6533b85efe1ef96bd12bfc47

RESEARCH PRODUCT

Surface Functionalization of Metal–Organic Framework Crystals with Catechol Coatings for Enhanced Moisture Tolerance

Javier Castells-gilCarlos Marti-gastaldoSergio TatayDaniel Ruiz-molinaFernando NovioNatalia M. Padial

subject

Materials scienceInorganic chemistry02 engineering and technologyMetal−organic frameworks010402 general chemistryHydrophobic coating01 natural sciencesCatalysischemistry.chemical_compoundGeneral Materials ScienceMaterialsCatecholase biomimeticsCatecholMoistureSorptionQuímicaWater stability021001 nanoscience & nanotechnologySuperhydrophobic coating0104 chemical scienceschemistrySurface functionalizationSurface modificationMetal-organic framework0210 nano-technologyScience technology and society

description

Robust catechol coatings for enhanced moisture tolerance were produced in one step by direct reaction of Hong Kong University of Science and Technology (HKUST) with synthetic catechols. We ascribe the rapid formation of homogeneous coatings around the metal–organic framework particles to the biomimetic catalytic activity of Cu(II) dimers in the external surface of the crystals. Use of fluorinated catechols results in hydrophobic, permeable coatings that protect HKUST from water degradation while retaining close to 100% of its original sorption capacity.

10.1021/acsami.7b15564http://dx.doi.org/10.1021/acsami.7b15564