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Near-infrared electrochemical luminescence compound, the electrochemical luminescence system and the application thereof

A chemiluminescence and electrochemical technology, applied in ruthenium organic compounds, platinum group organic compounds, luminescent materials, etc., can solve the problem of single luminescence color

Active Publication Date: 2021-01-19
SUZHOU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the terpyridine ruthenium complex Ru(bpy) 3 2+ It is the most common type of electrochemiluminescent signal labeling molecules, but the luminescent color is single (orange red, the maximum emission wavelength is about 610nm), and it is extremely difficult to further redshift the wavelength to near infrared region

Method used

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  • Near-infrared electrochemical luminescence compound, the electrochemical luminescence system and the application thereof
  • Near-infrared electrochemical luminescence compound, the electrochemical luminescence system and the application thereof
  • Near-infrared electrochemical luminescence compound, the electrochemical luminescence system and the application thereof

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Experimental program
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Effect test

Embodiment 1

[0044] The partial structure of the positive monovalent cation of the electrochemiluminescent compound used is shown below:

[0045]

[0046] Synthesis of Electrochemiluminescent Compounds:

[0047]First react benzimidazole with p-iodobenzotrifluoride to obtain a ligand precursor, then react the ligand precursor with methyl iodide to obtain a C^C bidentate ligand, and then further compound C^C* bidentate The intermediate is reacted with dichlorobis(4-methylisopropylphenyl)ruthenium (II) to obtain the intermediate, and finally the intermediate is reacted with the N^N bidentate ligand to obtain the final electrochemiluminescence compound.

[0048] The glassy carbon electrodes in the electrochemiluminescent system involved in the present invention all use Al 2 o 3 Polishing powder sanding, washing, drying.

[0049] In the acetonitrile solution system, the concentration of the electrochemiluminescence compound was 0.1 mmol / L, tetrabutylammonium hexafluorophosphate was used a...

Embodiment 2

[0053] The partial structure of the positive monovalent cation of the electrochemiluminescent compound used is shown below:

[0054]

[0055] In the acetonitrile solution system, the concentration of the electrochemiluminescence compound was 0.1 mmol / L, tetrabutylammonium hexafluorophosphate was used as the supporting electrolyte at a concentration of 0.1 mol / L, and tripropylamine was used as a co-reactive molecule at a concentration of 40 mmol / L. L, using the cyclic potential scanning method (the potential range is -0.95V ~ +1.74 V, the scanning speed is 50mV / S, and the potential is based on NHE as a reference), and the electrochemiluminescent signal is collected by using a photomultiplier tube. The wavelength of the electrochemiluminescence peak is 824 nm.

[0056] In the acetonitrile solution system, the concentration of the electrochemiluminescence compound was 0.1 mmol / L, tetrabutylammonium hexafluorophosphate was used as the supporting electrolyte at a concentration o...

Embodiment 3

[0058] The partial structure of the positive monovalent cation of the electrochemiluminescent compound used is shown below:

[0059]

[0060] In the acetonitrile solution system, the concentration of the electrochemiluminescence compound was 0.1 mmol / L, tetrabutylammonium hexafluorophosphate was used as the supporting electrolyte at a concentration of 0.1 mol / L, and tripropylamine was used as a co-reactive molecule at a concentration of 40 mmol / L. L, using the cyclic potential scanning method (the potential range is -1.08 V to +1.49 V, the scanning speed is 50 mV / S, and the potential is based on NHE as a reference), and the electrochemiluminescence signal is collected using a photomultiplier tube. The wavelength of the electrochemiluminescence peak is 815 nm.

[0061] In the acetonitrile solution system, the concentration of the electrochemiluminescence compound was 0.1 mmol / L, tetrabutylammonium hexafluorophosphate was used as the supporting electrolyte at a concentration ...

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Abstract

According to the near-infrared electrochemical luminescence compound, the electrochemical luminescence system and the application thereof, the near-infrared electrochemical luminescence compound is abidentate ligand metal complex, the wavelength of an electrochemical luminescence peak of the near-infrared electrochemical luminescence compound can reach a near-infrared region, the near-infrared electrochemical luminescence compound can be prepared into the electrochemical luminescence system, and the near-infrared electrochemical luminescence compound has excellent electrochemical luminescenceefficiency in various luminescence modes.

Description

technical field [0001] The invention belongs to the technical field of electrochemiluminescence systems, and in particular relates to a near-infrared electrochemiluminescence compound, an electrochemiluminescence system and applications thereof. Background technique [0002] In the past few decades, imaging techniques based on fluorescence in the near-infrared region have played a huge role in the study of physiological or pathological processes in living organisms. Near-infrared luminescence has deeper penetration, better spatial resolution, and reduces photodamage to biological tissues. Compared with near-infrared fluorescence, near-infrared electrochemiluminescence can greatly reduce background noise and improve signal-to-noise ratio because it does not require an excitation light source. Therefore, the development of near-infrared electrochemiluminescent dyes has received extensive attention. At present, the terpyridine ruthenium complex Ru(bpy) 3 2+ It is the most c...

Claims

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Application Information

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IPC IPC(8): C07F15/00C09K11/06G01N21/64
CPCC07F15/0046C09K11/06C09K2211/1029C09K2211/1044C09K2211/1059C09K2211/185G01N21/6428
Inventor 丁杨铭周宇扬陈丰
Owner SUZHOU UNIV OF SCI & TECH
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