
Journal of the American Chemical Society p. 14638 - 14648 (2020)
Update date:2022-08-03
Topics:
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
Fluorescent metallosupramolecules 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. Herein, we report the self-assembly and photophysical studies of a giant, discrete metallosupramolecular concentric hexagon functionalized with six alkynylplatinum(II) bzimpy moieties. With a size larger than 10 nm and molecular weight higher than 26000 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 CO2 gas.
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