Physical and photophysical properties of a linear copper(I) complex of a bulky acenapthene-based NHC ligand
Physical and photophysical properties of a linear copper(I) complex of a bulky acenapthene-based NHC ligand
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DOI：
10.1080/00958972.2021.1871901
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发表时间：
2021-01-07
影响因子：
1.9
通讯作者：
Zysman-Colman, Eli
中科院分区：
文献类型：
--
作者：
Hockin, Bryony M.;Mackenzie, Campbell F. R.;Zysman-Colman, Eli
我们报道了第一个电荷中性的线性双配位铜(I)配合物的例子，该配合物含有空间要求很高的并吩咪唑亚甲基N-杂环卡宾(NHC)配体。通过单晶X-射线衍射仪分析，确定了该化合物的结构和结构。在室温下，配合物的发光性能很差，在300 nm激发时，在340 nm附近有配体中心(LC)发射，在420 nm激发时，在540 nm处有配体-配体电荷转移(LLCT)发射；在氯仿中，在300 nm光激发下观察到双重发射。记录了这些过程的纳秒发射寿命。这是第一个含有这种大体积NHC配体的发光性线性铜(I)配合物的例子。
We report the first example of a charge-neutral linear two-coordinate copper(I) complex bearing a sterically demanding acenaphthoimidazolylidene-based N-heterocyclic carbene (NHC) ligand. The identity and geometry of the complex are confirmed by single-crystal X-ray diffraction (XRD) analysis. The complex is poorly emissive at room temperature, showing either ligand-centered (LC) emission around 340 nm when excited at 300 nm or ligand-to-ligand charge transfer (LLCT) emission at 540 nm when excited at 420 nm; in chloroform, dual emission is observed upon photoexcitation at 300 nm. Nanosecond emission lifetimes were recorded for these processes. This is the first example of emissive linear copper(I) complexes containing this bulky NHC ligand.