Mechanochemical synthesis of pillar[5]quinone derived multi-microporous organic polymers for radioactive organic iodide capture and storage

Kecheng Jie, Yujuan Zhou, Qi Sun, Bo Li, Run Zhao, Jiang De-en, Wei Guo, Hao Chen, Zhenzhen Yang, Feihe Huang and Sheng Dai ()
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Kecheng Jie: The University of Tennessee
Yujuan Zhou: Zhejiang University
Qi Sun: Zhejiang University
Bo Li: University of California
Run Zhao: Zhejiang University
Jiang De-en: University of California
Wei Guo: The University of Tennessee
Hao Chen: The University of Tennessee
Zhenzhen Yang: The University of Tennessee
Feihe Huang: Zhejiang University
Sheng Dai: The University of Tennessee

Nature Communications, 2020, vol. 11, issue 1, 1-9

Abstract: Abstract The incorporation of supramolecular macrocycles into porous organic polymers may endow the material with enhanced uptake of specific guests through host−guest interactions. Here we report a solvent and catalyst-free mechanochemical synthesis of pillar[5]quinone (P5Q) derived multi-microporous organic polymers with hydrophenazine linkages (MHP-P5Q), which show a unique 3-step N2 adsorption isotherm. In comparison with analogous microporous hydrophenazine-linked organic polymers (MHPs) obtained using simple twofold benzoquinones, MHP-P5Q is demonstrated to have a superior performance in radioactive iodomethane (CH3I) capture and storage. Mechanistic studies show that the rigid pillar[5]arene cavity has additional binding sites though host−guest interactions as well as the halogen bond (−I⋯N = C−) and chemical adsorption in the multi-microporous MHP-P5Q mainly account for the rapid and high-capacity adsorption and long-term storage of CH3I.

Date: 2020
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DOI: 10.1038/s41467-020-14892-y

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