Mesogenic gold complexes showing aggregation-induced enhancement of phosphorescence in both crystalline and liquid-crystalline phases.
Mesogenic gold complexes showing aggregation-induced enhancement of phosphorescence in both crystalline and liquid-crystalline phases.
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DOI：
10.1039/c6fd00157b
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发表时间：
2017-02
影响因子：
3.4
通讯作者：
S. Yamada;Y. Rokusha;Ryo Kawano;Kaori Fujisawa;O. Tsutsumi
中科院分区：
文献类型：
--
作者：
S. Yamada;Y. Rokusha;Ryo Kawano;Kaori Fujisawa;O. Tsutsumi
合成了以联苯为核的介晶金络合物，并讨论了它们的热力学性质和光物理性质。与以前报道的具有苯基的Au络合物类似，具有短烷氧基链的络合物以晶体形式形成二聚体。然而，具有长链烷氧基的配合物通过晶相和液晶相中的多个分子间相互作用形成了二维层状结构。所制备的Au络合物表现出较高的抗热分解热化学稳定性和较高的LC相热力学稳定性。此外，这些材料在晶体中表现出强烈的磷光，具有很高的量子产率(∼66%)。在具有层状结构的晶体和LC相中，只有在聚集时才会增强磷光强度。因此，这些介源Au络合物有望作为磷光试剂。
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.