Achieving Selectivity in a Chemical Reaction Process Using Reactant Orientation via Electric Fields

俄勒冈州州立大学的孔伟（音译）在年获得了一笔职业资助。 实验物理化学计划，以研究如何 定向化学反应物以实现反应选择性。 目标 是选择性地裂解指定的化学键的能力， 最小化竞争路径的影响。 利用超声波分子 束和中等电场，极性反应物的取向， 被观察到。 然后，定向的化学键将被选择性地 被线性偏振激光分解 取决于 取向分子的跃迁偶极矩和 激光的偏振方向，一个反应坐标将是 优先激发，导致化学物质的选择性裂解 邦德 孔教授的教育计划包括开发一门新课程 强调“案例研究”方法的化学反应动力学， 现有的量子化学课程的教学从一个历史的 perspective. 多途径反应中的选择性是最吸引人的 化学动力学和反应动力学的问题， 选择性是许多科学努力的主要驱动力。 通过选择性，可以分离不同的反应途径， 详细调查。 这种能力不仅可以让更深层次的 了解每个反应路径，还可以研究 否则这些系统将过于复杂而无法处理。

Wei Kong of Oregon State University has been awarded a CAREER grant in the Experimental Physical Chemistry Program to investigate ways of orienting chemical reactants to achieve reaction selectivity. The goal is the ability to selectively cleave a designated chemical bond with minimum effects from competitive pathways. Using supersonic molecular beams and moderate electric fields, orientation of polar reactants has been observed. The oriented chemical bond will then be selectively dissociated by a linearly polarized laser. Depending on the direction of the transition dipole moment of the oriented molecules and the polarization direction of the laser, one reaction coordinate will be preferentially excited, resulting in selective cleavage of a chemical bond. Prof. Kong's educational plans include development of a new course on chemical reaction dynamics emphasizing a `case studies` approach, and the teaching of an existing quantum chemistry course from a historical perspective. Selectivity in a multiple-path reaction is one of the most fascinating questions in chemical kinetics and reaction dynamics, and achieving selectivity has been a major driving force in many scientific endeavors. With selectivity, different reaction pathways can be isolated and investigated in detail. This ability will not only allow a deeper understanding of each reaction path, but also enable investigations of systems that would otherwise be too complicated to tackle.