标题： 攀登旋转阶梯以获得手性 显示英文标题

标题： Climbing the rotational ladder to chirality

摘要： 分子手性通常被理解为分子平衡结构中空间反演对称性的破缺。 不太为人所知的是，通过极端的旋转激发，可以将无手性的分子变为有手性的。 在这里，我们理论上传播了一种生成旋转诱导手性（RIC）的明确策略：光学离心机旋转激发磷化氢分子（PH$_3$）进入对应于沿几乎与单个P-H键重合的轴顺时针（$R$-对映体）或逆时针（$L$-对映体）旋转的手性团簇态。 在离心脉冲期间施加强直流电场有利于产生一种旋转对映体形式，从而产生具有$permanently$方向旋转角动量的动态手性分子。 这朝着表征RIC迈出的关键一步，为手性作为自然基本特性提供了新的视角。 显示英文摘要

摘要： Molecular chirality is conventionally understood as space-inversion-symmetry breaking in the equilibrium structure of molecules. Less well known is that achiral molecules can be made chiral through extreme rotational excitation. Here, we theoretically demonstrate a clear strategy for generating rotationally-induced chirality (RIC): An optical centrifuge rotationally excites the phosphine molecule (PH$_3$) into chiral cluster states that correspond to clockwise ($R$-enantiomer) or anticlockwise ($L$-enantiomer) rotation about axes almost coinciding with single P-H bonds. Application of a strong dc electric field during the centrifuge pulse favors the production of one rotating enantiomeric form over the other, creating dynamically chiral molecules with $permanently$ oriented rotational angular momentum. This essential step toward characterizing RIC promises a fresh perspective on chirality as a fundamental aspect of nature.