U.S.-Brazil Cooperative Research on Reactivity at Charged Interfaces in Aqueous Media

该奖项支持Clifford A.邦顿 加州大学圣巴巴拉分校教授劳伦斯· S.罗格斯大学的罗姆斯特德在一个合作项目中， 与圣保罗大学的Frank Quina教授进行了研究， 圣卡塔里纳联邦大学的Faruk J. Nome教授， 旨在确定伪相位的适用范围 化学反应中某些效应的离子交换模型 反应. 对这一模式的进一步了解， 导致表面反应化学的进一步发展。 PIE模型描述了离子两亲物对 热表面反应的速率和平衡， 有些情况下，可能是因为某些假设， 结构和电性能的表面上， 反应发生了。 参与这项研究的四个研究小组 研究正在积极探索表面电荷密度对 在不同的体系中，化学键和反应性。 他们的 将利用互补的专业知识来研究PIE的极限 模型 每个研究者将定义一组实验， 他是专家的系统，并在这些系统中测试模型。 系统. 基于这些实验的结果，改进了 水界面对反应的影响模型， 将形成平衡。 这里要利用的协同作用是 这是一个很好的，并将导致相当大的互惠互利， 巴西和美国的调查人员。

This award supports the participation of Prof. Clifford A. Bunton of the University of California, Santa Barbara, and Prof. Laurence S. Romsted, of Rutgers University, in a program of cooperative research with Prof. Frank Quina of the University of Sao Paulo and Prof. Faruk J. Nome of the Federal University of Santa Catarina, aimed at determining the range of applicability of the Pseudophase Ion Exchange (PIE) model for certain effects in chemical reactions. Enhanced understanding of this model can be expected to lead to further advances in the chemistry of surface reactions. The PIE model, which describes the effect of ionic amphiphiles on the rates and equilibria of thermal surface reactions, fails in some cases probably because of certain assumptions about the structures and electrical properties of the surfaces on which the reaction takes place. All four research groups involved in this study are actively exploring surface charge density effects on counterion bonding and reactivity, and in various systems. Their complementary expertise will be used to study the limits of the PIE model. Each investigator will define a set of experiments using the systems in which he is expert, and test the model in these systems. Based upon the results of these experiments, improved models for the effect of aqueous interfaces on reactions and equilibria will be developed. The synergy to be exploited here is excellent and will result in considerable mutual benefit to the Brazilian and U.S. investigators.