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1. Dynamic artificial light-harvesting systems based on rotaxane dendrimers

Author

Wei-Jian Li, Xu-Qing Wang, Wei Wang, Zhubin Hu, Yubin Ke, Hanqiu Jiang, Chunyong He, Xueli Wang, Yi-Xiong Hu, Pei-Pei Jia, Panchao Yin, Jinquan Chen, Haitao Sun, Zhenrong Sun, Lin Xu, and Hai-Bo Yang

Subjects
Light harvesting, Energy transfer, Rotaxane dendrimer, Anthracene, Zinc(II) porphyrin, Science (General), Q1-390
Abstract

Although the preparation of artificial light-harvesting systems (ALHs) has attracted increasing attention, dynamic regulation of antenna effect in ALHs has been still a major challenge. Herein, we constructed a family of new rotaxane dendrimers containing up to fifty-six anthracene moieties (energy donor) on the wheels of the rotaxane units and one zinc(II) porphyrin moiety (energy acceptor) at the central core. Notably, the resultant rotaxane dendrimers incorporate a large number of rotaxane subunits on the dendritic skeleton in a monodisperse manner, which thus allowed for the high energy transfer efficiencies and antenna effects. More importantly, with the addition and removal of acetate anions, the directional and reversible motion of rotaxane unit on each axis was realized, thus leading to dynamic regulation of antenna effect in resultant rotaxane dendrimers.

Published
2020
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2. Dynamic artificial light-harvesting systems based on rotaxane dendrimers

Author

Yubin Ke, Haitao Sun, Hanqiu Jiang, Zhubin Hu, Wei Wang, Hai-Bo Yang, Pei-Pei Jia, Wei-Jian Li, Jinquan Chen, Lin Xu, Yi-Xiong Hu, Zhenrong Sun, Xu-Qing Wang, Xueli Wang, Panchao Yin, and Chunyong He

Subjects
Anthracene, Rotaxane, Polymers and Plastics, Dispersity, Antenna effect, Zinc(II) porphyrin, General Chemistry, Combinatorial chemistry, Acceptor, Porphyrin, Surfaces, Coatings and Films, Light harvesting, Rotaxane dendrimer, chemistry.chemical_compound, chemistry, Energy transfer, Dendrimer, Materials Chemistry, Moiety, lcsh:Science (General), lcsh:Q1-390
Abstract

Although the preparation of artificial light-harvesting systems (ALHs) has attracted increasing attention, dynamic regulation of antenna effect in ALHs has been still a major challenge. Herein, we constructed a family of new rotaxane dendrimers containing up to fifty-six anthracene moieties (energy donor) on the wheels of the rotaxane units and one zinc(II) porphyrin moiety (energy acceptor) at the central core. Notably, the resultant rotaxane dendrimers incorporates a large number of rotaxane subunits on the dendritic skeleton in a monodisperse manner, which thus allowed for the high energy transfer efficiencies and antenna effects. More importantly, with the addition and removal of acetate anions, the directional and reversible motion of rotaxane unit on each axis was realized, thus leading to dynamic regulation of antenna effect in resultant rotaxane dendrimers.

Published
2020

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