2个二核钌(Ⅱ)多吡啶配合物的合成、光物理和电化学性质
Synthesis, spectroscopic and electrochemical properties of two dinuclear Ru(II) polypyridyl complexes
云南民族大学学报:自然科学版,2016,25(2):107-113

任明丽 RML

摘要


合成、表征了2个类似的含有4,5-二氮杂芴的二足配体L1和L2.配体L1和L2分别含有9-(2-羟基)苯亚氨基-4,5-二氮杂芴和9-(4-羟基)苯亚氨基-4,5-二氮杂芴.配体和Ru(bpy)2Cl2·2H2O在2-甲氧基乙醇中回流反应得到相应的钌(Ⅱ)配合物 [{Ru(bpy)2}2(μ2-L1)](PF6)4和[{Ru(bpy)2}2(μ2-L2)](PF6)4.对这2个配合物的紫外-可见吸收光谱、发射光谱和氧化还原性质进行研究.这2个配合物的金属-配体核移跃迁(MLCT)吸收峰在443nm,发射峰在580nm.这2个配合物的循环伏安图显示在134V有1个Ru Ⅲ/Ⅱ的可逆氧化峰和3个基于配体的还原峰. Two analogous dipodal ligands L1 and L2 containing 4,5-diazafluorene have been prepared and characterized. They contain 9-(2-hydroxy)phenylimino-4,5-diazafluorene and 9-(4-hydroxy)phenylimino-4,5-diazafluorene, respectively. The corresponding Ru(Ⅱ) complexes [{Ru(bpy)2}2 (μ2-L1-2)](PF6)4 have been prepared by refluxing Ru(bpy)2Cl2·2H2O and each ligand in 2-methoxyethanol. The UV-Vis absorption, emission, and redox properties of the two complexes have been thoroughly investigated. The two complexes give rise to metal-to-ligand charge transfer (MLCT) absorption at around 443 nm and emission at around 580 nm. Electrochemical studies of both complexes are consistent with one RuⅢ/Ⅱ reversible couple at around 134V and accompanied by three ligand-centered reduction couples.

参考



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