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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
Main Authors: Liu, Die, Chen, Mingzhao, Li, Kaixiu, Li, Zhengguang, Huang, Jian, Wang, Jun, Jiang, Zhilong, Zhang, Zhe, Xie, Tingzheng, Newkome, George R, Wang, Pingshan
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cited_by cdi_FETCH-LOGICAL-a324t-1675f43d07d3ce234e5b05eba265705472e1d796819b0ccbc651b861c23901ca3
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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
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title Giant Truncated Metallo-Tetrahedron with Unexpected Supramolecular Aggregation Induced Emission Enhancement
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