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- Title
Silvery fullerene in Ag102 nanosaucer.
- Authors
Wang, Zhi; Wang, Yuchen; Zhang, Chengkai; Zhu, Yan-Jie; Song, Ke-Peng; Aikens, Christine M; Tung, Chen-Ho; Sun, Di
- Abstract
Despite the discovery of a series of fullerenes and a handful of noncarbon clusters with the typical topology of I h-C60, the smallest fullerene with a large degree of curvature, C20, and its other-element counterparts are difficult to isolate experimentally. In coinage metal nanoclusters (NCs), the first all-gold fullerene, Au32, was discovered after a long-lasting pursuit, but the isolation of similar silvery fullerene structures is still challenging. Herein, we report a flying saucer-shaped 102-nuclei silver NC (Ag102) with a silvery fullerene kernel of Ag32, which is embraced by a robust cyclic anionic passivation layer of (KPO4)10. This Ag32 kernel can be viewed as a non-centered icosahedron Ag12 encaged into a dodecahedron Ag20, forming the silvery fullerene of Ag12@Ag20. The anionic layer (KPO4)10 is located at the interlayer between the Ag32 kernel and Ag70 shell, passivating the Ag32 silvery fullerene and templating the Ag70 shell. The t BuPhS− and CF3COO− ligands on the silver shell show a regioselective arrangement with the 60 t BuPhS− ligands as expanders covering the upper and lower of the flying saucer and 10 CF3COO− as terminators neatly encircling the edges of the structure. In addition, Ag102 shows excellent photothermal conversion efficiency (η) from the visible to near-infrared region (η = 67.1% ± 0.9% at 450 nm, 60.9% ± 0.9% at 660 nm and 50.2% ± 0.5% at 808 nm), rendering it a promising material for photothermal converters and potential application in remote laser ignition. This work not only captures silver kernels with the topology of the smallest fullerene C20, but also provides a pathway for incorporating alkali metal (M) into coinage metal NCs via M-oxoanions.
- Subjects
ALKALI metals; PHOTOTHERMAL conversion; UNIDENTIFIED flying objects; PASSIVATION; COINAGE; PHOTOTHERMAL effect; FULLERENES
- Publication
National Science Review, 2024, Vol 11, Issue 7, p1
- ISSN
2095-5138
- Publication type
Article
- DOI
10.1093/nsr/nwae192