A supramolecular photosensitizer based on triphenylamine and pyrazine with aggregation-induced emission properties for high-efficiency photooxidation reactions,Journal of Colloid and Interface Science

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A supramolecular photosensitizer based on triphenylamine and pyrazine with aggregation-induced emission properties for high-efficiency photooxidation reactions
Journal of Colloid and Interface Science ( IF 9.4 ) Pub Date : 2024-03-30 , DOI: 10.1016/j.jcis.2024.03.197
Rui-Zhi Dong ₁ , Xiao-Han Shi ₁ , Hui Liu ₁ , Shengsheng Yu ₁ , Kai-Kai Niu ₁ , Ling-Bao Xing ₁

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Recently, there has been a great interest in the study of photocatalysts (PCs) and photosensitizers (PSs) in the field of organic photocatalysis. In the present study, a pure organic thermally activated delayed fluorescence (TADF) molecule 4,4′-(12-(pyridin-4-yl)dibenzo[,]pyrido[2,3-b]quinoxaline-3,6-diyl)bis(N,-diphenylaniline) (DPQ-TPA) was designed and synthesized, which not only have excellent TADF property and small energy splitting (Δ), but also can self-assembly in water to form cross-linked nanoparticles with exceptional aggregation-induced emission (AIE) characteristics. DPQ-TPA exhibits excellent remarkable selectivity and notably enhances the production capacity of reactive oxygen species (ROS), particularly O, which was employed as a highly effective photocatalyst in the photooxidation reaction of phosphine and hydroazobenzenes under blue light irradiation with high yields up to 94% and 91%, respectively. This work expands the potential application of (donor-acceptor) D-A type AIE-TADF molecules in photocatalytic organic transformations through supramolecular self-assembly.

中文翻译：

一种基于三苯胺和吡嗪的超分子光敏剂，具有聚集诱导发射特性，可用于高效光氧化反应

近年来，有机光催化领域对光催化剂（PC）和光敏剂（PS）的研究引起了极大的兴趣。在本研究中，纯有机热激活延迟荧光（TADF）分子4,4′-(12-(吡啶-4-基)二苯并[,]吡啶并[2,3-b]喹喔啉-3,6-二基设计合成了双(N,-二苯基苯胺)(DPQ-TPA)，它不仅具有优异的TADF性能和较小的能量分裂(Δ)，而且可以在水中自组装形成具有优异聚集性的交联纳米粒子-诱导发射（AIE）特性。 DPQ-TPA表现出优异的选择性，显着提高活性氧（ROS）的生产能力，特别是O，它被用作蓝光照射下膦和氢偶氮苯的光氧化反应中的高效光催化剂，产率高达94分别为 % 和 91%。这项工作通过超分子自组装扩展了（供体-受体）DA型AIE-TADF分子在光催化有机转化中的潜在应用。

更新日期：2024-03-30

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