A Series of Mixed-Ligand Cu(I) Complexes Comprising Diphosphine-Disulfide Ligands: Effects of Diphosphine Ligands on Luminescent Properties
A Series of Mixed-Ligand Cu(I) Complexes Comprising Diphosphine-Disulfide Ligands: Effects of Diphosphine Ligands on Luminescent Properties
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一系列包含二膦-二硫化物配体的混合配体 Cu(I) 配合物：二膦配体对发光性能的影响
DOI：
10.1021/acs.inorgchem.0c01445
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发表时间：
2020
影响因子：
4.6
通讯作者：
Tsubomura Taro
中科院分区：
文献类型：
--
作者：
Yamazaki Yasuomi;Tsukuda Toshiaki;Furukawa Shota;Dairiki Ayumi;Sawamura Shota;Tsubomura Taro
混合配体Cu（I）配合物由于其优异的光致发光性能而成为贵金属配合物和稀有金属配合物的替代物。为了开发具有丰富光功能的混合配体Cu（I）配合物，寻找合适的配体组合已引起越来越多的研究兴趣。在这里，我们报告的第一个例子发射杂配二膦-二硫化物铜（I）配合物结合二膦配体。通过对一系列双膦配体的系统研究发现，双膦配体中两个P原子之间的大π共轭桥连结构使其具有更高的发光性能。当双膦配体为（R）-BINAP（（R）-BINAP =（R）-（+）-2，2 ′-双（二苯基膦基）-1，1 ′-联萘）时，Cu（I）配合物的发射量子产率（Φem）为0.13，发射寿命（τem）为118 μs。
Mixed-ligand Cu(I) complexes have attracted attention as alternatives to the noble- and/or rare-metal complexes, because of their remarkable photofunctions. To develop mixed-ligand Cu(I) complexes with rich photofunctions, an investigation of a suitable combination of ligands has captured more and more research interests. Herein, we report the first examples of emissive heteroleptic diphosphine-disulfide Cu(I) complexes combined with diphosphine ligands. The systematic study using a series of diphosphine ligands revealed that large π-conjugated bridging moieties between the two P atoms in the diphosphine ligands result in higher light-emission performance. When the diphosphine ligand was (R)-BINAP ((R)-BINAP = (R)-(+)-2,2′-bis(diphenylphosphino)-1,1′-binaphthyl), the Cu(I) complex had an emission quantum yield (Φem) of 0.13 and a long emission lifetime (τem= 118 μs).