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0 202605006

DOI: https://doi.org/10.6023/cjoc202605006

ARTICLE

Aggregation-Induced Emission Photocatalysts for Fast and Oxygen-Tolerant Radical Photopolymerization

  • Yixuan Chen ,
  • Zheng Zhao
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  • aGuangdong Basic Research Center of Excellence for Aggregate Science, School of Science and Engineering, The Chinese University of Hong Kong (Shenzhen), Longgang, Shenzhen, Guangdong 518172, China;
    bClinical Translational Research Center of Aggregation-Induced Emission, The Second Affiliated Hospital, School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, China

Received date: 2026-05-07

  Revised date: 2026-07-06

  Online published: 2026-08-24

Supported by

National Key Research and Development Program of China (2023YFB3810001), the National Natural Science Foundation of China (52333007 and 52273197), the Major Project of the National Natural Science Foundation of China (22595400 and 22595401), the Science Technology Innovation Commission of Shenzhen Municipality (KQTD20210811090142053 and JCYJ20230807114213027), Guangdong Basic Research Center of Excellence for Aggregate Science. The authors also thank the Materials Characterization and Preparation Center of the Chinese University of Hong Kong (Shenzhen), for materials characterization.

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Abstract

Photopolymerization offers significant advantages over traditional thermally initiated polymerization, such as better temporal control and faster reaction kinetics. However, conventional systems suffer from oxygen inhibition and initiator end-group residue. Herein, we developed a series of benzothiadiazole-based photocatalysts (PBTH, BBTH). By introducing donor-acceptor (D-A) structures, light absorption and intramolecular charge transfer (ICT) capability are promoted, thereby enhancing the photocatalytic performance. Mechanistic studies reveal that the photoexcited PC abstracts an electron from the tertiary amine additive (TMEDA), generating a radical anion and an aminoalkyl radical, which subsequently initiates the polymerization of acrylate monomers. The photocatalyst remains intact and is not covalently incorporated into the polymer chain ends. With an extremely low loading of 0.37 wt%, PBTH achieved near-complete conversion within minutes under ambient conditions and was successfully employed in the photolithographic fabrication of an “AIE” pattern.

Key words： photocatalysis; aggregation-induce emission; UV photopolymerization

Cite this article

Yixuan Chen , Zheng Zhao . Aggregation-Induced Emission Photocatalysts for Fast and Oxygen-Tolerant Radical Photopolymerization[J]. Chinese Journal of Organic Chemistry, 0 : 202605006 . DOI: 10.6023/cjoc202605006

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