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Chemosensors 2018, 6(4), 48; https://doi.org/10.3390/chemosensors6040048

Recent Progress on the Evolution of Pourbaix Sensors: Molecular Logic Gates for Protons and Oxidants

Department of Chemistry, Faculty of Science, University of Malta, MSD 2080 Msida, Malta
Received: 8 October 2018 / Revised: 26 October 2018 / Accepted: 29 October 2018 / Published: 31 October 2018
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Abstract

Recent progress in the area of molecular logic, in particular molecules capable of sensing for acidity and oxidizability, are gathered together in this short review. Originally proposed as AND logic gates that provide a high fluorescence output when simultaneously protonated and oxidized, the concept has been extended from two-input to three-input variants and to include molecules that function as INHIBIT logic gates. Photochemical concepts such as photoinduced electron transfer (PET) and internal charge transfer (ICT) are exploited as favorite design concepts. This review highlights the evolution of Pourbaix sensors with anthracene, pyrazoline, and naphthalimide fluorophores. Future applications abound in various disciplines from corrosion science, material science, geochemistry to cell imaging. View Full-Text
Keywords: molecular logic gate; photoinduced electron transfer; internal charge transfer; fluorescence; luminescence; molecular sensor; redox indicator; pH indicator molecular logic gate; photoinduced electron transfer; internal charge transfer; fluorescence; luminescence; molecular sensor; redox indicator; pH indicator
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Magri, D.C. Recent Progress on the Evolution of Pourbaix Sensors: Molecular Logic Gates for Protons and Oxidants. Chemosensors 2018, 6, 48.

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