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Issue 34, 2013
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Photoluminescent properties of liquid crystalline gold(i) isocyanide complexes with a rod-like molecular structure

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Abstract

Novel liquid crystalline (LC) gold(I) complexes were synthesised and their LC behaviour and photophysical properties were investigated. Simple ligands were utilised in order to prevent steric hindrance and facilitate a strong intermolecular aurophilic interaction, resulting in highly efficient photoluminescence. It was found that the complexes easily formed dimers in the crystalline, LC, and isotropic phases due to strong interaction between the gold atoms of neighbouring molecules, and that these dimers acted as unit mesogens in the LC phase. The complexes exhibited intense blue photoluminescence with quantum yields of 8–50% in the condensed phases, but no photoluminescence in dilute solutions. It was therefore concluded that the luminescence was due to the dimers, and that the formation of these was facilitated by the simplicity of the ligands surrounding the gold atoms, resulting in a low level of steric hindrance and strong aurophilic interaction.

Graphical abstract: Photoluminescent properties of liquid crystalline gold(i) isocyanide complexes with a rod-like molecular structure

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Article information


Submitted
10 Jun 2013
Accepted
08 Jul 2013
First published
09 Jul 2013

J. Mater. Chem. C, 2013,1, 5359-5366
Article type
Paper

Photoluminescent properties of liquid crystalline gold(I) isocyanide complexes with a rod-like molecular structure

K. Fujisawa, N. Kawakami, Y. Onishi, Y. Izumi, S. Tamai, N. Sugimoto and O. Tsutsumi, J. Mater. Chem. C, 2013, 1, 5359
DOI: 10.1039/C3TC31105H

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