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A conjugated polymer material that regulates carbon dioxide adsorption based on photothermal effect

A conjugated polymer, pentamethyldiethylenetriamine technology, applied in the field of materials, can solve the problems of limited wide application and low photothermal conversion efficiency, and achieve high reaction yield, strong photothermal conversion ability, and cheap raw materials Effect

Active Publication Date: 2021-05-11
HEBEI UNIV OF TECH
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Polyethyleneimine and graphene-based adsorption materials have the characteristics of gas adsorption and photothermal effect controllable release, but the low photothermal conversion efficiency limits their wide application.

Method used

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  • A conjugated polymer material that regulates carbon dioxide adsorption based on photothermal effect
  • A conjugated polymer material that regulates carbon dioxide adsorption based on photothermal effect
  • A conjugated polymer material that regulates carbon dioxide adsorption based on photothermal effect

Examples

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Embodiment 1

[0058] Embodiment 1, the synthesis of polymer PDPP-Gu

[0059] (1) Synthesis of 2.5-bis(6-bromohexyl)-3,6-bis(thiophen-2-yl)pyrrole[3,4-c]pyrrole-1,4(2H,5H)-dione

[0060]

[0061] Under nitrogen protection, 0.25g (1eq) of the compound DPP, 0.1g (2.2eq) of sodium hydride, 1.05g (5eq) of 1,6-dibromohexane and 7mL of DMF were sequentially added to a 100mL two-necked flask. The temperature was raised to 115°C to continue the reaction for 24h. Extract with dichloromethane and dry over anhydrous sodium sulfate. The residue was separated by silica gel column chromatography (dichloromethane:petroleum ether=5:1), the first point on the spot plate was the product point, and the yield was 58.4%.

[0062] The structural characterization data are as follows:

[0063] 1 H-NMR (400MHz, CDCl 3 ): δ (ppm) 8.93 (d, J = 3.6Hz, 2H), 7.66 (d, J = 5.2Hz, 2H), 7.31 (d, J = 4.8Hz, 2H), 4.11 (t, J = 5.2Hz , 4H), 3.42 (t, J=5.2Hz, 4H), 1.25-1.88 (m, 16H).

[0064] (2) Synthesis of 2.5-bis(6-...

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Abstract

The invention provides a conjugated polymer material that regulates carbon dioxide adsorption based on the photothermal effect. The structural formula of the conjugated polymer material is shown in formula 1. Wherein R is a functional group containing guanidine group, azido group and polyethyleneimine (PEI), A is a six-membered aromatic ring containing 0-3 N atoms, and the number of structural units n is 4-60. The conjugated polymer has high surface energy and large specific surface area, and the adsorption capacity for carbon dioxide reaches 0.8mmol / g. The polymer has a strong absorption near 808nm, and has a strong light-to-heat conversion ability, with a conversion efficiency of 15%-35%. The polymer has the dual characteristics of gas adsorption and photothermal conversion, and can dynamically control the adsorption and release of carbon dioxide by near-infrared light, showing the excellent application prospects of pyrrolopyrrole-type conjugated polymers in gas adsorption.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a conjugated polymer material that regulates carbon dioxide adsorption based on photothermal effects. Background technique [0002] carbon dioxide (CO 2 ) is closely related to life activities, and shoulders the heavy responsibility of regulating the acid-base balance of animal blood and cell fluid. CO 2 It is also the main gas involved in plant life activities, CO 2 Changes in concentration directly affect the intensity of photosynthesis and respiration of plants. CO 2 It is the main component of greenhouse gases in the atmosphere. With the improvement of people's awareness of environmental protection, the development of feasible CO 2 Adsorption / release materials are of great significance for regulating biological activities of living organisms, monitoring climate change and controlling agricultural production in greenhouses. [0003] CO 2 The adsorption capacity depe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G61/12B01J20/26B01D53/02
CPCY02P20/151Y02C20/40
Inventor 邢成芬李大伟高冬
Owner HEBEI UNIV OF TECH
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