Thiophene-based photocatalyst for exciplex-mediated singlet oxygen generation and H 2 O 2 production (opens in new tab)

Among reactive oxygen species, singlet oxygen (1O2) is the preferred agent for photooxygenation reactions owing to its exceptional reactivity and selectivity. However, the coexistence of reactive oxygen species such as O2·−, ·OH and 1O2 is a long-standing challenge in photocatalytic systems, as it leads to undesired deactivation pathways (for example, Haber–Weiss reactions) and reduced selectivity. Here we design a thiophene-anthraquinone photocatalyst, named AQ-S, which generates 1O2 through...