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Chloride assisted supramolecular assembly of a luminescent gigantic cluster: [Ag216S56Cl7(C≡CPh)98(H2O)12] with pseudo-Th skeleton and five-shell arrangement

Abstract

Using a chloride-assisted supramolecular building-block approach, we have employed the molecular Cl@Agm(C≡CPh)n entity in the construction of a gigantic cluster namely [Ag216S56Cl7(C≡CPh)98(H2O)12][Ag3(imidazole)(H2O)5](SbF6)4 (1), which contains the largest discrete organometallic cluster investigated by X-ray crystallography. Based on an icosahedral Cl@Ag12 kernel, this spheroidal cluster features an unprecedented five-shell structure Cl@Ag12@S12@Ag32@S44Cl6@Ag172 with idealized Th symmetry. The MALDI-MS, 1D, 2D 1H NMR, electronic absorption and emission spectra, and HR-TEM of 1 was measured. Compound 1 shows intense red luminescence in solution at room temperature (QY = 3.4% in CH2Cl2), in addition with its 3.4 nm diameter, which makes it a unique example that fills the gap between small luminescent silver clusters and large luminescent silver nanoparticles.

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Publication details

The article was received on 08 Feb 2017, accepted on 12 Jun 2017 and first published on 13 Jun 2017


Article type: Communication
DOI: 10.1039/C7NR00931C
Citation: Nanoscale, 2017, Accepted Manuscript
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    Chloride assisted supramolecular assembly of a luminescent gigantic cluster: [Ag216S56Cl7(C≡CPh)98(H2O)12] with pseudo-Th skeleton and five-shell arrangement

    Z. Chen, D. Y. S. Tam and T. C. W. Mak, Nanoscale, 2017, Accepted Manuscript , DOI: 10.1039/C7NR00931C

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