Dipyrrolyldiketone PtII Complexes: Ion‐Pairing π‐Electronic Systems with Various Anion‐Binding Modes
Dipyrrolyldiketone PtII Complexes: Ion‐Pairing π‐Electronic Systems with Various Anion‐Binding Modes
复制标题
二吡咯二酮 PtII 配合物：具有各种阴离子结合模式的离子对 π 电子系统
DOI：
10.1002/chem.202100855
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Maeda Hiromitsu
中科院分区：
文献类型：
--
作者：
Kuno Atsuko;Hirata Goki;Tanaka Hiroki;Kobayashi Yoichi;Yasuda Nobuhiro;Maeda Hiromitsu
通过结合π电子体系的阴离子络合物和抗衡阳离子，可以构建多种π电子离子配对组装体。本研究合成了一系列阴离子响应性π电子分子--含苯基吡啶配体的二吡咯二酮铂Ⅱ配合物。光谱分析表明，所得的PtII配合物具有较高的荧光发射量子产率（0.30-0.42）和微秒级寿命，并与溶液态阴离子结合。这些配合物表现出固态离子对组装，表现出不同的阴离子结合模式，这些阴离子结合模式来源于吡咯反转和吡咯非反转构象，以及堆积结构，其中电荷-电荷组装的贡献取决于配合物中的取代基及其抗衡阳离子的几何构型和电子状态。
A variety of π‐electronic ion‐pairing assemblies can be constructed by combining anion complexes of π‐electronic systems and countercations. In this study, a series of anion‐responsive π‐electronic molecules, dipyrrolyldiketone PtIIcomplexes containing a phenylpyridine ligand, were synthesized. The resulting PtIIcomplexes exhibited phosphorescence emission, with higher emission quantum yields (0.30–0.42) and microsecond‐order lifetimes, and solution‐state anion binding, as revealed by our spectroscopic analyses. These PtIIcomplexes displayed solid‐state ion‐pairing assemblies, exhibiting various anion‐binding modes, which derived from pyrrole‐inverted and pyrrole‐non‐inverted conformations, and packing structures, with the contribution of charge‐by‐charge assemblies, which were dependent on the substituents in the PtIIcomplexes and the geometries and electronic states of their countercations.