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Issue 26, 2017
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Chloride assisted supramolecular assembly of a luminescent gigantic cluster: [Ag216S56Cl7(C[triple bond, length as m-dash]CPh)98(H2O)12] with pseudo-Th skeleton and five-shell arrangement

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Abstract

Using a chloride-assisted supramolecular building-block approach, we have employed the molecular Cl@Agm(C[triple bond, length as m-dash]CPh)n entity in the construction of a gigantic cluster namely [Ag216S56Cl7(C[triple bond, length as m-dash]CPh)98(H2O)12][Ag3(imidazole)(H2O)4](SbF6)2 (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, emission spectra and HR-TEM of 1 were measured. Compound 1 shows intense red luminescence in solution at room temperature (QY = 4.7% in CH2Cl2), in addition to 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.

Graphical abstract: Chloride assisted supramolecular assembly of a luminescent gigantic cluster: [Ag216S56Cl7(C [[triple bond, length as m-dash]] CPh)98(H2O)12]− with pseudo-Th skeleton and five-shell arrangement

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Supplementary files

Article information


Submitted
08 Feb 2017
Accepted
12 Jun 2017
First published
13 Jun 2017

Nanoscale, 2017,9, 8930-8937
Article type
Communication

Chloride assisted supramolecular assembly of a luminescent gigantic cluster: [Ag216S56Cl7(C[triple bond, length as m-dash]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, 9, 8930
DOI: 10.1039/C7NR00931C

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