Imparting amphiphobicity on single-crystalline porous materials

Qi Sun, Hongming He, Wen-Yang Gao, Briana Aguila, Lukasz Wojtas, Zhifeng Dai, Jixue Li, Yu-Sheng Chen, Feng-Shou Xiao () and Shengqian Ma ()
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Qi Sun: Zhejiang University
Hongming He: University of South Florida
Wen-Yang Gao: University of South Florida
Briana Aguila: University of South Florida
Lukasz Wojtas: University of South Florida
Zhifeng Dai: Zhejiang University
Jixue Li: Electron Microscopy Centre, Zhejiang University
Yu-Sheng Chen: ChemMatCARS, Center for Advanced Radiation Sources, The University of Chicago
Feng-Shou Xiao: Zhejiang University
Shengqian Ma: University of South Florida

Nature Communications, 2016, vol. 7, issue 1, 1-7

Abstract: Abstract The sophisticated control of surface wettability for target-specific applications has attracted widespread interest for use in a plethora of applications. Despite the recent advances in modification of non-porous materials, surface wettability control of porous materials, particularly single crystalline, remains undeveloped. Here we contribute a general method to impart amphiphobicity on single-crystalline porous materials as demonstrated by chemically coating the exterior of metal-organic framework (MOF) crystals with an amphiphobic surface. As amphiphobic porous materials, the resultant MOF crystals exhibit both superhydrophobicity and oleophobicity in addition to retaining high crystallinity and intact porosity. The chemical shielding effect resulting from the amphiphobicity of the MOFs is illustrated by their performances in water/organic vapour adsorption, as well as long-term ultrastability under highly humidified CO2 environments and exceptional chemical stability in acid/base aqueous solutions. Our work thereby pioneers a perspective to protect crystalline porous materials under various chemical environments for numerous applications.

Date: 2016
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DOI: 10.1038/ncomms13300

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