A1 Journal article (refereed)
Photo-Induced Cluster-to-Cluster Transformation of [Au37–xAgx(PPh3)13Cl10]3+ into [Au25–yAgy(PPh3)10Cl8]+ : Fragmentation of a Trimer of 8-Electron Superatoms by Light (2021)


Qin, Z., Wang, J., Sharma, S., Malola, S., Wu, K., Häkkinen, H., & Li, G. (2021). Photo-Induced Cluster-to-Cluster Transformation of [Au37–xAgx(PPh3)13Cl10]3+ into [Au25–yAgy(PPh3)10Cl8]+ : Fragmentation of a Trimer of 8-Electron Superatoms by Light. Journal of Physical Chemistry Letters, 12, 10920-10926. https://doi.org/10.1021/acs.jpclett.1c02863


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Publication details

All authors or editors: Qin, Zhaoxian; Wang, Junhui; Sharma, Sachil; Malola, Sami; Wu, Kaifeng; Häkkinen, Hannu; Li, Gao

Journal or series: Journal of Physical Chemistry Letters

eISSN: 1948-7185

Publication year: 2021

Publication date: 04/11/2021

Volume: 12

Pages range: 10920-10926

Publisher: American Chemical Society (ACS)

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1021/acs.jpclett.1c02863

Publication open access: Not open

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Abstract

We present the photoinduced size/structure transformation of [Au37−xAgx(PPh3)13Cl10]3+ (M37) into [Au25−yAgy(PPh3)10Cl8]+ (M25) cluster. Single-crystal X-ray diffraction revealed that M37 has a tri-icosahedron M36 metal core assembled via the fusion of three Au7Ag6 icosahedrons in a cyclic fashion and that the M36 core is further protected by phosphine and chloride ligands. The M37 cluster is found to be highly sensitive toward ambient light, and the M37 → M25 transition is observed with 530 nm irradiation, monitored by time-dependent UV−vis spectroscopy, electrospray ionization mass spectrometry (ESI-MS), and femtosecond transient absorption spectroscopy. Linear-response time-dependent DFT calculations indicated that the strong absorption of the M37 cluster close to 500 nm induces an antibonding-type configuration in the induced electron density within the plane of the three 8-electron systems, possibly promoting dissociation of one of the 8-electron superatoms. This theoretical result supports the experimental observation of the sensitivity of the M37 → M25 transition to 530 nm irradiation.


Keywords: nanoparticles; clusters; gold; photochemistry

Free keywords: light; metals; gold; cluster chemistry; metal clusters


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Ministry reporting: Yes

Reporting Year: 2021

JUFO rating: 3


Last updated on 2022-19-08 at 19:50