Synthesis, Characterization and Photoelectric Properties of Novel Ir-Re Bimetallic Complexes

Synthesis, Characterization and Photoelectric Properties of Novel Ir-Re Bimetallic Complexes
　　In this work, One novel bridge ligand Hbpy3f [Hbpy3f stands for 1-(2,2’-bipyridine-6-yl) -4,4,4-trifluorobutane-1,3-dione] and three complex-ligands Ir(rpdt)2bpy3f {fpdt represents [5-(4-fluorophenyl)-1,3-dimethyl-1H-1,2,4-triazole]}、Ir(pdt)2bpy3f [pdt represents (1,3-dimethyl-5-phenyl-1H-1,2,4-triazole)]、Ir(pdt)2phen5f [phen5f represents 4,4,5,5,5-pentafluoro-1-(1’,10’-phenanthrolin-2’-yl) -pentane-1,3-dionate] were synthesized and characterized. And Ir-RE bimetallic complexes array were synthesized and characterized using the "complex as ligand" strong magnets approach. Single crystals of three complex-ligands and Ir(pdt)2phen5f-Yb complex have been obtained, which structures and photophysical properties were investigated. The characteristic emission of EuⅢion can be observed from all iridium-europium bimetallic complexes. Complex-ligands both in Ir(pdt)2bpy3fEuCl3·4H2O and Ir(fpdt)2bpy3fEuCl3·2H2O can transfer energy to EuⅢion completely. Photophysical data implied that the characteristic emission of 613 nm from EuⅢion was sensitized by the 3MLCT energy based on complex-ligands. Furthermore, the excitation window for Ir(pdt)2bpy3fEuCl3·4H2O and Ir(fpdt)2bpy3fEuCl3·2H2O extend up to 520 nm indicating that this bimetallic complex can be used in cell imaging techniques.Ir-Yb, Nd, Er arrays were investigated and it was found that http://www.chinamagnets.biz/ NdⅢ, YbⅢions can be sensitized by Ir(pdt)2phen5f, and NdⅢion was sensitized by Ir(pdt)2bpy3f. The emission spectra between 400-650 nm of complex-ligands were compared with their bimetallic complexes, indicating that there is energy-transfer relation between complex-ligand and YbⅢ, NdⅢ, ErⅢions. 更多还原