论文标题
由扭曲极化的Terahertz脉冲诱导的手性分子的对映选择性取向
Enantioselective Orientation of Chiral Molecules Induced by Terahertz Pulses with Twisted Polarization
论文作者
论文摘要
手性和手性分子是现代化学和生化产业的关键要素。个人解决，手性对映异构体的最终分离已经过去了，仍然是分子物理和化学方面的重要难以捉摸的任务，多年来，已经引入了多种方法来实现这一目标。在这里，我们从理论上证明了一对交叉极偏的THZ脉冲通过其永久偶极矩与手性分子相互作用会诱导这些分子的对映选择性方向。这种取向持续很长时间，超过了THZ脉冲的持续时间，并研究了其对温度和脉冲参数的依赖性。持续的取向可以增强分子在不均匀的电磁场中的偏转，可能导致可行的分离技术。
Chirality and chiral molecules are key elements in modern chemical and biochemical industries. Individual addressing, and the eventual separation of chiral enantiomers has been and still is an important elusive task in molecular physics and chemistry, and a variety of methods has been introduced over the years to achieve this goal. Here, we theoretically demonstrate that a pair of cross-polarized THz pulses interacting with chiral molecules through their permanent dipole moments induces an enantioselective orientation of these molecules. This orientation persists for a long time, exceeding the duration of the THz pulses by several orders of magnitude, and its dependency on temperature and pulses' parameters is investigated. The persistent orientation may enhance the deflection of the molecules in inhomogeneous electromagnetic fields, potentially leading to viable separation techniques.
