fe 3+ The effect of sample solution on the fluorescence signal of CDs / R6G@ZIF-8 probe. The slit width of the fluorescence spectrometer was set to 6 nm, and the excitation light wavelength was set to 351 nm. The emission wavelengths of CDs / R6G@ZIF-8 were measured to be 438 nm and 548 nm, 438 nm was the blue fluorescence peak emitted by carbon dots, and 548 nm was R6G. The green fluorescence peak emitted. The results show...

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Abstract

The invention discloses a dual-emission CDs / R6G@ZIF-8 ratio fluorescent probe in the detection of Fe 3+ For applications in , the dual-emitting CDs / R6G@ZIF-8 ratio fluorescent probe includes blue-emitting carbon dots and green-emitting rhodamine 6G. Ratiometric fluorescent probes are easy to store, have good stability, and are resistant to Fe 3+ It has good selectivity, which can realize Fe in aqueous solution 3+ The specific identification and detection of the method is simple and convenient to operate and has high sensitivity. At the same time, this ratio fluorescent probe can eliminate the interference of environmental and human factors, reduce the experimental error, and increase the reliability of the experimental conclusion.

Description

technical field [0001] The invention belongs to the technical field of chemical detection methods, and in particular relates to a dual-emission CDs / R6G@ZIF-8 ratio fluorescent probe in the detection of Fe 3+ applications in . Background technique [0002] Iron is an essential micronutrient for the human body, and most biological electron transfer processes rely on ferritin. while Fe 3+ It is the main component of hemoglobin, which facilitates the transport of oxygen in the blood. Iron plays an important role in brain development, thermoregulation, and muscle function in newborn babies. In addition, iron deficiency in pregnant women increases the risk of anemia and sepsis, and is associated with high mortality and morbidity. In addition, iron overload can lead to neurological disorders such as Alzheimer's disease and Parkinson's disease. [0003] Due to iron ions (Fe 3+ ) are important transition metal ions in biological systems and play crucial roles in many important ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/64C09K11/06C09K11/02C09K11/65
CPCG01N21/64G01N21/6428G01N21/643C09K11/06C09K11/02C09K11/65G01N2021/6421G01N2021/6432C09K2211/188C09K2211/1088
Inventor 卢小泉孙璐王菊霞赵睿张鹏萍刘秀娟唐淑园王妮白蕾韩振刚
Owner NORTHWEST NORMAL UNIVERSITY
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