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Title: Effective photocatalytic initiation of reactive oxygen species by a photoactive covalent organic framework for oxidation reactions
Authors: Li, Yangyang
Luan, Tian-Xiang
Cheng, Ke
Zhang, Deshan
Fan, Weiliu
Li, Pei-Zhou
Zhao, Yanli
Keywords: Science::Chemistry
Issue Date: 2022
Source: Li, Y., Luan, T., Cheng, K., Zhang, D., Fan, W., Li, P. & Zhao, Y. (2022). Effective photocatalytic initiation of reactive oxygen species by a photoactive covalent organic framework for oxidation reactions. ACS Materials Letters, 4(6), 1160-1167.
Project: RG3/21
Journal: ACS Materials Letters
Abstract: Reactive oxygen species (ROS) play a vital role in both chemistry and physiology. Developing effective photocatalysts becomes a feasible approach to trigger the generation of ROS. Herein, a photosensitive covalent organic framework (COF) was rationally designed and constructed by incorporating the photoactive triphenylamine moieties into its skeleton, characterizations of which not only showed the success formation of the highly crystalline and stable framework, but also revealed the photoactive property derived from triphenylamine-based building block. Electron paramagnetic resonance measurements displayed that the COF was an effective photocatalyst for generating ROS with one unpaired electron, that is, superoxide radical anion (O2•-). Subsequently, its high efficiency, selectivity, and reusability in photocatalytic aerobic oxidation of sulfides confirmed that the COF is a promising photocatalyst in the applications of ROS-involved reactions, demonstrating that precisely embedding organic photochromic groups into COFs could be a powerful strategy to fabricate metal-free heterogeneous photocatalysts for targeted reactions.
ISSN: 2639-4979
DOI: 10.1021/acsmaterialslett.2c00236
Rights: © 2022 American Chemical Society. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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