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Giant Truncated Metallo-Tetrahedron with Unexpected Supramolecular Aggregation Induced Emission Enhancement
The artificial synthesis of giant, three-dimensional, and shell-like architectures with growing complexity and novel functionalities is an especially challenging task for chemists. Fullerenes and self-assembled cages are remarkable examples that are proven milestones in the field of functional mater...
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Published in: | Journal of the American Chemical Society 2020-04, Vol.142 (17), p.7987-7994 |
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Main Authors: | , , , , , , , , , , |
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container_end_page | 7994 |
container_issue | 17 |
container_start_page | 7987 |
container_title | Journal of the American Chemical Society |
container_volume | 142 |
creator | Liu, Die Chen, Mingzhao Li, Kaixiu Li, Zhengguang Huang, Jian Wang, Jun Jiang, Zhilong Zhang, Zhe Xie, Tingzheng Newkome, George R Wang, Pingshan |
description | The artificial synthesis of giant, three-dimensional, and shell-like architectures with growing complexity and novel functionalities is an especially challenging task for chemists. Fullerenes and self-assembled cages are remarkable examples that are proven milestones in the field of functional materials. Herein, we present another unique system: a giant terpyridine-based truncated metallo-tetrahedral architecture that includes densely-packed ionic pairs with a significant internal cavity. This huge metallo-tetrahedron with a molecular weight up to 70 000 Da was self-assembled simultaneously with 64 components: 12 large antler-shaped ligands (5), 4 star-shaped ligands (6), and 48 Cd2+ ions. Surprisingly, the giant tetrahedron shows broad visible emission (400–640 nm) and aggregation induced emission enhancement (AIEE) via a hierarchical assembly into highly-ordered nanoaggregates. A tunable emission color and near white-light emission in mixed solvent systems were also achieved. The present work not only affords an effective approach to the creation of giant shell-like architectures that can be used to mimic biological viruses and chemical frameworks but also provides a new class of functional metallo-architectures. |
doi_str_mv | 10.1021/jacs.0c02366 |
format | article |
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title | Giant Truncated Metallo-Tetrahedron with Unexpected Supramolecular Aggregation Induced Emission Enhancement |
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