Ultrastable Mesoporous Hydrogen-Bonded Organic Framework-Based Fiber Composites toward Mustard Gas Detoxification

Kaikai Ma, Peng Li*, John H. Xin, Yongwei Chen, Zhijie Chen, Subhadip Goswami, Xiaofeng Liu, Satoshi Kato, Haoyuan Chen, Xuan Zhang, Jiaquan Bai, Megan C. Wasson, Rodrigo R. Maldonado, Randall Q. Snurr, Omar K. Farha

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Creating crystalline porous materials with large pores is typically challenging due to undesired interpenetration, staggered stacking, or weakened framework stability. Here, we report a pore size expansion strategy by “shape-matching” intermolecular π-π stacking interactions in a series of two-dimensional (2D) hydrogen-bonded organic frameworks (HOFs), HOF-10x (x = 0,1,2), self-assembled from pyrene-based tectons with systematic elongation of π-conjugated molecular arms. This strategy successfully avoids interpenetration or staggered stacking and expands the pore size of HOF materials to access mesoporous HOF-102, which features a surface area of ∼2,500 m2/g and the largest pore volume (1.3 cm3/g) to date among all reported HOFs. More importantly, HOF-102 shows significantly enhanced thermal and chemical stability as evidenced by powder X-ray diffraction and N2 isotherms after treatments in challenging conditions. Such stability enables the easy fabrication of a HOF-102/fiber composite for the efficient photochemical detoxification of a mustard gas simulant.

Original languageEnglish (US)
Article number100024
JournalCell Reports Physical Science
Volume1
Issue number2
DOIs
StatePublished - Feb 26 2020

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Materials Science(all)
  • Chemistry(all)
  • Energy(all)
  • Engineering(all)

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