钌铁双核配合物的合成及猝灭[Ru(bpy)_3]^(2+)发光过程研究

Study on Synthesis of the Ru (Ⅱ)-Fe (Ⅱ) Binuclear Complexes and Their Quenching Luminescence of [Ru (bpy)_3]^(2+)

合成了配体(1～6)及一系列新型钌铁双核配合物:[(C_(10)H_6N_2)CN—NCR—Fc)Ru(bpy)_2]·(PF_6)_2,(7,8);[(C_(10)H_6N_2)CN—C_6H_4—NCR—Fc)Ru(bpy_2)]·(PF_6)_2,(9,10);[(C_(10)H_6N_2)CM—C_6H_4—C_6H_4—NCR—Fc)Ru(bPy)_2]·(PF_6)_2,(11,12);(7,9,11 RH;8,9,10,12 RCH_(3) Fc为二茂铁基)。并对其进行了光谱表征。通过对该类配合物的循环伏安和发光光谱研究,讨论其激发态的氧化还原性和对[Ru(bpy)_3]^(2+)发光过程的猝灭作用。研究表明猝灭过程为扩散控制的双分子交换能量传递。

A kind of Ru(Ⅱ)-Fe(Ⅱ) binuclear complexes, cis-[Ru(bpy)_2[(C_(10)H_6N_2) C=N—N=CR—Fc)][(PF_6)_2], cis-[Ru(bpy)_2((C_(10)H_6N_2)C=N—C_6H_4—N=CR—Fc)][(PF_6)_2] and cis-[Ru(bpy)_2 ((C_(10)H_6N_2)C=N—C_6H_4—C_6H_4—N=CR—Fc)][(PF_6)_2] have been synthesized and characterized. The redox property of the excited state and their quenching the luminescence of [Ru(bpy)_3]^(2+) have been discussed through the study of the emission spectrum and the cyclic voltammetry. The quenching mechanism of bimolecular exchange energy-transfer was also discussed.