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Photochemical Insights on Intramolecular Dye-Sensitized Free-Radical Processes with a Quinoline Antenna

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journal contribution
posted on 29.06.2022, 13:59 authored by Stefania ImpellizzeriStefania Impellizzeri
Under mild ultraviolet illumination, a quinoline dye acts as a molecular ‘antenna’ to promote the reactivity of chemically coupled TEMPO toward H abstraction to form the corresponding N-hydroxylamine. The hydrogen can also be abstracted from a polymer matrix (R), and subsequent linkage of the dye-nitroxide to the polymer skeleton can occur. In all cases, the intramolecular quenching pathway is suppressed and the fluorescence of the quinoline dye is restored.