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Anion‐Directed Regulation of Structures and Luminescence of Heterometallic Clusters.
- Source :
- Angewandte Chemie; 6/20/2022, Vol. 134 Issue 25, p1-5, 5p
- Publication Year :
- 2022
-
Abstract
- Anions have been used to regulate the structures and luminescence of heterometallic clusters. Introducing ClO4− into orange‐emissive, butterfly‐like [(C)(Au‐PPhpy2)6Ag4](BF4)6 (1, PPhpy2=bis(2‐pyridyl)phenylphosphine) leads to the formation of red‐emissive [(C)(Au‐PPhpy2)6Ag5(ClO4)3](ClO4)4 (2) with a novel trigonal bipyramidal structure; employing PhCO2− gives yellow‐emissive, hexagram‐like [(C)(Au‐PPhpy2)6Ag6(PhCO2)3](BF4)5 (3). Notably, 1 exhibits weak luminescence in CH2Cl2/CH3OH=1 : 1 (v : v) with a quantum yield (QY) of 0.05, whereas it was dramatically increased to 0.49 and 0.83 for 2 and 3, respectively. Theoretical calculation confirms that the involvement of anions in the electronic structures is responsible for the shifts of emission. The high QYs of 2 and 3 are attributed to the protection provided by ligands and anions. This work demonstrates that anions may serve as an extra designable factor beyond just counterions for functional metal clusters. [ABSTRACT FROM AUTHOR]
- Subjects :
- LUMINESCENCE
ELECTRONIC structure
ANIONS
METAL clusters
Subjects
Details
- Language :
- English
- ISSN :
- 00448249
- Volume :
- 134
- Issue :
- 25
- Database :
- Complementary Index
- Journal :
- Angewandte Chemie
- Publication Type :
- Academic Journal
- Accession number :
- 157398365
- Full Text :
- https://doi.org/10.1002/ange.202201549