Design and Development of Supramolecular Mixed-Metal Systems: The Investigation of Photochemical and Electro- chemical Properties

该项目涉及设计的规划活动， 新型多金属配合物的合成与研究 具有理想的光吸收和电化学性能。 铂族混合金属多金属配合物 金属（Rh、Ir、Os、Ru），其结合多吡啶基桥接 将合成配体。 预计这些系统将 具有非常复杂的电子光谱和电化学， 它们的多组分性质。 电子光谱将 包含过渡到可见区域， 光谱，主要是由于低能量金属-配体电荷 转移过渡。 此外，强烈的π-π星星 在紫外线区域， 该体系中所含的多吡啶基配体。 的 这些系统的电化学预计将占主导地位 通过基于金属的氧化和桥接和非桥接配体， 基于减少。 对于含有铑或铱的系统， 金属基的减少预计也相对较低， 潜力 通过金属的系统变化， 以及桥连和非桥连配体， 深入了解光化学的本质， 电化学过程 %%% 研究规划赠款使以前没有 独立的联邦研究支持， 研究提案。 该项目涉及研究 金属配合物的光化学和电化学性质 含有一个以上的金属中心。 获得的知识 这项研究将有助于更好地设计和准备 具有特定光吸收特性的混合金属络合物。

The project involves planning activities for the design, synthesis, and study of novel multimetallic complexes withdesirable light absorbing and electrochemical properties. Mixed-metal multimetallic complexes of the platinum group metals (Rh, Ir, Os, Ru) which incorporate polypyridyl bridging ligands will be synthesized. These systems are expected to have very complex electronic spectra and electrochemistry due to their multicomponent nature. The electronic spectra will contain transitions well into the visible region of the spectrum, due primarily to low energy metal-to-ligand charge transfer transitions. In addition, intense pi-pi star transitions will be evident in the ultraviolet region for all polypridyl ligands contained in the system. The electrochemistry of these systems is expected to be dominated by metal-based oxidations and bridging and nonbridging ligand- based reductions. For systems containing rhodium or iridium, metal-based reductions are also expected at relatively low potentials. Through the systematic variation of the metals as well as bridging and non-bridging ligands, it will be possible to gain insight into the nature of the photochemical and electrochemical processes. %%% Research Planning Grants enable women who have not had prior independent Federal research support to develop a competitive research proposal. This project involves the study of the photochemical and electrochemical properties of metal complexes containing more than one metal center. The knowledge gained in this study will enable better design and preparation of mixed-metal complexes with specific light-absorbing properties.