Supramolecular packing dominant photocatalytic oxidation and anticancer performance of PDI
By Jun Wang, Di Liu, Yongfa Zhu, Shuyun Zhou, S. Guan. Applied Catalysis B: Environmental, 2018
176 citations recorded by the source corpus.
Abstract The development of organic supramolecular photocatalytic materials requires a deeper understanding of the structure-activity relationship. Herein, the effects of H/J-type stacking on the photocatalytic mechanism and activity of PDI have been investigated. As a face-to-face arrangement, H-aggregates have higher π-electron conjugation and show more semiconductor characteristics, which results in higher carrier separation and migration efficiency under irradiation. Whereas, J-aggregates exhibit more molecular properties due to its low π-electron conjugation caused by head-to-tail stacking mode. As a result, H-aggregated PDI mainly forms superoxide radicals ( O2−) and holes (h+) through electron-transfer (ET). In contrast, J-aggregated PDI mainly generates singlet oxygen species (1O2) via energy-transfer (EnT). Benefit from the stronger oxidizability of O2− and h+, H-aggregated PDI shows higher photocatalytic activity for small molecule degradation and oxygen evolution under visible light. Whereas, J-aggregated PDI exhibits potential application in photocatalytic anti-cancer treatment owing to its high 1O2 quantum yields (0.66) under red light radiation. Our findings may provide a guidance for the development of supramolecular organic photocatalytic materials.
Subfields: Inorganic Chemistry, Materials Chemistry, Renewable Energy, Sustainability and the Environment
View Paper: https://www.semanticscholar.org/paper/6535c64460c86505eb65e2f61ee5463fddfe573c
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In Inorganic Chemistry
In Materials Chemistry
In Renewable Energy, Sustainability and the Environment
Citations in the corpus
- Efficient and stable photocatalytic degradation of tetracycline wastewater by 3D Polyaniline/Perylene diimide organic heterojunction under visible light irradiation (2020, background): “77 eV, respectively, which are closed to the previously reported literature [21,26].”