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首页> 外文期刊>The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory >Excited-State Structure and Delocalization in Ruthenium (II) -Bipyridine Complexes That Contain Phenyleneethynylene Substitutents
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Excited-State Structure and Delocalization in Ruthenium (II) -Bipyridine Complexes That Contain Phenyleneethynylene Substitutents

机译：含苯乙炔撑取代基的钌（II）-联吡啶配合物的激发态结构和离域

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摘要

A comprehensive photophysical study has been carried out on the two complexes [(bpy)-2Ru(4,4'-PE-byp)]~(2+) and [(bpy)-2Ru(5,5'-PE-byp)]~(2+) (44Ru and 5Ru , respectively. where bpy=2,2'-bipyridine and pe=phenyleneethynylene). The objective of this work is to determine the effect of the phenyleneethynylene substituents on the properties of the metal-to-ligand charge-transfer excited state. The complexes have been characrerized by using UV-visible absorption. Photoluminescence and UV-visible and infrared transient absorption spectroscopy. The results indicate that the MLCT exxited state is localized on the PE-substituted bpy ligands . Moreover, the photophysical data indicate that in the MLCT excited state the excited electron is delocalized into the PE substituents and the manifestations of the electronic delocalization and larger when the substituents are in the 4,4'-position
机译：已对两种复合物[（bpy）-2Ru（4,4'-PE-byp）]〜（2+）和[（bpy）-2Ru（5,5'-PE-byp）进行了全面的光物理研究）]〜（2+）（分别为44Ru和5Ru，其中bpy = 2,2'-联吡啶和pe =亚苯基亚乙炔基）。这项工作的目的是确定亚苯基亚乙炔基取代基对金属-配体电荷转移激发态性能的影响。通过使用紫外线可见吸收，已将配合物表征。光致发光，紫外可见光和红外瞬态吸收光谱。结果表明，MLCT的存在状态位于PE取代的bpy配体上。此外，光物理数据表明，在MLCT激发态下，激发电子离域为PE取代基，当取代基位于4,4'-位时，电子离域的表现更大。

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