Polymers of Mixed-Valence Ruthenium Azine Complexes

混合价钌吖嗪配合物聚合物

• 批准号: 9729819
• 负责人: William Euler
• 金额: $ 33.3万
• 依托单位: University of Rhode Island
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-03-01 至 2001-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9729819&HistoricalAwards=false
• 关键词: Polymers; Mixed; Valence; Ruthenium; Azine

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.

罗德岛大学化学系的 William B. Euler 博士在无机、生物无机和有机金属化学项目的支持下研究混合价钌吖嗪络合物的聚合物。 该项目涉及新型钌聚嗪聚合物的合成和表征，以确定金属在聚合物的电子和电荷转移特性中的作用。 所选系统将合并钌中心作为共轭电子转移途径的一部分。 通过改变聚合物配体的寡嗪桥部分的长度以及由此改变钌位点之间的距离，可以改变聚合物的电荷转移性质。 理论模型预测，随着金属位点的距离越来越远，金属之间的耦合将会增加，直至寡嗪共轭长度的极限。 双核钌-低聚嗪-钌化合物也将作为模型进行制备和研究，以了解聚合物的这种不寻常的预测特性。 所有新材料都将通过红外、核磁共振、紫外-可见-近红外光谱、循环伏安法和变温电导率测量进行研究。 在该项目中，使用添加到导电聚合物上的金属化合物预计可以改变聚合物的性能，从而可以创建新的非线性光学材料、催化剂和纳米结构材料。 待研究的聚合物还将有助于从根本上理解电子通过蛋白质的转移，这是生物化学中的一个重要问题。