Applications of Polymer, Composite, and Coating Materials
- Jian Zeng
Jian Zeng
Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, P. R. China
Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
School of Materials Science and Engineering, Tianjin University, Tianjin 300072, P. R. China
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- Wei Yu
Wei Yu
Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
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- Haomin Xu
Haomin Xu
Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
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- Xiangyu Zhang
Xiangyu Zhang
Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
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- Qinghua Xu
Qinghua Xu
Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
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- Jiong Lu
Jiong Lu
Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
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- Kian Ping Loh
Kian Ping Loh
Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
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- Jishan Wu*
Jishan Wu
Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, P. R. China
Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore
*Email: [emailprotected]
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ACS Applied Materials & Interfaces
Cite this: ACS Appl. Mater. Interfaces 2025, XXXX, XXX, XXX-XXX
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https://pubs.acs.org/doi/10.1021/acsami.5c03943
Published April 25, 2025
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Photosensitization by photoactive materials requires well-designed molecular engineering to enable continuous photochemical processes. However, developing a heavy-atom-free (HAF) strategy to enhance the photoactivity of photosensitizers remains a significant challenge. In this study, we introduce a novel strategy to enhance photosensitization by incorporating benzophenone-rich components into 3D polymers (BQP1 and BQP2) and the 2D covalent organic framework (BQ-TMT COF). This incorporation accelerates both charge carrier separation and intersystem crossing, thereby significantly improving photo-to-chemical energy conversion and electron transfer reactions. Notably, the crystalline BQ-TMT COF enables efficient photocatalytic molecular O2 activation, producing both 1O2 and O2·– with high efficiency and recyclability. It demonstrates selective photocatalytic oxidation in 1O2-mediated sulfide transformations. Moreover, the material performs well in O2·–-mediated oxidation, including the hydroxylation of boronic acids and oxidation of amines to imines. The BQ-TMT COF-based photoelectrode generates a photocurrent of approximately 20.7 μA·cm–2 at 0.4 V vs RHE and achieves a high photocatalytic hydrogen production rate. Our study demonstrates a HAF heterogeneous photosensitizer with efficient photoactive small molecule activation through molecular engineering.
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- Covalent organic frameworks
- Mixtures
- Oxidation
- Oxygen
- Photocatalysts
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ACS Applied Materials & Interfaces
Cite this: ACS Appl. Mater. Interfaces 2025, XXXX, XXX, XXX-XXX
Click to copy citationCitation copied!
Published April 25, 2025
Publication History
Received
Accepted
Revised
Published
online
© 2025 American Chemical Society
Request reuse permissions
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