Synthesis and characterization of novel rhenium (I) complexes with large Stokes shift for applications in organic electroluminescent devices
作者:Xiao Li、Dongyu Zhang、Gonghao Lu、Guoyong Xiao、Haijun Chi、Yan Dong、Zhiqiang Zhang、Zhizhi Hu
DOI:10.1016/j.jphotochem.2012.05.017
日期:2012.8
Two novel tricarbonyl rhenium(I) (Re(I)) complexes with versatile building block (1,10-phenanthroline), i.e., Re-PPhen and Re-FPPhen (PPhen, 3,8-diphenyl-1,10-phenanthroline; FPPhen, 3,8-bis(4-fluorophenyl)-1,10-phenanthroline), were designed, synthesized and structurally characterized by FTIR, 1H NMR and mass spectroscopy. The photophysical properties of two complexes were investigated in detail.
两种新型的三羰基rh(I)(Re(I))配合物,具有多种结构单元(1,10-菲咯啉),即Re-PPhen和Re-FPPhen(PPhen,3,8-diphenyl-1,10-phenanthroline;设计,合成了FPPhen 3,8-双(4-氟苯基)-1,10-菲咯啉,并通过FTIR,1 H NMR和质谱对其结构进行了表征。详细研究了两种配合物的光物理性质。吸收带的中心大约为 来自两个络合物的255–350和380–550 nm分别归因于以配体为中心的π→π*电子跃迁和金属到配体的电荷转移dπ(Re)→π*(配体)(MLCT)跃迁。Re-PPhen和Re-FPPhen展示了3种MLCT的最大发射在572–580 nm左右,最大宽度约为ca的一半。90纳米 这些络合物显示出独特的特征,即斯托克斯位移高达240 nm时具有很高的位移。两种配合物均分别显示出高的光致发光量子效率(0.11、0