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Novel co-frame organic framework material and preparation method and application thereof

An organic framework and co-frame technology, which is applied in the field of novel co-frame organic framework materials and their preparation, can solve the problems of poor conductivity of two-dimensional COFs, low capacity of supercapacitor electrode materials, and low nitrogen doping content.

Inactive Publication Date: 2021-05-18
CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most 2D COFs still have the problem of poor conductivity, as well as the low content of nitrogen doping, resulting in fewer active sites, resulting in the defect of low capacity as an electrode material for supercapacitors.

Method used

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  • Novel co-frame organic framework material and preparation method and application thereof
  • Novel co-frame organic framework material and preparation method and application thereof
  • Novel co-frame organic framework material and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Preparation of novel co-framed organic framework materials

[0033] Add hexaaminotriphenylene and cyclohexanone in a molar ratio of 1:3 to H + In acidic ethanol with a volume fraction of 10%, after ultrasonic mixing, reflux reaction at 200°C for 60h, then wash with ethanol, and finally centrifuge to obtain the solid phase, vacuum-dry the solid phase at 80°C to constant weight to obtain brown-gray powder to prepare a new co-framed organic framework material.

Embodiment 2

[0035] Preparation of novel co-framed organic framework materials

[0036] Add hexaaminotriphenylene and cyclohexanone in a molar ratio of 1:3 to H + In acidic ethanol with a volume fraction of 10%, after ultrasonic mixing, reflux reaction at 180°C for 50h, then wash with ethanol, and finally centrifuge to obtain the solid phase, vacuum-dry the solid phase at 80°C to constant weight, and obtain brown-gray powder to prepare a new co-framed organic framework material.

Embodiment 3

[0038] Preparation of novel co-framed organic framework materials

[0039] Add hexaaminotriphenylene and cyclohexanone in a molar ratio of 1:3 to H + In acidic ethanol with a volume fraction of 10%, after ultrasonic mixing, reflux at 180°C for 72h, then wash with ethanol, and finally centrifuge to obtain the solid phase, vacuum dry the solid phase at 80°C to constant weight, and obtain brown-gray powder to prepare a new co-framed organic framework material.

[0040] figure 1 It is a schematic diagram of the molecular structure of the novel co-frame organic framework material in the present invention, consisting of figure 1 It can be seen that the material structure is a completely planar two-dimensional structure and a highly symmetrical periodic structure with holes, with approximately The left and right periodic channels, and a large number of nitrogen active sites.

[0041] figure 2 It is the SEM picture of the novel co-frame organic framework material prepared in Ex...

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Abstract

The invention relates to a novel co-frame organic framework material and a preparation method and application thereof, and belongs to the technical field of organic chemistry. The structural formula of the material is shown in the specification, and the preparation method comprises the following steps: taking hexaamino triphenylene and cyclohexanehexone as raw materials, carrying out a coupling reaction in an acidic organic solvent, after the reaction is finished, washing, carrying out solid-liquid separation, taking a solid phase, and drying. The novel co-frame organic framework material has a completely molten nitrogen-rich aromatic 2D framework, a modular structure, structural adjustability, unique pore characteristics and a uniform and controlled pore system, can be widely applied to the field of electrochemistry, has better pseudocapacitance performance of a supercapacitor when being applied to the supercapacitor, and has good stability, 98% of the material remains after 10000 cycles of charging and discharging at a constant current of 4A / g, and the material has a great guiding effect on the design of a two-dimensional conductive COF material. The preparation method of the material is simple, easy to operate, low in equipment requirement and suitable for expanded production.

Description

technical field [0001] The invention belongs to the technical field of organic chemistry, and in particular relates to a novel co-frame organic framework material and its preparation method and application. Background technique [0002] In 2005, Yaghi's research group used reversible covalent bonds to connect molecular building blocks into an infinitely extending network structure, and synthesized a new class of crystalline covalent organic frameworks (COFs) for the first time. The unique network structure and crystallization Sex drives it to possess some remarkable properties. Compared with other porous materials, COFs have the following advantages: (1) Its composition is mainly composed of light atoms such as C, H, N, B, O, etc., so it has a lower density; (2) The process of synthesizing COFs It is a process controlled by thermodynamics. During the formation of materials, self-healing can occur to form highly crystalline substances, which have good thermal and chemical st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/06H01G11/32H01G11/24
CPCC08G73/0694H01G11/32H01G11/24Y02E60/13
Inventor 李振湖李徐刘双翼
Owner CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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