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Conjugated polymer material for regulating carbon dioxide adsorption based on photothermal effect

An alkynylation and conjugated polymer technology, applied in the field of materials, can solve the problems of limited wide application and low photothermal conversion efficiency, and achieve the effects of high reaction yield, strong photothermal conversion ability, and short synthesis route.

Active Publication Date: 2019-05-17
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • 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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  • Conjugated polymer material for regulating carbon dioxide adsorption based on photothermal effect
  • Conjugated polymer material for regulating carbon dioxide adsorption based on photothermal effect
  • Conjugated polymer material for regulating carbon dioxide adsorption based on photothermal effect

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Effect test

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 for regulating carbon dioxide adsorption based on a photothermal effect. The structural formula of the conjugated polymer material is as shown in formula 1, wherein R is a functional group containing a guanidine group, an azide group, and polyethyleneimine (PEI), A is a six-membered aromatic ring containing 0-3 N atoms, and the number n of structural units is 4-60. A conjugated polymer has high surface energy and a large specific surface area, and has an adsorption capacity for carbon dioxide of 0.8mmol / g. The polymer has strong absorption near 808nm, the photothermal conversion ability is high, and the conversion efficiency is 15%-35%. The polymer has the dual characteristics of gas adsorption and photothermal conversion, can dynamically control the adsorption and release of carbon dioxide through near-infrared light, and demonstrates excellent application prospects of pyrrolopyrrole type conjugated polymers in gas adsorption. (Please see the specification for the formula).

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 Applications(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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