Polymers of Mixed-Valence Ruthenium Azine Complexes

威廉B博士。美国罗德大学化学系的欧拉 岛，是由无机，生物无机和有机 研究混价钌吖嗪聚合物的化学计划 配合物 该项目涉及的合成和表征 新的聚嗪基聚合物，以确定 金属在电子和电荷转移性能的 聚合物 选定的系统将把钌中心作为一部分， 共轭电子转移途径的一部分。 电荷转移 聚合物的性质将通过改变聚合物的长度来改变。 聚合物配体的低聚吖嗪桥部分，因此距离 在钌位点之间。 一个理论模型预测， 站点变得更远，金属之间的耦合将增加， 达到低聚吖嗪共轭长度的极限。 双核 还将制备铼-低聚吖嗪-钌化合物， 作为模型来研究，以了解这种不寻常的预测属性， 聚合物。 所有的新材料都将通过红外线进行研究， 核磁共振和紫外可见近红外 光谱法、循环伏安法和变温电 电导率测量 在这个项目中，使用金属化合物附加到电气 预期导电聚合物能够改变聚合物的性能， 允许创造新的非线性光学材料，催化剂， 和纳米结构材料。 待研究的聚合物也将有助于 在基本理解电子通过 蛋白质是生物化学中的重要问题。

Dr. William B. Euler of the Department of Chemistry, University of Rhode Island, is supported by the Inorganic, Bioinorganic, and Organometallic Chemistry Program to study polymers of mixed-valence ruthenium azine complexes. This project involves the synthesis and characterization of new ruthenium-polyazine based polymers in order to determine the role of the metal in the electronic and charge-transfer properties of the polymers. Systems selected will incorporate the ruthenium center as part of the conjugated electron-transfer pathway. The charge-transfer properties of the polymers will be modified by changing the length of the oligoazine bridge portion of the polymer ligand and thus the distance between ruthenium sites. A theoretical model predicts that as the metal sites become further apart, the coupling between metals will increase, up to the limit of the conjugation length of the oligoazine. Binuclear ruthenium-oligoazine-ruthenium compounds will also be prepared and studied as models for understanding this unusual predicted property of the polymers. All of the new materials will be studied by infrared, nuclear magnetic resonance, and ultraviolet-visible-near-infrared spectroscopies, cyclic voltammetry, and variable temperature electrical conductivity measurements. In this project the use of metal compounds appended to electrical conducting polymers is expected to modify the polymer properties, allowing for the creation of new nonlinear optical materials, catalysts, and nanostructured materials. The polymers to be studied will also help in the fundamental understanding of the transfer of electrons through proteins, an important problem in biological chemistry.