ELECTRONIC STRUCTURE OF AND PHOTOISOMERIZATION IN RUTHENIUM-DMSO COMPLEXES

这个子项目是许多利用资源的研究子项目之一 由NIH/NCRR资助的中心拨款提供。子项目的主要支持 子项目的主要研究者可能是由其他来源提供的， 包括其它NIH来源。 列出的子项目总成本可能 代表子项目使用的中心基础设施的估计数量， 而不是由NCRR赠款提供给子项目或子项目工作人员的直接资金。 [Ru（tpy）（L2）（DMSO）]1+/2+（tpy =三联吡啶，L2为双齿配体，DMSO =二甲亚砜）配合物在可见光照射下发生了异构化反应。光异构化发生在激发态表面上，起源于MLCT过渡到三联吡啶配体，这反过来又由双齿L2配体介导。具有不同L2配体的配合物之间的反应性差异可以通过探测Ru-S和Ru-N键相互作用周围的电子结构来研究。因此，我们将研究这类光触发分子的电子结构，使用Ru K-和L-边以及配体K-边XAS的组合。

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.