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Issue 82, 2015
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Ligand-induced change of the crystal structure and enhanced stability of the Au11 nanocluster

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Abstract

In this paper, we report a highly stable gold nanocluster co-protected by the selenophenol and 1,5-bis(diphenylphosphino)pentane (L5 for short) ligands, formulated as [Au11(L5)4(SePh)2]+. The structure of this nanocluster is determined by X-ray crystallography. The L5-ligands are in the form of “Au–PPh2(CH2)5Ph2P–Au”, similar to the “staple motif” in the Aun(SR)m nanoclusters. The purity of this nanocluster is confirmed by electrospray ionization mass spectrometry (ESI-MS) and the thermogravimetric analysis (TGA). Moreover, we have also systematically investigated the stability of the [Au11(L5)4(SePh)2]+ (Au11-Se for short). The results show that Au11-Se is significantly more stable than both Au11(PPh3)7Cl3 (Au11-7 for short) and [Au11(PPh3)8Cl2]Cl (Au11-8 for short), even in the presence of excess thiol (RSH). This work will provide a new opportunity for future wide research on gold nanoclusters.

Graphical abstract: Ligand-induced change of the crystal structure and enhanced stability of the Au11 nanocluster

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Article information


Submitted
18 Jun 2015
Accepted
27 Jul 2015
First published
05 Aug 2015

RSC Adv., 2015,5, 66879-66885
Article type
Paper

Ligand-induced change of the crystal structure and enhanced stability of the Au11 nanocluster

X. Kang, Y. Song, H. Deng, J. Zhang, B. Liu, C. Pan and M. Zhu, RSC Adv., 2015, 5, 66879
DOI: 10.1039/C5RA11674K

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