CAREER: Control of Electron Transfer Reactions Through Electrostatic Potentials in Organized Media

无机化学、生物无机化学和金属有机化学项目的这一奖项支持授予俄亥俄州立大学化学系的Claudia Turro博士的教职早期职业发展(CAREAR)奖助金。这项研究的目的是确定静电效应对电子转移反应的作用。胶束(大分子)的表面电势将通过使用阳离子、中性或阴离子洗涤剂改变胶束的组成来调节。然后将测量电子转移速率作为胶束电势的函数。还将尝试使用静电场来控制电子转移的方向性。激发态给电子体将是众所周知的中性Ru(II)化合物，因此可以利用它们金属-配体电荷转移态的稳态发光和发射寿命的减少来获得电子转移速率。受体将是紫精和基于吡啶的物种，这些物种已经被合成地结合到胶束表面。除了教授本科生化学课程外，特罗博士还积极参与指导女性和少数族裔学生的理科课程。电子转移是生物系统和材料中的一个重要过程，大分子结构中的带电基团可能会影响电子移动的路径和所需的时间。在这项研究中，将研究外电场效应对电子转移速度和方向的影响。特罗博士将担任俄亥俄州立大学女性和少数族裔学生的导师。

This award in the Inorganic, Bioinorganic, and Organometallic Chemistry Program supports a Faculty Early Career Development (CAREER) grant to Dr. Claudia Turro of the Chemistry Department, Ohio State University. The goal of the research is to determine the role of electrostatic effects on electron-transfer reactions. The surface potentials of micelles (macromolecules) will be tuned by varying the composition of the micelles using cationic, neutral, or anionic detergents. The rate of electron transfer will then be measured as a function of micellar potential. Attempts will also be made to use electrostatic fields to control directionality of electron transfer. The excited-state electron donors will be well-known neutral ruthenium(II) compounds so that the decrease of the steady-state luminescence and emission lifetime of their metal-ligand charge transfer states can be used to obtain electron-transfer rates. The acceptors will be viologen and pyridine-based species that have been incorporated into the micelle surface synthetically. In addition to teaching undergraduate chemistry courses, Dr. Turro is actively involved with mentoring women and minority students in science. Electron transfer is an important process in biological systems and in materials, and it is possible that charged groups within the large molecular structure could have an impact on the path and on the time required for electron movement. In this research, the influence of external electric field effects on the rate and direction of electron transfer will be studied. Dr. Turro will serve as a mentor to women and minority students at Ohio State University.