Barcellona Pablo, Safari Hassan, Salam A, Buhmann Stefan Yoshi
Physikalisches Institut, Albert-Ludwigs-Universität Freiburg, Hermann-Herder-Straße 3, 79104 Freiburg, Germany.
Physics and Photonics Department, Graduate University of Advanced Technology, P.O. Box 76315-117, Mahan, Kerman, Iran.
Phys Rev Lett. 2017 May 12;118(19):193401. doi: 10.1103/PhysRevLett.118.193401. Epub 2017 May 11.
We predict a discriminatory interaction between a chiral molecule and an achiral molecule which is mediated by a chiral body. To achieve this, we generalize the van der Waals interaction potential between two ground-state molecules with electric, magnetic, and chiral response to nontrivial environments. The force is evaluated using second-order perturbation theory with an effective Hamiltonian. Chiral media enhance or reduce the free interaction via many-body interactions, making it possible to measure the chiral contributions to the van der Waals force with current technology. The van der Waals interaction is discriminatory with respect to enantiomers of different handedness and could be used to separate enantiomers. We also suggest a specific geometric configuration where the electric contribution to the van der Waals interaction is zero, making the chiral component the dominant effect.
我们预测手性分子与非手性分子之间存在一种由手性物体介导的鉴别性相互作用。为实现这一点，我们将两个对非平凡环境具有电、磁和手性响应的基态分子之间的范德华相互作用势进行了推广。使用具有有效哈密顿量的二阶微扰理论来评估该力。手性介质通过多体相互作用增强或减弱自由相互作用，使得利用当前技术测量范德华力的手性贡献成为可能。范德华相互作用对于不同手性的对映体具有鉴别性，可用于分离对映体。我们还提出了一种特定的几何构型，其中范德华相互作用的电贡献为零，使得手性成分成为主导效应。
