Volume 196, 2017

Mesogenic gold complexes showing aggregation-induced enhancement of phosphorescence in both crystalline and liquid-crystalline phases

Abstract

Mesogenic Au complexes with a biphenyl core were synthesized as new AIEgens, and their thermodynamic and photophysical properties were discussed. Similar to Au complexes with a phenyl core which have been reported previously, the complexes with a short alkoxy chain formed dimers in the crystal form. However, the complexes with a long alkoxy chain formed two-dimensional layer structures through multiple intermolecular interactions in both the crystalline and liquid-crystalline (LC) phases. The present Au complexes showed a high thermochemical stability against thermal decomposition and a high thermodynamic stability of the LC phase. Moreover, these materials exhibited intensive phosphorescence with a large quantum yield (∼66%) in the crystals. In the crystal and LC phase with a layer structure, the phosphorescence intensity was enhanced only on aggregation. Thus, these mesogenic Au complexes can be expected to be useful as phosphorescent AIEgens.

Associated articles

Supplementary files

Article information

Article type
Paper
Submitted
25 जून 2016
Accepted
20 जुलाई 2016
First published
20 जुलाई 2016

Faraday Discuss., 2017,196, 269-283

Mesogenic gold complexes showing aggregation-induced enhancement of phosphorescence in both crystalline and liquid-crystalline phases

S. Yamada, Y. Rokusha, R. Kawano, K. Fujisawa and O. Tsutsumi, Faraday Discuss., 2017, 196, 269 DOI: 10.1039/C6FD00157B

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