论文标题
通过氢键观察Biradical自旋耦合
Observation of biradical spin coupling through hydrogen bonds
论文作者
论文摘要
在科学和技术中，对分子间电子自旋相互作用的研究至关重要。在此，使用超低温度扫描隧道显微镜创建了AU（111）上的全反式视黄酸分子的根本对。通过磁场依赖光谱鉴定两个自由基之间的抗磁磁耦合。测得的交换能从0.1到1.0 meV。 Biradical自旋耦合是通过O-H $ \ CDOTS $ O氢键介导的，这是从结合密度功能理论计算和价值键理论的现代版本的分析中阐明的。
Investigation of intermolecular electron spin interaction is of fundamental importance in both science and technology.Here, radical pairs of all-trans retinoic acid molecules on Au(111) are created using an ultra-low temperature scanning tunneling microscope. Antiferromagnetic coupling between two radicals is identified by magnetic-field dependent spectroscopy.The measured exchange energies are from 0.1 to 1.0 meV. The biradical spin coupling is mediated through O-H$\cdots$O hydrogen bonds, as elucidated from analysis combining density functional theory calculation and a modern version of valence bond theory.
