Electrocrystallization of Monolayer-Protected Gold Clusters : Opening the Door to Quality, Quantity, and New Structures
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. https://doi.org/10.1021/jacs.7b00568
Published inJournal of the American Chemical Society
© the Authors, 2017. This is an open access article published under an ACS AuthorChoice License, which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
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. ...
PublisherAmerican Chemical Society
Publication in research information system
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Related funder(s)Academy of Finland
Funding program(s)Research costs of Academy Professor, AoF; Research post as Academy Professor, AoF
Additional information about fundingThis work was financially supported by AIRC (FM, Project 12214: Innovative Tools for cancer risk assessment and early diagnosis - 5 per mille) and the Academy of Finland (KR, grant nos. 263256 and 292746). We thank Alfonso Venzo for insights into the NMR analysis.
Except where otherwise noted, this item's license is described as © the Authors, 2017. This is an open access article published under an ACS AuthorChoice License, which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
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