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An intelligence ink for oxygen

Lee, Soo-Keun and Mills, Andrew and Lepre, Anne (2004) An intelligence ink for oxygen. Chemical Communications (London), 2004 (17). pp. 1912-1913. ISSN 0009-241X

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A generic ink formulation is described, comprising semiconductor photocatalyst particles, a brightly-coloured redox dye, a mild reducing agent, a polymer and a solvent, that creates an irreversible, reusable, UV-light-activated, colorimetric indicator or intelligence ink for oxygen.