ELECTRONIC STRUCTURE OF AND PHOTOISOMERIZATION IN RUTHENIUM-DMSO COMPLEXES

该子项目是利用 由NIH/NCRR资助的中心赠款提供的资源。子项目和 研究者（PI）可能从另一个NIH来源获得主要资金， 因此可以在其他CRISP条目中表示。列出的机构是 中心，不一定是研究者的机构。 [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. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. 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.