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The photocatalytic generation of hydrogen peroxide (H 2 O 2 ) from H 2 O and O 2 under visible light irradiation is a hopeful approach to achieve solar-to-chemical energy transformation. While the lack of specific redox reaction centers is still the main reason for low photocatalytic H 2 O 2 production efficiency, herein, we present a conjugated organic polymer (AQTEE-COP) containing anthraquinone redox centers by Sonogashira cross-coupling reaction between 2,6-dibromoanthraquinone (AQ) and 1,1,2,2-tetrakis(4-ethynylphenyl)ethene. The extended π-conjugated framework with an electron push−pull effect between electron-donating tetraphenylethene moieties and electron-withdrawing anthraquinone moieties not only broadened the visible light absorption range but also promoted the separation and migration of photo-induced charge carriers. Meanwhile, the anthraquinone moieties can serve as redox centers to accept photoinduced electrons and transfer them to adsorbed O 2 molecules for subsequent H 2 O 2 production. The well-defined structure of AQTEE-COP with task-specific anthracene redox centers provides molecular-level insights into the mechanistic understanding of the photocatalytic H 2 O 2 generation from H 2 O and O 2 . The AQTEE-COP exhibits efficient photocatalytic H 2 O 2 production with an initial rate of 3204 μmol g −1 h −1 under visible light (λ ≥ 400 nm) irradiation without any additional photosensitizers, organic scavengers, or co-catalysts. This article provides a protocol for the rational design of pre-functionalized conjugated organic polymerbased materials for solar-to-chemical energy transformation.

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