Coupling of spin and charge currents to structural chirality in non-magnetic materials, known as chirality-induced spin selectivity, is promising for application in spintronic devices at room temperature. Although the chirality-induced spin selectivity effect has been identified in various chiral materials, its Onsager reciprocal process, the inverse chirality-induced spin selectivity effect, remains unexplored. Here we report the observation of the inverse chirality-induced spin selectivity effect in chiral assemblies of π-conjugated polymers. Using spin-pumping techniques, the inverse chirality-induced spin selectivity effect enables quantification of the magnitude of the longitudinal spin-to-charge conversion driven by chirality-induced spin selectivity in different chiral polymers. By widely tuning conductivities and supramolecular chiral structures via a printing method, we found a very long spin relaxation time of up to several nanoseconds parallel to the chiral axis. Our demonstration of the inverse chirality-induced spin selectivity effect suggests possibilities for elucidating the puzzling interplay between spin and chirality, and opens a route for spintronic applications using printable chiral assemblies.

自旋和电荷电流与非磁性材料中结构手性的耦合，称为手性诱导的自旋选择性，有望在室温下的自旋电子器件中得到应用。尽管手性诱导的自旋选择性效应已在各种手性材料中得到证实，但其 Onsager 倒易过程，即反手性诱导的自旋选择性效应，仍未得到探索。在这里，我们报告了π共轭聚合物手性组装体中反手性诱导的自旋选择性效应的观察。使用自旋泵技术，反手性诱导的自旋选择性效应能够量化不同手性聚合物中手性诱导的自旋选择性驱动的纵向自旋到电荷转换的幅度。通过印刷方法广泛调节电导率和超分子手性结构，我们发现平行于手性轴的自旋弛豫时间长达几纳秒。我们对反手性诱导的自旋选择性效应的演示表明了阐明自旋和手性之间令人费解的相互作用的可能性，并为使用可打印手性组件的自旋电子应用开辟了一条途径。