Deciphering synergetic core-shell transformation from [Mo6O22@Ag44] to [Mo8O28@Ag50]

Zhi Wang, Hai-Feng Su, Chen-Ho Tung, Di Sun () and Lan-Sun Zheng
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Zhi Wang: Shandong University
Hai-Feng Su: Xiamen University
Chen-Ho Tung: Shandong University
Di Sun: Shandong University
Lan-Sun Zheng: Xiamen University

Nature Communications, 2018, vol. 9, issue 1, 1-8

Abstract: Abstract The structural transformation of high-nuclearity silver clusters from one to another induced by specific stimuli is of scientific significance in terms of both cluster synthesis and reactivity. Herein, we report two silver-thiolate clusters, [Mo6O22@Ag44] and [Mo8O28@Ag50], which are templated by isopolymolybdates inside and covered by iPrS− and PhCOO− ligands on the surfaces. Amazingly, the [Mo8O28@Ag50] can be transformed from [Mo6O22@Ag44] by adding PhCOOH which increases the degree of condensation of molybdates template from Mo6O228- to Mo8O288-, then enlarging the outer silver shell from Ag44 to Ag50. The evolution of solution species revealed by time-dependent electrospray ionization mass spectrometry (ESI-MS) suggests a breakage-growth-reassembly (BGR) transformation mechanism. These results not only provide a combined assembly strategy (anion-template + induced transformation) for the synthesis of silver-thiolate clusters but also help us to better understand the complex transformation process underpinning the assembly system.

Date: 2018
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DOI: 10.1038/s41467-018-06755-4

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