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首页> 外文期刊>Chemistry: A European journal >Encapsulation and Enhanced Luminescence Properties of Ir-III Complexes within a Hexameric Self-Assembled Capsule
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Encapsulation and Enhanced Luminescence Properties of Ir-III Complexes within a Hexameric Self-Assembled Capsule

机译：六聚体自组装胶囊中Ir-III配合物的封装和增强的发光性质

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摘要

Encapsulation and luminescence studies of [Ir(ppy)(2)(bpy)]Cl (ppy=2-phenylpyridinate, bpy=2,2'-bipyridine) within a hexameric resorcinarene capsule are reported. One Ir-III complex cation was encapsulated within the capsule, as demonstrated by NMR and dynamic light scattering (DLS) studies. The emission color of the Ir-III complex was drastically changed from orange to yellow by encapsulation, in contrast with the lack of significant changes in the absorption spectrum. The hexameric capsule effectively hampers the non-radiative pathway to increase both the luminescence quantum yield and the exited state lifetime. The luminescent properties of the encapsulated Ir-III complex depend on the ratio of Ir-III complex to the resorcinarene monomer as well as the concentration of resorcinarene monomer owing to the reversible process of selfassembly of the hexameric capsule. Quenching experiments revealed that the Ir-III complex in the capsule was effectively separated from quenchers.
机译：报道了六聚间苯二甲烯胶囊中的[Ir（ppy）（2）（bpy）] Cl（ppy = 2-苯基吡啶，bpy = 2,2'-联吡啶）的封装和发光研究。 NMR和动态光散射（DLS）研究表明，一种Ir-III络合物阳离子被封装在胶囊中。通过包封，Ir-III配合物的发射颜色从橙色急剧变为黄色，与之相比，吸收光谱没有明显变化。六聚体胶囊有效地阻碍了非辐射途径，从而增加了发光量子产率和出射寿命。由于六聚体胶囊自组装的可逆过程，所包封的Ir-III配合物的发光性质取决于Ir-III配合物与间苯二甲烯单体的比例以及间苯二甲烯单体的浓度。淬火实验表明，胶囊中的Ir-III配合物已与淬灭剂有效分离。

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