Surface Functionalization of Metal−Organic Framework Crystals with Catechol Coatings for Enhanced Moisture Tolerance Castells-Gil, Javier Novio, Fernando Muñoz Padial, Natalia Tatay, Sergio Ruíz-Molina, Daniel Martí-Gastaldo, Carlos 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. 2025-01-30T09:36:04Z 2025-01-30T09:36:04Z 2017-11-28 journal article ACS Appl. Mater. Interfaces, 2017, 9 (51), 44641–44648 https://hdl.handle.net/10481/101155 10.1021/acsami.7b15564 eng http://creativecommons.org/licenses/by-nc-nd/3.0/ open access Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License American Chemical Society