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A kind of double-walled carbon nano ring material and its preparation method and application

A technology of carbon nanorings and p-phenylene, applied in the direction of carbon nanotubes, nanocarbons, luminescent materials, etc., can solve the problems of re-hybridization, difficult purification, uncontrollable size, etc., and achieve the effect of stable structure and not easy to detach

Active Publication Date: 2021-10-22
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the perspective of the research field of carbon nanotubes, the current problems of carbon nanotubes are many defects (such as topological defects, re-hybridization defects, incomplete bonding defects, etc.), uncontrollable size, difficult to purify, etc.
But so far, no literature has reported the successful preparation of such double carbon nanorings.

Method used

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  • A kind of double-walled carbon nano ring material and its preparation method and application
  • A kind of double-walled carbon nano ring material and its preparation method and application
  • A kind of double-walled carbon nano ring material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Mix the [12]CPP and [6]CPP-chlorobenzene solutions in the same volume according to the molar ratio of 1:1 (concentration: 5.0×10 -4 M), stirred and mixed at room temperature for 48 hours (150 rev / min), and light yellow double-walled carbon nanorings can be precipitated quickly after standing Centrifuge (8000 rpm, 5 minutes) and wash with a chlorobenzene solvent to obtain a pure double-walled carbon nanoring material, i.e. (also known as Complex).

[0038] Firstly, the product was characterized by mass spectrometry, and the results were as follows: figure 1 shown. Depend on figure 1 It can be seen that a very stable The molecular weight is 1368, and the mass spectrometer used is matrix-assisted laser desorption ionization mass spectrometry. Under laser irradiation, the molecular ion peak of the complex is still very strong.

[0039] The product was characterized by quantum chemical calculations, the results are as follows Figure 4 Shown, double-walled carbon ...

Embodiment 2

[0041] To the prepared in the embodiment of the present invention 1 Complex carried out 1 H NMR characterization.

[0042] The preparation concentration is 5.0×10 -4 M's [6] CPP monomer, [12] CPP monomer and prepared in Example 1 of the present invention The deuterated dichloromethane solution of the complex was 0.5 mL each, and the solution was transferred into three nuclear magnetic tubes, and then characterized by hydrogen nuclear magnetic spectrum. figure 2 Prepared for [6] CPP monomer, [12] CPP monomer and Example 1 of the present invention Composite 1 H NMR characterization chart. Depend on figure 2 It can be seen that the prepared in Example 1 of the present invention Composite 1 The overall intensity of the H NMR peak decreases, and in addition, the prepared in Example 1 of the present invention The fingerprint peak of [6]CPP in the complex has shifted to the right by about 0.005ppm, which shows that the compound prepared in Example 1 of the present inv...

Embodiment 3

[0044] To the prepared in the embodiment of the present invention 1 The magnetic properties of cations were studied.

[0045] Each preparation [6] CPP monomer, [12] CPP monomer and the prepared in the embodiment of the present invention 1 The dichloromethane solution of the complex (5.0×10 -5 M). The oxidizing agent used is nitrous hexafluoroantimonate (NOSbF6), prepared 5.0×10 -5 M's oxidant solution. The oxidant solution and the carbon nanoring solution were transferred into a paramagnetic tube at a volume ratio of 1:1, ultrasonicated, and then characterized by electron paramagnetic resonance (EPR). pass image 3 It can be seen that [6] CPP monomer and [12] CPP monomer have no EPR signal, while the prepared in Example 1 of the present invention The complex presents a stronger free radical EPR signal, which indicates that the compound prepared in Example 1 of the present invention The cations of the complex are very stable, and the cations have paramagnetic prope...

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Abstract

The invention discloses a double-walled carbon nano-ring material, a preparation method and application thereof. The preparation method of the double-walled carbon nano-ring material of the present invention comprises the following steps: mixing the [12] cyclo-p-phenylene solution and the [6] cyclo-p-phenylene solution, and the precipitated solid is the double-walled carbon nano-ring material. The structure of the double-walled carbon nano ring prepared by the invention is stable, the molecule of the guest [6] CPP is not easy to detach, and the complex structure is still maintained in the solid state and the liquid state. The preparation process of the double-walled carbon nano rings of the present invention can be rapidly and efficiently prepared by stirring at room temperature without heating. The double-walled carbon nano ring material of the present invention is applied to the preparation of at least one of photoconductive devices, single molecule devices, nanometer self-assembly and organic magnetic materials.

Description

technical field [0001] The invention relates to a double-walled carbon nano ring material and its preparation method and application, belonging to the field of carbon nano materials. Background technique [0002] Carbon nanorings have important application value in the field of carbon nanomaterials because of their ring structure, conjugated electrons, and photoelectric properties. Cyclo-p-phenylene is a kind of carbon nanoring, which is a ring-shaped π-conjugated molecule formed by para-bonding of multiple benzene rings. Scientists have synthesized a variety of cyclo-p-phenylene, and the literature reports are: [5-16] cyclo-p-phenylene and [18] cyclo-p-phenylene. Carbon nanorings possess unique electrical and optical properties and are of great value in host-guest chemistry and optoelectronic materials. [0003] In a topological sense, cyclo-p-phenylene can be regarded as the most basic structural unit of carbon nanotubes, which belongs to the cross-sectional structure of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/16C09K11/65
CPCC01B2202/04C01B2202/20C09K11/65C01B32/16
Inventor 王太山赵冲王春儒
Owner INST OF CHEM CHINESE ACAD OF SCI
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