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DOE OSTI · 1661861

Giant Concentric Metallosupramolecule with Aggregation-Induced Phosphorescent Emission

Li, Yiming·Huo, Gui-Fei·Liu, Bingqing·Song, Bo·Zhang, Yuan·Qian, Xiaomin·Wang, Heng·Yin, Guang-Qiang·Filosa, Alexander·Sun, Wenfang·Hla, Saw Wai·Yang, Hai-Bo·Li, Xiaopeng
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Abstract

Fluorescent metallo-supramolecules have received considerable attention due to their precisely-controlled dimensions as well as the tunable photophysical and photochemical properties. However, phosphorescent analogues are still rare, and limited to small structures with low-temperature phosphorescence. In this work, we report the self-assembly and photophysical studies of a giant, discrete metallo-supramolecular concentric hexagon functionalized with six alkynylplatinum(II) bzimpy moieties. With a size larger than 10 nm and molecular weight higher than 26,000 Da, the assembled terpyridine-based supramolecule displayed phosphorescent emission at room temperature. Moreover, the supramolecule exhibited enhanced aggregation-induced phosphorescent emission compared to the ligand by tuning the aggregation states through intermolecular interactions, and significant enhancement of emission to CO 2 gas.

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRYAggregation-Induced EmissionMetallo-SupramoleculePhosphorescenceSelf-AssemblyTerpyridine

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Li, Yiming, Huo, Gui-Fei, Liu, Bingqing, Song, Bo, Zhang, Yuan, Qian, Xiaomin, Wang, Heng, Yin, Guang-Qiang, Filosa, Alexander, Sun, Wenfang, Hla, Saw Wai, Yang, Hai-Bo, Li, Xiaopeng. 2020-08-14. Giant Concentric Metallosupramolecule with Aggregation-Induced Phosphorescent Emission. https://doi.org/10.1021/jacs.0c06680

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