聚集诱导发光光催化剂用于快速且耐氧的自由基光聚合

doi:10.6023/cjoc202605006

研究论文

聚集诱导发光光催化剂用于快速且耐氧的自由基光聚合

陈怡萱^a, 赵征^a,b,*

^a香港中文大学(深圳)理工学院广东省聚集体科学基础研究卓越中心广东深圳 518172;
^b香港中文大学(深圳)理工学院附属第二医院聚集诱导发光临床转化研究中心,广东深圳 518172

收稿日期:2026-05-07 修回日期:2026-07-06
基金资助:
本研究得到国家重点研发计划(2023YFB3810001）、国家自然科学基金(52333007 和 52273197）、国家自然科学基金重大项目(22595400 和 22595401）、深圳市科技创新委员会(KQTD20210811090142053 和 JCYJ20230807114213027）以及广东省聚集科学基础研究中心的资助; 作者团队同时感谢香港中文大学(深圳）材料制备与表征中心在材料表征方面提供的支持

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

Yixuan Chen^a, Zheng Zhao^a,b,*

^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:2026-05-07 Revised:2026-07-06
Contact: ^*E-mail: zhaozheng@cuhk.edu.cn
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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摘要/Abstract

光聚合反应相较于传统的热引发聚合具有显著优势,例如更好的时间可控性以及更快的反应动力学。然而,传统自由基光固化体系仍面临氧阻聚与光引发剂端基残留的问题。为此,本研究开发了一类基于苯并噻二唑衍生物(PBTH、BBTH)的新型光催化剂。通过引入给体-受体 (D-A) 结构,光吸收能力和分子内电荷转移 (ICT) 能力得到提升,从而增强了光催化性能。机理研究表明：激发态光催化剂从叔胺添加剂 (TMEDA) 攫取电子生成自由基阴离子和胺烷基自由基,进而引发丙烯酸酯单体的聚合。催化剂在聚合前后结构保持不变,且不通过共价键连接于聚合物链末端。PBTH在0.37 wt%的极低负载量下,于常氧条件下数分钟内即可实现近乎完全转化,并成功用于“AIE”图案的光刻加工。

关键词: 光催化, 聚集诱导发光 (AIE), 紫外光聚合

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

引用此文

陈怡萱, 赵征. 聚集诱导发光光催化剂用于快速且耐氧的自由基光聚合[J]. 有机化学, doi: 10.6023/cjoc202605006.

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

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