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Polyoxometalate‐Ionic Liquids (POM‐ILs) as Anticorrosion and Antibacterial Coatings for Natural Stones
Author(s) -
Misra Archismita,
Franco Castillo Isabel,
Müller Daniel P.,
González Carolina,
EyssautierChuine Stéphanie,
Ziegler Andreas,
de la Fuente Jesús M.,
Mitchell Scott G.,
Streb Carsten
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201809893
Subject(s) - polyoxometalate , corrosion , biofilm , ionic liquid , weathering , materials science , chemical engineering , coating , metallurgy , chemistry , organic chemistry , composite material , geology , catalysis , engineering , geochemistry , bacteria , paleontology
Corrosion of stone by acid rain and deterioration from biofilms are global problems for industrial and residential buildings as well as cultural heritage, such as statues or historic buildings. Herein we show how typical building stones can be protected from corrosion (“weathering”) and biofilm formation (“biodeterioration”) by application of thin films of polyoxometalate‐based ionic liquids (POM‐ILs). Stone samples are coated with hydrophobic, acid resistant POM‐ILs featuring biocidal properties. Exposure of the samples to simulated acid rain showed negligible corrosion compared to the significant deterioration of unprotected samples; in addition the biocidal properties of the POM‐ILs suppress the formation of biofilms on coated stone slabs. A new class of modular molecular materials for protecting stones can now be developed for use in construction, environmental protection, and cultural heritage preservation.