Synthesis, photophysical properties, and theoretical studies on pyrrole-containing bromo Re(I) complex
作者:Zhenjun Si、Xiaona Li、Xiyan Li、Hongjie Zhang
DOI:10.1016/j.jorganchem.2009.07.036
日期:2009.11
Two bromo rhenium(I) carbonyl complexes with the formula of [Re(CO)3(L)Br], where L = 1,10-phenanthroline (Phen–Re) and 5-(1H-pyrrol-1-yl)-1,10-phenanthroline (Pyph–Re), were successfully synthesized with the aim to analyze the effect of the pyrrole (Py) moiety on the photophysical properties of Pyph–Re. It was found that the triplet metal-to-ligand charge-transfer dπ (Re) → π*(N-N) emission of Phen–Re
两种具有[Re(CO)3(L)Br]的溴mo(I)羰基配合物,其中L = 1,10-菲咯啉(Phen - Re)和5-(1H-吡咯-1-基)- 1,10-菲咯啉(Pyph -再),成功地与分析吡咯(该效果的目的合成PY上的光物理性质)部分Pyph -再。发现Phen – Re和Pyph – Re的三重态金属到配体的电荷转移dπ(Re)→π*(N - N)发射居中于。527 nm,发光量子产率(LQY)为0.015,大约 578 nm,LQY分别为0.011。同时,还使用在C,H,N,O和Br原子上使用的6-31G *基集计算了基态的几何结构和Phen - Re和Pyph - Re的吸收光谱性质,在Re原子上采用了LANL2DZ。根据实验和理论分析,光致发光光谱的红移和Pyph - Re的LQY较低应主要归因于最高占据分子轨道与最低未占据分子轨道之间的能隙变窄以及LLCT跃迁更多定量Pyph