Rational Construction of a Responsive Azo-Functionalized Porous Organic Framework for CO<sub>2</sub> Sorption
An azo-functionalized porous organic framework (denoted as JJU-1) was synthesized via FeCl<sub>3</sub>-promoted oxidative coupling polymerization. By virtue of a porous skeleton and a light/heat responsive azo functional group, this task-specific JJU-1 displays a reversible stimuli-respo...
Main Authors: | , , |
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Format: | Article |
Language: | English |
Published: |
MDPI AG
2021-08-01
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Series: | Molecules |
Subjects: | |
Online Access: | https://www.mdpi.com/1420-3049/26/16/4993 |
Summary: | An azo-functionalized porous organic framework (denoted as JJU-1) was synthesized via FeCl<sub>3</sub>-promoted oxidative coupling polymerization. By virtue of a porous skeleton and a light/heat responsive azo functional group, this task-specific JJU-1 displays a reversible stimuli-responsive adsorption property triggered by UV irradiation and heat treatment. The initial Brunauer–Emmet–Teller (BET) surface area of this porous material is 467 m<sup>2</sup> g<sup>–1</sup>. The CO<sub>2</sub> sorption isotherms exhibit a slight decrease after UV irradiation because of the <i>trans</i> to <i>cis</i> conversion of the azo functional skeleton. It is worth mentioning that the responsive CO<sub>2</sub> adsorption performance can be recycled for three cycles via alternating external stimuli, confirming the excellently reversible switchability of <i>trans</i>-to-<i>cis</i> isomerization and controllable CO<sub>2</sub> adsorption. |
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ISSN: | 1420-3049 |