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Giant Concentric Metallosupramolecule with Aggregation-Induced Phosphorescent Emission

Journal Article · · Journal of the American Chemical Society
DOI:https://doi.org/10.1021/jacs.0c06680· OSTI ID:1661861
 [1];  [2];  [3];  [4];  [5];  [6];  [7];  [7];  [6];  [3];  [8];  [2];  [7]
  1. Univ. of South Florida, Tampa, FL (United States); Shenzhen Univ. (China)
  2. East China Normal Univ., Shanghai (China). Shanghai Key Lab. of Green Chemistry and Chemical Processes
  3. North Dakota State Univ., Fargo, ND (United States)
  4. Northwestern Univ., Evanston, IL (United States)
  5. Old Dominion Univ., Norfolk, VA (United States)
  6. Univ. of South Florida, Tampa, FL (United States)
  7. Shenzhen Univ. (China)
  8. Argonne National Lab. (ANL), Lemont, IL (United States)
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 CO2 gas.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1661861
Journal Information:
Journal of the American Chemical Society, Journal Name: Journal of the American Chemical Society Journal Issue: 34 Vol. 142; ISSN 0002-7863
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

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