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Issue 16, 2015
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A luminescent double helical gold(i)–thiophenolate coordination polymer obtained by hydrothermal synthesis or by thermal solid-state amorphous-to-crystalline isomerization

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Abstract

A gold(I)–thiophenolate coordination polymer, [Au(SPh)]n, has been synthesized by employing hydrothermal conditions at 120 °C. This new synthesis led to isolate highly crystalline compound and to solve its structure from powder X-ray diffraction patterns. The compound forms double interpenetrated helical chains stabilized through C–H⋯π and aurophilic bonds. The solid is phosphorescent at room temperature and in the solid-state with a quantum yield of around 5%. Thanks to DFT calculations, the emission is attributed to a Ligand-to-Metal–Metal Charge Transfer (LMMCT) transition with a small contribution from a Metal Centered (MC) transition. In addition to this hydrothermal reaction, it is possible to obtain this [Au(SPh)]n coordination polymer by a two-step synthesis which is a thermally-induced solid-state amorphous-to crystalline isomerization. This transition has been followed by powder X-ray diffraction, scanning electron microscopy, differential scanning calorimetry and also from the appearance of phosphorescence upon heating.

Graphical abstract: A luminescent double helical gold(i)–thiophenolate coordination polymer obtained by hydrothermal synthesis or by thermal solid-state amorphous-to-crystalline isomerization

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Supplementary files

Article information


Submitted
13 Jan 2015
Accepted
12 Mar 2015
First published
13 Mar 2015

J. Mater. Chem. C, 2015,3, 4115-4125
Article type
Paper
Author version available

A luminescent double helical gold(I)–thiophenolate coordination polymer obtained by hydrothermal synthesis or by thermal solid-state amorphous-to-crystalline isomerization

C. Lavenn, L. Okhrimenko, N. Guillou, M. Monge, G. Ledoux, C. Dujardin, R. Chiriac, A. Fateeva and A. Demessence, J. Mater. Chem. C, 2015, 3, 4115
DOI: 10.1039/C5TC00119F

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