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Volume 196, 2017
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Mesogenic gold complexes showing aggregation-induced enhancement of phosphorescence in both crystalline and liquid-crystalline phases

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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.

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Publication details

The article was received on 25 Jun 2016, accepted on 20 Jul 2016 and first published on 20 Jul 2016


Article type: Paper
DOI: 10.1039/C6FD00157B
Citation: Faraday Discuss., 2017,196, 269-283
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    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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