A1 Journal article (refereed)
Electrocrystallization of Monolayer-Protected Gold Clusters : Opening the Door to Quality, Quantity, and New Structures (2017)

Antonello, S., Dainese, T., Pan, F., Rissanen, K., & Maran, F. (2017). Electrocrystallization of Monolayer-Protected Gold Clusters : Opening the Door to Quality, Quantity, and New Structures. Journal of the American Chemical Society, 139 (11), 4168-4174. doi:10.1021/jacs.7b00568

JYU authors or editors

Publication details

All authors or editors: Antonello, S.; Dainese, T.; Pan, Fangfang; Rissanen, Kari; Maran, F.

Journal or series: Journal of the American Chemical Society

ISSN: 0002-7863

eISSN: 1520-5126

Publication year: 2017

Volume: 139

Issue number: 11

Pages range: 4168-4174

Publisher: American Chemical Society

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1021/jacs.7b00568

Open Access: Open access publication published in a hybrid channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/53383

Abstract

Thiolate-protected metal clusters are materials of ever-growing importance in fundamental and applied research. Knowledge of their single-crystal X-ray structures has been instrumental to enable advanced molecular understanding of their intriguing properties. So far, however, a general, reliable, chemically clean approach to prepare single crystals suitable for accurate crystallographic analysis was missing. Here we show that single crystals of thiolate-protected clusters can be grown in large quantity and very high quality by electrocrystallization. This method relies on the fact that charged clusters display a higher solubility in polar solvents than their neutral counterparts. Nucleation of the electrogenerated insoluble clusters directly onto the electrode surface eventually leads to the formation of a dense forest of millimeter-long single crystals. Electrocrystallization of three known Au25(SR)180 clusters is described. A new cluster, Au25(S-nC5H11)18, was also prepared and found to crystallize by forming bundles of millimeter-long Au25 polymers.

Free keywords: gold clusters

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Ministry reporting: Yes

Reporting Year: 2017

JUFO rating: 3