ELECTRONIC STRUCTURE OF AND PHOTOISOMERIZATION IN RUTHENIUM-DMSO COMPLEXES

这个子项目是利用资源的许多研究子项目之一。 由NIH/NCRR资助的中心拨款提供。对子项目的主要支持 子项目的首席调查员可能是由其他来源提供的， 包括美国国立卫生研究院的其他来源。为子项目列出的总成本可能 表示该子项目使用的中心基础设施的估计数量， 不是由NCRR赠款提供给次级项目或次级项目工作人员的直接资金。 合成了一系列的[Ru(Tpy)(L2)(DMSO)]1+/2+(tpy=联吡啶，L2为双齿配体，DMSO=二甲基亚砜)配合物，其中一些化合物在可见光照射下表现出DMSO配体的键异构化。光异构化反应发生在MLCT跃迁到联吡啶配体的激发态表面，并由双齿L2配体介导。通过探测Ru-S和Ru-N键相互作用周围的电子结构，可以研究不同L2配体的配合物之间反应性的差异。因此，我们将利用Ru K-EDGE和L-EDGE以及配体K-EDGE的XAS来研究这类光触发分子的电子结构。

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. Primary support for the subproject and the subproject's principal investigator may have been provided by other sources, including other NIH sources. The Total Cost listed for the subproject likely represents the estimated amount of Center infrastructure utilized by the subproject, not direct funding provided by the NCRR grant to the subproject or subproject staff. A series of [Ru(tpy)(L2)(DMSO)]1+/2+ (tpy = terpyridine, L2 is a bidentate ligand, DMSO = dimethylsulfoxide) complexes has been developed, some of which display linkage isomerization of the DMSO ligand upon irradiation with visible light. The photoisomerization takes place on the excited state surface originating from the MLCT transition to the terpyridine ligand, which is in turn mediated by the bidentate L2 ligand. The difference in reactivity between complexes with varying L2 ligands can be investigated by probing the electronic structure surrounding the Ru-S and Ru-N bond interactions. Thus we will investigate the electronic structure of this class of phototriggered molecules using a combination of Ru K- and L-edge as well as ligand K-edge XAS.