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Title: | Pourbaix sensors in polyurethane molecular logic-based coatings for early detection of corrosion |
Authors: | Scerri, Glenn J. Spiteri, Jake C. Magri, David C. |
Keywords: | Charge transfer Corrosion and anti-corrosives Chemistry -- Research Molecules -- Research |
Issue Date: | 2021 |
Publisher: | Royal Society of Chemistry |
Citation: | Scerri, G. J., Spiteri, J. C., & Magri, D. C. (2021). Pourbaix sensors in polyurethane molecular logic-based coatings for early detection of corrosion. Materials Advances, 2021, 2, 434-439. |
Abstract: | The cost of corrosion to the world economy is estimated to be in excess of US$2.5 trillion per year. Herein we present a strategy for the early detection of corrosion using purposely designed molecules with on-board parallel processing in a polyurethane coating on mild steel. The proof-of-concept is demonstrated with perylenediimide and 4-amino-1,8-naphthalimide-based molecules that function as H+, Fe3+-driven AND logic gates for high acidity and oxidising conditions. The onset of corrosion is detected by an enhanced yellow-green fluorescence (>500 nm). The extent of fluorescence enhancement is viewed by confocal fluorescence microscopy. The applicability of logic-based molecules represents a method for the non-destructive and early detection of corrosion long before the metal surface suffers any permanent damage. |
Description: | Electronic supplementary information (ESI) available: Synthesis, characterisation and spectra. See DOI: 10.1039/d0ma00839g |
URI: | https://www.um.edu.mt/library/oar/handle/123456789/70806 |
Appears in Collections: | Scholarly Works - FacSciChe |
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Pourbaix_sensors_in_polyurethane_molecular_logic-based_coatings_for_early_detection_of_corrosion_2021.pdf Restricted Access | 2.58 MB | Adobe PDF | View/Open Request a copy |
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